Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises an array substrate and a light-emitting device layer which are arranged in a stacked mode, and the light-emitting device layer comprises a plurality of light-emitting devices; the light-emitting device comprises a first electrode, a first light-emitting layer, a charge generation layer, a second light-emitting layer and a second electrode which are stacked in the direction away from the array substrate. The first light-emitting layer comprises a first equal-thickness part, and the second light-emitting layer comprises a second equal-thickness part; the area of the orthographic projection of the first equal-thickness part on the array substrate is larger than that of the orthographic projection of the second equal-thickness part on the array substrate; the orthographic projection of the first equal-thickness part on the array substrate is at least partially overlapped with the orthographic projection of the second equal-thickness part on the array substrate; the overlapping area of the orthographic projection of the first equal-thickness part on the array substrate and the orthographic projection of the second equal-thickness part on the array substrate is an effective light-emitting area. In conclusion, according to the display panel in the embodiment, the risk of uneven and bad display caused by the fact that the position of the mask plate deviates can be reduced.

Description

Technical Field

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

[0002] With the development of the times, intelligent terminal devices have become an indispensable part of people's daily lives. However, due to the limitations of the structure of organic light-emitting display devices, their efficiency characteristics are limited and the current increases. As a result, the electrical and thermal stresses on the display device increase, leading to a reduction in the reliability of the display device. In related technologies, to solve the above problems, researchers have developed dual-emitting layer OLED (organic light-emitting diode) display devices, which can improve the lifespan, efficiency, and peak brightness of the display device.

[0003] In related technologies, when depositing two emitting layers in an OELD using a mask plate, the position of the mask plate will shift, resulting in a reduction in the overlapping area of the two emitting layers, and the manufactured OLED is prone to the problem of uneven display. Summary of the Invention

[0004] Based on this, in view of the problem that the currently manufactured OLED is prone to the problem of uneven display, it is necessary to provide a display panel and a display device.

[0005] A display panel includes:

[0006] An array substrate and a light-emitting device layer arranged in a stacked manner, where the light-emitting device layer includes a plurality of light-emitting devices;

[0007] The light-emitting device includes a first electrode, a first light-emitting layer, a charge generation layer, a second light-emitting layer, and a second electrode arranged in a stacked manner in a direction away from the array substrate;

[0008] The first light-emitting layer includes a first equal-thickness portion, and the second light-emitting layer includes a second equal-thickness portion; the area of the orthographic projection of the first equal-thickness portion on the array substrate is larger than the area of the orthographic projection of the second equal-thickness portion on the array substrate; the orthographic projection of the first equal-thickness portion on the array substrate at least partially overlaps with the orthographic projection of the second equal-thickness portion on the array substrate;

[0009] Wherein, the overlapping area of the orthographic projection of the first equal-thickness portion on the array substrate and the orthographic projection of the second equal-thickness portion on the array substrate is an effective light-emitting area; the ratio of the area of the effective light-emitting area to the area of the second equal-thickness portion on the array substrate is less than or equal to 1 and greater than or equal to 0.5.

[0010] In one embodiment, the ratio of the area of the effective light-emitting area to the area of the first equal-thickness portion on the array substrate is less than 1.

[0011] In one embodiment, the first light-emitting layer includes a first edge portion that surrounds the outer periphery of the first equal-thickness portion, and the thickness of the first edge portion decreases from one end close to the first equal-thickness portion to the other end away from the first equal-thickness portion;

[0012] The second light-emitting layer includes a second edge portion that surrounds the outer periphery of the second equal-thickness portion, and the thickness of the second edge portion decreases from one end close to the second equal-thickness portion to the other end away from the second equal-thickness portion;

[0013] The ratio of the area of the orthographic projection of the first light-emitting layer on the array substrate to the area of the orthographic projection of the second light-emitting layer on the array substrate is less than 1.

[0014] In one embodiment, the first equal-thickness portion includes a first side and a second side that are oppositely arranged along a first direction; the second equal-thickness portion includes a third side and a fourth side that are oppositely arranged along the first direction; the distance between the first side and the second side is greater than the distance between the third side and the fourth side; the first direction is perpendicular to the thickness direction of the array substrate.

[0015] In one embodiment, the orthographic projection of the third side and the fourth side on the array substrate is located between the orthographic projections of the first side and the second side on the array substrate.

[0016] In one embodiment, the distance between the orthographic projection of the third side on the array substrate and the orthographic projection of the fourth side on the array substrate is equal to the dimension of the effective light-emitting area in the first direction.

[0017] In one embodiment, the distance between the orthographic projection of the third side on the array substrate and the orthographic projection of the first side on the array substrate is a first value; the distance between the orthographic projection of the fourth side on the array substrate and the orthographic projection of the second side on the array substrate is a second value; the first value is equal to the second value and is between 0.5 um and 1.5 um.

[0018] In one embodiment, the orthographic projection of the third side on the array substrate is located between the orthographic projections of the first side and the second side on the array substrate, and the orthographic projection of the fourth side on the array substrate is located on the side of the orthographic projection of the second side on the array substrate away from the orthographic projection of the first side on the array substrate.

[0019] In one embodiment, the distance between the orthographic projection of the second side on the array substrate and the orthographic projection of the third side on the array substrate is equal to the dimension of the effective light-emitting region in the first direction.

[0020] In one embodiment, the orthographic projection of the fourth side on the array substrate is located between the orthographic projections of the first side and the second side on the array substrate, and the orthographic projection of the third side on the array substrate is located on the side of the orthographic projection of the first side on the array substrate away from the orthographic projection of the second side on the array substrate.

[0021] In one embodiment, the distance between the orthographic projection of the first side on the array substrate and the orthographic projection of the fourth side on the array substrate is equal to the dimension of the effective light-emitting region in the first direction.

[0022] In one embodiment, the first equal-thickness portion includes a fifth side and a sixth side that are oppositely arranged along a second direction; the second equal-thickness portion includes a seventh side and an eighth side that are oppositely arranged along the second direction; the thickness direction of the array substrate and the first direction both intersect the second direction;

[0023] The distance between the fifth side and the sixth side is greater than the distance between the seventh side and the eighth side.

