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 has multiple sub-pixel regions and includes: a driving backplane, a first electrode layer, a pixel definition layer, an organic light-emitting layer, and a second electrode layer. The first electrode layer has multiple separately disposed first electrodes, each located within a multiple sub-pixel region, and at least some of the first electrodes are electrically connected to the driving backplane. Each first electrode includes: multiple sub-electrodes arranged in an array, and connecting segments for connecting adjacent sub-electrodes. The orthographic projection of a sub-pixel opening onto the driving backplane lies within the orthographic projection of the corresponding sub-electrode onto the driving backplane. When a short circuit occurs between one or more sub-electrodes and the second electrode layer, a laser cutting process can be used to cut the connecting segments around the short-circuited sub-electrode, allowing other sub-electrodes to normally apply voltage and drive the organic light-emitting layer to emit light, thereby achieving the effect of repairing dark spots.

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 current-driven organic light-emitting devices. OLED display panels have advantages such as small thickness, self-illumination, flexibility, and high luminous efficiency, and are widely used in the display field.

[0003] An OLED display panel typically includes a driving backplane and multiple light-emitting devices located on the same side of the driving backplane. The light-emitting devices may include a first electrode, an organic light-emitting layer, and a second electrode stacked together. By applying corresponding voltages to the first and second electrodes respectively, the organic light-emitting layer located between them can emit light, thereby enabling the OLED display panel to display an image.

[0004] However, short circuits can easily occur between the first and second electrodes, preventing the organic light-emitting layer from emitting light properly and resulting in dark spots on the OLED display panel. When the size of the first electrode is large, the dark spots on the OLED display panel are more noticeable, leading to a lower yield rate. Utility Model Content

[0005] This application provides a display panel and display device that can solve the problems of dark spot defects and low yield in OLED display panels. The technical solution is as follows:

[0006] On one hand, a display panel is provided, the display panel having multiple sub-pixel regions; including: a driving backplane, a first electrode layer, a pixel definition layer, an organic light-emitting layer, and a second electrode layer;

[0007] The first electrode layer is located on one side of the driving backplate. The first electrode layer has a plurality of separately disposed first electrodes, which are respectively located in the plurality of sub-pixel regions, and at least a portion of the first electrodes are electrically connected to the driving backplate. The first electrode includes: a plurality of sub-electrodes arranged in an array, and a connecting segment for connecting adjacent sub-electrodes.

[0008] The pixel definition layer is located on the side of the first electrode layer away from the driving backplate. A portion of the pixel definition layer located within the same sub-pixel region has multiple sub-pixel openings. Within the same sub-pixel region, the multiple sub-pixel openings correspond to the multiple sub-electrodes in the first electrode. The orthographic projection of the sub-pixel openings on the driving backplate is located within the orthographic projection of the corresponding sub-electrode on the driving backplate.

[0009] The organic light-emitting layer is located on the side of the pixel definition layer opposite to the driving backplate, and the organic light-emitting layer passes through the sub-pixel opening and contacts the sub-electrode;

[0010] The second electrode layer is located on the side of the organic light-emitting layer opposite to the driving backplate.

[0011] Optionally, the first electrode has multiple hollow areas, and at least two of the sub-electrodes and at least two of the connecting segments in the same first electrode are used to form one of the hollow areas.

[0012] Optionally, in the same first electrode, the sum of the areas of the orthographic projections of the plurality of sub-electrodes on the drive back plate is greater than the sum of the areas of the orthographic projections of the plurality of connecting segments on the drive back plate, and is also greater than the sum of the areas of the orthographic projections of the plurality of hollow areas on the drive back plate.

[0013] Optionally, for the plurality of sub-electrodes in the same first electrode, the plurality of sub-electrodes are arranged in multiple columns along the first direction and in multiple rows along the second direction;

[0014] For the same first electrode, the multiple connection segments include: multiple first connection segments and multiple second connection segments; the first connection segment connects two adjacent sub-electrodes in the first direction, and the second connection segment connects two adjacent sub-electrodes in the second direction.

[0015] Optionally, for either the first connecting segment or the second connecting segment, the width of the connecting segment is smaller than the width of the sub-electrode in the direction perpendicular to the extension of the connecting segment.

[0016] Optionally, for the plurality of sub-electrodes in the same first electrode, the plurality of sub-electrodes are arranged in multiple columns along the first direction and in multiple rows along the second direction;

[0017] For the multiple connecting segments in the same first electrode, the multiple connecting segments include: multiple third connecting segments and multiple fourth connecting segments; the multiple third connecting segments and the multiple fourth connecting segments correspond to each other, the extension direction of the third connecting segment intersects the extension direction of the corresponding fourth connecting segment, and the third connecting segment and the corresponding fourth connecting segment are interconnected; the extension direction of the third connecting segment and the extension direction of the fourth connecting segment both intersect the first direction and both intersect the second direction;

[0018] The two ends of the third connecting segment are respectively connected to two adjacent sub-electrodes in the extending direction of the third connecting segment, and the two ends of the fourth connecting segment are respectively connected to two adjacent sub-electrodes in the extending direction of the fourth connecting segment.

[0019] Optionally, the width of the third connecting segment is less than the distance between the two sub-electrodes distributed on both sides of the third connecting segment; the width of the fourth connecting segment is less than the distance between the two sub-electrodes distributed on both sides of the fourth connecting segment.

[0020] Optionally, for the plurality of sub-electrodes in the same first electrode, the orthographic projections of each sub-electrode on the drive backplate have the same shape and the same size.

[0021] Optionally, the orthographic projection of the sub-electrode onto the drive backplate is rectangular, triangular, or circular.

[0022] Optionally, the sub-pixel region includes a central sub-region and at least one peripheral sub-region distributed around the central sub-region;

[0023] Specifically, within the same sub-pixel region, the area of ​​the orthographic projection of the sub-electrode distributed in the central sub-region onto the driving backplate is smaller than the area of ​​the orthographic projection of the sub-electrode distributed in the peripheral sub-region onto the driving backplate.

[0024] Optionally, there are multiple peripheral sub-regions. For two adjacent peripheral sub-regions, the two peripheral sub-regions are a first peripheral sub-region and a second peripheral sub-region, and the first peripheral sub-region is closer to the central sub-region than the second peripheral sub-region.

