Display panel and display device

Abstract

This application discloses a display panel and display device, belonging to the field of display technology. The display panel provided by this application may include: a substrate, a first planarization layer, a first electrode layer, a light-emitting layer, a second electrode layer, and isolation pillars. Since the portion of the first planarization layer located in the transition region has an isolation groove, and the portion of the first electrode layer located in the transition region has a first through-groove, the orthographic projection of the first through-groove on the substrate lies within the orthographic projection of the isolation groove on the substrate, and the boundary of the orthographic projection of the first through-groove on the substrate does not coincide with the boundary of the orthographic projection of the isolation groove on the substrate, the portion of the second electrode layer located within the isolation groove can be disconnected from the portion located outside the isolation groove. Thus, the isolation effect of the isolation groove on the second electrode layer is better, and it can more likely ensure that the portion of the second electrode layer located in the transition region is not charged, thereby avoiding film corrosion and improving the reliability of the display panel.

Description

Technical Field

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

[0002] In pursuit of a full-screen design, display panels can incorporate perforations within the display area to house sensors such as cameras, thereby reducing screen bezels and increasing the screen-to-body ratio. This type of display panel features a perforation area, a transition area, and a display area, with the display area surrounding the perforation area and the transition area located between them.

[0003] A display panel comprises multiple light-emitting devices, including an anode, a light-emitting layer, and a cathode. To simplify the manufacturing process, these devices share a common cathode, meaning the cathode layer covers the light-emitting layers of all the devices. The cathode layer also includes a portion located in a transition region. When the cathode layer is negatively charged, moisture from the external environment can easily undergo electrolysis near the charged cathode layer in the aperture area, affecting the encapsulation effect and leading to lower display panel reliability. Therefore, display panels typically incorporate isolation pillars in the transition region. These pillars have grooves on their sides to isolate the portion of the cathode layer distributed in the transition region, preventing the cathode layer near the aperture area from becoming charged and thus preventing electrolysis by moisture in the vicinity of the aperture area, thereby improving the reliability of the display panel.

[0004] However, during the manufacturing process of the display panel, metal material can easily remain in the grooves of the isolation pillars. This metal material can reconnect the cathode layer that was disconnected by the isolation pillars, thus causing the isolation pillars to fail to isolate the cathode layer, resulting in low reliability of the display panel. Summary of the Invention

[0005] This application provides a display panel and a display device. It can solve the problem of low reliability in existing display panels. The technical solution is as follows:

[0006] On one hand, a display panel is provided, characterized in that the display panel has: a display area, a transition area, and an aperture area, the display area being located around the aperture area, and the transition area being located between the display area and the aperture area; the display panel includes: a substrate, a first planarization layer, a first electrode layer, a light-emitting layer, a second electrode layer, and isolation pillars;

[0007] The first planarization layer is located on one side of the substrate, and the portion of the first planarization layer located in the transition region has a partition groove, the partition groove being distributed around the opening region;

[0008] The first electrode layer is located on the side of the first planarization layer opposite to the substrate. The portion of the first electrode layer located in the display area includes: a plurality of separately disposed first electrode blocks. The portion of the first electrode layer located in the transition area has a first through groove. The first through groove is distributed around the opening area. The orthographic projection of the first through groove on the substrate is located within the orthographic projection of the partition groove on the substrate. The boundary of the orthographic projection of the first through groove on the substrate does not coincide with the boundary of the orthographic projection of the partition groove on the substrate.

[0009] The light-emitting layer is located on the side of the first electrode layer away from the substrate, and the portion of the light-emitting layer located inside the partition groove is disconnected from the portion of the light-emitting layer located outside the partition groove;

[0010] The second electrode layer is located on the side of the light-emitting layer away from the substrate, and the portion of the second electrode layer located inside the partition groove is disconnected from the portion of the second electrode layer located outside the partition groove;

[0011] The isolation columns are located within the area enclosed by the partition groove and are distributed around the opening area.

[0012] Optionally, the portion of the first electrode layer located in the transition region includes: a first partition portion and a second partition portion distributed around the opening region; the first through groove is located between the first partition portion and the second partition portion, and the first partition portion is closer to the opening region than the second partition portion;

[0013] The first partition portion protrudes from the side of the partition groove closest to the opening area on the side facing the first through groove, and the second partition portion protrudes from the side of the partition groove away from the opening area on the side facing the first through groove.

[0014] Optionally, the portion of the first electrode layer located in the transition region includes: a detection electrode portion, the detection electrode portion being distributed around the opening region, and the detection electrode portion being closer to the opening region relative to the partition groove; and the light-emitting layer having a portion in contact with the detection electrode portion;

[0015] The display panel further includes a signal connection line, which is electrically connected to the detection electrode portion and is used to apply a positive potential signal to the detection electrode portion.

[0016] Optionally, the portion of the first electrode layer located in the transition region further includes: a first partition portion and a second partition portion distributed around the opening region; the first through groove is located between the first partition portion and the second partition portion, and the first partition portion is closer to the opening region than the second partition portion;

[0017] In this configuration, the first partition portion and the detection electrode portion are the same conductive structure; or, the detection electrode portion is disposed separately from the first partition portion, and the detection electrode portion is closer to the opening area relative to the first partition portion.

[0018] Optionally, the display panel further includes: a plurality of pixel driving circuits, all of which are located on the side of the first planarization layer facing the substrate, and the plurality of pixel driving circuits are electrically connected to a plurality of the first electrode blocks; the plurality of pixel driving circuits are arranged in multiple columns along a first direction and in multiple rows along a second direction;

[0019] The signal connection line is electrically connected to at least a portion of the pixel driving circuit.

[0020] Optionally, the display panel further includes: a first power signal line, which is electrically connected to each of the pixel driving circuits;

[0021] The signal connection line includes at least a portion of the first power signal line.

[0022] Optionally, the display panel further includes: multiple data signal lines, the overall extension direction of which is parallel to the second direction; the multiple data signal lines correspond to multiple columns of the pixel driving circuits, and one data signal line is electrically connected to a corresponding column of the pixel driving circuits;

[0023] The signal connection line includes a target data line, which is the data signal line that is electrically connected to the detection electrode section among the plurality of data signal lines.