[0024] In one embodiment, the orthographic projections of the seventh side and the eighth side on the array substrate are located between the orthographic projections of the fifth side and the sixth side on the array substrate.

[0025] In one embodiment, the distance between the orthographic projection of the seventh side on the array substrate and the orthographic projection of the eighth side on the array substrate is equal to the dimension of the effective light-emitting region in the second direction.

[0026] In one embodiment, the distance between the orthographic projection of the seventh side on the array substrate and the orthographic projection of the fifth side on the array substrate is a third value; the distance between the orthographic projection of the eighth side on the array substrate and the orthographic projection of the sixth side on the array substrate is a fourth value; the third value is equal to the fourth value and is between 0.5um and 1.5um.

[0027] In one embodiment, the orthographic projection of the seventh side on the array substrate is located between the orthographic projections of the fifth side and the sixth side on the array substrate, and the orthographic projection of the eighth side on the array substrate is located on the side of the orthographic projection of the sixth side on the array substrate away from the orthographic projection of the fifth side on the array substrate.

[0028] In one embodiment, the distance between the orthographic projection of the sixth side on the array substrate and the orthographic projection of the seventh side on the array substrate is equal to the size of the effective light-emitting region in the second direction.

[0029] In one embodiment, the orthographic projection of the eighth side on the array substrate is located between the orthographic projections of the fifth side and the sixth side on the array substrate, and the orthographic projection of the seventh side on the array substrate is located on the side of the orthographic projection of the fifth side on the array substrate that is away from the orthographic projection of the sixth side on the array substrate.

[0030] In one embodiment, the distance between the orthographic projection of the fifth side on the array substrate and the orthographic projection of the eighth side on the array substrate is equal to the size of the effective light-emitting region in the second direction.

[0031] In one embodiment, the thickness of the first equal-thickness portion is equal to the thickness of the second equal-thickness portion.

[0032] In one embodiment, the light-emitting device includes a first light-emitting device, a second light-emitting device, and a third light-emitting device;

[0033] The orthographic projection of the first light-emitting layer in the second light-emitting device and the third light-emitting device on the array substrate overlaps with the orthographic projection of the first light-emitting layer in the first light-emitting device on the array substrate;

[0034] The orthographic projection of the second light-emitting layer in the second light-emitting device and the third light-emitting device on the array substrate does not overlap with the orthographic projection of the second light-emitting layer in the first light-emitting device on the array substrate.

[0035] Compared with the traditional display panel, in which the sizes of the two light-emitting layers of the dual light-emitting layer OLED are exactly equal, when depositing the two light-emitting layers of the OELD by using a mask plate, if the position of the mask plate is shifted, the overlapping area of the two light-emitting layers will be reduced, resulting in a smaller area of the effective light-emitting region, and thus making the manufactured OLED prone to the problem of uneven display.

[0036] In the display panel of this embodiment, the first light-emitting layer includes a first equal-thickness portion, and the second light-emitting layer includes a second equal-thickness portion; the area of the orthographic projection of the first equal-thickness portion on the array substrate is larger than the area of the orthographic projection of the second equal-thickness portion on the array substrate; the sizes of the first light-emitting layer and the second light-emitting layer are not equal. The overlapping area of the orthographic projection of the first equal-thickness portion on the array substrate and the orthographic projection of the second equal-thickness portion on the array substrate, that is, the area of the effective light-emitting region, is larger than the overlapping area of the two light-emitting layers in the traditional display panel.

[0037] Since the area of the effective light-emitting region in the display panel in this embodiment is larger than the overlapping area of the two light-emitting layers in the conventional display panel; therefore, during the process of depositing the first light-emitting layer and the second light-emitting layer using a mask plate, when the mask plate has the same degree of displacement; the reduced area of the effective light-emitting region in the display panel in this embodiment is larger than the reduced overlapping area of the two light-emitting layers in the conventional display panel. The above-mentioned same degree of displacement means that the displacement direction and displacement distance of the deposited second light-emitting layer relative to the first light-emitting layer are both the same. Since the area of the effective light-emitting region in the display panel in this embodiment is larger than the overlapping area of the two light-emitting layers in the conventional display panel; therefore, when the mask plate is displaced, the display panel in this embodiment is less likely to have the problem of uneven display compared to the conventional display panel.

[0038] In summary, it can be seen that for the display panel in this embodiment, by setting the area of the positive projection of the first equal-thickness portion on the array substrate to be larger than the area of the positive projection of the second equal-thickness portion on the array substrate; the risk of uneven display caused by the displacement of the mask plate can be reduced, and the yield rate of the manufactured display panel can be improved.

[0039] This application also proposes a display device, including the aforementioned display panel.

[0040] In the display device of this embodiment, the first light-emitting layer includes a first equal-thickness portion, and the second light-emitting layer includes a second equal-thickness portion; the area of the positive projection of the first equal-thickness portion on the array substrate is larger than the area of the positive projection of the second equal-thickness portion on the array substrate; the sizes of the first light-emitting layer and the second light-emitting layer are not equal. The overlapping area of the positive projection of the first equal-thickness portion on the array substrate and the positive projection of the second equal-thickness portion on the array substrate, that is, the area of the effective light-emitting region is larger than the overlapping area of the two light-emitting layers in the conventional display panel.

[0041] Since the area of the effective light-emitting region in the display panel in this embodiment is larger than the overlapping area of the two light-emitting layers in the conventional display panel; therefore, during the process of depositing the first light-emitting layer and the second light-emitting layer using a mask plate, when the mask plate has the same degree of displacement; the reduced area of the effective light-emitting region in the display panel in this embodiment is larger than the reduced overlapping area of the two light-emitting layers in the conventional display panel. The above-mentioned same degree of displacement means that the displacement direction and displacement distance of the deposited second light-emitting layer relative to the first light-emitting layer are both the same. Since the area of the effective light-emitting region in the display panel in this embodiment is larger than the overlapping area of the two light-emitting layers in the conventional display panel; therefore, when the mask plate is displaced, the display panel in this embodiment is less likely to have the problem of uneven display compared to the conventional display panel.