[0025] The number of sub-electrodes in the first peripheral sub-region is equal to the number of sub-electrodes in the second peripheral sub-region, and the area of ​​the orthographic projection of the sub-electrodes in the first peripheral sub-region onto the drive backplate is smaller than the area of ​​the orthographic projection of the sub-electrodes in the second peripheral sub-region onto the drive backplate.

[0026] Optionally, the driving backplane includes: a substrate, a planarization layer, and multiple pixel driving circuits;

[0027] The plurality of pixel driving circuits are located on one side of the substrate;

[0028] The planarization layer is located on the side of the plurality of pixel driving circuits opposite to the substrate, and the planarization layer has a plurality of overlapping holes;

[0029] The first electrode layer is located on the side of the planarization layer opposite to the driving backplate. The plurality of first electrodes correspond to the plurality of pixel driving circuits. The first electrode is electrically connected to the corresponding pixel driving circuit through at least one of the overlapping holes.

[0030] Wherein, the orthographic projection of the overlapping hole on the substrate does not overlap with the orthographic projection of the sub-pixel opening on the substrate.

[0031] Optionally, the driving backplane includes an adapter electrode located between the pixel driving circuit and the planarization layer, and the adapter electrode is electrically connected to the pixel driving circuit, and the same adapter electrode is electrically connected to a first electrode through at least two of the overlapping holes;

[0032] Among them, at least two overlapping holes corresponding to the same first electrode are distributed around the sub-pixel region where the first electrode is located.

[0033] Optionally, the plurality of sub-pixel regions include: a plurality of red sub-pixel regions, a plurality of green sub-pixel regions, and a plurality of blue sub-pixel regions; the portion of the organic light-emitting layer located in the red sub-pixel regions is used to emit red light, the portion of the organic light-emitting layer located in the green sub-pixel regions is used to emit green light, and the portion of the organic light-emitting layer located in the blue sub-pixel regions is used to emit blue light;

[0034] Wherein, the area of ​​the blue sub-pixel region projected onto the driving backplane is greater than the area of ​​the red sub-pixel region projected onto the driving backplane, and is also greater than the area of ​​the green sub-pixel region projected onto the driving backplane; the number of sub-electrodes distributed in the blue sub-pixel region is greater than the number of sub-electrodes distributed in the red sub-pixel region, and is also greater than the number of sub-electrodes distributed in the green sub-pixel region.

[0035] On the other hand, a display device is provided, including a driver chip and a display panel as described above, wherein the display panel is electrically connected to the driver chip.

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

[0037] The first electrode includes multiple sub-electrodes arranged in an array and connecting segments for connecting adjacent sub-electrodes. Multiple sub-electrodes within the same first electrode can be electrically connected to each other via these connecting segments. When a short circuit occurs between one or more sub-electrodes and the second electrode layer, a laser cutting process can be used to cut the connecting segments around the short-circuited sub-electrode, disconnecting other sub-electrodes from the short-circuited one. This allows the other sub-electrodes to receive voltage normally, enabling the organic light-emitting layer within the corresponding sub-pixel opening to emit light normally, thus repairing dark spots and improving product yield. Furthermore, since only the short-circuited sub-electrode cannot drive the organic light-emitting layer to emit light, the light loss after repairing dark spots is minimal, ensuring a good display effect for 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 structural diagram of a sub-pixel region in a display panel provided by related technologies;

[0040] Figure 2 yes Figure 1 The diagram shows the film structure of the sub-pixel region at A-A'.

[0041] Figure 3 yes Figure 1 The diagram shows the film structure of the sub-pixel region at A-A'.

[0042] Figure 4 yes Figure 1 The diagram shows the film structure of the sub-pixel region at A-A'.

[0043] Figure 5 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0044] Figure 6 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0045] Figure 7 yes Figure 6 A schematic diagram of the film structure at B-B' in the sub-pixel region is shown;

[0046] Figure 8 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0047] Figure 9 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0048] Figure 10 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0049] Figure 11 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0050] Figure 12 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0051] Figure 13 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0052] Figure 14 This is a schematic diagram of the film structure of a sub-pixel region provided in an embodiment of this application;

[0053] Figure 15 This is a schematic diagram of the structure of a sub-pixel region provided in an embodiment of this application;

[0054] Figure 16 yes Figure 15 A schematic diagram of the film structure at C-C' of the sub-pixel region is shown;

[0055] Figure 17 This is a schematic diagram of the structure of the sub-pixel region provided in the embodiments of this application. Detailed Implementation

[0056] 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.

[0057] It should be noted that in the structural schematic diagram of the sub-pixel region provided in the embodiments of this application, in order to clearly illustrate the structure of the first electrode, only the driving backplate and the first electrode are shown in the figure, and the pixel definition layer, organic light-emitting layer and second electrode layer are not shown.

[0058] In related technologies, OLED display panels can have multiple sub-pixel regions K. Figure 1 A sub-pixel region K is shown. Figure 2 The film structure of sub-pixel region K at A-A' is shown. The OLED display panel may include: a driving backplate 10, and multiple light-emitting devices 20 located on the same side of the driving backplate 10. The multiple light-emitting devices 20 may be located in multiple sub-pixel regions K respectively.

[0059] See also Figure 2The light-emitting device 20 includes a first electrode 21, an organic light-emitting layer 22, and a second electrode 23 stacked together. The first electrode 21 can be an anode, and the second electrode 23 can be a cathode. Applying a corresponding voltage to the first electrode 21 and the second electrode 23 can cause the organic light-emitting layer 22 located between them to emit light, thereby enabling the OLED display panel to display images.

[0060] However, a short circuit can easily occur between the first electrode 21 and the second electrode 23, causing the light-emitting device 20 to fail to emit light normally, resulting in dark spots on the OLED display panel.

[0061] It should be noted that there are many reasons for the formation of dark spots.

[0062] For example, such as Figure 3 As shown, during the deposition of the organic light-emitting layer 22 using a photomask, due to the large size of the photomask, the portion of the photomask near the center of the first electrode 21 collapses, causing the photomask to scrape against the film layer and resulting in the loss of part of the organic light-emitting layer 22; or, the film layer is not accurately aligned during deposition, resulting in the loss of the organic light-emitting layer 22 between the first electrode 21 and the second electrode 23. Both of these situations will cause direct contact between the first electrode 21 and the second electrode 23, resulting in a short circuit and causing dark spots.

