Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel comprises a substrate, a pixel definition layer, a light emitting device and an isolation part. And the light-emitting layers in the different light-emitting devices in the same sub-pixel region are disconnected through the isolation parts. Therefore, in the process of preparing the display panel, a light-emitting layer which is connected into a whole does not need to be prepared in a single sub-pixel region with a relatively large area, but at least two light-emitting layers which are arranged at intervals and are in one-to-one correspondence with at least two second pixel openings are prepared in the single sub-pixel region through the partition effect of the isolation part; the light-emitting layers respectively belong to a part in different light-emitting devices. Thus, it is guaranteed that the orthographic projection area of the light-emitting layer in the single light-emitting device in the same sub-pixel area on the substrate is small, the uniformity of the thickness of the prepared light-emitting layer is effectively improved, the probability of abnormal display of the display panel is reduced, and then the reliability of the display panel is improved.

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] Organic light-emitting diodes (OLEDs) are hailed as the next generation of display devices due to their advantages such as self-illumination, high efficiency, vibrant colors, thinness, energy saving, and flexibility, and have attracted increasing attention in recent years.

[0003] Currently, display panels typically include a substrate and light-emitting devices mounted on the substrate. The substrate can transmit driving signals to the corresponding light-emitting devices via pixel driving circuits, enabling the light-emitting layers of the respective devices to emit light outwards.

[0004] However, in the process of fabricating large-sized light-emitting devices using photolithography, it is very easy to cause uneven thickness of the light-emitting layer inside the device, resulting in poor light-emitting effect and consequently lower 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 of display panels. The technical solution is as follows:

[0006] On one hand, a display panel is provided, the display panel having a plurality of sub-pixel regions arranged in an array; the display panel includes: a substrate, a pixel definition layer, a light-emitting device, and an isolation portion;

[0007] The pixel definition layer is located on one side of the substrate, and the pixel definition layer has a plurality of first pixel openings, with at least two adjacent first pixel openings located in the same sub-pixel region;

[0008] The number of light-emitting devices is multiple, and the multiple light-emitting devices correspond to the multiple first pixel openings. At least a portion of one of the light-emitting devices is located in the corresponding first pixel opening. The light-emitting device includes: a first electrode, a light-emitting layer and a second electrode stacked together, wherein the first electrode is closer to the substrate than the second electrode.

[0009] The isolation portion is located on the side of the pixel definition layer opposite to the substrate, and the isolation portion has a plurality of second pixel openings corresponding to a plurality of first pixel openings, and the second pixel openings are connected to the corresponding first pixel openings;

[0010] In this sub-pixel region, the first electrodes of each of the light-emitting devices are electrically connected, and the second electrodes of each of the light-emitting devices in the same sub-pixel region are electrically connected; the isolation portion is used to isolate the light-emitting layers in different light-emitting devices in the same sub-pixel region.

[0011] Optionally, the isolation portion is conductive, and the isolation portion includes: a first sub-isolation portion disposed around the sub-pixel region, and a second sub-isolation portion located within the sub-pixel region, wherein the first sub-isolation portion is connected to the second sub-isolation portion, and the first sub-isolation portion and the second sub-isolation portion can form at least two second pixel openings;

[0012] In this sub-pixel region, the second electrodes of two adjacent light-emitting devices are electrically connected through the second sub-isolation section.

[0013] Optionally, the width of the sub-pixel region in the first direction is greater than the width in the second direction, and the first direction intersects the second direction;

[0014] The second sub-isolating portion is strip-shaped, and the extending direction of the second sub-isolating portion is parallel to the second direction.

[0015] Optionally, within the same sub-pixel region, the number of second sub-isolation portions is at least one, and the number of second pixel openings is one more than the number of second sub-isolation portions.

[0016] Optionally, the second sub-isolation section includes: a first isolation strip and a second isolation strip, wherein the extension direction of the first isolation strip intersects the extension direction of the second isolation strip.

[0017] Optionally, the substrate has a substrate and data signal lines distributed on the substrate, the extension direction of the data signal lines being parallel to the extension direction of the first isolation strip, and the orthographic projection of the data signal lines on the substrate overlapping the orthographic projection of the first isolation strip on the substrate.

[0018] Optionally, the pixel definition layer further has a first auxiliary opening located between adjacent first pixel openings within the same sub-pixel region;

[0019] At least a portion of the second sub-isolation section is located within the first auxiliary opening.

[0020] Optionally, the second electrodes of different light-emitting devices in different sub-pixel regions are electrically connected through the first sub-isolation section.

[0021] Optionally, the first electrodes of each of the light-emitting devices in the same sub-pixel region are separately disposed, and the substrate has a first connecting electrode, which is electrically connected to the first electrodes of each of the light-emitting devices in the same sub-pixel region;

[0022] Alternatively, the first electrodes of each of the light-emitting devices within the same sub-pixel region are connected together.

[0023] Optionally, the substrate includes: a substrate, a pixel driving circuit, a first planarization layer, a second connecting electrode, and a second planarization layer;

[0024] The pixel driving circuit is located on one side of the substrate;

[0025] The first planarization layer is located on the side of the pixel driving circuit that is away from the substrate;

[0026] The second connection electrode is located on the side of the first planarization layer opposite to the substrate, and the second connection electrode is electrically connected to the pixel driving circuit;

[0027] The second planarization layer is located on the side of the second connecting electrode away from the substrate. The pixel definition layer and the light-emitting device are both located on the side of the second planarization layer away from the substrate, and the first electrode of each of the light-emitting devices in the same sub-pixel region is electrically connected to the second connecting electrode.