[0042] As described above, in the display device of this embodiment, by setting the area of the orthographic projection of the first equal-thickness portion on the array substrate to be larger than the area of the orthographic projection of the second equal-thickness portion on the array substrate, the risk of uneven display caused by the offset of the mask plate position in the display panel can be reduced, and the yield of the manufactured display panel can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments or exemplary embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 It is a top view of the stacked structure of the first light-emitting layer and the second light-emitting layer in an embodiment of the present application.

[0045] Figure 2 It is Figure 1 the cross-sectional view taken along the line A-A in

[0046] Figure 3 It is a top view of the stacked structure of the first light-emitting layer and the second light-emitting layer in an embodiment of the present application.

[0047] Figure 4 It is Figure 3 the cross-sectional view taken along the line B-B in

[0048] Figure 5 It is a top view of the stacked structure of the first light-emitting layer and the second light-emitting layer in an embodiment of the present application.

[0049] Figure 6 It is Figure 5 the cross-sectional view taken along the line C-C in

[0050] Figure 7 It is Figure 1 the cross-sectional view taken along the line D-D in

[0051] Figure 8 It is Figure 3 the cross-sectional view taken along the line E-E in

[0052] Figure 9 It is Figure 5 the cross-sectional view taken along the line F-F in

[0053] Figure 10 It is a schematic structural diagram of a display panel in an embodiment of the present application.

[0054] Reference numerals:

[0055] Display panel 10;

[0056] Array substrate 100;

[0057] Light-emitting device layer 200, light-emitting device 210, first electrode 211, first light-emitting layer 212, first equal-thickness portion 212-1, effective light-emitting region A, first side L1, second side L2, fifth side L5, sixth side L6, first edge portion 212-2, charge generation layer 213, second light-emitting layer 214, second equal-thickness portion 214-1, third side L3, fourth side L4, seventh side L7, eighth side L8, second edge portion 214-2, second electrode 215, first common layer 216, second common layer 217;

[0058] Pixel definition layer 300, pixel opening 310. Detailed implementation manners

[0059] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0060] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0061] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In this application, unless otherwise clearly stipulated or defined, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] In this application, unless otherwise clearly stipulated or defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0064] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0065] Please refer to Figure 1 and Figure 2 , Figure 1The top view of the stacked structure of the first light-emitting layer and the second light-emitting layer in an embodiment of the present application is shown. A display panel 10 provided in an embodiment of the present application includes: an array substrate 100 and a light-emitting device layer 200 stacked, and the light-emitting device layer 200 includes a plurality of light-emitting devices 210; the light-emitting device 210 includes a first electrode 211, a first light-emitting layer 212, a charge generation layer 213, a second light-emitting layer 214, and a second electrode 215 stacked in a direction away from the array substrate 100; the first light-emitting layer 212 includes a first equal-thickness portion 212-1, and the second light-emitting layer 214 includes a second equal-thickness portion 214-1; the area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 is greater than the area of the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100; the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 and the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100 at least partially overlap; wherein, the overlapping area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 and the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100 is the effective light-emitting area A; the ratio of the area of the effective light-emitting area A to the area of the second equal-thickness portion 214-1 on the array substrate 100 is less than or equal to 1 and greater than or equal to 0.5.

[0066] Compared with the traditional display panel, in which the two light-emitting layers of the dual light-emitting layer OLED are exactly the same size, when using a mask plate to evaporate the two light-emitting layers in the OELD, if the position of the mask plate is offset, the overlapping area of the two light-emitting layers will decrease, resulting in a smaller area of the effective light-emitting area, and thus making it easy for the OLED to have the problem of uneven display.

[0067] In the display panel 10 of this embodiment, the first light-emitting layer 212 includes a first equal-thickness portion 212-1, and the second light-emitting layer 214 includes a second equal-thickness portion 214-1; the area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 is greater than the area of the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100; the sizes of the first light-emitting layer 212 and the second light-emitting layer 214 are not equal. The overlapping area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 and the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100, that is, the area of the effective light-emitting area A, is larger than the overlapping area of the two light-emitting layers in the traditional display panel.

[0068] Since the area of the effective light-emitting region A in the display panel 10 in this embodiment is larger than the overlapping area of the two light-emitting layers in the conventional display panel; during the process of depositing the first light-emitting layer 212 and the second light-emitting layer 214 using a mask, when the mask is offset by the same degree; the reduced area of the effective light-emitting region A in the display panel 10 in this embodiment is larger than the reduced overlapping area of the two light-emitting layers in the conventional display panel. The above-mentioned same degree of offset means that the offset direction and offset distance of the deposited second light-emitting layer 214 relative to the first light-emitting layer 212 are the same. Since the area of the effective light-emitting region A in the display panel 10 in this embodiment is larger than the overlapping area (i.e., the effective light-emitting region) of the two light-emitting layers in the conventional display panel; therefore, when the mask is offset, the display panel 10 in this embodiment is less likely to have the problem of uneven display compared to the conventional display panel.

[0069] In summary, for the display panel 10 in this embodiment, by setting the area of the positive projection of the first equal-thickness portion 212-1 on the array substrate 100 to be larger than the area of the positive projection of the second equal-thickness portion 214-1 on the array substrate 100; the risk of uneven display of the display panel 10 due to the offset of the mask position can be reduced, and the yield rate of the manufactured display panel 10 can be improved.

[0070] In one embodiment, the positive projection of the first equal-thickness portion 212-1 on the array substrate 100 overlaps with the positive projection of the second equal-thickness portion 214-1 on the array substrate 100; the ratio of the area of the effective light-emitting region A to the area of the second equal-thickness portion 214-1 on the array substrate 100 is equal to 1.

[0071] In this embodiment, by setting the ratio of the area of the effective light-emitting region A to the area of the second equal-thickness portion 214-1 on the array substrate 100 to be equal to 1, the side of the second equal-thickness portion 214-1 close to the first equal-thickness portion 212-1 can be completely in contact with the side of the first equal-thickness portion 212-1 close to the second equal-thickness portion 214-1, thereby maximizing the area of the effective light-emitting region A and improving the display effect of the display panel 10.