[0063] For example, such as Figure 4 As shown, during the process of vapor deposition of the organic light-emitting layer 22, impurities in the vapor deposition equipment and the external environment may form particles on the organic light-emitting layer 22, resulting in a smaller thickness of the organic light-emitting layer 22 at the particles. That is, the distance between the second electrode 23 and the first electrode 21 is smaller, and the second electrode 23 is prone to forming spikes at the particles. Therefore, after applying voltage, it is easy to cause breakdown between the first electrode 21 and the second electrode 23, resulting in a short circuit and causing dark spots.

[0064] For OLED display panels used in scenarios such as splicing displays or outdoor displays, the first electrode 21 in the OLED display panel is relatively large. A short circuit between the first electrode 21 and the second electrode 23 will cause the OLED display panel to produce more obvious dark spots, resulting in a lower yield of the OLED display panel.

[0065] This application provides a display panel that can solve the problems of dark spot defects and low yield in OLED display panels.

[0066] Please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. The display panel 000 has multiple sub-pixel regions K, and the multiple sub-pixel regions K can be arranged in an array.

[0067] Combination Figure 6 and Figure 7 , Figure 6 This illustrates the specific structure within a sub-pixel region K. Figure 7 The film structure of sub-pixel region K at B-B' is shown. The display panel 000 may include: a driving backplate 100, a first electrode layer 200, a pixel definition layer 300, an organic light-emitting layer 400, and a second electrode layer 500.

[0068] The first electrode layer 200 may be located on one side of the driving backplate 100. The first electrode layer 200 may have a plurality of separately disposed first electrodes 210, and the plurality of first electrodes 210 may be located in a plurality of sub-pixel regions K respectively. At least a portion of the first electrodes 210 may be electrically connected to the driving backplate 100, so that the driving backplate 100 may apply voltage to the first electrodes 210.

[0069] The first electrode 210 may include a plurality of sub-electrodes 211 arranged in an array, and a connecting segment L for connecting adjacent sub-electrodes 211. In the same first electrode 210, the connecting segment L can connect the plurality of sub-electrodes 211 together, so that the plurality of sub-electrodes 211 can be loaded with the same voltage through the connection of the connecting segment L.

[0070] In this case, the connecting segment L and the sub-electrode 211 can be set in the same layer and made of the same material, so multiple connecting segments L and multiple sub-electrodes 211 can be formed by the same patterning process.

[0071] The pixel definition layer 300 can be located on the side of the first electrode layer 200 away from the driving backplate 100, and the portion of the pixel definition layer 300 located in the same sub-pixel region K can have multiple sub-pixel openings U.

[0072] Within the same sub-pixel region K, multiple sub-pixel openings U correspond to multiple sub-electrodes 211 in the first electrode 210, and the orthographic projection of the sub-pixel opening U on the driving backplate 100 can lie within the orthographic projection of the corresponding sub-electrode 211 on the driving backplate 100. Since the edges of the etched sub-electrodes 211 are uneven, the pixel definition layer 300 can cover the edges of the sub-electrodes 211, thereby preventing puncture and leakage between the edge portion of the sub-electrodes 211 and the subsequently formed second electrode layer 500.

[0073] The organic light-emitting layer 400 can be located on the side of the pixel definition layer 300 opposite to the driving backplate 100, and the organic light-emitting layer 400 can pass through the sub-pixel opening U and contact the sub-electrode 211. The second electrode layer 500 can be located on the side of the organic light-emitting layer 400 opposite to the driving backplate 100, that is, the second electrode layer 500 can contact the organic light-emitting layer 400. In this way, the organic light-emitting layer 400 located in the sub-pixel opening U can contact the sub-electrode 211 and the second electrode layer 500 respectively.

[0074] The first electrode layer 200 can be an anode layer, and the second electrode layer 500 can be a cathode layer. By applying corresponding voltages to the first electrode layer 200 and the second electrode layer 500 respectively, a portion of the organic light-emitting layer 400 located in the sub-pixel opening U1 can emit light, thereby enabling the display panel 000 to display an image.

[0075] It should be noted that short circuits are prone to occur between the first electrode layer 200 and the second electrode layer 500. In the same first electrode 210, multiple sub-electrodes 211 are electrically connected to each other through connecting segments L. When a short circuit occurs between one or more sub-electrodes 211 and the second electrode layer 500, the entire first electrode 210 cannot drive the organic light-emitting layer 400 to emit light. Due to the large size of the first electrode 210, the dark spots generated on the display panel 000 are also more noticeable.

[0076] In this case, such as Figure 6 and Figure 7 As shown, a laser cutting process can be used to cut the connecting segment L around the short-circuited sub-electrode 211, disconnecting other sub-electrodes 211 from the short-circuited one. This allows the other sub-electrodes 211 to be normally charged, enabling the organic light-emitting layer 400 within the corresponding sub-pixel opening U to emit light normally, thus repairing dark spots and improving product yield. Furthermore, since only the short-circuited sub-electrode 211 cannot drive the organic light-emitting layer 400 to emit light, the light loss after repairing dark spots is minimal, ensuring a good display effect for the display panel 000.

[0077] It should also be noted that the orthographic projection of the connecting segment L on the driving backplate 100 does not overlap with the orthographic projection of the sub-pixel opening U on the driving backplate 100. That is, the connecting segment L can be covered by the pixel definition layer 300. Thus, when the connecting segment L is cut using a laser cutting process, the portion of the organic light-emitting layer 400 located within the sub-pixel opening U will not be damaged, thereby ensuring the light-emitting effect of the organic light-emitting layer 400.

[0078] In summary, this application provides a display panel. The first electrode includes multiple sub-electrodes arranged in an array and connecting segments for connecting adjacent sub-electrodes. Multiple sub-electrodes within the same first electrode can be electrically connected to each other via the connecting segments. When a short circuit occurs between one or more sub-electrodes and the second electrode layer, a laser cutting process can be used to cut the connecting segments around the short-circuited sub-electrode, disconnecting other sub-electrodes from the short-circuited sub-electrode. This allows other sub-electrodes to receive voltage normally, enabling the organic light-emitting layer within the corresponding sub-pixel openings to emit light normally, thus achieving the effect of repairing dark spots and improving product yield. Furthermore, since only the short-circuited sub-electrode cannot drive the organic light-emitting layer to emit light, the light loss after repairing dark spots is minimal, ensuring a good display effect for the display panel.