[0028] Optionally, the second planarization layer has a first connection hole, through which the first electrode is electrically connected to the second connection electrode;

[0029] Wherein, the orthographic projection of the first connecting hole on the substrate does not coincide with the orthographic projection of the light-emitting layer on the substrate.

[0030] Optionally, the isolation portion includes: a first isolation layer, an isolation pillar, and a second isolation layer stacked together, wherein the first isolation layer is closer to the substrate than the second isolation layer, and the isolation pillar is conductive;

[0031] Wherein, the orthographic projection of the isolation pillar on the substrate is located within the orthographic projection of the first isolation layer on the substrate, and is located within the orthographic projection of the second isolation layer on the substrate; the outer boundary of the orthographic projection of the isolation pillar on the substrate does not coincide with the outer boundary of the orthographic projection of the first isolation layer on the substrate, and does not coincide with the outer boundary of the orthographic projection of the second isolation layer on the substrate.

[0032] Optionally, the display panel further includes: an encapsulation layer for encapsulating the light-emitting device; the encapsulation layer includes: a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer stacked together, wherein the first inorganic encapsulation layer is closer to the substrate than the second inorganic encapsulation layer.

[0033] Optionally, the first inorganic encapsulation layer includes: a plurality of separately disposed encapsulation protection portions, the plurality of encapsulation protection portions corresponding to the plurality of second pixel openings, at least a portion of the encapsulation protection portions being located within the second pixel openings and contacting the side of the second electrode in the corresponding light-emitting device facing away from the substrate.

[0034] Optionally, the light-emitting layers of each of the light-emitting devices within the same sub-pixel region are all used to emit the same type of light.

[0035] On the other hand, a display device is provided, the device comprising: a power supply component, and a display panel as described above, the power supply component being used to supply power to the display panel.

[0036] The beneficial effects of the technical solutions provided in this application include at least the following:

[0037] A display panel includes a substrate, a pixel definition layer, light-emitting devices, and an isolation portion. The isolation portion allows the light-emitting layers in different light-emitting devices located within the same sub-pixel region to be separated. Thus, during the fabrication of the display panel, it is no longer necessary to fabricate a continuous light-emitting layer within a single, large sub-pixel region. Instead, through the isolation portion, at least two separately arranged light-emitting layers, each corresponding to at least two second pixel openings, can be fabricated within a single sub-pixel region, and these light-emitting layers belong to different light-emitting devices. This ensures that the area of ​​the light-emitting layer in a single light-emitting device within the same sub-pixel region projected onto the substrate is small, effectively improving the uniformity of the fabricated light-emitting layer thickness. This reduces the probability of display abnormalities and improves the reliability of the display panel. Attached Figure Description

[0038] 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.

[0039] Figure 1 This is a top view of a single sub-pixel region in a display panel provided in an embodiment of this application;

[0040] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the film layer of the display panel at point A-A'.

[0041] Figure 3 This is a top view of a single sub-pixel region in a display panel provided in another embodiment of this application;

[0042] Figure 4 yes Figure 3 A schematic diagram of the film cross-section of the display panel at point B-B' is shown;

[0043] Figure 5 This is a top view of multiple sub-pixel regions in a display panel provided in an embodiment of this application;

[0044] Figure 6 This is a top view of multiple sub-pixel regions in another display panel provided in this application embodiment;

[0045] Figure 7 This is a top view of a plurality of sub-pixel regions in a display panel provided in another embodiment of this application;

[0046] Figure 8 This is a top view of a single sub-pixel region in a display panel provided in another embodiment of this application;

[0047] Figure 9 This is a partial structural cross-sectional view of a display panel provided in an embodiment of this application;

[0048] Figure 10 This is a partial structural cross-sectional view of another display panel provided in an embodiment of this application;

[0049] Figure 11 This is a partial structural cross-sectional view of another display panel provided in an embodiment of this application;

[0050] Figure 12 This is a partial structural cross-sectional view of another display panel provided in an embodiment of this application. Detailed Implementation

[0051] 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.

[0052] This application provides a display panel that may have multiple sub-pixel regions arranged in an array. Here, each sub-pixel region has a relatively large area; for example, the length and / or width of a single sub-pixel region of the display panel may be greater than or equal to 50 micrometers. For instance, the length of a single sub-pixel region may be 100 micrometers, and / or the width of a single sub-pixel region may be 100 micrometers.

[0053] Please refer to Figure 1 and Figure 2 , Figure 1 This is a top view of a single sub-pixel region in a display panel provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the film layer at point A-A' in the display panel. The display panel 000 may include: a substrate 100, a pixel definition layer 200, a light-emitting device 300, and an insulating portion 400.

[0054] The pixel definition layer 200 in the display panel 000 can be located on one side of the substrate 100. The pixel definition layer 200 can have multiple first pixel openings V1, and at least two adjacent first pixel openings V1 can be located in the same sub-pixel region P.

[0055] The display panel 000 may contain multiple light-emitting devices 300, and these multiple light-emitting devices 300 may correspond to multiple first pixel openings V1. Here, the light-emitting device 300 may include: a first electrode 301, a light-emitting layer 302, and a second electrode 303 stacked together. The first electrode 301 in the light-emitting device 300 may be closer to the substrate 100 than the second electrode 303.

[0056] It should be noted that the substrate 100 may have pixel driving circuits corresponding to multiple light-emitting devices 300, and each pixel driving circuit may be electrically connected to the first electrode 301 in the corresponding light-emitting device 300. By transmitting driving signals to the first electrode 301 in the corresponding light-emitting device 300 through each pixel driving circuit, the light-emitting layer 302 in the corresponding light-emitting device 300 may emit light outward.