[0072] In one embodiment, the positive projection of the first equal-thickness portion 212-1 on the array substrate 100 partially overlaps with the positive projection of the second equal-thickness portion 214-1 on the array substrate 100; the ratio of the area of the effective light-emitting region A to the area of the second equal-thickness portion 214-1 on the array substrate 100 is less than 1 and greater than or equal to 0.5.

[0073] In this embodiment, when the position of the mask plate is shifted, the second equal-thickness portion 214-1 is shifted relative to the first equal-thickness portion 212-1; the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 overlaps with a part of the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100; on the side of the second equal-thickness portion 214-1 close to the first equal-thickness portion 212-1, part of the surface contacts the side of the first equal-thickness portion 212-1 close to the second equal-thickness portion 214-1.

[0074] By setting the ratio of the area of the effective light-emitting region A to the area of the second equal-thickness portion 214-1 on the array substrate 100 to be greater than or equal to 0.5, it is possible to avoid the area of the effective light-emitting region A being too small, and reduce the problem of uneven display of the display panel 10 caused by the too small area of the effective light-emitting region A.

[0075] In one of the embodiments, please refer to Figure 10 , the display panel 10 includes a pixel definition layer 300, and the light-emitting device 210 includes a first common layer 216 and a second common layer 217. The pixel definition layer 300 is located on the side of the first electrode 211 away from the array substrate 100 and on the side of the array substrate 100 close to the first electrode 211. At the position corresponding to the first electrode 211 on the pixel definition layer 300, a pixel opening 310 is provided; a part of the first common layer 216 is located within the pixel opening 310, and another part is located on the side of the pixel definition layer 300 away from the array substrate 100; the first light-emitting layer 212 is located on the side of the first common layer 216 away from the array substrate 100; the second common layer 217 is located between the second light-emitting layer 214 and the second electrode 215.

[0076] Please refer to Figure 2 , in some embodiments, the ratio of the area of the effective light-emitting region A to the area of the first equal-thickness portion 212-1 on the array substrate 100 is less than 1.

[0077] In this embodiment, by setting the ratio of the area of the effective light-emitting region A to the area of the first equal-thickness portion 212-1 on the array substrate 100 to be less than 1, only part of the surface on the side of the first equal-thickness portion 212-1 close to the second equal-thickness portion 214-1 contacts the side of the second equal-thickness portion 214-1 close to the first equal-thickness portion 212-1; thereby enabling the second equal-thickness portion 214-1 to have an offset margin, facilitating the maintenance of the area of the effective light-emitting region A to remain unchanged when the offset amount of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 is less than the offset margin.

[0078] Please refer to Figure 2, in some embodiments, the first light-emitting layer 212 includes a first edge portion 212-2. The first edge portion 212-2 is disposed around the outer periphery of the first equal-thickness portion 212-1, and the thickness of the first edge portion 212-2 decreases from one end close to the first equal-thickness portion 212-1 to the other end far from the first equal-thickness portion 212-1. The second light-emitting layer 214 includes a second edge portion 214-2. The second edge portion 214-2 is disposed around the outer periphery of the second equal-thickness portion 214-1, and the thickness of the second edge portion 214-2 decreases from one end close to the second equal-thickness portion 214-1 to the other end far from the second equal-thickness portion 214-1. The ratio of the area of the orthographic projection of the first light-emitting layer 212 on the array substrate 100 to the area of the orthographic projection of the second light-emitting layer 214 on the array substrate 100 is less than 1.

[0079] In this embodiment, the ratio of the area of the orthographic projection of the first light-emitting layer 212 on the array substrate 100 to the area of the orthographic projection of the second light-emitting layer 214 on the array substrate 100 is less than 1; thus, the area of the first light-emitting layer 212 is larger than the area of the second light-emitting layer 214; and the overlapping area of the orthographic projection of the second light-emitting layer 214 on the array substrate 100 and the orthographic projection of the first light-emitting layer 212 on the array substrate 100 is larger. During the process of depositing the first light-emitting layer 212 and the second light-emitting layer 214 using a mask plate, when the mask plate has the same degree of offset; in this embodiment, the overlapping area (i.e., the effective light-emitting area) of the orthographic projection of the second light-emitting layer 214 on the array substrate 100 and the orthographic projection of the first light-emitting layer 212 on the array substrate 100 is larger than the overlapping area of the orthographic projections of the two light-emitting layers on the corresponding substrate in a conventional display panel.

[0080] Please refer to Figure 2 , in some embodiments, the first equal-thickness portion 212-1 includes a first side L1 and a second side L2 that are oppositely disposed along a first direction; the second equal-thickness portion 214-1 includes a third side L3 and a fourth side L4 that are oppositely disposed along the first direction; the distance between the first side L1 and the second side L2 is greater than the distance D1 between the third side L3 and the fourth side L4; and the first direction is perpendicular to the thickness direction of the array substrate 100.

[0081] In this embodiment, since the distance between the first side L1 and the second side L2 is greater than the distance D1 between the third side L3 and the fourth side L4, the dimension of the first equal-thickness portion 212-1 in the first direction is greater than the dimension of the second equal-thickness portion 214-1 in the second direction. By setting the dimension of the first equal-thickness portion 212-1 in the first direction to be greater than the dimension of the second equal-thickness portion 214-1 in the second direction, it is convenient to make the second equal-thickness portion 214-1 have an offset margin in the first direction. Furthermore, when the offset amount of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the first direction is less than the offset margin, the area of the effective light-emitting region A is maintained unchanged.

[0082] In other embodiments, the distance between the first side L1 and the second side L2 is equal to the distance D1 between the third side L3 and the fourth side L4.

[0083] Please refer to Figure 2 , in some embodiments, the orthographic projection of the third side L3 and the fourth side L4 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100.

