Display panel, driving method thereof and display device

Abstract

The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device. The display panel comprises: a substrate; the light-emitting devices are located on one side of the substrate, and the light-emitting devices comprise the first light-emitting device and the second light-emitting device; the first light-emitting device comprises a first anode part and a first cathode part which are oppositely arranged, and a first light-emitting layer located between the first anode part and the first cathode part; the second light-emitting device comprises a second anode part and a second cathode part which are oppositely arranged, and at least two second light-emitting layers located between the second anode part and the second cathode part, a connecting layer is arranged between every two adjacent second light-emitting layers, and in the same second light-emitting device, the light-emitting colors of the second light-emitting layers are the same. According to the invention, high-efficiency, long-life and low-gray-scale display effects can be considered.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is a new generation of display technology that has been popular and has great development prospects in recent years. It has the advantages of self-luminescence, ultra-thinness, wide viewing angle, fast response speed, high luminous efficiency and brightness, wide operating temperature range, simple production process, low power consumption, and flexibility. Currently, it is widely used in multiple fields such as flat panel display, flexible display, vehicle-mounted display, and solid-state lighting.

[0003] A Tandem OLED device is a stacked OLED device formed by electrically connecting multiple organic light-emitting units in series inside the device. The Tandem OLED device has the characteristics of high efficiency and long lifespan.

[0004] However, due to the efficiency improvement of the Tandem OLED device, the current required at the same brightness is significantly reduced. Especially for low-brightness and low-gray-scale images, since the current becomes smaller, the differences brought about by the characteristic changes of thin-film transistors will be amplified, and the local uniformity and contrast uniformity during low-gray-scale display will deteriorate. Moreover, due to the serious lateral leakage current of the Tandem OLED device, the leakage current crosstalk at low gray scales is serious, which will affect the color gamut and overall display effect at low gray scales, resulting in poor low-gray-scale display effects. Summary of the Invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a display panel, a driving method thereof, and a display device, which can balance high efficiency, long lifespan, and low-gray-scale display effects.

[0006] The present disclosure provides a display panel, including: a substrate; a plurality of light-emitting devices located on one side of the substrate, the light-emitting devices including a first light-emitting device and a second light-emitting device; the first light-emitting device includes a first anode portion and a first cathode portion disposed opposite to each other, and a first light-emitting layer located between the first anode portion and the first cathode portion; the second light-emitting device includes a second anode portion and a second cathode portion disposed opposite to each other, and at least two second light-emitting layers located between the second anode portion and the second cathode portion, a connection layer is provided between adjacent two second light-emitting layers, and in the same second light-emitting device, the light-emitting colors of the second light-emitting layers are the same.

[0007] The present disclosure also provides a driving method for a display panel, where the display panel includes: a substrate; a plurality of light-emitting devices located on one side of the substrate, and the light-emitting devices include a first light-emitting device and a second light-emitting device; the first light-emitting device includes a first anode portion and a first cathode portion arranged opposite to each other, and a first light-emitting layer located between the first anode portion and the first cathode portion; the second light-emitting device includes a second anode portion and a second cathode portion arranged opposite to each other, and at least two second light-emitting layers located between the second anode portion and the second cathode portion, a connection layer is provided between adjacent two second light-emitting layers, and in the same second light-emitting device, the light-emitting colors of the second light-emitting layers are the same; the driving method includes: in the first mode, the brightness of the display panel is L1, the first light-emitting device emits light, and the second light-emitting device does not emit light; in the second mode, the brightness of the display panel is L2, the second light-emitting device emits light, or the first light-emitting device and the second light-emitting device emit light simultaneously; where L1 < L2.

[0008] The present disclosure also provides a display device including the above display panel.

[0009] The technical solution provided by the present disclosure has the following advantages compared with the prior art:

[0010] In the panel provided by the present disclosure, a first light-emitting device and a second light-emitting device are provided simultaneously. The first light-emitting device and the second light-emitting device are different types of light-emitting devices. Among them, the first light-emitting device is a single-layer light-emitting device, and the second light-emitting device is a stacked light-emitting device. Thus, the light-emitting states of the two light-emitting devices can be flexibly changed according to the application scenario or usage requirements. For example, in a scenario with high brightness requirements, the second light-emitting device can be mainly relied on to emit light. The stacked light-emitting device usually has higher light-emitting efficiency and longer service life. While in low-power consumption or low-gray-scale display, the first light-emitting device can be more utilized to emit light. The single-layer light-emitting device performs well in low-gray-scale display and can provide better contrast and color restoration. This design supports multiple display modes, and it can operate in a high-efficiency mode or in a mode that requires long life and better low-gray-scale display effects, thereby taking into account high efficiency, long life, and low-gray-scale display effects, so as to meet the needs of different users and applications.

[0011] Correspondingly, the driving method for the display panel provided by the present disclosure also has the above technical effects.

[0012] Correspondingly, the display device provided by the present disclosure also has the above technical effects. Description of the Drawings

[0013] The accompanying drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0014] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic plan view of a display panel provided by the present disclosure;

[0016] Figure 2 is Figure 1 a cross-sectional view of the display panel along A-A';

[0017] Figure 3 is a schematic plan view of another display panel provided by the present disclosure;

[0018] Figure 4 is Figure 1 another cross-sectional view of the display panel along A-A';

[0019] Figure 5 is a schematic plan view of yet another display panel provided by the present disclosure;

[0020] Figure 6 is a schematic plan view of yet another display panel provided by the present disclosure;

[0021] Figure 7 is a schematic plan view of yet another display panel provided by the present disclosure;

[0022] Figure 8 is a schematic plan view of yet another display panel provided by the present disclosure;

[0023] Figure 9 is a schematic plan view of yet another display panel provided by the present disclosure;

[0024] Figure 10 is a schematic plan view of yet another display panel provided by the present disclosure;

[0025] Figure 11 is a schematic plan view of yet another display panel provided by the present disclosure;

[0026] Figure 12 is a schematic plan view of yet another display panel provided by the present disclosure;

[0027] Figure 13 is Figure 12 a cross-sectional view of the display panel along B-B';

[0028] Figure 14 is Figure 12 another cross-sectional view of the display panel along B-B';

[0029] Figure 15 is a schematic plan view of another display panel provided by the present disclosure;

[0030] Figure 16 is a diagram showing the positional relationship between a second light-emitting device and a partition portion provided by the present disclosure;

[0031] Figure 17 is a schematic plan view of another display panel provided by the present disclosure;

[0032] Figure 18 is a top view structure diagram of a driving transistor in a first pixel circuit and a driving transistor in a second pixel circuit in the display panel provided by the present disclosure;

[0033] Figure 19 is a schematic plan view of a display device provided by the present disclosure. Detailed implementation manners

[0034] In order to more clearly understand the above objects, features, and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0036] Figure 1 is a schematic plan view of a display panel provided by the present disclosure, Figure 2 is Figure 1 a cross-sectional view of the said display panel along A - A', referring to Figure 1 and Figure 2 , embodiments of the present disclosure provide a display panel, including:

[0037] a substrate 10;

[0038] a plurality of light-emitting devices 20, the light-emitting devices 20 are located on one side of the substrate 10, and the light-emitting devices 20 include a first light-emitting device 21 and a second light-emitting device 22;

[0039] The first light-emitting device 21 includes a first anode portion 211 and a first cathode portion 212 which are oppositely arranged, and a first light-emitting layer 213 located between the first anode portion 211 and the first cathode portion 212;

[0040] The second light-emitting device 22 includes a second anode portion 221 and a second cathode portion 222 which are oppositely arranged, and at least two layers of second light-emitting layers 223 located between the second anode portion 221 and the second cathode portion 222. A connection layer 224 is arranged between adjacent two layers of second light-emitting layers 223. In the same second light-emitting device 22, the light-emitting colors of the respective second light-emitting layers 223 are the same.

[0041] Specifically, the display panel provided by the embodiments of the present disclosure includes a substrate 10. The substrate 10 may be a rigid substrate, and the material of the substrate 10 is glass. The substrate 10 may also be a flexible substrate, and the material of the substrate 10 is polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), or the like. The substrate 10 is used to support and protect the film layers formed thereon.