[0079] It should be noted that the first electrode 210 may have multiple hollow areas G. In the same first electrode 210, at least two sub-electrodes 211 and at least two connecting segments L are used to form a hollow area G.

[0080] For example, such as Figure 6 As shown, within the same first electrode 210, four sub-electrodes 211 and four connecting segments L are used to form a hollow area G. As another example, such as... Figure 13 As shown, in the same first electrode 210, two sub-electrodes 211 and two connecting segments L are used to form a hollow area G.

[0081] In this case, the connecting segment L can be located between two adjacent hollow areas G. In this case, there is no sub-electrode 211 or connecting segment L in the hollow areas G on both sides of the connecting segment L. This makes it easier to laser cut the connecting segment L, thereby avoiding damage to the sub-electrode 211 and other connecting segments L.

[0082] It should also be noted that, within the same first electrode 210, the sum of the areas of the orthographic projections of multiple sub-electrodes 211 onto the driving backplate 100 can be greater than the sum of the areas of the orthographic projections of multiple connecting segments L onto the driving backplate 100, and can also be greater than the sum of the areas of the orthographic projections of multiple hollow areas G onto the driving backplate 100. This ensures that the sum of the orthographic projection areas of multiple sub-electrodes 211 onto the driving backplate 100 is relatively large, thereby resulting in a larger light-emitting area of ​​the organic light-emitting layer 400, and ultimately ensuring better light-emitting performance of the display panel 000.

[0083] The area of ​​the orthographic projection of the sub-pixel region K onto the driving backplate 100 can be approximately equal to the area of ​​the orthographic projection of the first electrode 210 located within the sub-pixel region K onto the driving backplate 100. In other words, the area of ​​the orthographic projection of the sub-pixel region K onto the driving backplate 100 can be approximately equal to the sum of the areas of the orthographic projections of the multiple sub-electrodes 211, the multiple connecting segments L, and the multiple hollow areas G onto the driving backplate 100.

[0084] In one possible implementation, the sum of the areas of the orthographic projections of multiple sub-electrodes 211 on the driving backplate 100 within the same first electrode 210 can be greater than the sum of the areas of the orthographic projections of multiple connecting segments L and multiple cutout areas G on the driving backplate 100. That is, for a sub-pixel region K and the first electrode 210 located within sub-pixel region K, the sum of the areas of the orthographic projections of multiple sub-electrodes 211 in the first electrode 210 on the driving backplate 100 can be greater than 0.5 times the area of ​​the orthographic projection of sub-pixel region K on the driving backplate 100.

[0085] In this way, it can be further ensured that the sum of the areas of the orthogonal projections of the multiple sub-electrodes 211 on the driving backplate 100 is large, thereby further ensuring that the light-emitting area of ​​the organic light-emitting layer 400 is large, so that the display panel 000 can have a better light-emitting effect.

[0086] It should also be noted that in the same first electrode 210, when the distance between two adjacent sub-electrodes 211 is small, voltage breakdown and series connection are likely to occur between the two adjacent sub-electrodes 211. Therefore, when a short circuit occurs between one of the sub-electrodes 211 and the second electrode layer 500, the connection between the two sub-electrodes 211 cannot be cut off by cutting off the connection segment L, and the dark spot cannot be effectively repaired.

[0087] Therefore, it is necessary to ensure that the distance between two adjacent sub-electrodes 211 is large. In one possible case, in the direction parallel to the drive backplate 100, the distance between two adjacent sub-electrodes 211 in the same first electrode 210 needs to be greater than or equal to 1 micrometer.

[0088] However, if the distance between two adjacent sub-electrodes 211 is too large, the length of the connection segment L will be too long, resulting in a smaller sum of the areas of the orthographic projections of multiple sub-electrodes 211 on the driving backplate 100. This is not conducive to increasing the light-emitting area. Therefore, it is necessary to determine a suitable spacing based on the actual situation. For example, Figure 6 The distance between two adjacent sub-electrodes 211 in the first electrode 210 shown is 4 micrometers.

[0089] Combination Figure 6 , Figure 8 and Figure 9For multiple sub-electrodes 211 in the same first electrode 210, the multiple sub-electrodes 211 can be arranged in multiple columns along the first direction X and in multiple rows along the second direction Y. The first direction X intersects the second direction Y, and in one possible case, the first direction X is perpendicular to the second direction Y.

[0090] The connection segment L in different first electrodes 210 may be configured differently. This application provides illustrative examples using the following two methods.

[0091] The first method, see [link / reference] Figure 6 and Figure 8 For multiple connection segments L in the same first electrode 210, the multiple connection segments L may include multiple first connection segments L1 and multiple second connection segments L2. The first connection segment L1 is used to connect two adjacent sub-electrodes 211 in the first direction X, and the second connection segment L2 is used to connect two adjacent sub-electrodes 211 in the second direction Y.

[0092] like Figure 6 As shown, the first connecting segment L1 extends along the first direction X, and the second connecting segment L2 extends along the second direction Y. Figure 8 As shown, the extension direction of the first connecting segment L1 intersects the first direction X and the second direction Y, and the second connecting segment L2 extends along the second direction Y.

[0093] Specifically, for any one of the first connecting segment L1 and the second connecting segment L2, the width of the connecting segment L is smaller than the width of the sub-electrode 211 in the direction perpendicular to the extension of the connecting segment L. This makes the width of the connecting segment L smaller, which is convenient for cutting.

[0094] For example, such as Figure 6 As shown, in the second direction Y, the width of the first connecting segment L1 is smaller than the width of the sub-electrode 211. In the first direction X, the width of the second connecting segment L2 is smaller than the width of the sub-electrode 211. In one possible case, for Figure 6 The first connecting segment L1 and the second connecting segment L2 within the sub-pixel region K shown can both have a width of 2 micrometers in the second direction Y and a width of 2 micrometers in the first direction X.