[0084] In this embodiment, by setting the orthographic projection of the third side L3 and the fourth side L4 on the array substrate 100 to be located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100, it is convenient to ensure that when the offset amount of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the first direction is less than a preset value, the orthographic projection of the third side L3 and the fourth side L4 on the array substrate 100 is always located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100. Furthermore, when the offset amount of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the first direction is less than a preset value, the area of the effective light-emitting region A is always maintained unchanged. Finally, the risk of the reduction of the effective light-emitting region A caused by the offset of the mask plate position in the first direction of the display panel 10 is reduced, and the yield rate of the manufactured display panel 10 is improved.

[0085] In some embodiments, the orthographic projection of the third side L3 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100; the orthographic projection of the fourth side L4 on the array substrate 100 is located between the orthographic projections of the third side L3 and the second side L2 on the array substrate 100.

[0086] Please refer to Figure 2 , in some embodiments, the distance D1 between the orthographic projection of the third side L3 on the array substrate 100 and the orthographic projection of the fourth side L4 on the array substrate 100 is equal to the dimension of the effective light-emitting region A in the first direction.

[0087] In this embodiment, the effective light-emitting region A is located between the third side L3 and the fourth side L4 of the second equal-thickness portion 214-1.

[0088] In some embodiments, both the first side L1 and the second side L2 extend along the second direction, both the third side L3 and the fourth side L4 extend along the second direction, and the second direction intersects with the first direction.

[0089] Please refer to Figure 2 , in some embodiments, the distance D2 between the orthographic projection of the third side L3 on the array substrate 100 and the orthographic projection of the first side L1 on the array substrate 100 is a first value; the distance D3 between the orthographic projection of the fourth side L4 on the array substrate 100 and the orthographic projection of the second side L2 on the array substrate 100 is a second value; the first value is equal to the second value and is between 0.5um and 1.5um.

[0090] In this embodiment, when the offset of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 along the first direction is less than the first value, even if the second equal-thickness portion 214-1 is offset relative to the first equal-thickness portion 212-1, the area of the effective light-emitting region A remains unchanged. Furthermore, the risk of the reduction of the effective light-emitting region A caused by the offset of the mask plate along the first direction in the display panel 10 is reduced, and the yield of the manufactured display panel 10 is improved.

[0091] Please refer to Figure 3 and Figure 4 , in some embodiments, the orthographic projection of the third side L3 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100, and the orthographic projection of the fourth side L4 on the array substrate 100 is located on the side of the orthographic projection of the second side L2 on the array substrate 100 away from the orthographic projection of the first side L1 on the array substrate 100.

[0092] In this embodiment, since the distance between the first side L1 and the second side L2 is greater than the distance D1 between the third side L3 and the fourth side L4; so when the second equal-thickness portion 214-1 is offset relative to the first equal-thickness portion 212-1 by the same degree along the first direction, the orthographic projection of the third side L3 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100, and the orthographic projection of the fourth side L4 on the array substrate 100 is located on the side of the orthographic projection of the second side L2 on the array substrate 100 away from the orthographic projection of the first side L1 on the array substrate 100; the area of the effective light-emitting region A in this embodiment is greater than the overlapping area (i.e., the effective light-emitting region) of the two light-emitting layers in the conventional display panel.

[0093] In some embodiments, the distance between the orthographic projection of the fourth side L4 on the array substrate 100 and the orthographic projection of the second side L2 on the array substrate 100 is greater than 0.

[0094] Please refer to Figure 4 , in some embodiments, the distance D4 between the orthographic projection of the second side L2 on the array substrate 100 and the orthographic projection of the third side L3 on the array substrate 100 is equal to the size of the effective light-emitting area A in the first direction.

[0095] In this embodiment, the effective light-emitting area A is located between the second side L2 of the first equal-thickness portion 212-1 and the third side L3 of the second equal-thickness portion 214-1.

[0096] In some embodiments, the distance D4 between the orthographic projection of the second side L2 on the array substrate 100 and the orthographic projection of the third side L3 on the array substrate 100 is less than the distance between the orthographic projection of the first side L1 on the array substrate 100 and the orthographic projection of the second side L2 on the array substrate 100.

[0097] Please refer to Figure 5 and Figure 6 , in some embodiments, the orthographic projection of the fourth side L4 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100, and the orthographic projection of the third side L3 on the array substrate 100 is located on the side away from the orthographic projection of the second side L2 on the array substrate 100 with respect to the orthographic projection of the first side L1 on the array substrate 100.

[0098] In this embodiment, since the distance between the first side L1 and the second side L2 is greater than the distance D1 between the third side L3 and the fourth side L4; when the second equal-thickness portion 214-1 is offset by the same degree relative to the first equal-thickness portion 212-1 in the first direction, and the orthographic projection of the fourth side L4 on the array substrate 100 is located between the orthographic projections of the first side L1 and the second side L2 on the array substrate 100, and the orthographic projection of the third side L3 on the array substrate 100 is located on the side away from the orthographic projection of the second side L2 on the array substrate 100 with respect to the orthographic projection of the first side L1 on the array substrate 100, the area of the effective light-emitting area A in this embodiment is greater than the overlapping area (i.e., the effective light-emitting area) of the two light-emitting layers in the conventional display panel.

[0099] In some embodiments, the distance between the orthographic projection of the third side L3 on the array substrate 100 and the orthographic projection of the first side L1 on the array substrate 100 is greater than 0.

[0100] Please refer to Figure 6, in some embodiments, the distance D5 between the orthographic projection of the first side L1 on the array substrate 100 and the orthographic projection of the fourth side L4 on the array substrate 100 is equal to the size of the effective light-emitting area A in the first direction.

[0101] In this embodiment, the effective light-emitting area A is located between the first side L1 of the first equal-thickness portion 212-1 and the fourth side L4 of the second equal-thickness portion 214-1.

[0102] In some embodiments, the distance D5 between the orthographic projection of the first side L1 on the array substrate 100 and the orthographic projection of the fourth side L4 on the array substrate 100 is less than the distance between the orthographic projection of the first side L1 on the array substrate 100 and the orthographic projection of the second side L2 on the array substrate 100.