[0024] Optionally, the display panel further includes: multiple initial signal lines, the overall extension direction of the initial signal lines being parallel to the first direction; the multiple initial signal lines corresponding to multiple rows of the pixel driving circuits, and one initial signal line being electrically connected to a corresponding row of the pixel driving circuits;

[0025] The signal connection line includes a target initial line, which is the initial signal line that is electrically connected to the detection electrode among the plurality of initial signal lines.

[0026] Optionally, the display panel further includes a pixel definition layer, the pixel definition layer being located on the side of the first electrode layer facing away from the substrate;

[0027] The portion of the pixel definition layer located within the display area has multiple pixel openings, each pixel opening corresponding to a plurality of first electrode blocks, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the first electrode blocks on the substrate.

[0028] The portion of the pixel definition layer located within the transition region has a second through groove. The second through groove is distributed around the opening region, and the orthographic projection of the second through groove on the substrate overlaps with the orthographic projection of the detection electrode portion on the substrate.

[0029] The light-emitting layer is located on the side of the pixel definition layer away from the substrate. The portion of the light-emitting layer distributed within the pixel opening contacts the first electrode block, and the portion of the light-emitting layer distributed within the second through groove contacts the detection electrode portion.

[0030] 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.

[0031] The beneficial effects of the technical solutions provided in this application include at least the following:

[0032] Because the portion of the first planarization layer located in the transition region has an isolation groove, and the portion of the first electrode layer located in the transition region has a first through groove, the orthographic projection of the first through groove on the substrate lies within the orthographic projection of the isolation groove on the substrate, and the boundary of the orthographic projection of the first through groove on the substrate does not coincide with the boundary of the orthographic projection of the isolation groove on the substrate. Therefore, the portion of the second electrode layer located within the isolation groove can be disconnected from the portion located outside the isolation groove. In this way, the isolation groove has a better isolation effect on the second electrode layer, which can more likely ensure that the third and first portions of the second electrode layer are not charged, thereby preventing moisture from the external environment from entering the transition region from the opening area and causing an electrolytic reaction, thus preventing the film layer from being corroded and improving the reliability of the display panel. Attached Figure Description

[0033] 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.

[0034] Figure 1 This is a top view of a display panel provided in an embodiment of this application;

[0035] Figure 2 yes Figure 1 A schematic diagram of a cross-section at point AA';

[0036] Figure 3 yes Figure 1 A schematic diagram of a cross-section at point BB';

[0037] Figure 4 This is a top view of the display panel provided in the embodiment of this application at the transition area;

[0038] Figure 5 yes Figure 4 A schematic diagram of a cross-section at point CC';

[0039] Figure 6 This is a schematic diagram of a partial film layer structure of a display panel provided in an embodiment of this application;

[0040] Figure 7 This is a schematic diagram of a partial film layer structure of another display panel provided in an embodiment of this application;

[0041] Figure 8 This is a schematic diagram of a partial film layer structure of another display panel provided in an embodiment of this application;

[0042] Figure 9 This is a top view of another display panel provided in an embodiment of this application;

[0043] Figure 10 This is a top view of yet another display panel provided in the embodiments of this application;

[0044] Figure 11 yes Figure 10 An enlarged schematic diagram of point R in the middle;

[0045] Figure 12 yes Figure 10 Another enlarged schematic diagram of point R in the middle;

[0046] Figure 13 yes Figure 10 Another enlarged schematic diagram of point R in the middle. Detailed Implementation

[0047] 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.

[0048] Please refer to Figure 1 , Figure 1 This is a top view of a display panel provided in an embodiment of this application. The display panel 000 may have a display area 001 and a non-display area 002, with the non-display area 002 located around the display area 001. To meet product requirements, an opening area 003 may be provided in the display panel 000 for placing functional components with other functions, such as a camera. In this case, the display panel 000 may also have a transition area 004. The display area 001 is located around the opening area 003, and the transition area 004 is located between the display area 001 and the opening area 003.

[0049] Please refer to Figure 2 and Figure 3 , Figure 2 yes Figure 1 A schematic diagram of a cross-section at point AA'. Figure 3 yes Figure 1 A cross-sectional schematic diagram at BB'. The display panel 000 may include: a substrate 100, and a light-emitting device 200 and an isolation pillar 300 located on one side of the substrate 100.

[0050] The display panel 000 can contain multiple light-emitting devices 200, all of which can be distributed within the display area 001. For example, the display panel 000 may include a first electrode layer 201, a light-emitting layer 202, and a second electrode layer 203 stacked together, all of which are distributed at least within the display area 001. Here, the first electrode layer 201, the light-emitting layer 202, and the second electrode layer 203 can be used to form multiple light-emitting devices 200.

[0051] For example, the display panel 000 may further include a pixel definition layer 400. This pixel definition layer 400 may be distributed within the display area 001, and may have multiple pixel openings K. A first electrode layer 201 may be located on the side of the pixel definition layer 400 facing the substrate 100, while the light-emitting layer 202 and the second electrode layer 203 may both be located on the side of the pixel definition layer 400 away from the substrate 100. The first electrode layer 201 may include multiple first electrode blocks 2011 corresponding one-to-one with the multiple pixel openings K, and the orthographic projection of each pixel opening K onto the substrate 100 may lie within the orthographic projection of the corresponding first electrode block 2011 onto the substrate 100. Therefore, the portion of the light-emitting layer 202 distributed within each pixel opening K may contact the corresponding first electrode block 2011. In this case, for any pixel opening K, the first electrode block 2011 (usually also called the anode) corresponding to the pixel opening K, and the portion of the light-emitting layer 202 and the second electrode layer 203 distributed within the pixel opening K (usually also called the cathode) can form a light-emitting device 200.