[0095] For example, such as Figure 8 As shown, in the direction perpendicular to the extension of the first connecting segment L1, the width of the first connecting segment L1 is smaller than the width of the sub-electrode 211. In the first direction X, the width of the second connecting segment L2 is smaller than the width of the sub-electrode 211.

[0096] In one possible implementation, for any one of the first connecting segments L1 and the second connecting segment L2, the width of the connecting segment L needs to be greater than or equal to 1 micrometer in the direction perpendicular to the extension of the connecting segment L, so as to ensure a good connection effect between two adjacent sub-electrodes 211.

[0097] The second method, see Figure 9 For multiple connection segments L in the same first electrode 210, the multiple connection segments L may include: multiple third connection segments L3 and multiple fourth connection segments L4.

[0098] Multiple third connecting segments L3 correspond to multiple fourth connecting segments L4. The extension direction of the third connecting segment L3 intersects the extension direction of the corresponding fourth connecting segment L4, and the third connecting segments L3 and the corresponding fourth connecting segments L4 are interconnected. Both the extension directions of the third connecting segment L3 and the fourth connecting segment L4 can intersect with the first direction X and the second direction Y. For example, if the third connecting segment L3 extends along a third direction Z and the fourth connecting segment L4 extends along a fourth direction W, then both the third direction Z and the fourth direction W intersect with the first direction X and the second direction Y.

[0099] The two ends of the third connecting segment L3 can be connected to two adjacent sub-electrodes 211 in the extension direction of the third connecting segment L3, that is, the two ends of the third connecting segment L3 can be connected to two adjacent sub-electrodes 211 in the third direction Z. The two ends of the fourth connecting segment L4 can be connected to two adjacent sub-electrodes 211 in the extension direction of the fourth connecting segment L4, that is, the two ends of the fourth connecting segment L4 can be connected to two adjacent sub-electrodes 211 in the fourth direction W.

[0100] Specifically, the four sub-electrodes 211 connected to the interconnected third connecting segment L3 and fourth connecting segment L4 can be arranged in two columns along the first direction X and in two rows along the second direction Y. That is, 2*2 sub-electrodes 211 can be connected to each other through a pair of interconnected third connecting segments L3 and fourth connecting segments L4.

[0101] See also Figure 9 The 2*2 sub-electrodes 211 can be: first sub-electrode 01, second sub-electrode 02, third sub-electrode 03 and fourth sub-electrode 04 respectively.

[0102] The third connecting segment L3 is used to connect the first sub-electrode 01 and the third sub-electrode 03, and the fourth connecting segment L4 is used to connect the second sub-electrode 02 and the fourth sub-electrode 04. Since the third connecting segment L3 and the fourth connecting segment L4 are connected to each other, the first sub-electrode 01, the second sub-electrode 02, the third sub-electrode 03 and the fourth sub-electrode 04 can be connected together through the third connecting segment L3 and the fourth connecting segment L4.

[0103] In the 2*2 sub-electrodes 211, when a short circuit occurs between the first sub-electrode 01 and the second electrode layer 500, the portion of the third connecting segment L3 located on the side of the fourth connecting segment L4 near the first sub-electrode 01 can be cut off. This disconnects the first sub-electrode 01 from the other sub-electrodes 211, making the cutting relatively convenient. Furthermore, this cutting will not damage the connection between the second sub-electrode 02, the third sub-electrode 03, and the fourth sub-electrode 04.

[0104] In one possible implementation, the third connecting segment L3 can be greater than or equal to 1 micrometer, thereby ensuring a good connection between the first sub-electrode 01 and the third sub-electrode 03. The fourth connecting segment L4 can be greater than or equal to 1 micrometer, thereby ensuring a good connection between the second sub-electrode 02 and the fourth sub-electrode 04.

[0105] It should be noted that the width of the third connecting segment L3 and the fourth connecting segment L4 should not be too large. A larger width will increase the difficulty of cutting, and a larger width of the third connecting segment L3 and the fourth connecting segment L4 may also damage the sub-electrode 211 or the organic light-emitting layer 400 during cutting.

[0106] Therefore, in this embodiment, the width of the third connecting segment L3 needs to be less than the distance between the two sub-electrodes 211 distributed on both sides of the third connecting segment L3, and the width of the fourth connecting segment L4 needs to be less than the distance between the two sub-electrodes 211 distributed on both sides of the fourth connecting segment L4. That is, the width of the third connecting segment L3 needs to be less than the distance between the second sub-electrode 02 and the fourth sub-electrode 04, and the width of the fourth connecting segment L4 needs to be less than the distance between the first sub-electrode 01 and the third sub-electrode 03.

[0107] In one possible scenario, for multiple sub-electrodes 211 in the same first electrode 210, the orthographic projections of each sub-electrode 211 on the drive backplate 100 have the same shape and the same size. This simplifies the fabrication of the multiple sub-electrodes 211 and reduces the complexity of the process.

[0108] In one possible implementation, the shape of the orthographic projection of the sub-electrode 211 onto the drive backplate 100 can be polygonal, for example, such as... Figure 6 and Figure 9As shown, the orthographic projection of the sub-electrode 211 onto the drive backplate 100 is rectangular. For example, as shown below... Figure 8 As shown, the orthographic projection of the sub-pixel region K onto the driving backplate 100 is hexagonal, while the orthographic projection of the sub-electrode 211 onto the driving backplate 100 is triangular. This allows the sub-electrode 211 to easily adapt to the sub-pixel region K. In other possible implementations, such as... Figure 10 As shown, the orthographic projection of the sub-electrode 211 onto the drive backplate 100 is circular. However, the shape of the orthographic projection of the sub-electrode 211 onto the drive backplate 100 can vary, and this embodiment does not limit the specific shape.

[0109] It should be noted that when using a mask to deposit the organic light-emitting layer 400, the portion of the pixel definition layer 300 located around the sub-pixel region K can provide some support for the mask. However, due to the large size of the first electrode 210, the size of the mask used is also large. The portion of the mask near the center of the sub-pixel region K may collapse. The collapsed mask will scrape the film layer, causing the organic light-emitting layer 400 near the center of the sub-pixel region K to be missing. This will cause the first electrode layer 200 and the second electrode layer 500 to come into direct contact, resulting in a short circuit and causing dark spots.