[0057] At least a portion of a light-emitting device 300 may be located within a corresponding first pixel opening V1. For example, at least a portion of the light-emitting layer 302 and at least a portion of the first electrode 301 in a light-emitting device 300 may both be located within a corresponding first pixel opening V1.

[0058] The isolation portion 400 in the display panel 000 may be located on the side of the pixel definition layer 200 away from the substrate 100, and the isolation portion 400 may have a plurality of second pixel openings V2 corresponding to a plurality of first pixel openings V1. Here, the second pixel openings V2 may be connected to the first pixel openings V1.

[0059] In this design, the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P are electrically connected, and the second electrodes 303 of each light-emitting device 300 within the same sub-pixel region P are also electrically connected. Thus, under the driving action of the pixel driving circuit in the substrate 100, an electric field is formed between the first electrodes 301 and the second electrodes 303 of each light-emitting device 300 within the same sub-pixel region P. Under the influence of this electric field, holes generated by the first electrodes 301 and electrons generated by the second electrodes 303 of each light-emitting device 300 within the same sub-pixel region P can move towards the light-emitting layer 302 in the light-emitting device 300. Holes and electrons can combine into excitons within the light-emitting layer 302, causing the light-emitting layer 302 of each light-emitting device 300 within the same sub-pixel region P to emit light. The light-emitting layers 302 of each light-emitting device 300 within the same sub-pixel region P can all emit the same type of light. For example, the light-emitting layers 302 of each light-emitting device 300 within the same sub-pixel region P can all emit red, green, or blue light.

[0060] Here, the isolation portion 400 in the display panel 000 can be used to separate the light-emitting layers 302 of different light-emitting devices 300 within the same sub-pixel region P. That is, the isolation portion 400 can separate the light-emitting layers 302 of each different light-emitting device 300 located within the same sub-pixel region P. Thus, during the fabrication of the display panel 000, it is no longer necessary to fabricate an integrally connected light-emitting layer 302 within a single, large sub-pixel region P. Instead, through the isolation effect of the isolation portion 400, at least two separately arranged light-emitting layers 302, corresponding one-to-one with at least two second pixel openings K2, can be fabricated within a single sub-pixel region P, and these light-emitting layers 302 belong to different parts of different light-emitting devices 300. This ensures that the area of ​​the orthogonal projection of the light-emitting layer 302 in a single light-emitting device 300 within the same sub-pixel region P on the substrate 100 is small, effectively improving the uniformity of the thickness of the fabricated light-emitting layer 302, thereby reducing the probability of abnormal display in the display panel 000 and improving the reliability of the display panel 000.

[0061] Furthermore, since the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P are electrically connected, and the second electrodes 303 of each light-emitting device 300 within the same sub-pixel region P are also electrically connected, even if the light-emitting layers 302 in different light-emitting devices 300 within the same sub-pixel region P are disconnected, it can still be ensured that the light-emitting layers 302 in each light-emitting device 300 within the same sub-pixel region P emit light synchronously.

[0062] In summary, the display panel provided in this application includes: a substrate, a pixel definition layer, light-emitting devices, and an isolation portion. The isolation portion can separate the light-emitting layers in different light-emitting devices located in the same sub-pixel region. Thus, during the fabrication of the display panel, it is no longer necessary to fabricate a continuous light-emitting layer within a single, large sub-pixel region. Instead, through the isolation effect of the isolation portion, at least two separately arranged light-emitting layers corresponding one-to-one with at least two second pixel openings can be fabricated within a single sub-pixel region, and these light-emitting layers belong to different light-emitting devices. This ensures that the area of ​​the orthogonal projection of the light-emitting layer in a single light-emitting device within the same sub-pixel region is small, effectively improving the uniformity of the thickness of the fabricated light-emitting layers, thereby reducing the probability of abnormal display of the display panel and improving the reliability of the display panel.

[0063] In the embodiments of this application, please refer to Figure 3 and Figure 4 , Figure 3 This is a top view of a single sub-pixel region in a display panel provided in another embodiment of this application. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the film layer at point B-B' in the display panel. Here, the isolation portion 400 in the display panel 000 is conductive. The isolation portion 400 may include a first sub-isolation portion 401 surrounding the sub-pixel region P, and a second sub-isolation portion 402 located within the sub-pixel region P. The first sub-isolation portion 401 in the isolation portion 400 can be connected to the second sub-isolation portion 402, and the first sub-isolation portion 401 and the second sub-isolation portion 402 can form at least two second pixel openings V2. Thus, through the cooperative action of the first sub-isolation portion 401 and the second sub-isolation portion 402 in the isolation portion 400, the light-emitting layers 302 in the various light-emitting devices 300 located in the same sub-pixel region P can be disconnected, ensuring that the area of ​​the light-emitting layer 302 in a single light-emitting device 300 projected onto the substrate 100 is small.

[0064] Here, the second electrodes 303 of two adjacent light-emitting devices 300 within the same sub-pixel region P can be electrically connected through the second sub-isolation portion 402. That is, the second electrodes 303 of two adjacent light-emitting devices 300 within the same sub-pixel region P can both be connected to the second sub-isolation portion 402, thereby enabling the second electrodes 303 of two adjacent light-emitting devices 300 within the same sub-pixel region P to be electrically connected through the second sub-isolation portion 402.