[0052] To simplify the fabrication process of the display panel 000, multiple light-emitting devices 200 can share a common cathode. Therefore, when the display panel 000 is displayed, any region of the second electrode layer 203 located in the display area 001 is negatively charged. Furthermore, the second electrode layer 203 may also include a portion located within the transition region 004. Since the portion of the second electrode layer 203 located in the transition region 004 is electrically connected to the portion of the second electrode layer 203 located in the display area 001, the portion of the second electrode layer 203 located in the transition region 004 is also negatively charged when the display panel 000 is displayed.

[0053] The isolation pillars 300 in the display panel 000 are located within the transition region 004 and are distributed around the opening region 003. The isolation pillars 300 can be used to isolate the portion of the second electrode layer 203 located within the transition region 004, so that the portion of the second electrode layer 203 located on the side of the isolation pillar 300 facing away from the substrate 100 is disconnected from the other portions of the second electrode layer 203, thereby ensuring that the portion of the second electrode layer 203 located on the side of the isolation pillar 300 facing the opening region 003 is no longer charged.

[0054] For example, the isolation post 300 has a groove U on at least one side of the side facing the display area 001 and the side facing the opening area 003. That is, in one possible case, the isolation post 300 has a groove U only on the side facing the display area 001; in another possible case, the isolation post 300 has a groove U only on the side facing the opening area 003; in yet another possible case, the isolation post 300 has grooves U on both the side facing the display area 001 and the side facing the opening area 003. For ease of explanation, this embodiment will be further described using the example of the isolation post 300 having grooves U on both the side facing the display area 001 and the side facing the opening area 003.

[0055] like Figure 2 As shown, the isolation pillar 300 may include a first structure 301, a second structure 302, and a third structure 303 stacked together. The first structure 301 is closer to the substrate 100 than the third structure 303. The orthographic projection of the second structure 302 onto the substrate 100 lies within the orthographic projection of the third structure 303 onto the substrate 100, and the boundary of the orthographic projection of the second structure 302 onto the substrate 100 does not coincide with the boundary of the orthographic projection of the third structure 303 onto the substrate 100. The orthographic projection of the third structure 303 onto the substrate 100 overlaps with the orthographic projection of the first structure 301 onto the substrate 100. In this case, the portion of the second electrode layer 203 located on the side of the isolation pillar 300 facing away from the substrate 100 is disconnected from the other portions of the second electrode layer 203, thereby de-energizing the portion of the second electrode layer 203 located on the side of the isolation pillar 300 facing the opening region 003.

[0056] However, during the fabrication of the display panel 000, silver impurities can easily precipitate at the groove U. Since these silver impurities are conductive, they can reconnect the disconnected second electrode layer 203 of the isolation pillar 300, causing the isolation pillar 300 to fail in its isolation of the second electrode layer 203. In this situation, the portion of the second electrode layer 203 located on the side of the isolation pillar 300 facing the opening region 003 will still be negatively charged. Because water and oxygen from the external environment can easily penetrate from the opening region 003 into the transition region 004, when the portion of the second electrode layer 203 near the opening region 003 is negatively charged, the water and oxygen penetrating into the transition region 004 will undergo an electrolysis reaction under the action of the negatively charged second electrode layer 203, generating hydrogen ions and hydroxide ions. Furthermore, since the light-emitting side of the display panel 000 is usually equipped with a polarizer to reduce the reflectivity of ambient light, and the polarizer is usually made of metal, the positively charged metal ions (e.g., potassium ions) in the polarizer are easily attracted by the negatively charged second electrode layer 203, causing the positively charged metal ions to accumulate near the isolation pillar 300. Metal ions readily combine with hydroxide ions, resulting in the portion of other film layers of the display panel 000 (e.g., the encapsulation layer 800 on the side of the second electrode layer 203 facing away from the substrate 100) located in the transition region 004 being in a strongly alkaline environment formed by the combination of metal ions and hydroxide ions. This makes the film layers susceptible to corrosion, leading to defects such as holes or swelling, and consequently, lower reliability of the display panel 000.

[0057] To address this, this application provides a display panel 000 that, based on the isolation pillars 300, incorporates an isolation groove structure to further de-energize the second electrode layer 203. This significantly increases the probability that the portion of the second electrode layer 203 distributed within the transition region 004 will remain uncharged, preventing moisture from the external environment from entering the transition region 004 through the opening region 003 and causing an electrolytic reaction, thereby preventing film corrosion and improving the reliability of the display panel 000. Furthermore, the display panel 000 provided in this application incorporates a power-off detection design to detect the isolation effect of the isolation groove on the second electrode layer 203. This allows for the screening out of display panels 000 with failed isolation during production, improving product yield.

[0058] Please refer to Figure 4 and Figure 5 , Figure 4 This is a top view of the display panel provided in the embodiment of this application at the transition area. Figure 5 yes Figure 4 A cross-sectional schematic diagram at CC'. The display panel 000 may include: a substrate 100, a first planarization layer 500, a first electrode layer 201, a light-emitting layer 202, a second electrode layer 203, and an isolation pillar 300.

[0059] The first planarization layer 500 in the display panel 000 is located on one side of the substrate 100, and the portion of the first planarization layer 500 located in the transition region 004 has a partition groove 500a, which is distributed around the opening region 003.

[0060] The first electrode layer 201 in the display panel 000 is located on the side of the first planarization layer 500 facing away from the substrate 100. The portion of the first electrode layer 201 located in the display area 001 includes: a plurality of separately disposed first electrode blocks 2011; the portion of the first electrode layer 201 located in the transition area 004 has a first through groove V1. The first through groove V1 is distributed around the opening area 003, and the orthographic projection of the first through groove V1 on the substrate 100 is located within the orthographic projection of the partition groove 500a on the substrate 100, and the boundary of the orthographic projection of the first through groove V1 on the substrate 100 does not coincide with the boundary of the orthographic projection of the partition groove 500a on the substrate 100.

[0061] The light-emitting layer 202 in the display panel 000 is located on the side of the first electrode layer 201 away from the substrate 100, and the portion of the light-emitting layer 202 located inside the partition groove 500a is disconnected from the portion of the light-emitting layer 202 located outside the partition groove 500a.