[0110] It should also be noted that during the vapor deposition process, impurities from the outside can easily form microparticles on the organic light-emitting layer 400 near the center of the sub-pixel region K. This results in a smaller thickness in the part of the organic light-emitting layer 400 near the center of the sub-pixel region K, making the first electrode layer 200 and the second electrode layer 500 very prone to voltage breakdown and short circuit at the position near the center of the sub-pixel region K, thus causing dark spots.

[0111] In summary, short circuits are prone to occur between the first electrode layer 200 and the second electrode layer 500 near the center of the sub-pixel region K. Therefore, it is necessary to ensure that the area of ​​the orthogonal projection of the sub-electrode 211 near the center of the sub-pixel region K on the driving backplate 100 is small, so as to reduce the light loss after repairing the dark spot and reduce the impact on the display effect.

[0112] Therefore, in the embodiments of this application, see [reference needed]. Figure 11 The sub-pixel region K may include a central sub-region KA and at least one peripheral sub-region KB distributed around the central sub-region.

[0113] Among them, within the same sub-pixel region K, the area of ​​the orthogonal projection of the sub-electrode 211 distributed in the central sub-region KA onto the driving backplate 100 is smaller than the area of ​​the orthogonal projection of the sub-electrode 211 distributed in the peripheral sub-region KB onto the driving backplate 100.

[0114] In this way, the area of ​​the orthographic projection of the sub-electrodes 211 distributed in the central sub-region KA onto the driving backplate 100 is smaller, resulting in less light loss after repairing dark spots in the central sub-region KA and less impact on the display effect of the display panel 000. Furthermore, the smaller area of ​​the orthographic projection of the sub-electrodes 211 distributed in the central sub-region KA onto the driving backplate 100, and the larger area of ​​the sub-electrodes 211 distributed in the peripheral sub-region KB, results in a denser distribution of sub-electrodes 211 in the central sub-region KA and a sparser distribution in the peripheral sub-region KB. This eliminates the need to form a densely distributed array of sub-electrodes 211 throughout the sub-pixel region K, thereby reducing the manufacturing complexity of the sub-electrodes 211.

[0115] Here, for Figure 11 The sub-pixel region K shown has four sub-electrodes 211 and four connecting segments L forming a hollow area G within the central sub-region KA of the sub-pixel region K.

[0116] In one possible implementation, the number of peripheral sub-regions (KB) can be multiple.

[0117] For example, Figure 12 and Figure 13 Each of the sub-pixel regions K shown can include multiple peripheral sub-regions KB. For example... Figure 12 and Figure 13 As shown, for two adjacent peripheral sub-regions KB, the two peripheral sub-regions KB are the first peripheral sub-region KB1 and the second peripheral sub-region KB2, respectively. The first peripheral sub-region KB1 is closer to the central sub-region KA than the second peripheral sub-region KB2.

[0118] The number of sub-electrodes 211 in the first peripheral sub-region KB1 can be equal to the number of sub-electrodes in the second peripheral sub-region KB2, and the area of ​​the orthographic projection of the sub-electrodes 211 in the first peripheral sub-region KB1 onto the drive backplate 100 can be smaller than the area of ​​the orthographic projection of the sub-electrodes 211 in the second peripheral sub-region KB2 onto the drive backplate 100.

[0119] Here, in Figure 12 and Figure 13 In the sub-pixel region K shown, the number of sub-electrodes 211 in each peripheral sub-region KB is equal to the number of sub-electrodes 211 in the central sub-region KA, and the area of ​​the orthogonal projection of the sub-electrodes 211 in the multiple peripheral sub-regions KB onto the driving backplate 100 increases sequentially along the direction away from the central sub-region KA.

[0120] It should be noted that, in Figure 12In the sub-pixel region K shown, the number of sub-electrodes 211 in each peripheral sub-region KB and the number of sub-electrodes 211 in the central sub-region KA are both 4. Furthermore, in the same first electrode 210, four sub-electrodes 211 and four connecting segments L are used to form a hollow area G. Figure 13 In the sub-pixel region K shown, the number of sub-electrodes 211 in each peripheral sub-region KB and the number of sub-electrodes 211 in the central sub-region KA are both 2. Furthermore, in the same first electrode 210, two sub-electrodes 211 and two connecting segments L are used to form a hollow area G.

[0121] Please refer to Figure 14 The driving backplane 100 may include a substrate 101, a planarization layer 103, and multiple pixel driving circuits 102.

[0122] Multiple pixel driving circuits 102 can be located on the same side of the substrate 101 and arranged in an array.

[0123] The planarization layer 103 can be located on the side of the multiple pixel driving circuits 102 away from the substrate 101, and the planarization layer 103 can have multiple overlapping holes D.

[0124] The first electrode layer 200 is located on the side of the planarization layer 103 away from the substrate 101. The plurality of first electrodes 210 in the first electrode layer 200 correspond to the plurality of pixel driving circuits 102, and the first electrodes 210 can be electrically connected to the corresponding pixel driving circuit 102 through at least one lap hole D.

[0125] It should be noted that the orthographic projection of the sub-pixel opening U on the substrate 101 lies within the orthographic projection of the corresponding sub-electrode 211 on the substrate 101. To ensure high flatness on the side of the overlapping sub-electrode 211 facing away from the substrate 101, it is necessary to ensure that the orthographic projection of the overlapping hole D on the substrate 101 does not overlap with the orthographic projection of the sub-pixel opening U on the substrate 101. Since at least a portion of the connecting sub-electrode 212 can be located within the overlapping hole D, it is necessary to ensure that the orthographic projection of the connecting sub-electrode 212 on the substrate 101 does not overlap with the orthographic projection of the sub-pixel opening U on the substrate 101. This ensures the flatness of the portion of the sub-electrode 211 that overlaps with the sub-pixel opening U, thereby ensuring the light-emitting effect of the organic light-emitting layer 400 located within the sub-pixel opening U.

[0126] Continue to refer to Figure 14 The first electrode 210 may further include a connecting lead 212. The connecting lead 212 may correspond to the overlap hole D, and at least a portion of the connecting lead 212 may be located within the corresponding overlap hole D2.