[0042] Optionally, the display panel further includes an array layer 30 disposed on the substrate 10. The array layer 30 includes pixel circuits for driving the light-emitting devices 20 to emit light. One pixel circuit corresponds to at least one light-emitting device 20. The light-emitting device 20 is electrically connected to the corresponding pixel circuit, that is, the light-emitting devices 20 electrically connected to the same pixel circuit form a sub-pixel. Or rather, the pixel circuit and the light-emitting device 20 electrically connected to the pixel circuit together form a sub-pixel. Multiple sub-pixels jointly perform the display of the picture. It should be noted that those skilled in the art can set the specific circuit structure of the pixel circuit according to the actual situation. For example, it can be a 2T1C (two transistors and one capacitor), 7T1C, 8T1C, etc. circuit in the related art. The present disclosure does not make specific limitations thereto.

[0043] It should be noted that Figure 1 it is exemplarily shown in the figure that the vertical projection pattern of the light-emitting device 20 on the plane where the substrate 10 is located is a rectangle. In other embodiments of the present disclosure, the vertical projection pattern of the light-emitting device 20 on the plane where the substrate 10 is located may also be other shapes, and the present disclosure will not elaborate thereon herein.

[0044] The display panel further includes a pixel definition layer 40 disposed on the side of the array layer 30 away from the substrate 10. The material of the pixel definition layer 40 includes an insulating material. The pixel definition layer 40 includes a plurality of openings. The pixel definition layer 40 defines a light-emitting area through the openings, and the light-emitting area is used to dispose the light-emitting devices 20.

[0045] The light-emitting device 20 includes a first light-emitting device 21 and a second light-emitting device 22. Among them, the first light-emitting device 21 includes a first anode portion 211 and a first cathode portion 212 which are oppositely arranged, and one layer of first light-emitting layer 213 located between the first anode portion 211 and the first cathode portion 212, that is, the first light-emitting device 21 is a single-layer light-emitting device.

[0046] The second light-emitting device 22 includes a second anode portion 221 and a second cathode portion 222 that are oppositely arranged, and at least two layers of second light-emitting layers 223 located between the second anode portion 221 and the second cathode portion 222. A connection layer 224 is provided between adjacent two layers of second light-emitting layers 223. In the same second light-emitting device 22, the light-emitting colors of the respective second light-emitting layers 223 are the same, that is, the second light-emitting device 22 is a stacked light-emitting device. That is, the second light-emitting device 22 includes at least two serially connected light-emitting units, and adjacent light-emitting units are connected by the connection layer 224. The stacked light-emitting device has a higher device efficiency and a longer lifespan.

[0047] It should be noted that Figure 2 exemplarily shows that the second light-emitting device 22 in the display panel includes two layers of second light-emitting layers 223. In other embodiments of the present disclosure, the second light-emitting device 22 may further include more than two layers of second light-emitting layers 223, and the present disclosure will not elaborate herein.

[0048] It can be understood that the light-emitting device 20 may further include a hole injection layer (Hole Injection Layer, HIL), a hole transport layer (Hole Transport Layer, HTL), a hole blocking layer (Hole Block Layer, HBL), an electron blocking layer (Electron Block Layer, EBL), an electron transport layer (Electron Transport Layer, ETL), and / or an electron injection layer (Electron Injection Layer, EIL), etc., and the present disclosure will not elaborate herein.

[0049] In the low gray-scale display mode, the driving current for driving the second light-emitting device 22 to emit light becomes smaller. Since the driving current becomes smaller, the differences caused by the characteristic changes of the thin-film transistors in the pixel circuit electrically connected thereto will be amplified, so that the local uniformity and contrast uniformity during the display of the display panel will deteriorate. Moreover, due to the relatively serious lateral leakage current of the second light-emitting device 22, in the low gray-scale display mode, the serious leakage current crosstalk will affect the color gamut and the overall display effect, resulting in a poor low gray-scale display effect.

[0050] In the display panel provided by the embodiments of the present disclosure, a first light-emitting device 21 and a second light-emitting device 22 are simultaneously provided. The first light-emitting device 21 and the second light-emitting device 22 are different types of light-emitting devices 20. Among them, the first light-emitting device 21 is a single-layer light-emitting device, and the second light-emitting device 22 is a stacked light-emitting device. Thus, the light-emitting states of the two light-emitting devices 20 can be flexibly changed according to the application scenario or usage requirements. For example, in a scenario with high brightness requirements, the second light-emitting device 22 can be mainly relied on for light emission. The stacked light-emitting device generally has higher light-emitting efficiency and longer service life. While in low-power consumption or low-gray-scale display, the first light-emitting device 21 can be utilized more for light emission. The single-layer light-emitting device performs well in low-gray-scale display and can provide better contrast and color restoration. This design supports multiple display modes, and it can operate in a high-efficiency mode or in a mode that requires long life and better low-gray-scale display effects, thereby taking into account high efficiency, long life, and low-gray-scale display effects, and meeting the needs of different users and applications.

[0051] Optionally, the display panel includes a first mode and a second mode. In the first mode, the brightness of the display panel is L1, the first light-emitting device 21 emits light, and the second light-emitting device 22 does not emit light; in the second mode, the brightness of the display panel is L2, the second light-emitting device 22 emits light, or the first light-emitting device 21 and the second light-emitting device 22 emit light simultaneously, where L1 < L2. That is, the first mode is a low-gray-scale display mode, and the second mode is a non-low-gray-scale display mode. When displaying the same brightness, the driving current for driving the first light-emitting device 21 to emit light is larger than the driving current for driving the second light-emitting device 22 to emit light. In the low-gray-scale display mode, the difference caused by the change in the characteristics of the thin-film transistor in the pixel circuit electrically connected to the first light-emitting device 21 due to the decrease in the driving current for driving the first light-emitting device 21 to emit light is relatively small. In the low-gray-scale display mode, the first light-emitting device 21 emits light, and the second light-emitting device 22 does not emit light, so that the local uniformity and contrast uniformity of the display panel during display will be improved. Moreover, since the lateral leakage current phenomenon of the first light-emitting device 21 is lighter than that of the second light-emitting device 22, in the low-gray-scale display mode, when the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, the influence of the leakage current crosstalk on the color gamut and the overall display effect can be effectively reduced, thereby improving the low-gray-scale display effect. At the same time, in the non-low-gray-scale display mode, the second light-emitting device 22 emits light, and the second light-emitting device 22 has higher device efficiency and longer life, thereby improving the light-emitting efficiency and service life of the display panel. That is, the display panel provided by the embodiments of the present disclosure can take into account high efficiency, long life, and low-gray-scale display effects.

[0052] Continue to refer to Figure 1 and Figure 2, in some alternative embodiments, the display panel includes a plurality of light-emitting device groups 201. Each light-emitting device group 201 includes a first light-emitting device 21 and at least one second light-emitting device 22 that are adjacent to each other. In the same light-emitting device group 201, the light-emitting color of the first light-emitting device 21 is the same as that of the second light-emitting device 22.

[0053] Specifically, the display panel includes a plurality of light-emitting device groups 201. Each light-emitting device group 201 includes a first light-emitting device 21 and at least one second light-emitting device 22 that have the same light-emitting color. Thus, both the first light-emitting device 21 and the second light-emitting device 22 can be evenly arranged in the display panel. Therefore, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, and in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, the color consistency and uniformity in different areas of the display panel during display are ensured.

[0054] Optionally, the light-emitting device group 201 includes a first light-emitting device 21 and a second light-emitting device 22 that are adjacent to each other. Thus, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, and in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, the display panel has the same resolution during display.

[0055] Of course, in other embodiments of the present disclosure, each light-emitting device group 201 may also include a first light-emitting device 21 and two or more second light-emitting devices 22 that have the same light-emitting color. Each light-emitting device group 201 may also include a second light-emitting device 22 and two or more first light-emitting devices 21. Specifically, it can be set according to the resolution requirements, and the present disclosure will not elaborate herein.

[0056] Continue to refer to Figure 1 , in some alternative embodiments, in the same light-emitting device group 201, the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is equal to the area of the vertical projection pattern of the second light-emitting device 22 on the substrate 10.