[0065] In this application, the second electrodes 303 of different light-emitting devices 300 within different sub-pixel regions P can be electrically connected through the first sub-isolation portion 401. Thus, by connecting the second electrodes 303 of different light-emitting devices 300 within different sub-pixel regions P to the first sub-isolation portion 401, the second electrodes 303 of different light-emitting devices 300 within different sub-pixel regions P can be electrically connected through the first sub-isolation portion 401 and the second sub-isolation portion 402 in the isolation pillar 400.

[0066] For example, after the second electrodes 303 of each light-emitting device 300 in the display panel 000 are electrically connected together, the display panel can simultaneously provide a common voltage signal to the second electrodes 303 of each light-emitting device 300, for example, which can be a cathode power supply signal.

[0067] In this application, the multiple sub-pixel regions P in the display panel 000 may include: multiple red sub-pixel regions R, multiple green sub-pixel regions G, and multiple blue sub-pixel regions B. Specifically, the red sub-pixel regions R emit red light, the green sub-pixel regions G emit green light, and the blue sub-pixel regions B emit blue light.

[0068] In one possible scenario, one of the red sub-pixel region R, the green sub-pixel region G, and the blue sub-pixel region B contains at least two light-emitting devices 300, while the other two sub-pixel regions each contain only one light-emitting device 300. For example, please refer to... Figure 5 , Figure 5 This is a top view of multiple sub-pixel regions in a display panel according to an embodiment of this application. The blue sub-pixel region B contains at least two light-emitting devices 300, while the red sub-pixel region R and the green sub-pixel region G each contain only one light-emitting device 300. That is, a second isolation portion 402 is provided in the blue sub-pixel region B, so that the blue sub-pixel region B can be separated by the second isolation portion 402, while the red sub-pixel region R and the green sub-pixel region G do not have a second isolation portion 402 provided.

[0069] In another possible scenario, at least two of the red sub-pixel region R, the green sub-pixel region G, and the blue sub-pixel region B contain at least two light-emitting devices 300, while the other sub-pixel region contains only one light-emitting device 300. For example, please refer to... Figure 6 , Figure 6This is a top view of multiple sub-pixel regions in another display panel provided in this application embodiment. The blue sub-pixel region B and the red sub-pixel region R contain at least two light-emitting devices 300, while the green sub-pixel region G contains only one light-emitting device 300. That is, a second isolation portion 402 is provided in the blue sub-pixel region B and the red sub-pixel region R, allowing them to be separated by the second isolation portion 402, while the green sub-pixel region G does not have a second isolation portion 402.

[0070] In another possible scenario, the red sub-pixel region R, the green sub-pixel region G, and the blue sub-pixel region B each contain at least two light-emitting devices 300. For example, please refer to... Figure 7 , Figure 7 This is a top view of multiple sub-pixel regions in a display panel provided in another embodiment of this application. Each of the blue sub-pixel region B, the red sub-pixel region R, and the green sub-pixel region G includes at least two light-emitting devices 300. That is, a second isolation portion 402 is provided in each of the blue sub-pixel region B, the red sub-pixel region R, and the green sub-pixel region G, so that each of these regions can be separated by the second isolation portion 402.

[0071] In this embodiment, the second sub-isolation section 402 in the isolation section 400 can be arranged in various ways within the area enclosed by the first sub-isolation section 401. This embodiment will illustrate the following two optional implementation methods as examples:

[0072] The first optional implementation method, such as Figure 3 As shown, the width of the sub-pixel region P in the display panel 000 along the first direction A1 can be greater than the width of the sub-pixel region P in the second direction A2. For example, the ratio of the width of the sub-pixel region P in the first direction A1 to the width of the sub-pixel region P in the second direction A2 can be greater than 2. The first direction A1 can intersect with the second direction A2. For example, the first direction A1 can be perpendicular to the second direction A2.

[0073] Here, the second sub-isolation portion 402 in the isolation portion 400 can be strip-shaped, and the extending direction of the second sub-isolation portion 402 can be parallel to the second direction A2. In this case, the second sub-isolation portion 402 in the isolation portion 400 can divide the area enclosed by the first sub-isolation portion 401 into a plurality of second pixel openings V2 in the first direction A1.

[0074] In this application, within the same sub-pixel region P, the number of second sub-isolation portions 402 in the isolation portion 400 is at least one, and the number of second pixel openings V2 in the isolation portion 400 can be one more than the number of second sub-isolation portions 402. For example, if there is one second sub-isolation portion 402 in the isolation portion 400 within the same sub-pixel region P, the number of second pixel openings V2 in the isolation portion 400 can be two. As another example, if there are two second sub-isolation portions 402 in the isolation portion 400 within the same sub-pixel region P, the number of second pixel openings V2 in the isolation portion 400 can be three.

[0075] For the second optional implementation method, please refer to... Figure 8 , Figure 8 This is a top view of a single sub-pixel region in a display panel according to another embodiment of this application. The second sub-isolation portion 402 in the isolation portion 400 may include a first isolation strip 402a and a second isolation strip 402b. The extending direction of the first isolation strip 402a in the second sub-isolation portion 402 may intersect with the extending direction of the second isolation strip 402b. For example, the extending direction of the first isolation strip 402a in the second sub-isolation portion 402 may be perpendicular to the extending direction of the second isolation strip 402b.

[0076] In this case, the second sub-isolation section 402 in the isolation section 400 can divide the area enclosed by the first sub-isolation section 401 into a plurality of second pixel openings V2 in the first direction A1 and the second direction A2.