[0103] Please refer to Figure 7 , in some embodiments, the first equal-thickness portion 212-1 includes a fifth side L5 and a sixth side L6 that are oppositely arranged along the second direction; the second equal-thickness portion 214-1 includes a seventh side L7 and an eighth side L8 that are oppositely arranged along the second direction; the thickness direction and the first direction of the array substrate 100 both intersect with the second direction; the distance between the fifth side L5 and the sixth side L6 is greater than the distance D6 between the seventh side L7 and the eighth side L8.

[0104] In this embodiment, since the distance between the fifth side L5 and the sixth side L6 is greater than the distance D6 between the seventh side L7 and the eighth side L8, the size of the first equal-thickness portion 212-1 in the second direction is greater than the size of the second equal-thickness portion 214-1 in the second direction. By setting the size of the first equal-thickness portion 212-1 in the second direction to be greater than the size of the second equal-thickness portion 214-1 in the second direction, it is convenient to make the second equal-thickness portion 214-1 have an offset margin in the second direction. Furthermore, when the offset amount of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the second direction is less than the offset margin, the area of the effective light-emitting area A is maintained unchanged.

[0105] In other embodiments, the distance between the fifth side L5 and the sixth side L6 is equal to the distance D6 between the seventh side L7 and the eighth side L8.

[0106] Please refer to Figure 7 , in some embodiments, the orthographic projections of the seventh side L7 and the eighth side L8 on the array substrate 100 are located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100.

[0107] In this embodiment, by setting the orthographic projections of the seventh side L7 and the eighth side L8 on the array substrate 100 to be located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100, when the offset of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the second direction is less than a preset value, the orthographic projections of the seventh side L7 and the eighth side L8 on the array substrate 100 are always located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100. Furthermore, when the offset of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 in the second direction is less than the preset value, the area of the effective light-emitting region A is ensured to remain unchanged all the time. Finally, the risk of the reduction of the effective light-emitting region A caused by the offset of the mask plate in the second direction is reduced, and the yield of the manufactured display panel 10 is improved.

[0108] In some embodiments, the orthographic projection of the seventh side L7 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100; the orthographic projection of the eighth side L8 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100.

[0109] Please refer to Figure 7 , in some embodiments, the distance D6 between the orthographic projection of the seventh side L7 on the array substrate 100 and the orthographic projection of the eighth side L8 on the array substrate 100; is equal to the dimension of the effective light-emitting region A in the second direction.

[0110] In this embodiment, the effective light-emitting region A is located between the seventh side L7 and the eighth side L8 of the second equal-thickness portion 214-1.

[0111] In some embodiments, both the fifth side L5 and the sixth side L6 extend in the first direction, and both the seventh side L7 and the eighth side L8 extend in the first direction.

[0112] Please refer to Figure 7 , in some embodiments, the distance D7 between the orthographic projection of the seventh side L7 on the array substrate 100 and the orthographic projection of the fifth side L5 on the array substrate 100 is a third value; the distance D8 between the orthographic projection of the eighth side L8 on the array substrate 100 and the orthographic projection of the sixth side L6 on the array substrate 100 is a fourth value; the third value is equal to the fourth value and is between 0.5um and 1.5um.

[0113] In this embodiment, when the offset of the second equal-thickness portion 214-1 relative to the first equal-thickness portion 212-1 along the second direction is less than a third value, even if the second equal-thickness portion 214-1 is offset relative to the first equal-thickness portion 212-1, the area of the effective light-emitting region A remains unchanged. Furthermore, the risk of the reduction of the effective light-emitting region A caused by the offset of the mask plate along the second direction in the display panel 10 is reduced, and the yield of the manufactured display panel 10 is improved.

[0114] Please refer to Figure 8 , in some embodiments, the orthographic projection of the seventh side L7 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100, and the orthographic projection of the eighth side L8 on the array substrate 100 is located on the side of the orthographic projection of the sixth side L6 on the array substrate 100 that is away from the orthographic projection of the fifth side L5 on the array substrate 100.

[0115] In this embodiment, since the distance between the fifth side L5 and the sixth side L6 is greater than the distance D6 between the seventh side L7 and the eighth side L8; so when the second equal-thickness portion 214-1 is offset relative to the first equal-thickness portion 212-1 along the second direction to the same extent, and the orthographic projection of the seventh side L7 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100, and the orthographic projection of the eighth side L8 on the array substrate 100 is located on the side of the orthographic projection of the sixth side L6 on the array substrate 100 that is away from the orthographic projection of the fifth side L5 on the array substrate 100; the area of the effective light-emitting region A in this embodiment is greater than the overlapping area (i.e., the effective light-emitting region) of the two light-emitting layers in the conventional display panel.

[0116] In some embodiments, the distance between the orthographic projection of the eighth side L8 on the array substrate 100 and the orthographic projection of the sixth side L6 on the array substrate 100 is greater than 0.

[0117] Please refer to Figure 8 , in some embodiments, the distance D9 between the orthographic projection of the sixth side L6 on the array substrate 100 and the orthographic projection of the seventh side L7 on the array substrate 100 is equal to the dimension of the effective light-emitting region A in the second direction.

[0118] In this embodiment, the effective light-emitting region A is located between the sixth side L6 of the first equal-thickness portion 212-1 and the seventh side L7 of the second equal-thickness portion 214-1.

[0119] In some embodiments, the distance D9 between the orthographic projection of the sixth side L6 on the array substrate 100 and the orthographic projection of the seventh side L7 on the array substrate 100; is less than the distance between the orthographic projection of the fifth side L5 on the array substrate 100 and the orthographic projection of the sixth side L6 on the array substrate 100.

[0120] Please refer to Figure 9 , in some embodiments, the orthographic projection of the eighth side L8 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100, and the orthographic projection of the seventh side L7 on the array substrate 100 is located on the side of the orthographic projection of the fifth side L5 on the array substrate 100 that is far from the orthographic projection of the sixth side L6 on the array substrate 100.