[0057] Specifically, in the same light-emitting device group 201, the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is the same as the area of the vertical projection pattern of the second light-emitting device 22 on the substrate 10. In the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 emits light, the light intensity distribution of the display panel during light emission is more uniform, which helps to reduce the phenomenon of uneven brightness and improve the overall brightness uniformity of the display panel.

[0058] Meanwhile, the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is the same as that of the vertical projection pattern of the second light-emitting device 22 on the substrate 10, which means that consistent standards and processes can be adopted in the manufacturing processes of the first light-emitting device 21 and the second light-emitting device 22, simplifying the production and quality control processes, facilitating the improvement of production efficiency, and reducing the manufacturing cost.

[0059] It should be noted that the area of the vertical projection pattern of the light-emitting device 20 on the substrate 10 refers to the area of the vertical projection pattern of the effective light-emitting region of the light-emitting device 20 on the substrate 10.

[0060] Figure 3 It is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 3 , in the same light-emitting device group 201, the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is smaller than that of the vertical projection pattern of the second light-emitting device 22 on the substrate 10.

[0061] Specifically, when the first light-emitting devices 21 of different sizes display the same brightness, the smaller the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10, the larger the driving current for driving the first light-emitting device 21 to emit light. The area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is smaller than that of the vertical projection pattern of the second light-emitting device 22 on the substrate 10, that is, the area of the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is relatively small. In the low gray-scale display mode, the difference caused by the characteristic change of the thin-film transistor in the pixel circuit electrically connected to the first light-emitting device 21 due to the decrease in the driving current for driving the first light-emitting device 21 to emit light is relatively small. Therefore, in the low gray-scale display mode, when the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, the local uniformity and contrast uniformity of the display panel during display will be improved.

[0062] Continue to refer to Figure 1 and Figure 2 , in some alternative embodiments, in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 and one second light-emitting layer 223 in the second light-emitting device 22 are arranged on the same layer.

[0063] Specifically, in the same light-emitting device group 201, the light-emitting color of the first light-emitting device 21 is the same as that of the second light-emitting device 22. Therefore, in the same light-emitting device group 201, the materials of the first light-emitting layer 213 in the first light-emitting device 21 and one of the second light-emitting layers 223 in the second light-emitting device 22 can be the same. In the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 and one of the second light-emitting layers 223 in the second light-emitting device 22 can be made of the same material in the same process, which is beneficial to reducing the process and production costs.

[0064] It should be noted that in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 can be arranged on the same layer as any one of the second light-emitting layers 223 in the second light-emitting device 22. The present disclosure does not make specific limitations on this, and it can be set according to actual production requirements.

[0065] Figure 4 Yes Figure 1 Another cross-sectional view of the display panel along A-A', refer to Figure 1 And Figure 4 In some alternative embodiments, in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 is connected to one of the second light-emitting layers 223 in the second light-emitting device 22.

[0066] Specifically, in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 and one of the second light-emitting layers 223 in the second light-emitting device 22 can be made of the same material in the same process. Further, in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 is connected to one of the second light-emitting layers 223 in the second light-emitting device 22, that is, in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 and one of the second light-emitting layers 223 in the second light-emitting device 22 can be obtained by evaporation through the same mask opening, which effectively reduces the manufacturing difficulty of the mask plate and the production cost. And the first light-emitting layer 213 in the first light-emitting device 21 and one of the second light-emitting layers 223 in the second light-emitting device 22 can be obtained by evaporation through the same mask opening, which is beneficial to setting the sizes of the first light-emitting layer 213 in the first light-emitting device 21 and the second light-emitting layer 223 in the second light-emitting device 22 to be larger, thereby being beneficial to improving the aperture ratio of the display panel.

[0067] It should be noted that in the same light-emitting device group 201, the first light-emitting layer 213 in the first light-emitting device 21 is connected to one of the second light-emitting layers 223 in the second light-emitting device 22. However, in the same light-emitting device group 201, the first anode portion 211 in the first light-emitting device 21 and the second anode portion 221 in the second light-emitting device 22 are insulated from each other.

[0068] Continue to refer to Figure 1 In some alternative embodiments, the display panel includes a plurality of light-emitting device units 202. Each light-emitting device unit 202 includes at least two light-emitting device groups 201 arranged along the first direction X. In the same light-emitting device unit 202, the light-emitting devices 20 in different light-emitting device groups 201 have different light-emitting colors.

[0069] Specifically, the display panel includes a plurality of light-emitting device units 202. Each light-emitting device unit 202 includes at least two light-emitting device groups 201 arranged along the first direction X. In the same light-emitting device unit 202, the light-emitting devices 20 in different light-emitting device groups 201 have different light-emitting colors. Thus, in various display modes, that is, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, and in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 emits light, the display panel can display images of various colors.

[0070] Exemplarily, refer to Figure 1 The light-emitting device unit 202 includes a first light-emitting device group 2011, a second light-emitting device group 2012, and a third light-emitting device group 2013 arranged along the first direction X. The light-emitting devices 20 in the first light-emitting device group 2011, the light-emitting devices 20 in the second light-emitting device group 2012, and the light-emitting devices 20 in the third light-emitting device group 2013 have different light-emitting colors. It should be noted that in other embodiments of the present disclosure, the light-emitting device unit 202 may further include other numbers of light-emitting device groups 201 arranged along the first direction X, which are not elaborated herein one by one.

[0071] Continue to refer to Figure 1 In some alternative embodiments, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the second direction Y, where the first direction X intersects with the second direction Y;

[0072] In each light-emitting device group 201, the second light-emitting devices 22 are located on the same side of the first light-emitting devices 21.

[0073] Specifically, in the display panel, when the light-emitting device groups 201 in the light-emitting device unit 202 are arranged along the first direction X, the light-emitting devices 20 in the light-emitting device group 201 can be arranged along the second direction Y, where the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular to each other. And in each light-emitting device group 201, the second light-emitting device 22 is located on the same side of the first light-emitting device 21, so that both the first light-emitting device 21 and the second light-emitting device 22 can be evenly arranged in the display panel. Thus, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, and in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, the color consistency and uniformity in different regions of the display panel during display are ensured. At the same time, along the second direction Y, a first light-emitting device 21 is arranged between two adjacent second light-emitting devices 22, and no connection layer is provided in the first light-emitting device 21. Thus, the arrangement of the first light-emitting device 21 is beneficial to reducing the transmission of lateral leakage current between two adjacent second light-emitting devices 22 arranged along the second direction Y, improving the problem of sub-pixel crosstalk, and enhancing the display effect.

[0074] Figure 5 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 5 , in some alternative embodiments, the light-emitting devices 20 in the light-emitting device group 201 are arranged along the second direction Y, where the first direction X and the second direction Y intersect;

[0075] In two adjacent light-emitting device groups 201 along the second direction Y, the second light-emitting device 22 is located on different sides of the first light-emitting device 21.

[0076] Specifically, in the display panel, when the light-emitting device groups 201 in the light-emitting device unit 202 are arranged along the first direction X, the light-emitting devices 20 in the light-emitting device group 201 can be arranged along the second direction Y, where the first direction X and the second direction Y intersect. And in two adjacent light-emitting device groups 201 along the second direction Y, the second light-emitting device 22 is located on different sides of the first light-emitting device 21, that is, there are some second light-emitting devices 22 in two adjacent light-emitting device groups 201 along the second direction Y that are adjacent to each other, and there are some first light-emitting devices 21 in two adjacent light-emitting device groups 201 along the second direction Y that are adjacent to each other, that is, a larger number of first light-emitting devices 21 are arranged together, and a larger number of second light-emitting devices 22 are arranged together, which is beneficial to reducing the process complexity and improving the production efficiency.

[0077] Figure 6 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 6 , in some alternative embodiments, the light-emitting devices 20 in the light-emitting device group 201 are arranged along the first direction X;

[0078] In each light-emitting device group 201, the second light-emitting device 22 is located on the same side of the first light-emitting device 21.

[0079] Specifically, in the display panel, when the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, and in each light-emitting device group 201, the second light-emitting device 22 is located on the same side of the first light-emitting device 21, so that both the first light-emitting device 21 and the second light-emitting device 22 can be evenly arranged in the display panel. Thus, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, and in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, the color consistency and uniformity in different regions of the display panel during display are ensured. At the same time, along the first direction X, a first light-emitting device 21 is arranged between two adjacent second light-emitting devices 22, and no connection layer is provided in the first light-emitting device 21. Thus, the arrangement of the first light-emitting device 21 is beneficial to reducing the transmission of lateral leakage current between two adjacent second light-emitting devices 22 arranged along the first direction X, improving the problem of sub-pixel crosstalk, and enhancing the display effect.