[0077] Furthermore, through the combined action of the first isolation strip 402a and the second isolation strip 402b in the second sub-isolation section 402, more second sub-pixel openings V2 can be divided within the same sub-pixel region P, allowing for the arrangement of a greater number of light-emitting devices 300 within the same sub-pixel region P. This further reduces the area of ​​the light-emitting layer in a single light-emitting device 300 projected onto the substrate 100. Consequently, the uniformity of the thickness of the fabricated light-emitting layer 302 can be further improved, thereby further reducing the probability of abnormal display on the display panel 000.

[0078] In this application, as Figure 4 As shown, the isolation pillars 400 in the display panel 000 can be evenly distributed on the side of the pixel definition layer 200 away from the substrate 100. In this case, the side of the first sub-isolation portion 401 of the isolation pillar 400 away from the substrate 100 can be flush with the side of the second sub-isolation portion 402 of the isolation pillar 400 away from the substrate 100.

[0079] For other possible implementations, please refer to [link / reference]. Figure 9 , Figure 9This is a partial structural cross-sectional view of a display panel provided in an embodiment of this application. The pixel definition layer 200 in the display panel 000 may further have a first auxiliary opening V3 located between adjacent first pixel openings V1 within the same sub-pixel region P. At least a portion of the second sub-isolation portion 402 in the isolation portion 400 may be located within the first auxiliary opening V3. In this case, the first sub-isolation portion 401 in the isolation pillar 400, facing away from the substrate 100, may protrude from the second sub-isolation portion 402 in the isolation pillar 400, facing away from the substrate 100.

[0080] It should be noted that the first sub-isolation portion 401 in the isolation pillar 400 can be used to isolate the light-emitting layers 302 of different light-emitting devices 300 in two adjacent different sub-pixel regions P, and the second sub-isolation portion 402 in the isolation pillar 400 can be used to isolate the light-emitting layers 302 of different light-emitting devices 300 in the same sub-pixel region P. The different light-emitting devices 300 in two adjacent different sub-pixel regions P can typically emit different types of light, and the light-emitting layers 302 of each light-emitting device 300 in the same sub-pixel region P can all emit the same type of light.

[0081] Here, since the different light-emitting devices 300 in two adjacent different sub-pixel regions P can usually be used to emit different types of light, when the first sub-isolation portion 401 in the isolation pillar 400 is away from the substrate 100 and the second sub-isolation portion 402 in the isolation pillar 400 is away from the substrate 100, the probability of color crossing phenomenon in the display panel 000 can be effectively reduced.

[0082] In the embodiments of this application, the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P can be separately arranged, or the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P can be connected. Therefore, the embodiments of this application will illustrate these two possible scenarios.

[0083] For the first possible scenario, please refer to... Figure 10 , Figure 10This is a partial cross-sectional view of another display panel provided in this application embodiment. The first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P are separately arranged. That is, within the same sub-pixel region P, the first electrodes 301 of each light-emitting device 300 are not directly connected, so that multiple separate first electrodes 301 can be arranged within the same sub-pixel region P. These first electrodes 301 can correspond one-to-one with multiple first pixel openings V1 located within this sub-pixel region P in the pixel definition layer 200, and the orthographic projection of each first electrode 301 on the substrate 100 can cover the orthographic projection of the corresponding first pixel opening V1 on the substrate 100.

[0084] In this configuration, the substrate 100 in the display panel 100 may have a first connection electrode 103. The first connection electrode 103 in the substrate 100 may be electrically connected to the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P. That is, the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P may overlap with the first connection electrode 103 in the substrate 100, thereby enabling the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P to be electrically connected via the first connection electrode 103.

[0085] It should be noted that, as Figure 3 and Figure 10 As shown, the substrate 100 in the display panel 000 may have a substrate 101 and data signal lines 102 distributed on the substrate 101. Since the first electrodes 301 of each light-emitting device 300 in the same sub-pixel region P are separately disposed, and the second sub-isolation portion 402 in the isolation portion 400 may be located in the sub-pixel region P, the overlap area between the first electrodes 301 of each light-emitting device 300 in the same sub-pixel region P and the data signal lines 102 in the substrate 100 can be kept small. This effectively reduces the parasitic capacitance generated between the first electrodes 301 and the data signal lines 102, thereby reducing crosstalk experienced by the first electrodes 301 and the data signal lines 102 in the same sub-pixel region P when transmitting data signals.

[0086] It should also be noted that, such as Figure 8As shown, when the second sub-isolation portion 402 in the isolation portion 400 includes a first isolation strip 402a and a second isolation strip 402b, the extension direction of the data signal line 102 in the substrate 100 can be parallel to the extension direction of the first isolation strip 402a, and the orthographic projection of the data signal line 102 on the substrate 101 can overlap with the orthographic projection of the first isolation strip 402a on the substrate 101. In this case, the parasitic capacitance generated between the first electrode 301 in the light-emitting device 300 and the data signal line 102 in the substrate 100 can be further reduced, thereby reducing the crosstalk experienced by the first electrode 301 and the data signal line 102 when transmitting data signals.

[0087] For the second optional implementation method, please refer to... Figure 11 , Figure 11 This is a partial cross-sectional view of another display panel provided in this application embodiment. Within the same sub-pixel region P, the first electrodes 301 of each light-emitting device 300 can be connected. That is, within the same sub-pixel region P, the first electrodes 301 of two adjacent light-emitting devices 300 can be directly connected together. In this case, an electrode structure with connected distributions at various positions is distributed within the same sub-pixel region P, and the portion of this electrode structure that protrudes through the first pixel opening V1 is the first electrode 201 of the corresponding light-emitting device 200.

[0088] In this application, as Figure 10 and Figure 11 As shown, the substrate 100 may include: a substrate 101, a pixel driving circuit 104, a first planarization layer 105, a second connecting electrode 106, and a second planarization layer 107.

