Display panel and display apparatus
Patent Information
- Application Number
- PCT/CN2026/072116
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-24
- Filing Date
- 2026-01-13
- Publication Date
- 2026-08-27
Smart Images
Figure CN2026072116_27082026_PF_FP_ABST
Abstract
Description
Display panel and display device
[0001] This application claims priority to Chinese Patent Application No. 202510207305.8, filed on February 24, 2025, entitled “Display Panel and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology
[0003] Display panels that use organic light-emitting diodes (OLEDs) to achieve display functions are called OLED display panels. Due to their high color gamut, thinness, and flexibility, they have become the mainstream display structure.
[0004] OLEDs typically include an anode, a cathode, and a light-emitting layer located between the anode and the cathode. The light-emitting layer emits light by applying different voltages to the anode and the cathode respectively. Some of the light emitted by the light-emitting layer needs to be reflected by the anode and then emitted on the light-emitting side of the OLED display panel.
[0005] However, because there is a metal conductive layer under the OLED, which includes multiple conductive lines, the presence of conductive lines causes the anode of the OLED to be uneven. As a result, the emission angle of the light reflected from the anode is relatively large, which leads to a lower light emission efficiency of the OLED front and affects the display effect of the display panel. Summary of the Invention
[0006] This application provides a display panel and a display device. It can solve the problem of poor display effect in existing display panels. The technical solution is as follows:
[0007] On one hand, a display panel is provided, the display panel comprising: a substrate, a pixel driving circuit, a first conductive layer, a first planarization layer, a pixel definition layer, and a light-emitting device;
[0008] The number of pixel driving circuits is multiple, and all of the multiple pixel driving circuits are located on the same side of the substrate;
[0009] The first conductive layer is located on the side of the pixel driving circuit away from the substrate, and the first conductive layer includes: a plurality of transition electrodes electrically connected to the plurality of pixel driving circuits;
[0010] The first planarization layer is located on the side of the first conductive layer away from the substrate. The first planarization layer includes at least: a first sub-planarization layer and a second sub-planarization layer stacked together. The first sub-planarization layer is closer to the substrate than the second sub-planarization layer, and the flatness of the second sub-planarization layer on the side away from the substrate is higher than the flatness of the first sub-planarization layer on the side away from the substrate.
[0011] The pixel definition layer is located on the side of the first planarization layer opposite to the substrate, and the pixel definition layer has a plurality of first pixel openings;
[0012] The number of light-emitting devices is multiple, and the multiple light-emitting devices correspond to the multiple first pixel openings and the multiple transition electrodes; at least a portion of the light-emitting devices are located in the corresponding first pixel openings and are electrically connected to the corresponding transition electrodes.
[0013] Wherein, the orthographic projection of the light-emitting device on the substrate overlaps with the orthographic projection of the first conductive layer on the substrate.
[0014] Optionally, the first sub-planarization layer has a plurality of first vias, and the second sub-planarization layer has a plurality of second vias, wherein the plurality of first vias and the plurality of second vias are connected to each other.
[0015] The plurality of first vias correspond to the plurality of transition electrodes, and the plurality of second vias correspond to the plurality of light-emitting devices. The light-emitting devices are electrically connected to the corresponding transition electrodes through the corresponding second vias and the first vias.
[0016] Optionally, the first orthographic projection of the opening on the side of the first via facing away from the substrate is located within the second orthographic projection of the opening on the side of the second via facing the substrate; and the outer boundary of the first orthographic projection does not coincide with the outer boundary of the second orthographic projection.
[0017] Optionally, the thickness of both the first sub-planarization layer and the second sub-planarization layer in the direction perpendicular to the substrate ranges from 1 micrometer to 1.5 micrometers.
[0018] Optionally, the plurality of light-emitting devices includes: a plurality of first-type light-emitting devices and a plurality of second-type light-emitting devices;
[0019] The plurality of first-type light-emitting devices and the plurality of second-type light-emitting devices are arranged in multiple columns along the first direction and in multiple rows along the second direction;
[0020] The first conductive layer further includes: multiple conductive blocks and multiple conductive lines; the overall extension direction of the conductive lines is parallel to the second direction;
[0021] The plurality of conductive blocks correspond to a plurality of first-type light-emitting devices, and the orthographic projection of the first-type light-emitting device on the substrate is located within the orthographic projection of the corresponding conductive block on the substrate; the orthographic projection of the second-type light-emitting device on the substrate overlaps with the orthographic projection of at least one conductive line on the substrate.
[0022] Optionally, the first conductive layer further includes: a connecting trace, the two ends of which are electrically connected to two adjacent conductive blocks distributed in the second direction.
[0023] Optionally, in the second direction, two connecting traces are arranged between two adjacent conductive blocks, and the two connecting traces are arranged opposite to each other in the first direction.
[0024] Wherein, two adjacent conductive blocks in the second direction, and two connecting lines located between the two adjacent conductive blocks, are used to form a first hollow area, and at least one of the transition electrodes are distributed in the first hollow area.
[0025] Optionally, at least two conductive lines are distributed between two adjacent columns of the conductive blocks;
[0026] The orthographic projection of the second type of light-emitting device on the substrate overlaps with the orthographic projection of at least two conductive lines distributed between two adjacent columns of conductive blocks on the substrate.
[0027] Optionally, at least two conductive lines distributed between two adjacent columns of conductive blocks include: a first conductive line and a second conductive line; the overall extension direction of the first conductive line and the second conductive line is parallel to the second direction;
[0028] The first conductive line includes: a plurality of first segments and a plurality of second segments; the plurality of first segments and the plurality of second segments are alternately connected in the second direction; the orthographic projection of the first segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate, and the second segments are distributed in the first direction between two adjacent first type of light-emitting devices;
[0029] The second conductive line includes: a plurality of third segments and a plurality of fourth segments; the plurality of third segments and the plurality of fourth segments are alternately connected in the second direction; the orthographic projection of the third segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate, and the fourth segments are distributed in the first direction between two adjacent first type of light-emitting devices.
[0030] Optionally, for the second line segment and the fourth line segment distributed between two adjacent first-type light-emitting devices in the first direction, the second line segment and the fourth line segment are used to form a second hollow area;
[0031] Wherein, the maximum distance of the second hollow area in the first direction is greater than the distance between the first line segment and the third line segment that are adjacent to each other in the first direction.
[0032] Optionally, the display panel further includes: a plurality of separately disposed first electrodes; the plurality of first electrodes being electrically connected to the plurality of transition electrodes; the plurality of first electrodes corresponding to the plurality of light-emitting devices, wherein the anode of the light-emitting device is a portion of the corresponding first electrode;
[0033] Wherein, the orthographic projection of the first electrode corresponding to the second type of light-emitting device on the substrate overlaps with the orthographic projections of the first line segment and the third line segment that are adjacent to each other in the first direction on the substrate;
[0034] For the second line segment and the fourth line segment distributed in the first direction between two adjacent first-type light-emitting devices, the orthographic projection of the second line segment on the substrate overlaps with the orthographic projection of the first electrode corresponding to one of the first-type light-emitting devices on the substrate, and the orthographic projection of the fourth line segment on the substrate overlaps with the orthographic projection of the first electrode corresponding to another of the first-type light-emitting devices on the substrate.