[0080] Figure 7 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 7 , in some alternative embodiments, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X;

[0081] In two adjacent light-emitting device groups 201 along the first direction X, the second light-emitting devices 22 are located on different sides of the first light-emitting device 21.

[0082] Specifically, in the display panel, when the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, and in two adjacent light-emitting device groups 201 along the first direction X, the second light-emitting devices 22 are located on different sides of the first light-emitting device 21, that is, there are some second light-emitting devices 22 in two adjacent light-emitting device groups 201 along the first direction X that are adjacent to each other, and there are some first light-emitting devices 21 in two adjacent light-emitting device groups 201 along the first direction X that are adjacent to each other, that is, a larger number of first light-emitting devices 21 are arranged together, and a larger number of second light-emitting devices 22 are arranged together, which is beneficial to reducing the process complexity and improving the production efficiency.

[0083] Figure 8 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 8, in some alternative embodiments, the light-emitting device group 201 includes a first light-emitting device group 2011, a second light-emitting device group 2012, and a third light-emitting device group 2013. The light-emitting colors of the light-emitting devices 20 in the first light-emitting device group 2011, the light-emitting colors of the light-emitting devices 20 in the second light-emitting device group 2012, and the light-emitting colors of the light-emitting devices 20 in the third light-emitting device group 2013 are all different;

[0084] The display panel includes a first light-emitting device group column 203 and a second light-emitting device group column 204 that are alternately and repeatedly arranged along the first direction X;

[0085] The first light-emitting device group column 203 includes the first light-emitting device group 2011 and the second light-emitting device group 2012 that are alternately and repeatedly arranged along the second direction Y. The second light-emitting device group column 204 includes a plurality of third light-emitting device groups 2013 arranged along the second direction Y. Among them, the first direction X and the second direction Y intersect;

[0086] Each of the light-emitting devices 20 in the first light-emitting device group 2011 and the second light-emitting device group 2012 is arranged along the first direction X, and each of the light-emitting devices 20 in the third light-emitting device group 2013 is arranged along the second direction Y.

[0087] Specifically, the display panel includes a first light-emitting device group column 203 and a second light-emitting device group column 204 that are alternately and repeatedly arranged along the first direction X. The first light-emitting device group column 203 includes the first light-emitting device group 2011 and the second light-emitting device group 2012 that are alternately and repeatedly arranged along the second direction Y. The second light-emitting device group column 204 includes a plurality of third light-emitting device groups 2013 arranged along the second direction Y. The light-emitting colors of the light-emitting devices 20 in the first light-emitting device group 2011, the light-emitting colors of the light-emitting devices 20 in the second light-emitting device group 2012, and the light-emitting colors of the light-emitting devices 20 in the third light-emitting device group 2013 are all different. Each of the light-emitting devices 20 in the first light-emitting device group 2011 and the second light-emitting device group 2012 is arranged along the first direction X, and each of the light-emitting devices 20 in the third light-emitting device group 2013 is arranged along the second direction Y. The first light-emitting devices 21 with different light-emitting colors and the second light-emitting devices 22 with different light-emitting colors are both evenly arranged in the display panel. Thus, in various display modes, that is, in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 does not emit light, in the display mode where the first light-emitting device 21 does not emit light and the second light-emitting device 22 emits light, and in the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 emits light, the display panel can display pictures of various colors.

[0088] When the number of the third light-emitting device group 2013 in the second light-emitting device group column 204 is less than the sum of the numbers of the first light-emitting device group 2011 and the second light-emitting device group 2012 in the first light-emitting device group column 203, each light-emitting device 20 in the third light-emitting device group 2013 can be arranged along the second direction Y, which is beneficial to improving the space utilization rate of the display panel.

[0089] Figure 9 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 9 , in some alternative embodiments, the light-emitting device group 201 includes a first light-emitting device group 2011, a second light-emitting device group 2012, and a third light-emitting device group 2013. The light-emitting colors of the light-emitting devices 20 in the first light-emitting device group 2011, the light-emitting colors of the light-emitting devices 20 in the second light-emitting device group 2012, and the light-emitting colors of the light-emitting devices 20 in the third light-emitting device group 2013 are all different;

[0090] The display panel includes a first light-emitting device group column 203 and a second light-emitting device group column 204 that are alternately and repeatedly arranged along the first direction X;

[0091] The first light-emitting device group column 203 includes a first light-emitting device group 2011 and a second light-emitting device group 2012 that are alternately and repeatedly arranged along the second direction Y. The second light-emitting device group column 204 includes a plurality of third light-emitting device groups 2013 that are arranged along the second direction Y, where the first direction X and the second direction Y intersect;

[0092] Each light-emitting device 20 in the first light-emitting device group 2011 and the second light-emitting device group 2012 is arranged along the first direction X, and each light-emitting device 20 in the third light-emitting device group 2013 is arranged along the first direction X.

[0093] Specifically, the display panel includes a first light-emitting device group column 203 and a second light-emitting device group column 204 that are alternately and repeatedly arranged along a first direction X. The first light-emitting device group column 203 includes a first light-emitting device group 2011 and a second light-emitting device group 2012 that are alternately and repeatedly arranged along a second direction Y. The second light-emitting device group column 204 includes a plurality of third light-emitting device groups 2013 arranged along the second direction Y. The light-emitting colors of the light-emitting devices 20 in the first light-emitting device group 2011, the light-emitting colors of the light-emitting devices 20 in the second light-emitting device group 2012, and the light-emitting colors of the light-emitting devices 20 in the third light-emitting device group 2013 are all different. Each of the light-emitting devices 20 in the first light-emitting device group 2011 and the second light-emitting device group 2012 is arranged along the first direction X. Each of the light-emitting devices 20 in the third light-emitting device group 2013 is arranged along the first direction X. The first light-emitting devices 21 with different light-emitting colors and the second light-emitting devices 22 with different light-emitting colors are both evenly arranged in the display panel. Thus, in various display modes, that is, in the display mode where the first light-emitting devices 21 emit light and the second light-emitting devices 22 do not emit light, in the display mode where the first light-emitting devices 21 do not emit light and the second light-emitting devices 22 emit light, and in the display mode where the first light-emitting devices 21 emit light and the second light-emitting devices 22 emit light, the display panel can display pictures of various colors.

[0094] Moreover, when the number of the third light-emitting device groups 2013 in the second light-emitting device group column 204 is the same as the sum of the number of the first light-emitting device group 2011 and the second light-emitting device group 2012 in the first light-emitting device group column 203, each of the light-emitting devices 20 in the third light-emitting device group 2013 can be arranged along the first direction X, which is beneficial to improving the space utilization rate of the display panel.

[0095] Continue to refer to Figure 9 , in some alternative embodiments, each of the light-emitting devices 20 in the light-emitting device group 201 is arranged along the first direction X;

[0096] In each of the light-emitting device groups 201, the second light-emitting devices 22 are located on the same side of the first light-emitting devices 21.

[0097] Specifically, in the first light-emitting device group column 203 and the second light-emitting device group column 204, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, and in each light-emitting device group 201, the second light-emitting devices 22 are located on the same side of the first light-emitting devices 21. Thus, both the first light-emitting devices 21 and the second light-emitting devices 22 can be evenly arranged in the display panel. Therefore, in the display mode where the first light-emitting devices 21 emit light and the second light-emitting devices 22 do not emit light, and in the display mode where the first light-emitting devices 21 do not emit light and the second light-emitting devices 22 emit light, the color consistency and uniformity in different regions of the display panel during display are ensured. At the same time, along the first direction X, a first light-emitting device 21 is arranged between two adjacent second light-emitting devices 22, and no connection layer is provided in the first light-emitting device 21. Thus, the arrangement of the first light-emitting devices 21 is conducive to reducing the transmission of lateral leakage current between two adjacent second light-emitting devices 22 arranged along the first direction X, improving the problem of sub-pixel brightening, and enhancing the display effect.