[0127] For any first electrode 210 and its corresponding pixel driving circuit 102, the connecting lead 212 in the first electrode 210 can pass through the corresponding overlap hole D and be electrically connected to the pixel driving circuit 102. Furthermore, in the same first electrode 210, the connecting portion 212 can be connected to at least one sub-electrode 211. Thus, an electrical connection can be achieved between the first electrode 210 and the corresponding pixel driving circuit 102, allowing the pixel driving circuit 102 to apply voltage to the sub-electrode 211 via the connecting lead 212.

[0128] In one possible implementation, within the same first electrode 210, the connecting lead 212 can be connected to a sub-electrode 211. Exemplarily, in... Figure 6 Within a sub-pixel region K shown, a connecting lead 212 is connected to a sub-electrode 211. At least a portion of the connecting lead 212 may be located within an overlap hole D and electrically connected to the pixel driving circuit 102.

[0129] In other possible implementations, within the same first electrode 210, the connecting lead 212 can be connected to at least two sub-electrodes 211. For example, in... Figure 8 Within a sub-pixel region K shown, two adjacent sub-electrodes 211 in the first electrode 210 can be connected to the same connecting lead 212, and the connecting sub-electrodes 212 can pass through the overlapping hole D and be electrically connected to the pixel driving circuit 102.

[0130] In this situation, if one of the two sub-electrodes 211 connected to the connecting lead 212 short-circuits, the connecting segment L around this sub-electrode 211 can be cut off, disconnecting this sub-electrode 211 from the other sub-electrodes 211. Furthermore, the connection between this sub-electrode 211 and the connecting lead 212 needs to be cut off. For example, the corner where the sub-electrode 211 connects to the connecting lead 212 can be cut to repair the dark spot. At this time, the connecting lead 212 is still connected to the other sub-electrode 211, so the pixel driving circuit 102 can still apply voltage to the multiple sub-electrodes 211 in the first electrode 210 through the connecting lead 212, thereby ensuring that the portion of the organic light-emitting layer 400 in contact with the first electrode 210 can emit light normally.

[0131] It should be noted that in a first electrode 210, the number of connecting leads 212 is at least one. In one possible implementation, the first electrode 210 may include at least two connecting leads 212, so the first electrode 210 can be electrically connected to the corresponding pixel driving circuit 102 through at least two connecting leads 212. Since the connecting leads 212 correspond to the overlapping holes D, and the connecting leads 212 can be located within the corresponding overlapping holes D, that is, the first electrode 210 can be electrically connected to the corresponding pixel driving circuit 102 through at least two overlapping holes D.

[0132] For example, in Figure 15 Within the sub-pixel region K shown, the first electrode 210 may include two connecting leads 212, namely a first connecting lead 2121 and a second connecting lead 2122. A first overlapping hole D1 corresponds to the first connecting lead 2121, and a second overlapping hole D2 corresponds to the second connecting lead 2122. Thus, the first electrode 210 can be electrically connected to the corresponding pixel driving circuit 102 through the first connecting lead 2121 and the second connecting lead 2122, respectively. That is, there are two connection paths between the first electrode 210 and the pixel driving circuit 102.

[0133] In the event of a short circuit in the sub-electrode 211 near the first lap hole D1, please refer to... Figure 15 and Figure 16 To prevent the short-circuited sub-electrode 211 from being connected to other sub-electrodes 211, the connection segment L around the sub-electrode 211 needs to be cut off. Furthermore, the first connecting lead 2121 needs to be cut off to disconnect it from the sub-electrode 211. This prevents the pixel driving circuit 102 from applying voltage to the first electrode 210 via the first connecting lead 2121. In this case, the second connecting lead 2122 can pass through the second overlap hole D2 and be electrically connected to the pixel driving circuit 102. This allows the pixel driving circuit 102 to apply voltage to the first electrode 210 normally via the second connecting lead 2122, ensuring that the portion of the organic light-emitting layer 400 in contact with the first electrode 210 can emit light normally.

[0134] Please continue to refer to this. Figure 16 The driving backplane 100 may also include a transition electrode 104. The transition electrode 104 may be located between the pixel driving circuit 102 and the planarization layer 103, and the transition electrode 104 may be electrically connected to the pixel driving circuit 102.

[0135] For the connecting lead 212 in the first electrode 210, the connecting lead 212 can pass through the corresponding overlapping hole D and be electrically connected to the adapter electrode 104, thereby realizing the electrical connection between the connecting lead 212 and the pixel driving circuit 102, so that the pixel driving circuit 102 can apply voltage to the first electrode 210.

[0136] In this configuration, the same adapter electrode 104 can be electrically connected to a first electrode 210 through at least two overlapping holes D. A connecting lead 212 can pass through the corresponding overlapping hole D and be electrically connected to the adapter electrode 104, thus the same adapter electrode 104 can be electrically connected to at least two connecting leads 212.

[0137] It should also be noted that a short circuit can easily occur between the first electrode layer 200 and the second electrode layer 500 near the center of the sub-pixel region K. If the overlap hole D is located near the center of the sub-pixel region K, and a short circuit occurs in the sub-electrode 211 connected to the overlap hole D, cutting off the connection segment L around the sub-electrode 211 cannot repair the dark spot.

[0138] Therefore, the overlapping holes D need to be distributed around the sub-pixel region K. When the first electrode 210 is electrically connected to the corresponding pixel driving circuit 102 through at least two overlapping holes D, at least two overlapping holes D corresponding to the same first electrode 210 can be distributed around the sub-pixel region K where the first electrode 210 is located.

[0139] Please refer to Figure 17 The multiple sub-pixel regions K can include: multiple red sub-pixel regions K1, multiple green sub-pixel regions K2, and multiple blue sub-pixel regions K3.

[0140] The portion of the organic light-emitting layer 400 located within the red sub-pixel region K1 can be used to emit red light, the portion within the green sub-pixel region K2 can be used to emit green light, and the portion within the blue sub-pixel region K3 can be used to emit blue light. Thus, by mixing and superimposing different colors, the display panel 000 can display the corresponding image.