[0035] Optionally, at least two conductive lines distributed between two adjacent columns of conductive blocks include: a third conductive line and a fourth conductive line; the third conductive line is distributed on the side of the first conductive line away from the second conductive line, and the fourth conductive line is distributed on the side of the second conductive line away from the first conductive line;
[0036] The third conductive line includes: a plurality of separately arranged fifth segments, the extension directions of which are all parallel to the second direction, the plurality of fifth segments being arranged sequentially along the second direction, and the plurality of fifth segments being electrically connected to a plurality of conductive blocks in a column of conductive blocks; the orthographic projection of the fifth segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate;
[0037] The fourth conductive line includes: a plurality of separately arranged sixth segments, the extension directions of which are all parallel to the second direction, the plurality of sixth segments are arranged sequentially along the second direction, and the plurality of sixth segments are electrically connected to a plurality of conductive blocks in a column of conductive blocks; the orthographic projection of the sixth segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate.
[0038] Optionally, the display panel further includes: a second planarization layer, the second planarization layer being located between the first planarization layer and the pixel definition layer, the second planarization layer having a plurality of second pixel openings, the plurality of second pixel openings being correspondingly connected to a plurality of first pixel openings;
[0039] At least a portion of the light-emitting device is located within the second pixel opening.
[0040] Optionally, the display panel further includes: a plurality of separately disposed first electrodes; the plurality of first electrodes being electrically connected to the plurality of transition electrodes; the plurality of first electrodes corresponding to the plurality of light-emitting devices, wherein the anode of the light-emitting device is a portion of the corresponding first electrode;
[0041] The second pixel opening corresponds to the plurality of first electrodes. A portion of the first electrodes is located on the side of the second planarization layer away from the substrate, and another portion of the first electrodes is located within the corresponding second pixel opening and covers the sidewall of the corresponding second pixel opening.
[0042] On the other hand, a display device is provided, the display device comprising: a power supply component, and a display panel connected to the power supply component, the display panel being any of the display panels described above.
[0043] The beneficial effects of the technical solutions provided in this application include at least the following:
[0044] Since the first planarization layer includes at least a first sub-planarization layer and a second sub-planarization layer stacked together, the first sub-planarization layer is closer to the substrate than the second sub-planarization layer, and the flatness of the second sub-planarization layer on the side facing away from the substrate is higher than that of the first sub-planarization layer on the same side. In this case, the better flatness of the side of the first planarization layer facing away from the substrate ensures higher stability of the light-emitting device formed on this side. Especially for the second type of light-emitting device, the better flatness of the side of the first planarization layer facing away from the substrate can effectively improve the flatness of the anode of the second type of light-emitting device, increase the front light emission efficiency of the second type of light-emitting device, and improve the display effect of the display panel. Attached Figure Description
[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0046] Figure 1 is a top view of a display panel provided in an embodiment of this application;
[0047] Figure 2 is a partial enlarged view of the display panel shown in Figure 1 at point C;
[0048] Figure 3 is a cross-sectional schematic diagram of the display panel shown in Figure 2 at AA';
[0049] Figure 4 is a cross-sectional schematic diagram of the display panel shown in Figure 2 at BB';
[0050] Figure 5 is a cross-sectional schematic diagram of the display panel provided in the embodiment of this application at point AA' in Figure 2;
[0051] Figure 6 is an enlarged schematic diagram of a portion of the film layers in Figure 5;
[0052] Figure 7 is another enlarged view of the display panel shown in Figure 1 at point C;
[0053] Figure 8 is an enlarged schematic diagram of the two adjacent first and second conductive lines in Figure 7.
[0054] Figure 9 is another enlarged view of the display panel shown in Figure 1 at point C;
[0055] Figure 10 is another cross-sectional view of the display panel provided in the embodiment of this application at point AA' in Figure 2;
[0056] Figure 11 is an enlarged schematic diagram of a portion of the film layers in Figure 10;
[0057] Figure 12 is another cross-sectional view of the display panel provided in the embodiment of this application at point AA' in Figure 2. Detailed Implementation
[0058] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0059] Please refer to Figures 1, 2, and 3. Figure 1 is a top view of a display panel provided in an embodiment of this application. Figure 2 is a partial enlarged view of the display panel shown in Figure 1 at point C. Figure 3 is a cross-sectional schematic diagram of the display panel shown in Figure 2 at point AA'. The display panel 000 may include: a substrate 100, a pixel driving circuit P, a first conductive layer 200, a first planarization layer 300, a pixel definition layer 400, and a light-emitting device 500.
[0060] The display panel 000 has multiple pixel driving circuits P, all of which are located on the same side of the substrate 100. The pixel driving circuits P can be electrically connected to the light-emitting device 500 and drive the light-emitting device 500 to emit light.
[0061] The first conductive layer 200 of the display panel 000 is located on the side of the pixel driving circuit P away from the substrate 100, and the first conductive layer 200 may include a plurality of transition electrodes Z that are electrically connected to the plurality of pixel driving circuits P.
[0062] The first planarization layer 300 of the display panel 000 is located on the side of the first conductive layer 200 away from the substrate 100.
[0063] The pixel definition layer 400 of the display panel 000 is located on the side of the first planarization layer 300 away from the substrate 100, and the pixel definition layer 400 has a plurality of first pixel openings K1.
[0064] The display panel 000 has multiple light-emitting devices 500, each corresponding to a plurality of first pixel openings K1. At least a portion of the light-emitting devices 500 is located within a corresponding first pixel opening K1, and the portion of the light-emitting device 500 located within the first pixel opening K1 is in contact with the side of the first planarization layer 300 facing away from the substrate 100. The multiple light-emitting devices 500 also correspond to multiple transition electrodes Z and are electrically connected to the corresponding transition electrodes Z. That is, the light-emitting devices 500 achieve electrical connection with the pixel driving circuit P by being electrically connected to their corresponding transition electrodes Z.
[0065] For example, the display panel 000 may further include: a first electrode layer 501, a light-emitting layer 502, and a second electrode layer 503. The first electrode layer 501 may be located between the first planarization layer 300 and the pixel definition layer 400, the light-emitting layer 502 may be located on the side of the pixel definition layer 400 facing away from the substrate 100, and the second electrode layer 503 may be located on the side of the light-emitting layer 502 facing away from the substrate 100.
[0066] The first electrode layer 501 may include a plurality of first electrodes 5011 corresponding to a plurality of first pixel openings K1. For any one first electrode 5011, the orthographic projection of the first pixel opening K1 onto the substrate 100 lies within the orthographic projection of the corresponding first electrode 5011 onto the substrate 100. Therefore, the portion of the light-emitting layer 502 distributed within the first pixel opening K1 can contact the corresponding first electrode 5011. In this case, for any one first pixel opening K1, the portion of the first electrode 5011 that contacts the light-emitting layer 502 at the first pixel opening K1 (often also referred to as the anode), the portion of the light-emitting layer 502 distributed within the first pixel opening K1, and the portion of the second electrode layer 503 distributed within the first pixel opening K1 (often also referred to as the cathode) can constitute a light-emitting device 500.