[0098] Figure 10 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 10 , in some alternative embodiments, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X;

[0099] In two adjacent light-emitting device groups 201 along the first direction X, the second light-emitting devices 22 are located on different sides of the first light-emitting devices 21.

[0100] Specifically, in the first light-emitting device group column 203 and the second light-emitting device group column 204, the light-emitting devices 20 in each light-emitting device group 201 are arranged along the first direction X, and in two adjacent light-emitting device groups 201 along the first direction X, the second light-emitting devices 22 are located on different sides of the first light-emitting devices 21, that is, there are some second light-emitting devices 22 in two adjacent light-emitting device groups 201 along the first direction X that are adjacent to each other, and there are some first light-emitting devices 21 in two adjacent light-emitting device groups 201 along the first direction X that are adjacent to each other, that is, a larger number of first light-emitting devices 21 are arranged together, and a larger number of second light-emitting devices 22 are arranged together, which is conducive to reducing the process complexity and improving the production efficiency.

[0101] Figure 11 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 11 , in some alternative embodiments, the light-emitting device group 20 includes an adjacent first light-emitting device 21 and a second light-emitting device 22;

[0102] In the same light-emitting device group 20, the first light-emitting device 21 and the second light-emitting device 22 are arranged along the third direction a. The vertical projection pattern of the first light-emitting device 21 on the substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate 10 along the first symmetry axis L1, and the first symmetry axis L1 extends along the fourth direction b, where the third direction a and the fourth direction b intersect.

[0103] Specifically, referring to Figure 11 , when the light-emitting device group 20 includes an adjacent first light-emitting device 21 and a second light-emitting device 22, in the same light-emitting device group 20, the first light-emitting device 21 and the second light-emitting device 22 are arranged along the third direction a. The vertical projection pattern of the first light-emitting device 21 on the substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate 10 along the first symmetry axis L1. In the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 emits light, the visual effect of the display panel can be effectively improved, making the display more uniform and beautiful.

[0104] In particular, when the vertical projection pattern of the first light-emitting device 21 on the substrate 10 and the vertical projection pattern of the second light-emitting device 22 on the substrate 10 are in the shapes of triangles, polygons, or irregular figures, etc., the vertical projection pattern of the first light-emitting device 21 on the substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate 10 along the first symmetry axis L1. In the display mode where the first light-emitting device 21 emits light and the second light-emitting device 22 emits light, the visual effect of the display panel can be effectively improved, making the display more uniform and beautiful.

[0105] It should be noted that Figure 11 exemplarily shows the shapes of the vertical projection patterns of the first light-emitting devices 21 on the substrate 10 and the vertical projection patterns of the second light-emitting devices 22 on the substrate 10 in the display panel. In other embodiments of the present disclosure, the vertical projection patterns of the first light-emitting devices 21 on the substrate 10 and the vertical projection patterns of the second light-emitting devices 22 on the substrate 10 may also be other shapes, and the present disclosure will not elaborate on them one by one here.

[0106] It can be understood that Figure 11 exemplarily shows that the third direction a is the same as the first direction X, and the fourth direction b is the same as the second direction Y. In other embodiments of the present disclosure, the third direction a and the first direction X may also be different, and the fourth direction b and the second direction Y may also be different. The present disclosure will not elaborate on them one by one here.

[0107] It should be noted that Figure 11Exemplarily shown in the figure is that when the vertical projection patterns of the first light-emitting devices 21 on the substrate substrate 10 and the vertical projection patterns of the second light-emitting devices 22 on the substrate substrate 10 in the display panel are in a polygonal shape, in the same light-emitting device group 20, the first light-emitting devices 21 and the second light-emitting devices 22 are arranged along the third direction a, and the vertical projection pattern of the first light-emitting device 21 on the substrate substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate substrate 10 along the first symmetry axis L1. In other embodiments of the present disclosure, exemplarily, referring to Figure 9 and Figure 10 , when the vertical projection pattern of the first light-emitting device 21 on the substrate substrate 10 and the vertical projection patterns of the second light-emitting devices 22 on the substrate substrate 10 are in a rectangular shape, in the same light-emitting device group 20, the first light-emitting devices 21 and the second light-emitting devices 22 are arranged along the third direction a, and the vertical projection pattern of the first light-emitting device 21 on the substrate substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate substrate 10 along the first symmetry axis L1. Of course, the shapes of the vertical projection pattern of the first light-emitting device 21 on the substrate substrate 10 and the vertical projection patterns of the second light-emitting devices 22 on the substrate substrate 10 can also be other shapes. At this time, in the same light-emitting device group 20, the first light-emitting devices 21 and the second light-emitting devices 22 are arranged along the third direction a, and the vertical projection pattern of the first light-emitting device 21 on the substrate substrate 10 is symmetric with the vertical projection pattern of the second light-emitting device 22 on the substrate substrate 10 along the first symmetry axis L1, which will not be elaborated one by one in the present disclosure.

[0108] Figure 12 is a schematic plan view of another display panel provided by the present disclosure, Figure 13 is Figure 12 a cross-sectional view of the display panel along B-B', referring to Figure 12 and Figure 13 , in some alternative embodiments, the display panel further includes a plurality of partition parts 50, and at least one partition part 50 is arranged between two adjacent second light-emitting devices 22.

[0109] Specifically, the second light-emitting device 22 includes a connection layer 224. Since the connection layers 224 in the adjacent second light-emitting devices 22 are connected to each other, it may cause current to flow from one second light-emitting device 22 to an adjacent second light-emitting device 22 through the connection layer 224, that is, generate lateral leakage current, so that the second light-emitting device 22 that should not emit light may emit light in response to the current flowing from the adjacent second light-emitting device 22, resulting in the problem of light stealing and reducing the display effect of the display panel.

[0110] The display panel is provided with a first light-emitting device 21 and a second light-emitting device 22 at the same time, that is, a part of the second light-emitting devices 22 is arranged adjacent to the first light-emitting device 21. The connection layer 224 is not provided in the first light-emitting device 21. Therefore, the arrangement of the first light-emitting device 21 is beneficial to reducing the transmission of the lateral leakage current between the second light-emitting devices 22, improving the problem of sub-pixel light stealing, and improving the display effect.

[0111] The display panel further includes a plurality of partition parts 50. At least one partition part 50 is arranged between two adjacent second light-emitting devices 22. Optionally, the partition part 50 includes a groove 51. Along the direction perpendicular to the plane where the substrate 10 is located, the groove 51 at least partially penetrates the pixel defining layer 40. Therefore, when the connection layer 224 is deposited subsequently, the arrangement of the groove 51 will increase the path length of the connection layer 224, and the inclined surface of the inner wall of the groove 51 will cause the thickness of the connection layer 224 to be thinned, and even the connection layer 224 will be truncated, thereby effectively hindering the transmission of the lateral leakage current between two adjacent second light-emitting devices 22, improving the problem of sub-pixel light stealing, and improving the display effect.

[0112] Figure 14 Yes Figure 12 Another cross-sectional view of the display panel along B-B', refer to Figure 12 And Figure 14 , the display panel further includes a plurality of partition parts 50. At least one partition part 50 is arranged between two adjacent second light-emitting devices 22. Optionally, the partition part 50 includes a protruding structure 52. The protruding structure 52 is located on the side of the pixel defining layer 40 away from the substrate 10. Therefore, when the connection layer 224 is deposited subsequently, the part of the connection layer 224 covering the protruding structure 52 is a raised structure. The arrangement of the protruding structure 52 will increase the path length of the connection layer 224, and the inclined surface of the protruding structure 52 will cause the thickness of the connection layer 224 to be thinned, thereby effectively hindering the transmission of the lateral leakage current between two adjacent second light-emitting devices 22, improving the problem of sub-pixel light stealing, and improving the display effect.

[0113] Continue to refer to Figure 12 In some optional embodiments, the partition part 50 is arranged corresponding to the second light-emitting device 22, and the vertical projection of the partition part 50 on the substrate 10 at least partially surrounds the vertical projection of the second light-emitting device 22 corresponding to it on the substrate 10.