[0062] The second electrode layer 203 in the display panel 000 is located on the side of the light-emitting layer 202 away from the substrate 100, and the portion of the second electrode layer 203 located inside the partition groove 500a is disconnected from the portion of the second electrode layer 203 located outside the partition groove 500a. In this case, the second electrode layer 203 may include: a first portion 2031, a second portion 2032, and a third portion 2033 separately disposed, wherein the first portion 2031 is closer to the opening area 003 relative to the partition groove 500a, the second portion 2032 is farther away from the opening area 003 relative to the partition groove 500a, and the third portion 2033 is located inside the partition groove 500a. In this way, the isolation groove 500a has a better isolation effect on the second electrode layer 203, which can ensure that the third part 2033 and the first part 2031 of the second electrode layer 203 are not charged with a greater probability. This prevents water vapor in the external environment from entering the transition area 004 from the opening area 003 and causing an electrolytic reaction, thereby preventing the film layer from being corroded and improving the reliability of the display panel 000.

[0063] The isolation pillars 300 in the display panel 000 are located within the area enclosed by the partition groove 500a and are distributed around the opening area 003. The isolation pillars 300 can be used to isolate the first portion 2031 of the second electrode layer 203, thereby further ensuring that the portion of the second electrode layer 203 located in the transition region 004 is not charged, improving the reliability of the display panel 000. The isolation pillars 300 can also be used to isolate the portion of the light-emitting layer 202 located in the transition region 004. Since the light-emitting layer 202 contains organic materials, which have strong water absorption, the display panel 000 utilizes the isolation pillars 300 and the partition groove 500a to isolate the portion of the light-emitting layer 202 located in the transition region 004, effectively preventing water and oxygen from the external environment from entering the display area 001 from the opening area 003 along the light-emitting layer 202, thus affecting the display effect of the display panel 000. Figure 4 As shown, there can be multiple isolation pillars 300 in the display panel 000, and multiple isolation pillars 300 can be nested and distributed sequentially.

[0064] In summary, the display panel provided in this application may include: a substrate, a first planarization layer, a first electrode layer, a light-emitting layer, a second electrode layer, and isolation pillars. Since the portion of the first planarization layer located in the transition region has an isolation groove, and the portion of the first electrode layer located in the transition region has a first through-groove, the orthographic projection of the first through-groove onto the substrate lies within the orthographic projection of the isolation groove onto the substrate, and the boundary of the orthographic projection of the first through-groove onto the substrate does not coincide with the boundary of the orthographic projection of the isolation groove onto the substrate. Therefore, the portion of the second electrode layer located within the isolation groove can be disconnected from the portion located outside the isolation groove. This provides a better isolation effect for the second electrode layer, increasing the probability that the portion of the second electrode layer located in the transition region is not charged. This prevents moisture from the external environment from entering the transition region through the opening area and causing an electrolytic reaction, thereby preventing film corrosion and improving the reliability of the display panel.

[0065] Please refer to Figure 6 , Figure 6 This is a schematic diagram of a partial film layer structure of a display panel provided in an embodiment of this application. The portion of the first electrode layer 201 located in the transition region 004 may include: a first partition portion 2012 and a second partition portion 2013 distributed around the opening region 003, a first through groove V1 located between the first partition portion 2012 and the second partition portion 2013, and the first partition portion 2012 being closer to the opening region 003 than the second partition portion 2013.

[0066] The first partition portion 2012 protrudes from the partition groove 500a near the opening area 003 on the side facing the first through groove V1, while the second partition portion 2013 protrudes from the partition groove 500a away from the opening area 003 on the side facing the first through groove V1. This ensures that the partition groove 500a provides good isolation to the second electrode layer 203, improving the reliability of the display panel 000.

[0067] The pixel definition layer 400 may also have a third through-slot V3 corresponding to the first partition portion 2012 and the second partition portion 2013. The orthographic projection of the third through-slot V3 on the substrate 100 overlaps with the orthographic projection of the first partition portion 2012 on the substrate 100 and also overlaps with the orthographic projection of the second partition portion 2013 on the substrate 100. The orthographic projection of the partition slot 500a on the substrate 100 is located within the orthographic projection of the third through-slot V3 on the substrate 100, and the boundary of the orthographic projection of the partition slot 500a on the substrate 100 does not coincide with the boundary of the orthographic projection of the third through-slot V3 on the substrate 100.

[0068] It should be noted that, in one possible scenario, after the first planarization layer 500 and the first electrode layer 201 are formed, the first planarization layer 500 located at the first through-hole V1 can be over-etched using methods such as gas etching to form the isolation trench 500a, such that the orthographic projection of the first through-hole V1 on the substrate 100 is located within the orthographic projection of the isolation trench 500a on the substrate 100, and the boundary of the orthographic projection of the first through-hole V1 on the substrate 100 does not coincide with the boundary of the orthographic projection of the isolation trench 500a on the substrate 100.

[0069] In another possible scenario, after forming the pixel definition layer 400, the first planarization layer 500 located at the first through-hole V1 can be over-etched using methods such as gas etching to form the isolation trench 500a. Since the pixel definition layer 400 has a third through-hole V3, the pixel definition layer 400 will not affect the over-etching of the first planarization layer 500. Simultaneously, since the pixel definition layer 400 can be an organic material, over-etching the first planarization layer 500 located at the first through-hole V1 using methods such as gas etching after forming the pixel definition layer 400 can prevent residual organic material in the isolation trench 500a, ensuring a greater depth of the isolation trench 500a in the direction perpendicular to the substrate 100, thereby ensuring that the isolation trench 500a can isolate the second electrode layer 203 with a higher probability.

[0070] In this embodiment, the portion of the first electrode layer 201 located in the transition region 004 may further include a detection electrode portion 2014. The detection electrode portion 2014 is distributed around the opening region 003, and the detection electrode portion 2014 is closer to the opening region 003 than the partition groove 500a. A portion of the light-emitting layer 202 is in contact with the detection electrode portion 2014. Here, the detection electrode portion 2014, the overlapping portion of the light-emitting layer 202 with the detection electrode portion 2014, and the overlapping portion of the second electrode layer 203 with the detection electrode portion 2014 can form a detection pixel 600, which is used to detect the partitioning effect of the partition groove 500a on the second electrode layer 203.