[0067] After the light-emitting device 500 is driven to emit light, some of the light emitted by the light-emitting layer 502 will be directed toward the anode. In order to improve the light utilization rate and reduce the power consumption of the display panel 000, the anode can use a reflective material to reflect the light directed toward the anode to the light-emitting side of the display panel 000 for emission, thereby improving the display brightness.
[0068] In this application, the orthographic projection of the light-emitting device 500 on the substrate 100 overlaps with the orthographic projection of the first conductive layer 200 on the substrate 100.
[0069] For example, as shown in Figures 1 and 2, the first conductive layer 200 may further include a plurality of conductive blocks 201 and a plurality of conductive lines 202. The plurality of light-emitting devices 500 may include a plurality of first-type light-emitting devices 500a and a plurality of second-type light-emitting devices 500b, both arranged in multiple columns along a first direction X and in multiple rows along a second direction Y. Here, the first direction X intersects the second direction Y. For example, the first direction X may be perpendicular to the second direction Y. The plurality of first-type light-emitting devices 500a correspond to the plurality of conductive blocks 201, and the orthographic projection of the first-type light-emitting device 500a on the substrate 100 lies within the orthographic projection of the corresponding conductive block 201 on the substrate 100. The orthographic projections of the plurality of second-type light-emitting devices 500b on the substrate 100 overlap with the orthographic projection of at least one conductive line 202 on the substrate 100.
[0070] It should be noted that the first conductive layer 200 can be a patterned conductive layer. The first planarization layer 300 on the side of the first conductive layer 200 facing away from the substrate 100 is made of organic material, which makes the flatness of the side of the first planarization layer 300 facing away from the substrate 100 relatively high, so as to ensure the high stability of the light-emitting device 500 subsequently formed on the side of the first planarization layer 300 facing away from the substrate 100. However, the current first planarization layer 300 is relatively thin and has weak planarization ability, which will affect the stability of the light-emitting device 500 subsequently formed on the side of the first planarization layer 300 facing away from the substrate 100, especially the stability of the second type of light-emitting device 500b.
[0071] For example, please refer to Figure 4, which is a cross-sectional schematic diagram of the display panel shown in Figure 2 at BB'. Since the orthographic projection of the first type of light-emitting device 500a on the substrate 100 lies within the orthographic projection of the corresponding conductive block 201 on the substrate 100, the anode of the first type of light-emitting device 500a formed on the side of the first planarization layer 300 away from the substrate 100 has good flatness. In this case, the light emission angle of the light reflected by the anode of the first type of light-emitting device 500a is small, which can improve the front light emission efficiency of the first type of light-emitting device 500a. Therefore, the first planarization layer 300 is thinner and has weaker planarization capability, and its impact on the stability of the first type of light-emitting device 500a is smaller.
[0072] Referring to Figure 3, since the orthographic projection of the second type of light-emitting device 500b on the substrate 100 overlaps with the orthographic projection of at least one conductive line 202 on the substrate 100, the flatness of the anode of the second type of light-emitting device 500b formed on the side of the first planarization layer 300 away from the substrate 100 is poor. In this case, the side of the anode of the second type of light-emitting device 500b away from the substrate 100 has at least one protrusion corresponding to at least one conductive line 202. The side of this protrusion reflects the light emitted by the second type of light-emitting device 500b, and the reflected light has a large emission angle, resulting in a low front light emission efficiency of the second type of light-emitting device 500b, thereby affecting the display effect of the display panel 000.
[0073] Therefore, the first planarization layer 300 is relatively thin and has weak planarization capability, which has a significant impact on the stability of the second type of light-emitting device 500b.
[0074] It should be noted that, as shown in Figure 1, the first type of light-emitting device 500a may include alternating red light-emitting devices 500a1 and blue light-emitting devices 500a2, and the second type of light-emitting device 500b may be a green light-emitting device. When the flatness of the anode of the second type of light-emitting device 500b is poor, the front light emission efficiency of the second type of light-emitting device 500b is lower than that of the first type of light-emitting device 500a. This results in the intensity of green light being less than the intensity of red and blue light, which can easily lead to color shift in the displayed image on the display panel 000, affecting the accurate reproduction of colors and thus the display effect of the display panel 000.
[0075] In this embodiment, please refer to Figure 5, which is a cross-sectional schematic diagram of the display panel provided in this embodiment at point AA' in Figure 2. The first planarization layer 300 in the display panel 000 provided in this embodiment may include: a first sub-planarization layer 301 and a second sub-planarization layer 302 stacked together. The first sub-planarization layer 301 is closer to the substrate 100 than the second sub-planarization layer 302, and the flatness of the side of the second sub-planarization layer 302 facing away from the substrate 100 is higher than the flatness of the side of the first sub-planarization layer 301 facing away from the substrate 100. In this case, the flatness of the side of the first planarization layer 300 facing away from the substrate 100 is better, thereby ensuring that the light-emitting device 500 formed on the side of the first planarization layer 300 facing away from the substrate 100 has higher stability. In particular, for the second type of light-emitting device 500b, the flatness of the side of the first planarization layer 300 away from the substrate 100 is better, which can effectively improve the flatness of the anode of the second type of light-emitting device 500b, improve the front light emission efficiency of the second type of light-emitting device 500b, and improve the display effect of the display panel 000.
[0076] In summary, the display panel provided in this application includes: a substrate, a pixel driving circuit, a first conductive layer, a first planarization layer, a pixel definition layer, and a light-emitting device. Since the first planarization layer includes at least a first sub-planarization layer and a second sub-planarization layer stacked together, the first sub-planarization layer is closer to the substrate than the second sub-planarization layer, and the flatness of the second sub-planarization layer on the side facing away from the substrate is higher than that of the first sub-planarization layer on the same side. In this case, the flatness of the side of the first planarization layer facing away from the substrate is better, thereby ensuring higher stability of the light-emitting device formed on the side of the first planarization layer facing away from the substrate. Especially for the second type of light-emitting device, the better flatness of the side of the first planarization layer facing away from the substrate can effectively improve the flatness of the anode of the second type of light-emitting device, increase the front light emission efficiency of the second type of light-emitting device, and improve the display effect of the display panel.
[0077] In this embodiment, please refer to FIG6, which is an enlarged schematic diagram of a portion of the film layers in FIG5. The first sub-planarization layer 301 has a plurality of first vias 301a, and the second sub-planarization layer 302 has a plurality of second vias 302a, and the plurality of first vias 301a and the plurality of second vias 302a are connected to each other.