[0089] The pixel driving circuit 104 in the substrate 100 can be located on one side of the substrate 101. Here, the pixel driving circuit 104 can apply a driving signal to the first electrode 301 of the light-emitting device 300, so that the light-emitting layer 302 in the first pixel opening V1 corresponding to the first electrode 301 can emit light outward.

[0090] The first planarization layer 105 in the substrate 100 can be located on the side of the pixel driving circuit 104 away from the substrate 101. Here, since the first planarization layer 105 has good flatness, the flatness of the side of the pixel driving circuit 104 away from the substrate 101 can be guaranteed to be good.

[0091] The second connection electrode 106 in the substrate 100 may be located on the side of the first planarization layer 105 away from the substrate 101, and the second connection electrode 106 may be electrically connected to the pixel driving circuit 104.

[0092] The second planarization layer 107 in the substrate 100 can be located on the side of the second connection electrode 106 facing away from the substrate 101. The pixel definition layer 200 and the light-emitting device 300 in the display panel 000 can both be located on the side of the second planarization layer 107 facing away from the substrate 101, and the first electrode 301 of each light-emitting device 300 within the same sub-pixel region P can be electrically connected to the second connection electrode 106. That is, the first electrode 301 of each light-emitting device 300 within the same sub-pixel region P can be electrically connected to the pixel driving circuit 104 through the second connection electrode 106, so that the pixel driving circuit 104 can apply a driving signal to the first electrode 301 of the light-emitting device 300.

[0093] It should be noted that, as Figure 10 As shown, when the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P are separately configured, the first connecting electrode 103 for connecting the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P and the second connecting electrode 104 for connecting each light-emitting device 300 within this sub-pixel region P to the same pixel region circuit 104 are integrated into one structure. That is, through this integrated structure, the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P can be electrically connected together, and each light-emitting device 300 within this sub-pixel region P can be connected to the same pixel region circuit 104, thereby allowing the pixel driving circuit 104 to apply driving signals to the first electrodes 301 of each light-emitting device 300 through this integrated structure.

[0094] It should also be noted that, such as Figure 11 As shown, when the first electrodes 301 of each light-emitting device 300 in the same sub-pixel region P can be connected, the first electrodes 301 of each light-emitting device 300 in the same sub-pixel region P can be electrically connected to the pixel driving circuit 104 through the second connecting electrode 106, so that the pixel driving circuit 104 can apply a driving signal to the first electrodes 301 of each light-emitting device 300 through the second connecting electrode 106.

[0095] In the embodiments of this application, please refer to Figure 10 and Figure 11 The second planarization layer 107 in the substrate 100 may have a first connection hole 107a. Here, the first electrode 301 in each light-emitting device 300 can be electrically connected to the second connection electrode 106 through the first connection hole 107a.

[0096] In this configuration, the orthographic projection of the first connection hole 107a in the second planarization layer 107 onto the substrate 101 may not coincide with the orthographic projection of the light-emitting layer 302 in the light-emitting device 300 onto the substrate 101. In this case, it can be ensured that there is no second connection electrode 106 on the side of the first electrode 301 located within the first pixel opening V1 in the display panel 000 near the substrate 100. This ensures good flatness of the first electrode 301, thereby reducing the probability of color separation in the display panel 000.

[0097] In the embodiments of this application, such as Figure 11 As shown, the isolation portion 400 in the display panel 000 may include: a first isolation layer 400a, an isolation pillar 400b, and a second isolation layer 400c stacked together. The first isolation layer 400a may be closer to the substrate 100 than the second isolation layer 400c. For example, the width of the isolation portion 400 along its extension direction parallel to the substrate 100 may be greater than or equal to 3 micrometers. Here, the isolation pillar 400b may be conductive. For example, the material of the isolation pillar 400b may include metal.

[0098] In this configuration, the second electrodes 303 of two adjacent light-emitting devices 300 within the same sub-pixel region P can overlap with the isolation pillars 400b in the second sub-isolation section 402, thereby enabling electrical connection between the second electrodes 303 of two adjacent light-emitting devices 300 within the same sub-pixel region P via the isolation pillars 400b in the second sub-isolation section 402. Similarly, the second electrodes 303 of two adjacent light-emitting devices 300 within different sub-pixel regions P can overlap with the isolation pillars 400b in the first sub-isolation section 401, thereby enabling electrical connection between the second electrodes 303 of two adjacent light-emitting devices 300 within different sub-pixel regions P via the isolation pillars 400b in the first sub-isolation section 401.

[0099] Specifically, the orthographic projection of the isolation pillar 400b in the isolation section 400 onto the substrate 100 can lie within the orthographic projection of the first isolation layer 400a onto the substrate 100, and can also lie within the orthographic projection of the second isolation layer 400c onto the substrate 100. The outer boundary of the orthographic projection of the isolation pillar 400b in the isolation section 400 onto the substrate 100 can be non-coincident with the outer boundary of the orthographic projection of the first isolation layer 400a onto the substrate 100, and can also be non-coincident with the outer boundary of the orthographic projection of the second isolation layer 400c onto the substrate 100. This ensures good overlap between the second electrode 303 in each light-emitting device 300 within the sub-pixel region P and the isolation pillar 400b in the isolation section 400. Furthermore, it also ensures good isolation of the light-emitting layer 302 in each different light-emitting device 300 within the same sub-pixel region P by the isolation pillar 400b. It should be noted that, along the extension direction parallel to the substrate 100, the width of the first isolation layer 400c in the isolation portion 400 can be greater than the width of the second isolation layer 400c.