[0071] like Figure 6 As shown, the portion of the pixel definition layer 400 in the display panel 000 located within the transition region 004 may also have a second through-slot V2. The second through-slot V2 is distributed around the opening region 003, and the orthographic projection of the second through-slot V2 on the substrate 100 overlaps with the orthographic projection of the detection electrode portion 2014 on the substrate 100. The portion of the light-emitting layer 202 distributed within the second through-slot V2 can contact the detection electrode portion 2014. In this case, the detection electrode portion 2014, the portion of the light-emitting layer 202 located within the second through-slot V2, and the portion of the second electrode layer 203 located within the second through-slot V2 can constitute a detection pixel 600.

[0072] The display panel 000 may further include a signal connection line 700, which is electrically connected to the detection electrode section 2014 and is used to apply a positive potential signal to the detection electrode section 2014.

[0073] Even if the partition groove 500a fails to isolate the second electrode layer 203, the first portion 2031 of the second electrode layer 203 will still be negatively charged. This causes the portion of the second electrode layer 203 located within the second through groove V2 to also become negatively charged. This creates a potential difference between the detection electrode portion 2014 and the portion of the second electrode layer 203 located within the second through groove V2, exciting the portion of the light-emitting layer 202 located within the second through groove V2 to emit light. Therefore, the detection pixel 600 can detect the isolation effect of the partition groove 500a on the second electrode layer 203, thereby screening out display panels 000 with failed isolation during production and improving product yield.

[0074] In this embodiment, the detection electrode portion 2014 in the first electrode layer 201 can have various possible implementations. This embodiment illustrates the following two possible implementations as examples:

[0075] For the first possible implementation, please refer to... Figure 7 , Figure 7This is a schematic diagram of a partial film structure of another display panel provided in an embodiment of this application. The first partition portion 2012 and the detection electrode portion 2014 can be the same conductive structure. In this case, the second through-slot V2 and the third through-slot V3 of the pixel definition layer 400 are connected, that is, the second through-slot V2 and the third through-slot V3 of the pixel definition layer 400 can be the same through-slot. The orthographic projection of the second through-slot V2 in the pixel definition layer 400 onto the substrate 100 overlaps with the orthographic projection of the detection electrode portion 2014 onto the substrate 100, and the orthographic projection of the partition slot 500a onto the substrate 100 is located within the orthographic projection of the second through-slot V2 onto the substrate 100. The portion of the light-emitting layer 202 distributed within the second through-slot V2 can contact the detection electrode portion 2014.

[0076] The second possible implementation is as follows: Figure 6 As shown, the detection electrode portion 2014 and the first partition portion 2012 can be separated, and the detection electrode portion 2014 is closer to the opening region 003 than the first partition portion 2012. In this case, the orthographic projection of the second through-groove V2 in the pixel definition layer 400 onto the substrate 100 lies within the orthographic projection of the detection electrode portion 2014 onto the substrate 100. The portion of the light-emitting layer 202 distributed within the second through-groove V2 can contact the detection electrode portion 2014.

[0077] It should be noted that since both the light-emitting layer 202 and the second electrode layer 203 in the display panel 000 can be formed by a whole-layer vapor deposition process, during the vapor deposition of the second electrode layer 203, the second electrode layer 203 is prone to contact with the first electrode layer 201 at the isolation groove 500a, resulting in a short circuit and causing the light-emitting layer 202 to fail to emit light normally. For an example, please refer to... Figure 8 , Figure 8 This is a schematic diagram of a partial film layer structure of another display panel provided in this application embodiment. At the first through groove V1 of the first electrode layer 201, the second portion 2032 of the second electrode layer 203 contacts the second partition portion 2013 of the first electrode layer 201, and the first portion 2031 of the second electrode layer 203 contacts the first partition portion 2012 of the first electrode layer 201. Therefore, the detection electrode portion 2014 is separately disposed from the first partition portion 2012, which ensures that the detection electrode portion 2014 in the detection pixel 600 and the second electrode layer 203 will not short-circuit, thereby accurately detecting the partitioning effect of the partition groove 500a on the second electrode layer 203, filtering out display panels 000 with failed partitioning, and improving the accuracy of detection.

[0078] It should also be noted that, for the reasons mentioned above, in this embodiment of the application, the second partition 2013 in the first electrode layer 201 is also separately disposed from the plurality of first electrode blocks 2011, thereby ensuring that the plurality of light-emitting devices 200 can emit light normally and ensuring the display effect of the display panel 000.

[0079] like Figure 3 As shown, the display panel 000 may further include: multiple pixel driving circuits P, all of which are located on the side of the first planarization layer 500 facing the substrate 100. The multiple pixel driving circuits P are electrically connected to multiple first electrode blocks 2011 to drive the corresponding light-emitting devices 200 to emit light, thereby realizing the display function of the display panel 000.

[0080] Please refer to Figure 9 , Figure 9 This is a top view of another display panel provided in an embodiment of this application. The light-emitting devices 200 in the display panel 000 can be arranged in multiple columns along a first direction X and in multiple rows along a second direction Y. Here, the first direction X may intersect with the second direction Y; for example, in one possible case, the first direction X may be perpendicular to the second direction Y. Therefore, the multiple pixel driving circuits P corresponding to the multiple light-emitting devices 200 are arranged in multiple columns along the first direction X and in multiple rows along the second direction Y.

[0081] The signal connection line 700 in the display panel 000 is electrically connected to at least a portion of the pixel driving circuit P.

[0082] For example, in one possible case, please refer to Figure 10 , Figure 10 This is a top view of another display panel provided in an embodiment of this application. The display panel 000 may further include: a first power signal line 710, which is electrically connected to each pixel driving circuit P and is used to apply a high-level power signal to the pixel driving circuit P. Since the high-level power signal is a positive potential signal, the signal connection line 700 may include at least a portion of the first power signal line 710.