[0114] Specifically, the partition portion 50 is correspondingly disposed with the second light-emitting device 22. The vertical projection of the partition portion 50 on the substrate 10 at least partially surrounds the vertical projection of the corresponding second light-emitting device 22 on the substrate 10. The partition portion 50 can effectively hinder the transmission of the lateral leakage current between the second light-emitting device 22 and the adjacent light-emitting device 20, improve the problem of sub-pixel light stealing, and improve the display effect. At the same time, only the partition portion 50 needs to be disposed around the second light-emitting device 22, and the partition portion 50 is not disposed around the first light-emitting device 21, reducing the number of the partition portions 50, thereby reducing the layout complexity, simplifying the overall structure, reducing the process difficulty, and not disposing the partition portion 50 around the first light-emitting device 21, so that more space can be released for the light-emitting region, which is beneficial to improving the aperture ratio.

[0115] Figure 15 is a schematic plan view of another display panel provided by the present disclosure. Refer to Figure 15 , in some alternative embodiments, the vertical projection pattern of the partition portion 50 on the substrate 10 includes a notch 53;

[0116] The arrangement directions of the notches 53 in the vertical projection patterns of two adjacent partition portions 50 on the substrate 10 are different.

[0117] Specifically, the vertical projection pattern of the partition portion 50 on the substrate 10 is a non-closed figure including the notch 53. The setting of the notch 53 can enable the cathode portion to form a continuous structure at the corresponding position of the notch 53, avoiding signals that cannot be transmitted to the cathode portion. At the same time, a transistor connected to the anode portion can be disposed at the corresponding position of the notch 53. When the partition portion 50 includes a groove, the setting of the partition portion 50 is prevented from affecting the setting of the transistor.

[0118] As Figure 16 described, Figure 16 is a position relationship diagram of a second light-emitting device and a partition portion provided by the present disclosure. The direction of the notch 53 in the vertical projection pattern of the partition portion 50 on the substrate 10 refers to the direction from the center of gravity X1 of the vertical projection of the second light-emitting device 22 corresponding to the partition portion 50 on the plane of the substrate 10 to the center X2 of the notch 53, that is, the arrow shown by X1X2. Among them, the center X2 of the notch 53 refers to the midpoint of the connection line between two adjacent end points in the partition portion 50 forming the notch 53. As Figure 16 shown, the partition portion 50 includes a first end point D1, a second end point D2, a third end point D3, and a fourth end point D4. One notch 53 is located between the first end point D1 and the second end point D2, and one notch 53 is located between the third end point D3 and the fourth end point D4. The midpoint of the connection line between the first end point D1 and the second end point D2 is the center X2 of the notch 53, and the midpoint of the connection line between the third end point D3 and the fourth end point D4 is the center X2 of the notch 53.

[0119] When the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is a regular figure, the center of gravity X1 of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is the center of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located.

[0120] It can be understood that the center of gravity of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located mentioned in the present disclosure can be defined as the center point of the mass distribution of the geometric shape of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located, that is, the centroid. If the geometric shape of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is a regular geometric shape, the geometric center of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located coincides with its center of gravity. For example, if the shape of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is a parallelogram, the intersection point of the two diagonals of the parallelogram is both its geometric center and its center of gravity. If the geometric shape of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is an asymmetric irregular geometric shape, its center of gravity can be determined by related technologies, but its geometric center is difficult to determine. At this time, the relative positional relationship between the geometric center and the center of gravity of the vertical projection of the second light-emitting device 22 on the plane where the substrate 10 is located is difficult to determine. It should be noted that the regular figures (regular geometric shapes) in the present invention satisfy at least one of the following conditions: 1) centrally symmetric figures; 2) axially symmetric figures with more than two axes of symmetry. Such as ellipses, parallelograms (neither rectangles nor rhombuses), circles, rounded rectangles, regular polygons, rectangles, rhombuses, etc. are all regular figures. For a centrally symmetric figure, its center of symmetry is the center (center of gravity); for an axially symmetric figure with more than two axes of symmetry, the intersection point of its two axes of symmetry is the center (center of gravity). The figures other than the corresponding regular figures are irregular figures.

[0121] The arrangement directions of the notches 53 in the vertical projection patterns of two adjacent partition parts 50 on the substrate 10 are different, so as to avoid the notches 53 in the vertical projection patterns of two adjacent partition parts 50 being arranged opposite to each other. Furthermore, it can be avoided that the lateral leakage current between two adjacent second light-emitting devices 22 is transmitted through the corresponding positions of the notches 53, thereby effectively hindering the transmission of the lateral leakage current between two adjacent second light-emitting devices 22, improving the problem of sub-pixel light stealing, and improving the display effect.

[0122] It should be noted that two adjacent partition parts 50 refer to that there is no light-emitting device 20 arranged between the two partition parts 50, so that the two partition parts 50 are directly adjacent, which is also applicable to other embodiments of the present disclosure.

[0123] Continue to refer to Figure 15, in some alternative embodiments, the vertical projection pattern of the partition portion 50 on the substrate 10 includes a notch 53; the notches 53 in the vertical projection patterns of two adjacent partition portions 50 on the substrate 10 are not arranged opposite to each other, so as to avoid the lateral leakage current between two adjacent second light-emitting devices 22 from being transmitted through the corresponding positions of the notches 53, thereby effectively hindering the transmission of the lateral leakage current between two adjacent second light-emitting devices 22, improving the problem of sub-pixel crosstalk, and enhancing the display effect.

[0124] In some alternative embodiments, by way of example, referring to Figure 12 and Figure 17 , Figure 17 is a schematic plan view of another display panel provided by the present disclosure. The arrangement directions of the notches 53 in the vertical projection patterns of two adjacent partition portions 50 on the substrate 10 may also be the same, and only need to satisfy that the notches 53 in the vertical projection patterns of two adjacent partition portions 50 on the substrate 10 are not arranged opposite to each other, so as to avoid the lateral leakage current between two adjacent second light-emitting devices 22 from being transmitted through the corresponding positions of the notches 53, thereby effectively hindering the transmission of the lateral leakage current between two adjacent second light-emitting devices 22, improving the problem of sub-pixel crosstalk, and enhancing the display effect.

[0125] Figure 18 is a top view structure diagram of a driving transistor in a first pixel circuit and a driving transistor in a second pixel circuit in the display panel provided by the present disclosure. Referring to Figure 1 and Figure 18 , in some alternative embodiments, the display panel further includes a plurality of pixel circuits, and the pixel circuit includes a driving transistor 60;

[0126] The pixel circuit includes a first pixel circuit connected to the first light-emitting device 21 and a second pixel circuit connected to the second light-emitting device 22. The vertical projection area of the channel of the driving transistor 60 in the first pixel circuit on the substrate is larger than the vertical projection area of the channel of the driving transistor 60 in the second pixel circuit on the substrate.

[0127] Specifically, the display panel further includes a plurality of pixel circuits, the pixel circuit includes a driving transistor 60, the driving transistor 60 includes a source electrode 61, a drain electrode 62, a gate electrode 63 and an active layer 64. The source electrode 61 and the drain electrode 62 are respectively electrically connected to both ends of the active layer 64. At least one insulating layer is provided between the active layer 64 and the gate electrode 63. The overlapping portion of the active layer 64 and the gate electrode 63 is the channel, and the larger the area of the channel, the greater the conductivity of the driving transistor 60.

[0128] When displaying the same brightness, the driving current for driving the first light-emitting device 21 to emit light is larger than the driving current for driving the second light-emitting device 22 to emit light. In the first pixel circuit connected to the first light-emitting device 21, the driving transistor 60 is the first driving transistor 601, and in the second pixel circuit connected to the second light-emitting device 22, the driving transistor 60 is the second driving transistor 602. The vertical projection area of the channel of the first driving transistor 601 on the substrate is larger than the vertical projection area of the channel of the second driving transistor 602 on the substrate. Thus, the first driving transistor 601 can carry a larger driving current, thereby meeting the higher current requirement of the first light-emitting device 21.