[0078] In this configuration, multiple first vias 301a correspond to multiple transition electrodes Z, and multiple second vias 302a correspond to multiple light-emitting devices 500. Each light-emitting device 500 is electrically connected to its corresponding transition electrode Z through its corresponding second via 302a and first via 301a. Since multiple transition electrodes Z are electrically connected to multiple pixel driving circuits P, each light-emitting device 500 can be electrically connected to its corresponding transition electrode Z through its corresponding second via 302a and first via 301a, thereby achieving electrical connection between the light-emitting device 500 and its corresponding pixel driving circuit P. The pixel driving circuit P is used to drive the corresponding light-emitting device 500 to emit light.
[0079] It should be noted that both the first via 301a and the second via 302a can have various shapes. For example, both the first via 301a and the second via 302a are circular vias. In this embodiment, when both the first via 301a and the second via 302a are circular vias, the diameter of the first via 301a can range from 3 micrometers to 4 micrometers, and the diameter of the second via 302a can range from 3.5 micrometers to 5 micrometers.
[0080] Both the first sub-planarization layer 301 and the second sub-planarization layer 302 are organic layers, and both can be formed by their respective primary patterning processes. Here, the primary patterning process may include: exposure processing and development processing.
[0081] In the actual process, as shown in Figure 5, the third orthographic projection of the opening of the first via 301a facing the substrate 100 is located within the first orthographic projection of the opening of the first via 301a facing away from the substrate 100, and the outer boundary of the third orthographic projection does not coincide with the outer boundary of the first orthographic projection. That is, in the direction perpendicular to the substrate 100, the opening size of the first via 301a gradually decreases along the direction closer to the substrate 100.
[0082] For example, when the first via 301a is a circular via, the diameter of the opening of the first via 301a facing the substrate 100 can be in the range of 3 micrometers to 4 micrometers, and the diameter of the opening of the first via 301a facing away from the substrate 100 can also be in the range of 3 micrometers to 4 micrometers, and the diameter of the opening of the first via 301a facing the substrate 100 is smaller than the diameter of the opening of the first via 301a facing away from the substrate 100.
[0083] Similarly, the second orthographic projection of the opening of the second via 302a facing the substrate 100 on the substrate 100 is located within the fourth orthographic projection of the opening of the second via 302a facing away from the substrate 100 on the substrate 100, and the outer boundary of the second orthographic projection does not coincide with the outer boundary of the fourth orthographic projection. That is, in the direction perpendicular to the substrate 100, the opening size of the second via 302a gradually decreases along the direction closer to the substrate 100.
[0084] When the second via 302a is a circular via, the diameter of the opening of the second via 302a facing the substrate 100 can be in the range of 3.5 micrometers to 5 micrometers, and the diameter of the opening of the second via 302a facing away from the substrate 100 can also be in the range of 3.5 micrometers to 5 micrometers. The diameter of the opening of the second via 302a facing the substrate 100 is smaller than the diameter of the opening of the second via 302a facing away from the substrate 100.
[0085] It should be noted that after the first sub-planarization layer 301 is formed, since the first sub-planarization layer 301 has multiple first vias 301a, organic material will also fill into the first vias 301a during the formation of the second sub-planarization layer 302. To ensure that no organic material remains in the first vias 301a, the first orthographic projection of the opening of the first via 301a on the side away from the substrate 100 on the substrate 100 can be located within the second orthographic projection of the opening of the second via 302a on the side facing the substrate 100 on the substrate 100, and the outer boundary of the first orthographic projection does not coincide with the outer boundary of the second orthographic projection. That is, the opening size of the first via 301a on the side away from the substrate 100 can be smaller than the opening size of the second via 302a on the side facing the substrate 100.
[0086] For example, as shown in FIG5, in the first direction X, the distance d1 between the opening edge of the first via 301a on the side facing away from the substrate 100 and the opening edge of the second via 302a on the side facing the substrate 100 ranges from 0.4 micrometers to 0.75 micrometers. Here, the opening edge of the first via 301a on the side facing away from the substrate 100 and the opening edge of the second via 302a on the side facing the substrate 100 are located on the same side of the first via 301a and the second via 302a. In this case, since the opening size of the first via 301a on the side away from the substrate 100 is smaller than the opening size of the second via 302a on the side facing the substrate 100, the organic material in the first via 301a can be overexposed during the formation of the second via 302a to ensure that no organic material remains in the first via 301a. The first via 301a can be connected to the corresponding second via 302a, thereby ensuring that the light-emitting device 500 can be effectively electrically connected to the corresponding transfer electrode Z through the corresponding first via 301a and second via 302a, thus improving the yield of the display panel 000.
[0087] In this embodiment, the thickness of both the first sub-planarization layer 301 and the second sub-planarization layer 302 in the direction perpendicular to the substrate 100 ranges from 1 micrometer to 1.5 micrometers. In this case, on the one hand, the flatness of the side of the first sub-planarization layer 301 facing away from the substrate 100 is higher than the flatness of the side of the first conductive layer 200 facing away from the substrate 100, and the flatness of the side of the second sub-planarization layer 302 facing away from the substrate 100 is higher than the flatness of the side of the first sub-planarization layer 301 facing away from the substrate 100. Therefore, the flatness of the side of the first planarization layer 300 facing away from the substrate 100 can be ensured to be better, thereby ensuring better flatness of the anode in the second type of light-emitting device 500b, effectively improving the front light emission efficiency of the second type of light-emitting device 500b, and improving the display effect of the display panel 000; on the other hand, the film thickness of the first planarization layer 300 can be kept as small as possible, thereby ensuring a smaller overall thickness of the display panel 000.
[0088] In this embodiment, please refer to FIG7, which is another enlarged view of the display panel shown in FIG1 at point C. Multiple conductive blocks 201 in the first conductive layer 200 correspond one-to-one with multiple first-type light-emitting devices 500a, and the orthographic projection of the first-type light-emitting device 500a on the substrate 100 lies within the orthographic projection of the corresponding conductive block 201 on the substrate 100. The first conductive layer 200 may further include: connecting traces 203, with both ends of the connecting traces 203 electrically connected to two adjacent conductive blocks 201 distributed in the second direction Y. In this case, for any column of first conductive blocks 201, adjacent conductive blocks 201 can be electrically connected through the connecting traces 203.
[0089] It should be noted that the display panel 000 may have a display area and a non-display area, with the non-display area distributed around the display area. Multiple light-emitting devices 500 may be located within the display area for display on the display panel 000, and multiple conductive blocks 201 corresponding to the multiple first-type light-emitting devices 500a are also located within the display area. The display panel 000 may further include: peripheral traces located in the non-display area. These peripheral traces may include: a first power signal line and a second power signal line, wherein the potential of the power signal loaded on the first power signal line is higher than the potential of the power signal loaded on the second power signal line. That is, the first power signal line may be a high-level power signal line, and the second power signal line may be a low-level power signal line. The first power signal line may be used to apply a high-level power signal to each pixel driving circuit P, and the second power signal line may be used to apply a low-level power signal to each pixel driving circuit P.
[0090] In this embodiment, any column of sequentially connected conductive blocks 201 can be electrically connected to the first power signal line. In this case, since the conductive block 201 has a large area and low resistance, it can ensure that the voltage drop between different positions in the display area of the display panel 000 is small, ensuring that the high-level power signal in the display area is relatively balanced, thereby improving the display effect of the display panel 000.