[0121] In this embodiment, since the distance between the fifth side L5 and the sixth side L6 is greater than the distance D6 between the seventh side L7 and the eighth side L8; so when the second equal-thickness portion 214-1 is offset relative to the first equal-thickness portion 212-1 to the same extent in the second direction, and the orthographic projection of the eighth side L8 on the array substrate 100 is located between the orthographic projections of the fifth side L5 and the sixth side L6 on the array substrate 100, and the orthographic projection of the seventh side L7 on the array substrate 100 is located on the side of the orthographic projection of the fifth side L5 on the array substrate 100 that is far from the orthographic projection of the sixth side L6 on the array substrate 100, the area of the effective light-emitting region A in this embodiment is greater than the area of the overlapping region (i.e., the effective light-emitting region) of the two light-emitting layers in the conventional display panel.

[0122] In some embodiments, the distance between the orthographic projection of the seventh side L7 on the array substrate 100 and the orthographic projection of the fifth side L5 on the array substrate 100 is greater than 0.

[0123] Please refer to Figure 9 , in some embodiments, the distance D10 between the orthographic projection of the fifth side L5 on the array substrate 100 and the orthographic projection of the eighth side L8 on the array substrate 100 is equal to the dimension of the effective light-emitting region A in the second direction.

[0124] In this embodiment, the effective light-emitting region A is located between the fifth side L5 of the first equal-thickness portion 212-1 and the eighth side L8 of the second equal-thickness portion 214-1.

[0125] In some embodiments, the distance D10 between the orthographic projection of the fifth side L5 on the array substrate 100 and the orthographic projection of the eighth side L8 on the array substrate 100; is less than the distance between the orthographic projection of the fifth side L5 on the array substrate 100 and the orthographic projection of the sixth side L6 on the array substrate 100.

[0126] Please refer to Figure 2 , in some embodiments, the thickness D12 of the first equal-thickness portion 212-1 is equal to the thickness D11 of the second equal-thickness portion 214-1.

[0127] In some embodiments, the light-emitting device 210 includes a first light-emitting device, a second light-emitting device, and a third light-emitting device; the orthographic projection of the first light-emitting layer 212 in the second light-emitting device and the third light-emitting device on the array substrate 100 overlaps with the orthographic projection of the first light-emitting layer 212 in the first light-emitting device on the array substrate 100; the orthographic projection of the second light-emitting layer 214 in the second light-emitting device and the third light-emitting device on the array substrate 100 does not overlap with the orthographic projection of the second light-emitting layer 214 in the first light-emitting device on the array substrate 100.

[0128] In this embodiment, by setting the orthographic projection of the second light-emitting layer 214 in the second light-emitting device and the third light-emitting device on the array substrate 100 not to overlap with the orthographic projection of the second light-emitting layer 214 in the first light-emitting device on the array substrate 100; it is convenient for the orthographic projection of the mask opening of the mask plate used for evaporating the second light-emitting layer 214 in the first light-emitting device on the array substrate 100; not to overlap with the orthographic projection of the mask opening of the mask plate used for evaporating the second light-emitting layer 214 in the second light-emitting device and the third light-emitting device on the array substrate 100.

[0129] The present application also proposes a display device (not marked in the figure), including the aforementioned display panel 10.

[0130] In the display device of this embodiment, the first light-emitting layer 212 includes a first equal-thickness portion 212-1, and the second light-emitting layer 214 includes a second equal-thickness portion 214-1; the area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 is larger than the area of the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100; the sizes of the first light-emitting layer 212 and the second light-emitting layer 214 are not equal. The overlapping area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 and the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100, that is, the area of the effective light-emitting region A is larger than the overlapping area of the two light-emitting layers in the conventional display panel.

[0131] Since in the display device of this embodiment, the area of the effective light-emitting region A in the display panel 10 is larger than the overlapping area of the two light-emitting layers in the conventional display panel; therefore, during the process of evaporating the first light-emitting layer 212 and the second light-emitting layer 214 using a mask plate, when the mask plate has the same degree of displacement; in the display device of this embodiment, the reduced area of the effective light-emitting region A in the display panel 10 is larger than the reduced overlapping area of the two light-emitting layers in the conventional display panel. The above-mentioned same degree of displacement means that the displacement direction and displacement distance of the evaporated second light-emitting layer 214 relative to the first light-emitting layer 212 are the same. Since in the display device of this embodiment, the area of the effective light-emitting region A in the display panel 10 is larger than the overlapping area (i.e., the effective light-emitting region) of the two light-emitting layers in the conventional display panel; therefore, when the mask plate is displaced, the display panel 10 of the display device in this embodiment is less likely to have the problem of uneven display than the conventional display panel.

[0132] In summary, it can be seen that in the display device of this embodiment, by setting the area of the orthographic projection of the first equal-thickness portion 212-1 on the array substrate 100 to be larger than the area of the orthographic projection of the second equal-thickness portion 214-1 on the array substrate 100; the risk of uneven display caused by the displacement of the mask plate in the display panel 10 can be reduced, and the yield rate of the manufactured display panel 10 can be improved.

[0133] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered to be within the scope described in this specification.

[0134] The above-described embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes an array substrate and a light-emitting device layer arranged in a stacked manner, and the light-emitting device layer includes a plurality of light-emitting devices; The light-emitting device includes a first electrode, a first light-emitting layer, a charge generation layer, a second light-emitting layer, and a second electrode which are arranged in a stacked manner along a direction away from the array substrate; The first light-emitting layer includes a first equal-thickness portion, and the second light-emitting layer includes a second equal-thickness portion; the area of the orthographic projection of the first equal-thickness portion on the array substrate is larger than the area of the orthographic projection of the second equal-thickness portion on the array substrate; The orthographic projection of the first equal-thickness portion on the array substrate and the orthographic projection of the second equal-thickness portion on the array substrate at least partially overlap; Wherein, the overlapping region of the orthographic projection of the first equal-thickness portion on the array substrate and the orthographic projection of the second equal-thickness portion on the array substrate is an effective light-emitting region; the ratio of the area of the effective light-emitting region to the area of the second equal-thickness portion on the array substrate is less than or equal to 1 and greater than or equal to 0.