[0083] It should be noted that the first power signal line 710 in the display panel 000 may include: multiple first sub-power lines 711 extending along the first direction X, and multiple second sub-power lines 712 extending along the second direction Y. The first sub-power lines 711 and second sub-power lines 712 are electrically connected at their intersections, so that the first sub-power lines 711 and second sub-power lines 712 can apply the same potential to the pixel driving circuits P at various locations in the display panel 000, ensuring a better display effect of the display panel 000.

[0084] In this case, please refer to Figure 11, Figure 11 yes Figure 10 An enlarged schematic diagram of point R in the middle. The signal connection line 700 in the display panel 000 may include at least one of two adjacent second sub-power lines 712 located on both sides of the opening area 003 in the first direction X, and / or at least one of two adjacent first sub-power lines 711 located on both sides of the opening area 003 in the second direction Y.

[0085] Here, at least one of the two adjacent second sub-power lines 712 located on both sides of the aperture area 003 in the first direction X can be electrically connected to the detection electrode section 2014, and / or at least one of the two adjacent first sub-power lines 711 located on both sides of the aperture area 003 in the second direction Y can be electrically connected to the detection electrode section 2014, thereby applying a positive potential signal to the detection electrode section 2014, ensuring that the detection pixel 600 can detect the blocking effect of the blocking groove 500a on the second electrode layer 203, thereby screening out display panels 000 with blocking failure and improving product yield. Furthermore, the short distance between the signal connection line 700 and the detection electrode section 2014 saves wiring space and avoids short circuits between different signal lines in the display panel 000.

[0086] It should be noted that the first sub-power line 711 and the second sub-power line 712 in the first power signal line 710 are disposed in different layers. That is, the film layer on which the first sub-power line 711 is located and the film layer on which the second sub-power line 712 is located in the first power signal line 710 are not the same conductive layer, and an insulating layer is disposed between the two conductive layers.

[0087] like Figure 3 As shown, the pixel driving circuit P in the display panel 000 may include at least two transistors and at least one storage capacitor. 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 200 via a transfer electrode Z. Here, the transfer electrode Z may be a single-layer structure or a double-layer structure. For example, in the case of a double-layer structure, the transfer electrode may include a first sub-transfer electrode and a second sub-transfer electrode stacked together. This application does not impose any limitations on this. This embodiment illustrates the example of the drain D being electrically connected to the anode of the light-emitting device 200 via a single transfer electrode Z.

[0088] The display panel 000 may also include an insulating layer located between two adjacent conductive layers. For example, such as... Figure 3 As shown, the display panel 000 may further include: a buffer layer 1000 located on one side of the substrate 100, a first gate insulating layer 1100 located between the active layer Act and the gate G, a second gate insulating layer 1200 located between the first capacitor electrode C1 and the second capacitor electrode C2, an interlayer dielectric layer 1300 located between the second capacitor electrode C2 and the source S and drain D layers, a passivation layer 1400 located on the side of the source S and drain D layers away from the substrate 100, and a second planarization layer 1500 located on the side of the passivation layer 1400 away from the substrate 100.

[0089] In this embodiment, the first sub-power line 711 may be disposed in the same layer as the first capacitor electrode C1 or the second capacitor electrode C2 and made of the same material, and the second sub-power line 712 may be disposed in the same layer as the adapter electrode Z and made of the same material.

[0090] It should also be noted that the signal connection line 700 in the display panel 000 may include at least one of two adjacent second sub-power lines 712 located on both sides of the opening area 003 in the first direction X, and / or, in the case of at least one of two adjacent first sub-power lines 711 located on both sides of the opening area 003 in the second direction Y, the isolation effect of the isolation groove 500a on the second electrode layer 203 can be detected by determining whether the detection pixel 600 emits light, and the isolation effect of the isolation groove 500a on the second electrode layer 203 can also be detected by detecting the resistance between the signal connection line 700 and the portion of the second electrode layer 203 distributed in the transition area 004.

[0091] For example, when the isolation groove 500a successfully isolates the second electrode layer 203, the resistance between the signal connection line 700 and the portion of the second electrode layer 203 distributed in the transition region 004 is greater than or equal to 1×10⁸ ohms; when the isolation groove 500a fails to isolate the second electrode layer 203, the resistance between the signal connection line 700 and the portion of the second electrode layer 203 distributed in the transition region 004 is less than 1×10⁶ ohms.

[0092] In another possible case, such as Figure 10 As shown, the display panel 000 may further include: multiple data signal lines 720, the overall extension direction of which is parallel to the second direction Y. The multiple data signal lines 720 correspond to multiple column pixel driving circuits P, and each data signal line 720 is electrically connected to a corresponding column pixel driving circuit P.

[0093] The signal connection line 700 includes a target data line, which is a data signal line 720 that is electrically connected to the detection electrode section 2014 among multiple data signal lines 720.

[0094] Please refer to Figure 12 , Figure 12 yes Figure 10 Another enlarged schematic diagram at point R. Multiple data signal lines 720 may include a first data line 721 and a second data line 722 located on both sides of the opening area 003 in the first direction X. The first data line 721 may include a connected first data line body 721a and a first winding portion 721b, and the second data line 722 may include a connected second data line body 722a and a second winding portion 722b. The extension directions of both the first data line body 721a and the second data line body 722a are parallel to the second direction Y, and both are at least distributed within the display area 001; the first winding portion 721b and the second winding portion 722b are located on both sides of the opening area 003 in the first direction X, and are both distributed within the transition area 004.

[0095] The target data line can be either a first data line 721 or a second data line 722. Optionally, when the target data line is the first data line 721, the detection electrode 2014 can be electrically connected to the first winding portion 721b; when the target data line is the second data line 722, the detection electrode 2014 can be electrically connected to the second winding portion 722b. In this way, a positive potential signal can be applied to the detection electrode 2014 through the target data line, ensuring that the detection pixel 600 can detect the blocking effect of the blocking groove 500a on the second electrode layer 203, thereby filtering out display panels 000 with failed blocking and improving product yield. The short distance between the target data line and the detection electrode 2014 saves wiring space and avoids short circuits between different signal lines in the display panel 000. Furthermore, by applying a positive potential signal to the detection electrode 2014 through the target data line, the detection pixel 600 in the transition area 004 can be illuminated when the display area 001 of the display panel 000 is a black screen, thereby reducing the difficulty of detection.