[0091] As shown in Figure 7, in the second direction Y, two connecting lines 203 are arranged between two adjacent conductive blocks 201, and the two connecting lines 203 are arranged opposite each other in the first direction X. The two adjacent conductive blocks 201 in the second direction Y, and the two connecting lines 203 between the two adjacent conductive blocks 201, form a first hollow area U1. At least one transition electrode Z is distributed within the first hollow area U1. For example, as shown in Figure 7, for any one first hollow area U1, two transition electrodes Z are distributed within the first hollow area U1. One transition electrode Z is used for electrical connection with an adjacent first-type light-emitting device 500a, and the other transition electrode Z is used for electrical connection with an adjacent second-type light-emitting device 500b.
[0092] It should be noted that the electrical connection between the light-emitting device 500 and the transfer electrode Z is achieved by connecting the first electrode 5011 corresponding to the light-emitting device 500 to the multiple transfer electrodes Z. For example, for any two transfer electrodes Z within any first hollow area U1, one transfer electrode Z is used to connect electrically to the first electrode 5011 corresponding to an adjacent first type of light-emitting device 500a, and the other transfer electrode Z is used to connect electrically to the first electrode 5011 corresponding to an adjacent second type of light-emitting device 500b.
[0093] In this way, on the one hand, the wiring space of the first conductive layer 200 can be saved, making it possible to lay out more wiring in the first conductive layer 200; on the other hand, it can prevent short circuits between the conductive block 201 and the transfer electrode Z, thereby improving the yield of the display panel 000.
[0094] Referring to Figure 7, the overall extension direction of the multiple conductive lines 202 in the first conductive layer 200 is parallel to the second direction Y. For example, the conductive line 202 can be a data signal line, and a row of pixel driving circuits P distributed within the display area can be electrically connected to the same data signal line. It should be noted that the display panel 000 may also include a bonding area located in the non-display area, which can be bonded to the driving chip. Connection signal traces are also distributed in the non-display area of the display panel 000. One end of the connection signal trace can be electrically connected to the conductive line 202 in the display area, and the other end can be electrically connected to the driving chip. In this way, the driving chip can provide a data signal to a corresponding conductive line 202 through the connection signal trace, so that the corresponding pixel driving circuit P can control the light-emitting device 500 to emit light according to this data signal, thereby driving the display panel 000 to display an image.
[0095] At least two conductive lines 202 are distributed between two adjacent columns of conductive blocks 201. In this case, the orthographic projection of the second type of light-emitting device 500b on the substrate 100 overlaps with the orthographic projection of the at least two conductive lines 202 distributed between two adjacent columns of conductive blocks 201 on the substrate 100.
[0096] At least two conductive lines 202 distributed between two adjacent columns of conductive blocks 201 may include: a first conductive line 2021 and a second conductive line 2022, the overall extension direction of the first conductive line 2021 and the second conductive line 2022 being parallel to the second direction Y. Here, both the first conductive line 2021 and the second conductive line 2022 can be data signal lines. For example, the first conductive line 2021 can be electrically connected to the pixel driving circuit P corresponding to each of the first type of light-emitting devices 500a in a column of first type light-emitting devices 500a, and the second conductive line 2022 can be electrically connected to the pixel driving circuit P corresponding to each of the second type of light-emitting devices 500b in a column of second type light-emitting devices 500b. The orthographic projection of the first conductive line 2021 on the substrate 100 and the orthographic projection of the second conductive line 2022 on the substrate 100 can both overlap with the orthographic projection of the second type of light-emitting device 500b on the substrate 100, which can save the wiring space of the first conductive layer 200 and provide the possibility of laying out more wiring in the first conductive layer 200.
[0097] Please refer to Figure 8, which is an enlarged schematic diagram of the two adjacent first and second conductive lines in Figure 7. The first conductive line 2021 may include multiple first segments 2021a and multiple second segments 2021b, which are alternately connected in the second direction Y. The orthographic projection of the first segment 2021a on the substrate 100 overlaps with the orthographic projection of the second type of light-emitting device 500b on the substrate 100. The second segments 2021b are distributed in the first direction X between two adjacent first type of light-emitting devices 500a. The second segment 2021b may include a first connecting segment b1, a second connecting segment b2, and a third connecting segment b3 connected sequentially. The second connecting segment b2 is distributed in the second direction Y between the first connecting segment b1 and the third connecting segment b3. The first connecting segment b1 and the third connecting segment b3 are also respectively connected to two first segments 2021a distributed on both sides of the second segment 2021b.
[0098] The second conductive line 2022 may include multiple third segments 2022a and multiple fourth segments 2022b, which are alternately connected in the second direction Y. The orthographic projection of the third segment 2022a on the substrate 100 overlaps with the orthographic projection of the second type of light-emitting device 500b on the substrate 100. The fourth segments 2022b are distributed between two adjacent first type of light-emitting devices 500a in the first direction X. The fourth segment 2022b may include a fourth connecting segment b4, a fifth connecting segment b5, and a sixth connecting segment b6 connected in sequence. The fifth connecting segment b5 is distributed between the fourth connecting segment b4 and the sixth connecting segment b6 in the second direction Y. The fourth connecting segment b4 and the sixth connecting segment b6 are also respectively connected to two third segments 2022a distributed on both sides of the fourth segment 2022b.
[0099] Specifically, for the second line segment 2021b and the fourth line segment 2022b distributed between two adjacent first-type light-emitting devices 500a in the first direction X, the distance between the second connecting segment b2 in the second line segment 2021b and the fifth connecting segment b5 in the fourth line segment 2022b in the first direction X is greater than the distance between the first line segment 2021a and the third line segment 2022a that are adjacently distributed in the first direction X. Therefore, for the second line segment 2021b and the fourth line segment 2022b distributed between two adjacent first-type light-emitting devices 500a in the first direction X, the second line segment 2021b and the fourth line segment 2022b can be used to form a second hollow area U2. The maximum distance of the second hollow area U2 in the first direction X, that is, the distance between the second connecting segment b2 in the second line segment 2021b and the fifth connecting segment b5 in the fourth line segment 2022b in the first direction X, is greater than the distance between the first line segment 2021a and the third line segment 2022a that are adjacently distributed in the first direction X.
[0100] By providing a second cutout area U2 in the first conductive layer 200, the reflection of ambient light by the metal layer can be reduced, thereby improving the transmittance of the display panel 000 to ambient light. The display panel 000 may also include multiple light sensors (not shown in the figure), which may correspond to multiple second cutout areas U2. The orthographic projection of the light sensor on the substrate 100 may be located within the orthographic projection of the second cutout area U2 on the substrate 100. In this case, the display panel 000 can identify the intensity of ambient light through the light sensors, and thus adjust the display brightness according to the light intensity of the environment in which the display panel 000 is located.