[0100] It should be noted that, as Figure 11 As shown, when the pixel definition layer 200 has a first auxiliary opening V3 located between adjacent first pixel openings V1 within the same sub-pixel region P, and the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P are connected, the material of the first isolation layer 400c in the isolation portion 400 can be an inorganic insulating material. In this case, it can be ensured that the isolation portion 400 will not experience a short circuit with the first electrodes 301 of each light-emitting device 300 within the same sub-pixel region P.

[0101] Please refer to the following in this application: Figure 12 , Figure 12 This is a partial cross-sectional view of another display panel provided in this application embodiment. The display panel 000 may further include an encapsulation layer 500 for encapsulating the light-emitting device 300. The encapsulation layer 500 may include a first inorganic encapsulation layer 501, an organic encapsulation layer 502, and a second inorganic encapsulation layer 503 stacked together. Here, the first inorganic encapsulation layer 501 in the encapsulation layer 500 may be closer to the substrate 100 than the second inorganic encapsulation layer 503. The organic encapsulation layer 502 and the second inorganic encapsulation layer 503 in the encapsulation layer 500 may be continuously distributed film layer structures. Here, a continuously distributed film layer structure means that the film layer structure is continuously connected at all positions, and there are no structures such as slots or openings in the film layer structure.

[0102] Since the organic encapsulation layer 502 is made of organic materials, it readily absorbs moisture from the external environment. In contrast, the first inorganic encapsulation layer 501 and the second inorganic encapsulation layer 503 are both made of inorganic materials, which can effectively isolate and seal against moisture from the external environment. For example, the inorganic encapsulation layer material can be silicon dioxide, silicon nitride, or other materials with insulating and moisture- and oxygen-barrier properties. It should be noted that this application does not impose specific limitations on these materials.

[0103] In the embodiments of this application, such as Figure 12 As shown, the first inorganic encapsulation layer 501 in the encapsulation layer 500 may include a plurality of separately disposed encapsulation protection portions 501a. Each encapsulation protection portion 501a may correspond to a plurality of second pixel openings V2, and at least a portion of the encapsulation protection portion 501a may be located within the second pixel opening V2 and contact the side of the second electrode 303 in the corresponding light-emitting device 300 facing away from the substrate 100. Thus, the encapsulation protection portion 501a can encapsulate and protect the corresponding light-emitting unit 300, preventing it from being corroded by water and oxygen in the air. Furthermore, during the fabrication of other light-emitting units 300, the encapsulation protection portion 501a disposed on the fabricated light-emitting unit 300 can effectively prevent solvents from corroding the fabricated light-emitting unit 300, thereby ensuring the reliability of the display panel 000 and resulting in a better display effect.

[0104] In summary, the display panel provided in this application includes: a substrate, a pixel definition layer, light-emitting devices, and an isolation portion. The isolation portion can separate the light-emitting layers in different light-emitting devices located in the same sub-pixel region. Thus, during the fabrication of the display panel, it is no longer necessary to fabricate a continuous light-emitting layer within a single, large sub-pixel region. Instead, through the isolation effect of the isolation portion, at least two separately arranged light-emitting layers corresponding one-to-one with at least two second pixel openings can be fabricated within a single sub-pixel region, and these light-emitting layers belong to different light-emitting devices. This ensures that the area of ​​the orthogonal projection of the light-emitting layer in a single light-emitting device within the same sub-pixel region is small, effectively improving the uniformity of the thickness of the fabricated light-emitting layers, thereby reducing the probability of abnormal display of the display panel and improving the reliability of the display panel.

[0105] This application also provides a display device. The display device can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. The display device may include a power supply component (not shown in the figure) and a display panel 000. The display panel can be the display panel described in the above embodiments. The power supply component is connected to the display panel 000 and is used to supply power to the display panel 000 so that the display panel 000 can display images.

[0106] 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.

[0107] 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.

[0108] 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 multiple sub-pixel regions arranged in an array; the display panel includes: a substrate (100), a pixel definition layer (200), a light-emitting device (300), and an isolation portion (400); The pixel definition layer (200) is located on one side of the substrate (100), and the pixel definition layer (200) has a plurality of first pixel openings (V1), at least two adjacent first pixel openings (V1) are located in the same sub-pixel region; The number of light-emitting devices (300) is multiple, and the multiple light-emitting devices (300) correspond to the multiple first pixel openings (V1). At least a portion of one light-emitting device (300) is located in the corresponding first pixel opening (V1), and the light-emitting device (300) includes: a first electrode (301), a light-emitting layer (302), and a second electrode (303) stacked together. The first electrode (301) is closer to the substrate (100) than the second electrode (303). The isolation portion (400) is located on the side of the pixel definition layer (200) away from the substrate (100). The isolation portion (400) has a plurality of second pixel openings (V2) corresponding to a plurality of first pixel openings (V1). The second pixel openings (V2) are connected to the corresponding first pixel openings (V1). In this sub-pixel region, the first electrodes (301) of each of the light-emitting devices (300) are electrically connected, and the second electrodes (302) of each of the light-emitting devices (300) in the same sub-pixel region are electrically connected; the isolation part (400) is used to isolate the light-emitting layers (302) in different light-emitting devices (300) in the same sub-pixel region.

2. The display panel according to claim 1, characterized in that, The isolation portion (400) is conductive. The isolation portion (400) includes: a first sub-isolation portion (401) disposed around the sub-pixel region, and a second sub-isolation portion (402) located within the sub-pixel region. The first sub-isolation portion (401) and the second sub-isolation portion (402) are connected, and the first sub-isolation portion (401) and the second sub-isolation portion (402) can form at least two second pixel openings (V2). In this sub-pixel region, the second electrodes (302) of two adjacent light-emitting devices (300) are electrically connected through the second sub-isolation portion (402).