[0096] In this application, the data signal line 720 can be arranged on the same layer as the second sub-power line 712 and made of the same material.

[0097] In another possible scenario, such as Figure 10 As shown, the display panel 000 may further include: multiple initial signal lines 730, the overall extension direction of the initial signal lines 730 being parallel to the first direction X. The multiple initial signal lines 730 correspond to multiple row pixel driving circuits P, and each initial signal line 730 is electrically connected to a corresponding row pixel driving circuit P.

[0098] The signal connection line 700 includes a target initial line, which is the initial signal line 730 that is electrically connected to the detection electrode section 2014 among a plurality of initial signal lines 730.

[0099] Please refer to Figure 13 , Figure 13 yes Figure 10 Another enlarged schematic diagram at point R. Multiple initial signal lines 730 may include a first initial line 731 and a second initial line 732 located on both sides of the opening region 003 in the second direction Y. The first initial line 731 may include a first initial line body 731a and a third winding portion 731b connected together, and the second initial line 732 may include a second initial line body 732a and a fourth winding portion 732b connected together. The first initial line body 731a and the second initial line body 732a extend in directions parallel to the first direction X and are both at least distributed within the display area 001; the third winding portion 731b and the fourth winding portion 732b are located on both sides of the opening region 003 in the second direction Y and are both distributed within the transition region 004.

[0100] The target initial line can be either a first initial line 731 or a second initial line 732. Optionally, if the target initial line is the first initial line 731, the detection electrode 2014 can be electrically connected to the third winding section 731b; if the target initial line is the second initial line 732, the detection electrode 2014 can be electrically connected to the fourth winding section 732b. In this way, a positive potential signal can be applied to the detection electrode 2014 through the target initial line, ensuring that the detection pixel 600 can detect the blocking effect of the blocking groove 500a on the second electrode layer 203, thereby filtering out display panels 000 that have failed to block, improving product yield. The short distance between the target initial line and the detection electrode 2014 saves wiring space and avoids short circuits between different signal lines in the display panel 000. Furthermore, by applying a positive potential signal to the detection electrode 2014 through the target initial line, the detection pixel 600 in the transition area 004 can be lit up when the display area 001 of the display panel 000 is a black screen, thereby reducing the difficulty of detection.

[0101] In this embodiment, the initial signal line 730 can be disposed on the same layer as the first sub-power line 711 and made of the same material.

[0102] It should be noted that when the signal connection line 700 in the display panel 000 includes the target initial line, the isolation effect of the isolation groove 500a on the second electrode layer 203 can be detected by judging whether the detection pixel 600 emits light, and the isolation effect of the isolation groove 500a on the second electrode layer 203 can also be detected by detecting the resistance between the signal connection line 700 and the part of the second electrode layer 203 distributed in the transition area 004.

[0103] For example, when the isolation groove 500a successfully isolates the second electrode layer 203, the resistance between the signal connection line 700 and the portion of the second electrode layer 203 distributed in the transition region 004 is greater than or equal to 1×10⁸ ohms; when the isolation groove 500a fails to isolate the second electrode layer 203, the resistance between the signal connection line 700 and the portion of the second electrode layer 203 distributed in the transition region 004 is less than 1×10⁶ ohms.

[0104] like Figure 3 As shown, the display panel 000 may further include an encapsulation layer 800. The encapsulation layer 800 in the display panel 000 is located on the side of the light-emitting device 200 away from the substrate 100, and the encapsulation layer 800 may include at least: a first inorganic encapsulation layer 801, an organic encapsulation layer 802, and a second inorganic encapsulation layer 803 stacked along a direction away from the substrate 100. Here, the first inorganic encapsulation layer 801 may contact the side of the second electrode layer 203 away from the substrate 100; that is, the first inorganic encapsulation layer 801 may cover multiple light-emitting devices 200. The organic encapsulation layer 802 can ensure good flatness of the portion of the display panel 000 located within the display area 001, thereby ensuring better performance of other functional layers (e.g., touch layer) subsequently formed on the portion of the encapsulation layer 800 located within the display area 001. The second inorganic encapsulation layer 803 can be used to cover the side of the organic encapsulation layer 802 away from the substrate 100. By setting an encapsulation layer 800 in the display panel 000, water and oxygen from the external environment can be prevented from corroding the light-emitting device 200 from the display side of the display panel 000, thereby improving the reliability of the display panel 000.

[0105] However, due to the high fluidity of the organic encapsulation layer 802 and its poor ability to isolate water and oxygen, therefore, if Figure 2 , Figures 4 to 8 As shown, the display panel 000 may further include an annular barrier 900, which may be located within the transition area 004 and distributed around the opening area 003. The annular barrier 900 can be used to prevent the organic encapsulation layer 802 from overflowing outward, so that the organic encapsulation layer 802 is located outside the area enclosed by the annular barrier 900. That is, within the area enclosed by the annular barrier 900, the first inorganic encapsulation layer 801 and the second inorganic encapsulation layer 803 are in direct contact to ensure that the first inorganic encapsulation layer 801 and the second inorganic encapsulation layer 803 can wrap the organic encapsulation layer 802. In this way, it can be ensured that no organic encapsulation layer 802 is distributed near the opening area 003, thereby ensuring the encapsulation effect of the display panel 000.

[0106] The annular barrier 900 may include a first barrier 901 and a second barrier 902 stacked along a direction away from the substrate 100. The first barrier 901 may be disposed in the same layer as the first planarization layer 500 and made of the same material, and the second barrier 902 may be disposed in the same layer as the pixel definition layer 400 and made of the same material.

[0107] The number of annular retaining walls 900 is at least one, and the annular retaining walls 900 can be located on the side of the plurality of isolation pillars 300 facing the opening area 003; or, the annular retaining walls 900 can be located on the side of the plurality of isolation pillars 300 away from the opening area 003; or, the annular retaining walls 900 can be located between two adjacent isolation pillars 300.