[0101] It should be noted that, in some possible implementations, as shown in Figure 7, for the second line segment 2021b and the fourth line segment 2022b distributed in the first direction X between two adjacent first-type light-emitting devices 500a, the orthographic projection of the second line segment 2021b on the substrate 100 can overlap with the orthographic projection of the first electrode 5011 corresponding to one first-type light-emitting device 500a on the substrate 100; the orthographic projection of the fourth line segment 2022b on the substrate 100 can overlap with the orthographic projection of the first electrode 5011 corresponding to another first-type light-emitting device 500a on the substrate 100. Specifically, the orthographic projection of the second connecting segment b2 in the second segment 2021b onto the substrate 100 can lie within the orthographic projection of the first electrode 5011 corresponding to the first type of light-emitting device 500a onto the substrate 100, and the orthographic projection of the fifth connecting segment b5 in the fourth segment 2022b onto the substrate 100 can lie within the orthographic projection of the first electrode 5011 corresponding to the first type of light-emitting device 500a onto the substrate 100. In this way, the area of the second cutout region U2 can be further increased, thereby further improving the transmittance of the display panel 000 to ambient light.
[0102] Please refer to Figure 9, which is another enlarged view of the display panel shown in Figure 1 at point C. The at least two conductive lines 202 distributed between two adjacent columns of conductive blocks 201 may further include a third conductive line 2023 and a fourth conductive line 2024. The third conductive line 2023 is distributed on the side of the first conductive line 2021 away from the second conductive line 2022, and the fourth conductive line 2024 is distributed on the side of the second conductive line 2022 away from the first conductive line 2021.
[0103] The third conductive line 2023 may include a plurality of separately arranged fifth segments 2023a, the extension directions of which are all parallel to the second direction Y. The plurality of fifth segments 2023a are arranged sequentially along the second direction Y, and the plurality of fifth segments 2023a are electrically connected to a plurality of conductive blocks 201 in the nearest row of conductive blocks 201.
[0104] The fourth conductive line 2024 may include a plurality of separately arranged sixth segments 2024a, the extension directions of which are all parallel to the second direction Y. The plurality of sixth segments 2024a are arranged sequentially along the second direction Y, and the plurality of sixth segments 2024a are electrically connected to a plurality of conductive blocks 201 in the nearest row of conductive blocks 201.
[0105] This further reduces the resistance of the conductive block 201, thereby ensuring a smaller voltage drop between different positions within the display area of the display panel 000, ensuring a more balanced high-level power signal within the display area, and improving the display effect of the display panel 000.
[0106] As shown in Figure 9, the orthographic projection of the fifth line segment 2023a on the substrate 100 can overlap with the orthographic projection of the second type of light-emitting device 500b on the substrate 100, and the orthographic projection of the sixth line segment 2024a on the substrate 100 can overlap with the orthographic projection of the second type of light-emitting device 500b on the substrate 100.
[0107] It should be noted that the widths of the multiple conductive lines 202 in the first direction X can be equal, and the distance between the fifth line segment 2023a and the first line segment 2021a of the first conductive line 2021 can be equal to the distance between the first line segment 2021a and the third line segment 2022a, and the distance between the sixth line segment 2024a and the third line segment 2022a can be equal to the distance between the first line segment 2021a and the third line segment 2022a.
[0108] In this case, please refer to Figure 6. The fifth line segment 2023a and the sixth line segment 2024a can raise the areas on both sides of the first line segment 2021a and the third line segment 2022a to ensure that the height difference between the first sub-planarization layer 301 and the side facing away from the substrate 100 at the corresponding positions is not too large. This ensures that even if the second sub-planarization layer 302 is thin, the flatness of the side facing away from the substrate 100 of the second sub-planarization layer 302 can be good. This improves the flatness of the anode of the second type of light-emitting device 500b and the front light emission efficiency of the second type of light-emitting device 500b, while saving costs and ensuring that the overall thickness of the display panel 000 is not too large.
[0109] Please refer to Figure 10, which is another cross-sectional view of the display panel provided in this embodiment of the application at point AA' in Figure 2. The display panel 000 may further include: a second planarization layer 700, which is located between the first planarization layer 300 and the pixel definition layer 400. The second planarization layer 700 has a plurality of second pixel openings K2, which are correspondingly connected to a plurality of first pixel openings K1. The orthographic projection of the first pixel openings K1 on the substrate 100 is located within the orthographic projection of the second pixel openings K2 on the substrate 100.
[0110] At least a portion of the light-emitting device 500 is also located within the second pixel opening K2. As shown in FIG10, the first electrode 5011 corresponding to the light-emitting device 500 can correspond to the second pixel opening K2. A portion of the first electrode 5011 can be located on the side of the second planarization layer 700 away from the substrate 100, and another portion of the first electrode 5011 is located within the corresponding second pixel opening K2 and covers the sidewall of the corresponding second pixel opening K2. For example, please refer to FIG11, which is an enlarged schematic diagram of a portion of the film layer in FIG10. The first electrode 5011 may include: a first portion 5011a located on the side of the second planarization layer 700 away from the substrate 100, a second portion 5011b covering the sidewall of the corresponding second pixel opening K2, and a third portion 5011c. The third portion 5011c is located within the corresponding second pixel opening K2 and is in contact with the side of the first planarization layer 300 away from the substrate 100.
[0111] Among them, the first part 5011a of the first electrode 5011 is electrically connected to the plurality of transition electrodes Z; the part of the third part 5011c of the first electrode 5011 located in the corresponding first pixel opening K1 and in contact with the light-emitting layer 502 is the anode in the corresponding light-emitting device 500.
[0112] The second planarization layer 700 may have multiple third vias 700a, each corresponding to a first portion 5011a of a plurality of first electrodes 5011, and the multiple third vias 700a and multiple second vias 302a are correspondingly connected. The first portion 5011a of the first electrode 5011 is electrically connected to the corresponding transition electrode Z through the corresponding third via 700a, second via 302a, and first via 301a. Since the first portion 5011a, second portion 5011b, and third portion 5011c of the first electrode 5011 are electrically connected in sequence, the light-emitting device 500 can be electrically connected to the corresponding transition electrode Z through the corresponding first electrode 5011, thereby realizing the electrical connection between the light-emitting device 500 and the corresponding pixel driving circuit P. The pixel driving circuit P is used to drive the corresponding light-emitting device 500 to emit light.
[0113] It should be noted that the third via 700a can have various shapes. For example, the third via 700a can be a circular via. In the embodiments of this application, when the third via 700a is a circular via, the diameter of the third via 700a can range from 4 micrometers to 6.5 micrometers.
[0114] In the actual manufacturing process, the fifth orthographic projection of the opening of the third via 700a facing the substrate 100 on the substrate 100 lies within the sixth orthographic projection of the opening of the third via 700a facing away from the substrate 100 on the substrate 100, and the outer boundary of the fifth orthographic projection does not coincide with the outer boundary of the sixth orth orthographic projection. That is, in the direction perpendicular to the substrate 100, the opening size of the third via 700a gradually decreases along the direction closer to the substrate 100. For example, when the third via 700a is a circular via, the diameter of the opening of the third via 700a facing the substrate 100 can range from 4 micrometers to 6.5 micrometers, and the diameter of the opening of the third via 700a facing away from the substrate 100 can also range from 4 micrometers to 6.5 micrometers, and the diameter of the opening of the third via 700a facing the substrate 100 is smaller than the diameter of the opening of the third via 700a facing away from the substrate 100.