3. The display panel according to claim 2, characterized in that, The width of the sub-pixel region in the first direction (A1) is greater than the width in the second direction (A2), and the first direction (A1) and the second direction (A2) intersect. The second sub-isolation portion (402) is strip-shaped, and the extension direction of the second sub-isolation portion (402) is parallel to the second direction (A2).

4. The display panel according to claim 3, characterized in that, Within the same sub-pixel region, the number of second sub-isolation portions (402) is at least one, and the number of second pixel openings (V2) is one more than the number of second sub-isolation portions (402).

5. The display panel according to claim 2, characterized in that, The second sub-isolation section (402) includes: a first isolation strip (402a) and a second isolation strip (402b), wherein the extension direction of the first isolation strip (402a) intersects the extension direction of the second isolation strip (402b).

6. The display panel according to claim 5, characterized in that, The substrate (100) has a substrate (101) and data signal lines (102) distributed on the substrate (101). The extension direction of the data signal lines (102) is parallel to the extension direction of the first isolation strip (402a), and the orthographic projection of the data signal lines (102) on the substrate (101) overlaps with the orthographic projection of the first isolation strip (402a) on the substrate (101).

7. The display panel according to any one of claims 2 to 6, characterized in that, The pixel definition layer (200) also has a first auxiliary opening (V3) located between adjacent first pixel openings (V1) within the same sub-pixel region; At least a portion of the second sub-isolation section (402) is located within the first auxiliary opening (V3).

8. The display panel according to any one of claims 2 to 6, characterized in that, The second electrodes (302) of different light-emitting devices (300) in different sub-pixel regions are electrically connected through the first sub-isolation section (401).

9. The display panel according to any one of claims 1 to 6, characterized in that, The first electrodes (301) of each of the light-emitting devices (300) in the same sub-pixel region are separately disposed, and the substrate (100) has a first connecting electrode (103) which is electrically connected to the first electrodes (301) of each of the light-emitting devices (300) in the same sub-pixel region. Alternatively, the first electrodes (301) of each of the light-emitting devices (300) within the same sub-pixel region are connected.

10. The display panel according to any one of claims 1 to 6, characterized in that, The substrate (100) includes: a substrate (101), a pixel driving circuit (104), a first planarization layer (105), a second connecting electrode (106), and a second planarization layer (107); The pixel driving circuit (104) is located on one side of the substrate (101); The first planarization layer (105) is located on the side of the pixel driving circuit (104) opposite to the substrate (101); The second connection electrode (106) is located on the side of the first planarization layer (105) away from the substrate (101), and the second connection electrode (106) is electrically connected to the pixel driving circuit (104); The second planarization layer (107) is located on the side of the second connecting electrode (106) away from the substrate (101). The pixel definition layer (200) and the light-emitting device (300) are both located on the side of the second planarization layer (107) away from the substrate (101). The first electrode (301) of each of the light-emitting devices (300) in the same sub-pixel region is electrically connected to the second connecting electrode (106).

11. The display panel according to claim 10, characterized in that, The second planarization layer (107) has a first connection hole (107a), and the first electrode (301) is electrically connected to the second connection electrode (106) through the first connection hole (107a); The orthographic projection of the first connecting hole (107a) on the substrate (101) does not coincide with the orthographic projection of the light-emitting layer (302) on the substrate (101).

12. The display panel according to any one of claims 1 to 6, characterized in that, The isolation portion (400) includes: a first isolation layer (400a), an isolation pillar (400b), and a second isolation layer (400c) stacked together, wherein the first isolation layer (400a) is closer to the substrate (100) than the second isolation layer (400c), and the isolation pillar (400b) is conductive; Wherein, the orthographic projection of the isolation pillar (400b) on the substrate (100) is located within the orthographic projection of the first isolation layer (400a) on the substrate (100), and is located within the orthographic projection of the second isolation layer (400c) on the substrate (100); the outer boundary of the orthographic projection of the isolation pillar (400b) on the substrate (100) does not coincide with the outer boundary of the orthographic projection of the first isolation layer (400a) on the substrate (100), and does not coincide with the outer boundary of the orthographic projection of the second isolation layer (400c) on the substrate (100).

13. The display panel according to any one of claims 1 to 6, characterized in that, The display panel further includes an encapsulation layer (500) for encapsulating the light-emitting device (300); the encapsulation layer (500) includes a first inorganic encapsulation layer (501), an organic encapsulation layer (502), and a second inorganic encapsulation layer (503) stacked together, wherein the first inorganic encapsulation layer (501) is closer to the substrate (100) than the second inorganic encapsulation layer (503).

14. The display panel according to claim 13, characterized in that, The first inorganic encapsulation layer (501) includes: a plurality of separately disposed encapsulation protection portions (501a), the plurality of encapsulation protection portions (501a) corresponding to the plurality of second pixel openings (V2), at least a portion of the encapsulation protection portions (501a) being located within the second pixel openings (V2) and in contact with the side of the second electrode (302) in the corresponding light-emitting device (300) away from the substrate (100).

15. The display panel according to any one of claims 1 to 6, characterized in that, The light-emitting layers (302) of each of the light-emitting devices (300) within the same sub-pixel region are all used to emit the same type of light.

16. A display device, characterized in that, include: A power supply component, and a display panel according to any one of claims 1-15, wherein the power supply component is used to supply power to the display panel.

Images