[0108] In summary, the display panel provided in this application may include: a substrate, a first planarization layer, a first electrode layer, a light-emitting layer, a second electrode layer, and isolation pillars. Since the portion of the first planarization layer located in the transition region has an isolation groove, and the portion of the first electrode layer located in the transition region has a first through-groove, the orthographic projection of the first through-groove onto the substrate lies within the orthographic projection of the isolation groove onto the substrate, and the boundary of the orthographic projection of the first through-groove onto the substrate does not coincide with the boundary of the orthographic projection of the isolation groove onto the substrate. Therefore, the portion of the second electrode layer located within the isolation groove can be disconnected from the portion located outside the isolation groove. This provides a better isolation effect for the second electrode layer, increasing the probability that the third and first portions of the second electrode layer are not charged. This prevents moisture from the external environment from entering the transition region through the opening area and causing an electrolytic reaction, thereby preventing film corrosion and improving the reliability of the display panel.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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 in that, The display panel has: a display area, a transition area, and an aperture area, wherein the display area is located around the aperture area, and the transition area is located between the display area and the aperture area; the display panel includes: a substrate, a first planarization layer, a first electrode layer, a light-emitting layer, a second electrode layer, and isolation pillars; The first planarization layer is located on one side of the substrate, and the portion of the first planarization layer located in the transition region has a partition groove, the partition groove being distributed around the opening region; The first electrode layer is located on the side of the first planarization layer opposite to the substrate. The portion of the first electrode layer located in the display area includes: a plurality of separately disposed first electrode blocks. The portion of the first electrode layer located in the transition area has a first through groove. The first through groove is distributed around the opening area. The orthographic projection of the first through groove on the substrate is located within the orthographic projection of the partition groove on the substrate. The boundary of the orthographic projection of the first through groove on the substrate does not coincide with the boundary of the orthographic projection of the partition groove on the substrate. The light-emitting layer is located on the side of the first electrode layer away from the substrate, and the portion of the light-emitting layer located inside the partition groove is disconnected from the portion of the light-emitting layer located outside the partition groove; The second electrode layer is located on the side of the light-emitting layer away from the substrate, and the portion of the second electrode layer located inside the partition groove is disconnected from the portion of the second electrode layer located outside the partition groove; The isolation columns are located within the area enclosed by the partition groove and are distributed around the opening area.

2. The display panel according to claim 1, characterized in that, The portion of the first electrode layer located in the transition region includes: a first partition portion and a second partition portion distributed around the opening region; the first through groove is located between the first partition portion and the second partition portion, and the first partition portion is closer to the opening region than the second partition portion; The first partition portion protrudes from the side of the partition groove closest to the opening area on the side facing the first through groove, and the second partition portion protrudes from the side of the partition groove away from the opening area on the side facing the first through groove.

3. The display panel according to claim 1, characterized in that, The portion of the first electrode layer located in the transition region includes: a detection electrode portion, the detection electrode portion being distributed around the opening region, and the detection electrode portion being closer to the opening region relative to the partition groove; the light-emitting layer having a portion that contacts the detection electrode portion; The display panel further includes a signal connection line, which is electrically connected to the detection electrode portion and is used to apply a positive potential signal to the detection electrode portion.

4. The display panel according to claim 3, characterized in that, The portion of the first electrode layer located in the transition region further includes: a first partition portion and a second partition portion distributed around the opening region; the first through groove is located between the first partition portion and the second partition portion, and the first partition portion is closer to the opening region than the second partition portion; In this configuration, the first partition portion and the detection electrode portion are the same conductive structure; or, the detection electrode portion is disposed separately from the first partition portion, and the detection electrode portion is closer to the opening area relative to the first partition portion.

5. The display panel according to claim 4, characterized in that, The display panel further includes: a plurality of pixel driving circuits, all of which are located on the side of the first planarization layer facing the substrate, and are electrically connected to a plurality of the first electrode blocks; the plurality of pixel driving circuits are arranged in multiple columns along a first direction and in multiple rows along a second direction; The signal connection line is electrically connected to at least a portion of the pixel driving circuit.

6. The display panel according to claim 5, characterized in that, The display panel further includes: a first power signal line, which is electrically connected to each of the pixel driving circuits; The signal connection line includes at least a portion of the first power signal line.

7. The display panel according to claim 5, characterized in that, The display panel further includes: multiple data signal lines, the overall extension direction of which is parallel to the second direction; the multiple data signal lines correspond to multiple columns of the pixel driving circuits, and one data signal line is electrically connected to a corresponding column of the pixel driving circuits; The signal connection line includes a target data line, which is the data signal line that is electrically connected to the detection electrode section among the plurality of data signal lines.

8. The display panel according to claim 5, characterized in that, The display panel further includes: multiple initial signal lines, the overall extension direction of which is parallel to the first direction; the multiple initial signal lines correspond to multiple rows of the pixel driving circuits, and one initial signal line is electrically connected to a corresponding row of the pixel driving circuits; The signal connection line includes a target initial line, which is the initial signal line that is electrically connected to the detection electrode among the plurality of initial signal lines.

9. The display panel according to any one of claims 3-8, characterized in that, The display panel further includes a pixel definition layer, which is located on the side of the first electrode layer away from the substrate; The portion of the pixel definition layer located within the display area has multiple pixel openings, each pixel opening corresponding to a plurality of first electrode blocks, and the orthographic projection of the pixel openings on the substrate is located within the orthographic projection of the first electrode blocks on the substrate. The portion of the pixel definition layer located within the transition region has a second through groove. The second through groove is distributed around the opening region, and the orthographic projection of the second through groove on the substrate overlaps with the orthographic projection of the detection electrode portion on the substrate. The light-emitting layer is located on the side of the pixel definition layer away from the substrate. The portion of the light-emitting layer distributed within the pixel opening contacts the first electrode block, and the portion of the light-emitting layer distributed within the second through groove contacts the detection electrode portion.

10. A display device, characterized in that, 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 9.

Images