[0115] It should also be noted that after the second sub-planarization layer 302 is formed, since the second sub-planarization layer 302 has multiple second vias 302a, organic material will also fill into the second vias 302a during the formation of the second planarization layer 700. To ensure that no organic material remains in the second vias 302a, the fourth orthographic projection of the opening of the second via 302a on the side away from the substrate 100 on the substrate 100 can be located within the fifth orthographic projection of the opening of the third via 700a on the side facing the substrate 100 on the substrate 100, and the outer boundary of the fourth orthographic projection does not coincide with the outer boundary of the fifth orthographic projection. That is, the opening size of the second via 302a on the side away from the substrate 100 can be smaller than the opening size of the third via 700a on the side facing the substrate 100.
[0116] For example, as shown in FIG11, in the first direction X, the distance d2 between the opening edge of the second via 302a on the side away from the substrate 100 and the opening edge of the third via 700a on the side facing the substrate 100 ranges from 0.4 micrometers to 0.75 micrometers. Here, the opening edge of the second via 302a on the side away from the substrate 100 and the opening edge of the third via 700a on the side facing the substrate 100 are located on the same side of the second via 302a and the third via 700a. In this case, since the opening size of the second via 302a on the side away from the substrate 100 is smaller than the opening size of the third via 700a on the side facing the substrate 100, the organic material in the second via 302a can be overexposed during the formation of the third via 700a to ensure that no organic material remains in the second via 302a. The second via 302a can be connected to the corresponding third via 700a, thereby ensuring that the light-emitting device 500 can be effectively electrically connected to the corresponding transfer electrode Z through the corresponding third via 700a, the second via 302a and the first via 301a, thereby improving the yield of the display panel 000.
[0117] The second portion 5011b of the first electrode 5011 covers the sidewall of the corresponding second pixel opening K2. The angle between the sidewall of the second pixel opening K2 and the side of the second pixel opening K2 facing the substrate 100 can be an obtuse angle. In this case, the angle between the second portion 5011b of the first electrode 5011 and the third portion 5011c of the first electrode 5011 can also be an obtuse angle. Since the first electrode 5011 can be a reflective material, the anode of the light-emitting device 500 will reflect some light onto the sidewall of the first pixel opening K1. To improve light utilization, the pixel definition layer 400 can be a light-transmitting material. In this case, the second portion 5011b of the first electrode 5011 can reflect this portion of light again, allowing it to exit through the first pixel opening K1, thereby improving light utilization, increasing the display brightness of the display panel 000, and reducing the power consumption of the display panel 000.
[0118] It should be noted that the thickness of the second planarization layer 700 in the direction perpendicular to the substrate 100 can range from 2 micrometers to 3 micrometers. In this case, the area of the second portion 5011b of the first electrode 5011 can be larger, resulting in better light utilization.
[0119] Please refer to Figure 12, which is another cross-sectional view of the display panel provided in this embodiment of the application at point AA' in Figure 2. The pixel driving circuit P in the display panel 000, which is electrically connected to the light-emitting device 500, may include at least two transistors and at least one storage capacitor.
[0120] The storage capacitor may include a first capacitor electrode C1 and a second capacitor electrode C2 disposed opposite to each other. The transistor may include an active layer Act, a gate G, a source S, and a drain D. The active layer Act may be insulated from the gate G, and both the source S and the drain D may be connected to the active layer Act. The source S may be electrically connected to a data line, and the drain D may be electrically connected to the anode of the light-emitting device 500 via a transition electrode Z. Here, the transition electrode Z may be a single-layer structure or a double-layer structure. For example, if the transition electrode Z is a double-layer structure, the transition electrode may include a first sub-transition electrode and a second sub-transition electrode stacked together. This application does not impose any limitations on this.
[0121] In this embodiment of the application, the display panel 000 may further include: a buffer layer 800, an active layer pattern, a first gate insulating layer 900, a second conductive layer, a second gate insulating layer 1000, a third conductive layer, an interlayer boundary layer 1100, a fourth conductive layer, and a passivation layer 1200 located on one side of the substrate 100.
[0122] Here, the active layer pattern may include: the active layer Act in a transistor.
[0123] The second conductive layer may include: the gate G in the transistor and the first capacitor electrode C1 in the storage capacitor.
[0124] The third conductive layer may include: the second capacitor electrode C2 in the storage capacitor.
[0125] The fourth conductive layer may include the source (S) and drain (D) of the transistor.
[0126] In summary, in the embodiments of this application, the orthographic projection of the second type of light-emitting device on the substrate can overlap with the orthographic projections of multiple conductive lines in the second conductive layer on the substrate. For example, the orthographic projection of the second type of light-emitting device on the substrate can overlap with the orthographic projections of the first segment of the first conductive line, the third segment of the second conductive line, the fifth segment of the third conductive line, and the sixth segment of the fourth conductive line on the substrate. Since the first planarization layer includes at least a first sub-planarization layer and a second sub-planarization layer stacked together, the first sub-planarization layer is closer to the substrate than the second sub-planarization layer, and the flatness of the second sub-planarization layer on the side facing away from the substrate is higher than that of the first sub-planarization layer on the side facing away from the substrate. In this case, the flatness of the side of the first planarization layer facing away from the substrate is better, thereby ensuring that the flatness of the first electrode layer formed on the side of the first planarization layer facing away from the substrate is better, effectively improving the flatness of the anode of the second type of light-emitting device, increasing the front light emission efficiency of the second type of light-emitting device, and improving the display effect of the display panel.
[0127] This application also provides a display device, which includes: a power supply component and a display panel 000 electrically connected to the power supply component. The display panel 000 may include any of the display panels 000 given above. The display device may be any product or component with display function, such as a mobile phone, tablet computer, television, advertising machine, display screen, digital photo frame, etc.
[0128] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.
[0129] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.
[0130] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A display panel, characterized by, include: Substrate, pixel driving circuit, first conductive layer, first planarization layer, pixel definition layer, and light-emitting device; The number of pixel driving circuits is multiple, and all of the multiple pixel driving circuits are located on the same side of the substrate; The first conductive layer is located on the side of the pixel driving circuit away from the substrate, and the first conductive layer includes: a plurality of transition electrodes electrically connected to the plurality of pixel driving circuits; The first planarization layer is located on the side of the first conductive layer away from the substrate. The first planarization layer includes at least: a first sub-planarization layer and a second sub-planarization layer stacked together. The first sub-planarization layer is closer to the substrate than the second sub-planarization layer, and the flatness of the second sub-planarization layer on the side away from the substrate is higher than the flatness of the first sub-planarization layer on the side away from the substrate. The pixel definition layer is located on the side of the first planarization layer opposite to the substrate, and the pixel definition layer has a plurality of first pixel openings; The number of light-emitting devices is multiple, and the multiple light-emitting devices correspond to the multiple first pixel openings and the multiple transition electrodes; at least a portion of the light-emitting devices are located in the corresponding first pixel openings and are electrically connected to the corresponding transition electrodes. Wherein, the orthographic projection of the light-emitting device on the substrate overlaps with the orthographic projection of the first conductive layer on the substrate.