[0129] Reference Figure 1 and Figure 18 , in some alternative embodiments, the vertical projection area of the channel of the driving transistor 60 in the first pixel circuit on the substrate is larger than the vertical projection area of the channel of the driving transistor 60 in the second pixel circuit on the substrate. Correspondingly, the vertical projection area of the first pixel circuit on the substrate may be larger than the vertical projection area of the second pixel circuit on the substrate, that is, the vertical projection area of the first pixel circuit on the substrate is larger, so that a larger space can be provided for arranging the larger-sized driving transistor 60 in the first pixel circuit, which is beneficial to reducing the process difficulty of the first pixel circuit. And the vertical projection area of the first pixel circuit on the substrate is larger. Thus, when the size of the driving transistor 60 in the first pixel circuit is set larger, the distance between the transistors in the first pixel circuit can still be set larger, thereby reducing the mutual interference between adjacent transistors in the first pixel circuit and improving the stability and reliability of the first pixel circuit. Among them, the width of the vertical projection pattern of the first pixel circuit on the substrate along the second direction Y may be larger than the width of the vertical projection pattern of the second pixel circuit on the substrate along the second direction Y, and / or the length of the vertical projection pattern of the first pixel circuit on the substrate along the first direction X may be larger than the length of the vertical projection pattern of the second pixel circuit on the substrate along the first direction X.

[0130] Of course, in other embodiments of the present disclosure, the vertical projection area of the first pixel circuit on the substrate may be the same as the vertical projection area of the second pixel circuit on the substrate, and it only needs to satisfy that the vertical projection area of the channel of the driving transistor 60 in the first pixel circuit on the substrate is larger than the vertical projection area of the channel of the driving transistor 60 in the second pixel circuit on the substrate. The present disclosure will not elaborate herein.

[0131] Optionally, continue to refer to Figure 8, when a first light-emitting device 21 and a second light-emitting device 22 are included in a row of light-emitting devices 20 arranged in a first direction X, in a pixel circuit connected to the same row of light-emitting devices 20, a first pixel circuit connected to the first light-emitting device 21 is arranged in the first direction X, and a second pixel circuit connected to the second light-emitting device 22 is arranged in the first direction X, and the two are not arranged in the first direction X, that is, the first pixel circuit connected to the first light-emitting device 21 is arranged in one row, and the second pixel circuit connected to the second light-emitting device 22 is arranged in another row, so that the routing paths of the signal lines connected to the first light-emitting device 21 and the signal lines connected to the second light-emitting device 22 can be separated, effectively reducing the coupling effect between the signal lines connected to the first light-emitting device 21 and the signal lines connected to the second light-emitting device 22, improving the stability and reliability of signal transmission, and the separated routing paths are beneficial to reducing the complex wiring structure, which not only reduces the complexity of the wiring design, but also reduces the possible errors in the wiring process, improves the production efficiency, and reduces the production cost. And the first pixel circuit connected to the first light-emitting device 21 is arranged in one row, and the second pixel circuit connected to the second light-emitting device 22 is arranged in another row. Correspondingly, the driving circuit can work according to a simpler timing logic. For example, only process a row of first pixel circuits connected to the first light-emitting device 21 or only process a row of second pixel circuits connected to the second light-emitting device 22 at the same time, thereby reducing the complexity of timing control and the design difficulty of the driving circuit.

[0132] An embodiment of the present disclosure provides a driving method for a display panel, which is applied to a display panel. The display panel includes: a substrate substrate 10; a plurality of light-emitting devices 20, the light-emitting devices 20 are located on one side of the substrate substrate 10, and the light-emitting devices 20 include a first light-emitting device 21 and a second light-emitting device 22; the first light-emitting device 21 includes a first anode portion 211 and a first cathode portion 212 arranged opposite to each other, and a first light-emitting layer 213 located between the first anode portion 211 and the first cathode portion 212; the second light-emitting device 22 includes a second anode portion 221 and a second cathode portion 222 arranged opposite to each other, and at least two second light-emitting layers 223 located between the second anode portion 221 and the second cathode portion 222, a connection layer 224 is arranged between adjacent two second light-emitting layers 223, and in the same second light-emitting device 22, the light-emitting colors of the second light-emitting layers 223 are the same.

[0133] The driving method includes:

[0134] In the first mode, the brightness of the display panel is L1, the first light-emitting device 21 emits light, and the second light-emitting device 22 does not emit light;

[0135] In the second mode, the brightness of the display panel is L2, the second light-emitting device 22 emits light, or the first light-emitting device 21 and the second light-emitting device 22 emit light simultaneously, where L1 < L2.

[0136] Specifically, the display panel provided by the embodiments of the present disclosure includes a first light-emitting device 21 and a second light-emitting device 22. Among them, the first light-emitting device 21 includes a first anode portion 211 and a first cathode portion 212 which are oppositely arranged, and a first light-emitting layer 213 located between the first anode portion 211 and the first cathode portion 212, that is, the first light-emitting device 21 is a single-layer light-emitting device.

[0137] The second light-emitting device 22 includes a second anode portion 221 and a second cathode portion 222 which are oppositely arranged, and at least two second light-emitting layers 223 located between the second anode portion 221 and the second cathode portion 222. A connection layer 224 is provided between adjacent two second light-emitting layers 223, and in the same second light-emitting device 22, the light-emitting colors of the second light-emitting layers 223 are the same, that is, the second light-emitting device 22 is a stacked light-emitting device. That is, the second light-emitting device 22 includes at least two serially connected light-emitting units, and adjacent light-emitting units are connected by the connection layer 224. The stacked light-emitting device has higher device efficiency and longer life.

[0138] When displaying the same brightness, the driving current for driving the first light-emitting device 21 to emit light is larger than the driving current for driving the second light-emitting device 22 to emit light. Thus, in the low gray-scale display mode, the difference caused by the change in the characteristics of the thin-film transistor in the pixel circuit electrically connected to the first light-emitting device 21 due to the decrease in the driving current for driving the first light-emitting device 21 to emit light is relatively small.

[0139] In the display panel provided by the embodiments of the present disclosure, the first light-emitting device 21 and the second light-emitting device 22 are both provided. The first light-emitting device 21 and the second light-emitting device 22 are different types of light-emitting devices 20. Among them, the first light-emitting device 21 is a single-layer light-emitting device, and the second light-emitting device 22 is a stacked light-emitting device. Thus, the light-emitting states of the two light-emitting devices 20 can be flexibly changed according to the application scenario or usage requirements. For example, in a scenario with high brightness requirements, the second light-emitting device 22 can be mainly relied on to emit light. The stacked light-emitting device usually has higher light-emitting efficiency and longer service life. While in low-power consumption or low gray-scale display, the first light-emitting device 21 can be utilized more. The single-layer light-emitting device performs well in low gray-scale display and can provide better contrast and color restoration. This design supports multiple display modes, and can operate both in a high-efficiency mode and in a mode that requires long life and better low gray-scale display effect, thereby taking into account high efficiency, long life, and low gray-scale display effect, and meeting the needs of different users and applications.

[0140] Specifically, the display panel provided by the present disclosure has a first mode and a second mode. In the first mode, the brightness of the display panel is L1, and in the second mode, the brightness of the display panel is L2, where L1 < L2. That is, the first mode is a low gray-scale display mode, and the second mode is a non-low gray-scale display mode.

[0141] In the low gray-scale display mode, the difference caused by the change in the characteristics of the thin-film transistor in the pixel circuit electrically connected to the first light-emitting device 21 due to the decrease in the driving current for driving the first light-emitting device 21 to emit light is relatively small. In the low gray-scale display mode, the first light-emitting device 21 emits light, and the second light-emitting device 22 does not emit light, thereby improving the local uniformity and contrast uniformity when the display panel is displayed. Moreover, since the lateral leakage current phenomenon of the first light-emitting device 21 is lighter than that of the second light-emitting device 22, in the low gray-scale display mode, the first light-emitting device 21 emits light, and the second light-emitting device 22 does not emit light, which can effectively reduce the influence of leakage current crosstalk on the color gamut and the overall display effect, thereby improving the low gray-scale display effect. At the same time, in the non-low gray-scale display mode, the second light-emitting device 22 emits light, and the second light-emitting device 22 has a higher device efficiency and a longer lifespan, thereby improving the light-emitting efficiency and service life of the display panel. That is, the display panel provided by the embodiments of the present disclosure can balance high efficiency, long lifespan, and low gray-scale display effect.

[0142] It should be noted that the boundary between the low gray-scale display mode and the non-low gray-scale display mode can be set according to actual needs, and the present disclosure does not make specific limitations in this regard.