5.

2. The display panel according to claim 1, wherein The ratio of the area of the effective light-emitting region to the area of the first equal-thickness portion on the array substrate is less than 1.

3. The display panel according to claim 1, characterized in that The first light-emitting layer includes a first edge portion, the first edge portion is disposed around the outer periphery of the first equal-thickness portion, and the thickness of the first edge portion decreases from one end close to the first equal-thickness portion to the other end away from the first equal-thickness portion; The second light-emitting layer includes a second edge portion, the second edge portion is disposed around the outer periphery of the second equal-thickness portion, and the thickness of the second edge portion decreases from one end close to the second equal-thickness portion to the other end away from the second equal-thickness portion; The ratio of the area of the orthographic projection of the first light-emitting layer on the array substrate to the area of the orthographic projection of the second light-emitting layer on the array substrate is less than 1.

4. The display panel according to claim 1, wherein The first equal-thickness portion includes a first side and a second side which are oppositely arranged in a first direction; the second equal-thickness portion includes a third side and a fourth side which are oppositely arranged in the first direction; the distance between the first side and the second side is greater than the distance between the third side and the fourth side; the first direction is perpendicular to the thickness direction of the array substrate.

5. The display panel according to claim 4, wherein The orthographic projections of the third side and the fourth side on the array substrate are located between the orthographic projections of the first side and the second side on the array substrate.

6. The display panel according to claim 5, characterized in that, The distance between the orthographic projection of the third side on the array substrate and the orthographic projection of the fourth side on the array substrate is equal to the dimension of the effective light-emitting region in the first direction.

7. The display panel according to claim 5, wherein, The distance between the orthographic projection of the third side on the array substrate and the orthographic projection of the first side on the array substrate is a first value; the distance between the orthographic projection of the fourth side on the array substrate and the orthographic projection of the second side on the array substrate is a second value; the first value is equal to the second value and is between 0.5um and 1.5um.

8. The display panel according to claim 4, wherein The orthogonal projection of the third side on the array substrate is located between the orthogonal projections of the first side and the second side on the array substrate, and the orthogonal projection of the fourth side on the array substrate is located on the side of the orthogonal projection of the second side on the array substrate that is away from the orthogonal projection of the first side on the array substrate.

9. The display panel according to claim 8, wherein The distance between the orthogonal projection of the second side on the array substrate and the orthogonal projection of the third side on the array substrate is equal to the dimension of the effective light-emitting region in the first direction.

10. The display panel according to claim 4, characterized in that, The orthogonal projection of the fourth side on the array substrate is located between the orthogonal projections of the first side and the second side on the array substrate, and the orthogonal projection of the third side on the array substrate is located on the side of the orthogonal projection of the first side on the array substrate that is away from the orthogonal projection of the second side on the array substrate.

11. The display panel according to claim 10, wherein, The distance between the orthogonal projection of the first side on the array substrate and the orthogonal projection of the fourth side on the array substrate is equal to the dimension of the effective light-emitting region in the first direction.

12. The display panel according to claim 4, wherein The first equal-thickness portion includes a fifth side and a sixth side that are oppositely arranged along the second direction; the second equal-thickness portion includes a seventh side and an eighth side that are oppositely arranged along the second direction; the thickness direction of the array substrate and the first direction both intersect with the second direction. The distance between the fifth side and the sixth side is greater than the distance between the seventh side and the eighth side.

13. The display panel according to claim 12, wherein, The orthogonal projections of the seventh side and the eighth side on the array substrate are located between the orthogonal projections of the fifth side and the sixth side on the array substrate.

14. The display panel according to claim 13, wherein The distance between the orthogonal projection of the seventh side on the array substrate and the orthogonal projection of the eighth side on the array substrate is equal to the dimension of the effective light-emitting region in the second direction.

15. The display panel according to claim 13, wherein The distance between the orthogonal projection of the seventh side on the array substrate and the orthogonal projection of the fifth side on the array substrate is a third value; the distance between the orthogonal projection of the eighth side on the array substrate and the orthogonal projection of the sixth side on the array substrate is a fourth value; the third value is equal to the fourth value and is between 0.5um and 1.5um.

16. The display panel according to claim 12, characterized in that, The orthogonal projection of the seventh side on the array substrate is located between the orthogonal projections of the fifth side and the sixth side on the array substrate, and the orthogonal projection of the eighth side on the array substrate is located on the side of the orthogonal projection of the sixth side on the array substrate that is away from the orthogonal projection of the fifth side on the array substrate.

17. The display panel according to claim 16, wherein The distance between the orthogonal projection of the sixth side on the array substrate and the orthogonal projection of the seventh side on the array substrate is equal to the dimension of the effective light-emitting region in the second direction.

18. The display panel according to claim 12, wherein The orthogonal projection of the eighth side on the array substrate is located between the orthogonal projections of the fifth side and the sixth side on the array substrate, and the orthogonal projection of the seventh side on the array substrate is located on the side of the orthogonal projection of the fifth side on the array substrate that is away from the orthogonal projection of the sixth side on the array substrate.

19. The display panel according to claim 18, wherein The distance between the orthographic projection of the fifth side on the array substrate and the orthographic projection of the eighth side on the array substrate is equal to the size of the effective light-emitting area in the second direction.

20. The display panel according to claim 1, wherein, The thickness of the first equal-thickness portion is equal to the thickness of the second equal-thickness portion.

21. The display panel according to claim 1, characterized in that, The light-emitting device includes a first light-emitting device, a second light-emitting device, and a third light-emitting device; The orthographic projection of the first light-emitting layer in the second light-emitting device and the third light-emitting device on the array substrate overlaps with the orthographic projection of the first light-emitting layer in the first light-emitting device on the array substrate; The orthographic projection of the second light-emitting layer in the second light-emitting device and the third light-emitting device on the array substrate does not overlap with the orthographic projection of the second light-emitting layer in the first light-emitting device on the array substrate.

22. A display device, characterized in that, Comprising: The display panel according to any one of claims 1-21.

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