2. The display panel of claim 1, wherein, The first sub-planarization layer has a plurality of first vias, and the second sub-planarization layer has a plurality of second vias, wherein the plurality of first vias and the plurality of second vias are connected to each other. The plurality of first vias correspond to the plurality of transition electrodes, and the plurality of second vias correspond to the plurality of light-emitting devices. The light-emitting devices are electrically connected to the corresponding transition electrodes through the corresponding second vias and the first vias.
3. The display panel of claim 2, wherein, The first orthographic projection of the opening on the side of the first via facing away from the substrate is located within the second orthographic projection of the opening on the side of the second via facing the substrate; and the outer boundary of the first orthographic projection does not coincide with the outer boundary of the second orthographic projection.
4. The display panel of claim 1, wherein, The thickness of both the first sub-planarization layer and the second sub-planarization layer in the direction perpendicular to the substrate ranges from 1 micrometer to 1.5 micrometers.
5. The display panel of any of claims 1 to 4, wherein, The plurality of light-emitting devices includes: a plurality of first-type light-emitting devices and a plurality of second-type light-emitting devices; The plurality of first-type light-emitting devices and the plurality of second-type light-emitting devices are arranged in multiple columns along the first direction and in multiple rows along the second direction; The first conductive layer further includes: multiple conductive blocks and multiple conductive lines; the overall extension direction of the conductive lines is parallel to the second direction; The plurality of conductive blocks correspond to a plurality of the first type of light-emitting devices, and the orthographic projection of the first type of light-emitting device on the substrate is located within the orthographic projection of the corresponding conductive block on the substrate; the orthographic projection of the second type of light-emitting device on the substrate overlaps with the orthographic projection of at least one conductive line on the substrate.
6. The display panel of claim 5, wherein, The first conductive layer further includes: a connecting trace, the two ends of which are electrically connected to two adjacent conductive blocks distributed in the second direction.
7. The display panel of claim 6, wherein, In the second direction, two connecting lines are arranged between two adjacent conductive blocks, and the two connecting lines are arranged opposite to each other in the first direction. Wherein, two adjacent conductive blocks in the second direction, and two connecting lines located between the two adjacent conductive blocks, are used to form a first hollow area, and at least one of the transition electrodes are distributed in the first hollow area.
8. The display panel of claim 5, wherein, At least two conductive lines are distributed between two adjacent columns of the conductive blocks; The orthographic projection of the second type of light-emitting device on the substrate overlaps with the orthographic projection of at least two conductive lines distributed between two adjacent columns of conductive blocks on the substrate.
9. The display panel of claim 8, wherein, The at least two conductive lines distributed between two adjacent columns of conductive blocks include: a first conductive line and a second conductive line; the overall extension direction of the first conductive line and the second conductive line is parallel to the second direction; The first conductive line includes: a plurality of first segments and a plurality of second segments; the plurality of first segments and the plurality of second segments are alternately connected in the second direction; the orthographic projection of the first segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate, and the second segments are distributed in the first direction between two adjacent first type of light-emitting devices; The second conductive line includes: a plurality of third segments and a plurality of fourth segments; the plurality of third segments and the plurality of fourth segments are alternately connected in the second direction; the orthographic projection of the third segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate, and the fourth segments are distributed in the first direction between two adjacent first type of light-emitting devices.
10. The display panel of claim 9, wherein, For the second line segment and the fourth line segment distributed between two adjacent first-type light-emitting devices in the first direction, the second line segment and the fourth line segment are used to form a second hollow area; Wherein, the maximum distance of the second hollow area in the first direction is greater than the distance between the first line segment and the third line segment that are adjacent to each other in the first direction.
11. The display panel of claim 10, wherein, The display panel further includes: a plurality of separately disposed first electrodes; the plurality of first electrodes being electrically connected to the plurality of corresponding transition electrodes; the plurality of first electrodes corresponding to the plurality of light-emitting devices, wherein the anode of the light-emitting device is a portion of the corresponding first electrode; Wherein, the orthographic projection of the first electrode corresponding to the second type of light-emitting device on the substrate overlaps with the orthographic projections of the first line segment and the third line segment that are adjacent to each other in the first direction on the substrate; For the second line segment and the fourth line segment distributed in the first direction between two adjacent first-type light-emitting devices, the orthographic projection of the second line segment on the substrate overlaps with the orthographic projection of the first electrode corresponding to one of the first-type light-emitting devices on the substrate, and the orthographic projection of the fourth line segment on the substrate overlaps with the orthographic projection of the first electrode corresponding to another of the first-type light-emitting devices on the substrate.
12. The display panel of claim 9, wherein, The at least two conductive lines distributed between two adjacent columns of conductive blocks include a third conductive line and a fourth conductive line; the third conductive line is distributed on the side of the first conductive line away from the second conductive line, and the fourth conductive line is distributed on the side of the second conductive line away from the first conductive line. The third conductive line includes: a plurality of separately arranged fifth segments, the extension directions of which are all parallel to the second direction, the plurality of fifth segments being arranged sequentially along the second direction, and the plurality of fifth segments being electrically connected to a plurality of conductive blocks in a column of conductive blocks; the orthographic projection of the fifth segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate; The fourth conductive line includes: a plurality of separately arranged sixth segments, the extension directions of which are all parallel to the second direction, the plurality of sixth segments are arranged sequentially along the second direction, and the plurality of sixth segments are electrically connected to a plurality of conductive blocks in a column of conductive blocks; the orthographic projection of the sixth segment on the substrate overlaps with the orthographic projection of the second type of light-emitting device on the substrate.
13. The display panel of any of claims 1-4, 6-12, wherein, The display panel further includes: a second planarization layer, the second planarization layer being located between the first planarization layer and the pixel definition layer, the second planarization layer having a plurality of second pixel openings, the plurality of second pixel openings being correspondingly connected to a plurality of first pixel openings; At least a portion of the light-emitting device is located within the second pixel opening.
14. The display panel of claim 13, wherein, The display panel further includes: a plurality of separately disposed first electrodes; the plurality of first electrodes being electrically connected to the plurality of corresponding transition electrodes; the plurality of first electrodes corresponding to the plurality of light-emitting devices, wherein the anode of the light-emitting device is a portion of the corresponding first electrode; The second pixel opening corresponds to the plurality of first electrodes. A portion of the first electrodes is located on the side of the second planarization layer away from the substrate, and another portion of the first electrodes is located within the corresponding second pixel opening and covers the sidewall of the corresponding second pixel opening.
15. A display device comprising: include: A power supply component, and a display panel connected to the power supply component, wherein the display panel is the display panel according to any one of claims 1 to 14.