[0143] Continue to refer to Figure 1 and Figure 2 , in some alternative embodiments, the second mode includes a first display mode and a second display mode. In the first display mode, the resolution of the display panel is greater than that in the second display mode;

[0144] In the first display mode, the first light-emitting device 21 and the second light-emitting device 22 emit light simultaneously;

[0145] In the second display mode, the first light-emitting device 21 does not emit light, and the second light-emitting device 22 emits light.

[0146] Specifically, the display panel provided by the present disclosure has a first display mode and a second display mode in the second mode. In the first display mode, the resolution of the display panel is greater than that in the second display mode, that is, the first display mode is a high-resolution display mode, the second display mode is a low-resolution display mode, and both the high-resolution display mode and the low-resolution display mode are non-low gray-scale display modes. In the high-resolution display mode, the second light-emitting device 22 emits light, and the first light-emitting device 21 also emits light, so that the display panel can achieve a high-resolution display effect. In the low-resolution display mode, the second light-emitting device 22 emits light, and the first light-emitting device 21 does not emit light, so that the display panel can achieve a low-resolution display effect and effectively reduce energy consumption.

[0147] It should be noted that the boundary between the high-resolution display mode and the low-resolution display mode can be set according to actual needs, and the present disclosure does not make specific limitations thereon.

[0148] As Figure 19 shown, Figure 19 is a schematic plan view of a display device provided by the present disclosure. The embodiment of the present disclosure also provides a display device 1000, including the display panel 100 provided in any of the above embodiments. Figure 19 The provided embodiments only take a mobile phone as an example to illustrate the display device. It can be understood that the display device provided by the embodiments of the present application can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, vehicle-mounted displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present disclosure do not make special limitations thereon.

[0149] The display device provided by the embodiment of the present disclosure has the same technical features as the display panel provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0150] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0151] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of light emitting devices, wherein the light emitting devices are located on one side of the base substrate, and the light emitting devices include a first light emitting device and a second light emitting device; The first light emitting device comprises a first anode portion and a first cathode portion which are arranged opposite to each other, and a first light emitting layer located between the first anode portion and the first cathode portion; The second light-emitting device includes a second anode portion and a second cathode portion that are arranged opposite to each other, and at least two second light-emitting layers located between the second anode portion and the second cathode portion, a connecting layer is arranged between two adjacent second light-emitting layers, and in the same second light-emitting device, the light-emitting colors of each second light-emitting layer are the same.

2. The display panel according to claim 1, characterized in that: The display panel includes a plurality of light emitting device groups, each of which includes one first light emitting device and at least one second light emitting device that are adjacently arranged. In the same light emitting device group, the light emitting color of the first light emitting device is the same as the light emitting color of the second light emitting device.

3. The display panel according to claim 2, characterized in that: In the same light-emitting device group, an area of ​​a vertical projection pattern of the first light-emitting device on the base substrate is smaller than or equal to an area of ​​a vertical projection pattern of the second light-emitting device on the base substrate.

4. The display panel according to claim 2, characterized in that: In the same light-emitting device group, the first light-emitting layer in the first light-emitting device is arranged in the same layer as the second light-emitting layer in the second light-emitting device.

5. The display panel according to claim 4, characterized in that: In the same light-emitting device group, the first light-emitting layer in the first light-emitting device is connected to a layer of the second light-emitting layer in the second light-emitting device.

6. The display panel according to claim 2, characterized in that: The display panel includes a plurality of light emitting device units, each of which includes at least two light emitting device groups arranged along a first direction. In the same light emitting device unit, light emitting devices in different light emitting device groups emit different colors.

7. The display panel according to claim 6, characterized in that: The light emitting devices in the light emitting device group are arranged along a second direction, wherein the first direction intersects with the second direction; In each of the light emitting device groups, the second light emitting device is located on the same side of the first light emitting device, or, in two adjacent light emitting device groups along the second direction, the second light emitting device is located on different sides of the first light emitting device.

8. The display panel according to claim 2, characterized in that: The light-emitting device group includes a first light-emitting device group, a second light-emitting device group and a third light-emitting device group, and the light-emitting colors of the light-emitting devices in the first light-emitting device group, the light-emitting colors of the light-emitting devices in the second light-emitting device group and the light-emitting colors of the light-emitting devices in the third light-emitting device group are all different; The display panel includes a first light emitting device group column and a second light emitting device group column which are alternately and repeatedly arranged along a first direction; The first light emitting device group column includes the first light emitting device group and the second light emitting device group alternately and repeatedly arranged along a second direction, and the second light emitting device group column includes a plurality of the third light emitting device groups arranged along the second direction, wherein the first direction and the second direction intersect; The light emitting devices in the first light emitting device group and the second light emitting device group are arranged along the first direction, and the light emitting devices in the third light emitting device group are arranged along the first direction or the second direction.

9. The display panel according to claim 6 or 8, characterized in that: The light emitting devices in the light emitting device group are arranged along the first direction; In each of the light emitting device groups, the second light emitting device is located on the same side of the first light emitting device, or, in two adjacent light emitting device groups along the first direction, the second light emitting device is located on different sides of the first light emitting device.

10. The display panel according to claim 2, characterized in that: The light emitting device group includes one first light emitting device and one second light emitting device which are adjacently arranged; In the same light-emitting device group, the first light-emitting device and the second light-emitting device are arranged along a third direction, a vertical projection pattern of the first light-emitting device on the substrate substrate and a vertical projection pattern of the second light-emitting device on the substrate substrate are symmetrical along a first symmetry axis, and the first symmetry axis extends along a fourth direction, wherein the third direction and the fourth direction intersect.

11. The display panel according to claim 1, characterized in that: The display panel further includes a plurality of partitioning parts, and at least one partitioning part is disposed between two adjacent second light emitting devices.

12. The display panel according to claim 11, characterized in that: The partition portion is arranged corresponding to the second light emitting device, and a vertical projection of the partition portion on the base substrate at least partially surrounds a vertical projection of the corresponding second light emitting device on the base substrate.

13. The display panel according to claim 12, characterized in that: The vertical projection pattern of the partition portion on the base substrate includes a notch; The notches of two adjacent partition parts are arranged in different orientations in the vertical projection pattern of the base substrate.

14. The display panel according to claim 12, characterized in that: The vertical projection pattern of the partition portion on the base substrate includes a notch; The notches of two adjacent partition parts in the vertical projection pattern of the base substrate are not arranged opposite to each other.

15. The display panel according to claim 1, characterized in that: The display panel further comprises a plurality of pixel circuits, wherein the pixel circuits comprise driving transistors; The pixel circuit includes a first pixel circuit connected to the first light-emitting device, and a second pixel circuit connected to the second light-emitting device, wherein a vertical projection area of ​​a channel of the driving transistor in the first pixel circuit on the substrate is larger than a vertical projection area of ​​a channel of the driving transistor in the second pixel circuit on the substrate.

16. A method for driving a display panel, characterized in that: The display panel comprises: a base substrate; a plurality of light-emitting devices, wherein the light-emitting devices are located on one side of the base substrate, and the light-emitting devices include a first light-emitting device and a second light-emitting device; the first light-emitting device includes a first anode portion and a first cathode portion that are arranged opposite to each other, and a first light-emitting layer between the first anode portion and the first cathode portion; the second light-emitting device includes a second anode portion and a second cathode portion that are arranged opposite to each other, and at least two second light-emitting layers between the second anode portion and the second cathode portion, a connecting layer is provided between two adjacent second light-emitting layers, and in the same second light-emitting device, the light-emitting colors of the second light-emitting layers are the same; The driving method comprises: In the first mode, the brightness of the display panel is L1, the first light emitting device emits light, and the second light emitting device does not emit light; In the second mode, the brightness of the display panel is L2, the second light emitting device emits light, or the first light emitting device and the second light emitting device emit light at the same time; Among them, L1<L2.

17. The driving method according to claim 16, characterized in that: The second mode includes a first display mode and a second display mode, and the resolution of the display panel in the first display mode is greater than the resolution of the display panel in the second display mode; In the first display mode, the first light emitting device and the second light emitting device emit light simultaneously; In the second display mode, the first light emitting device does not emit light, and the second light emitting device emits light.

18. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 15.

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