[0141] Specifically, the area of ​​the blue sub-pixel region K3 projected onto the driving backplate 100 is larger than the area of ​​the red sub-pixel region K1 projected onto the driving backplate 100, and also larger than the area of ​​the green sub-pixel region K2 projected onto the driving backplate 100. Since the lifetime of the blue light-emitting portion of the organic light-emitting layer 400 decays relatively quickly, increasing the area of ​​the blue sub-pixel region K3 projected onto the driving backplate 100 can increase the blue light-emitting area and avoid color shift.

[0142] It should also be noted that the number of sub-electrodes 211 distributed in the blue sub-pixel region K3 is greater than the number of sub-electrodes 211 distributed in the red sub-pixel region K1, and greater than the number of sub-electrodes 211 distributed in the green sub-pixel region K2.

[0143] Since the area of ​​the blue sub-pixel region K3 projected onto the driving backplate 100 is large, the probability of the sub-electrode 211 in the blue sub-pixel region K3 being short-circuited is high. This results in a large number of sub-electrodes 211 distributed in the blue sub-pixel region K3, which can reduce the area of ​​the projected area of ​​each sub-electrode 211 onto the driving backplate 100, thereby reducing the light emission loss caused by dark spot repair.

[0144] For the same sub-pixel region K, the ratio of the area of ​​the orthographic projection of sub-pixel region K onto the driving backplate 100 to the number of sub-electrodes 211 located within sub-pixel region K can be called the segmentation ratio of sub-pixel region K. The segmentation ratio of sub-pixel region K needs to be greater than or equal to 3; typically, the segmentation ratio of sub-pixel region K can be 10.

[0145] For the same red sub-pixel region K1, the ratio of the area of ​​the orthographic projection of the red sub-pixel region K1 onto the driving backplate 100 to the number of sub-electrodes 211 located within the red sub-pixel region K1 can be called the segmentation ratio of the red sub-pixel region K1. Similarly, for the same green sub-pixel region K2, the ratio of the area of ​​the orthographic projection of the green sub-pixel region K2 onto the driving backplate 100 to the number of sub-electrodes 211 located within the green sub-pixel region K2 can be called the segmentation ratio of the green sub-pixel region K2. Likewise, for the same blue sub-pixel region K3, the ratio of the area of ​​the orthographic projection of the blue sub-pixel region K3 onto the driving backplate 100 to the number of sub-electrodes 211 located within the blue sub-pixel region K3 can be called the segmentation ratio of the blue sub-pixel region K3.

[0146] Among them, the segmentation ratio of the green sub-pixel region K2 can be smaller than that of the red sub-pixel region K1, and the segmentation ratio of the red sub-pixel region K1 can be smaller than that of the blue sub-pixel region K3.

[0147] For a sub-pixel region K, if the area of ​​the orthographic projection of sub-pixel region K onto the driving backplate 100 and the number of sub-electrodes 211 within sub-pixel region K are both fixed values, then the specific value obtained by the segmentation ratio of sub-pixel region K can be approximately equal to the area of ​​the orthographic projection of each sub-electrode 211 within sub-pixel region K onto the driving backplate 100. That is, the area of ​​the orthographic projection of each sub-electrode 211 within the green sub-pixel region K2 onto the driving backplate 100 can be smaller than the area of ​​the orthographic projection of each sub-electrode 211 within the red sub-pixel region K1 onto the driving backplate 100, and the area of ​​the orthographic projection of each sub-electrode 211 within the red sub-pixel region K1 onto the driving backplate 100 can be smaller than the area of ​​the orthographic projection of each sub-electrode 211 within the blue sub-pixel region K3 onto the driving backplate 100.

[0148] This results in a smaller area of ​​the orthographic projection of each sub-electrode 211 in the green sub-pixel region K2 onto the driving backplate 100, while the area of ​​the orthographic projection of each sub-electrode 211 in the blue sub-pixel region K3 onto the driving backplate 100 is larger.

[0149] The human eye is more sensitive to green than to red, and more sensitive to red than to blue. Therefore, the projected area of ​​each sub-electrode 211 in the green sub-pixel region K2 onto the driving backplane 100 is smaller, resulting in less light loss due to dark spot repair in the green sub-pixel region K2, making it less noticeable to the human eye. Conversely, the projected area of ​​each sub-electrode 211 in the blue sub-pixel region K3 onto the driving backplane 100 is larger, reducing manufacturing complexity and making the light loss due to dark spot repair less noticeable to the human eye.

[0150] It should be noted that for the red sub-pixel region K1, the green sub-pixel region K2, and the blue sub-pixel region K3, the arrangement of the multiple sub-electrodes 211 within these three sub-pixel regions K can be the same or different, and the shape of the orthographic projection of the sub-electrodes 211 onto the driving backplate 100 can be the same or different. This application embodiment does not limit this aspect.

[0151] For example, see Figure 17 The arrangement of multiple sub-electrodes 211 within the three sub-pixel regions K is not entirely the same, and the shape of the orthographic projection of the sub-electrodes 211 onto the driving backplate 100 is also not entirely the same.

[0152] Within the red sub-pixel region K1, there are 8 sub-electrodes 211, and the orthographic projection of the sub-electrodes 211 onto the driving backplate 100 is rectangular. The 8 sub-electrodes 211 are arranged in four columns along the first direction X and in two rows along the second direction Y.

[0153] Within the green sub-pixel region K2, there are 16 sub-electrodes 211, and the orthographic projection of each sub-electrode 211 onto the driving backplate 100 is a triangle. These 16 sub-electrodes 211 can be divided into four sub-electrode groups M. These four sub-electrode groups M can be arranged in two columns along the first direction X and in two rows along the second direction Y. For any four sub-electrodes 211 in any sub-electrode group M, two sub-electrodes 211 are positioned opposite each other in the first direction X, and the other two sub-electrodes 211 are positioned opposite each other in the second direction Y, with the apex corners of all four sub-electrodes 211 pointing towards the center of the sub-electrode group M.

[0154] Within the blue sub-pixel region K3, there are 28 sub-electrodes 211, and the orthographic projection of the sub-electrodes 211 onto the driving backplate 100 is rectangular. The 28 sub-electrodes 211 are arranged in four columns along the first direction X and in seven rows along the second direction Y.

[0155] It should also be noted that the display panel 000 provided in the above embodiments can be applied not only to display scenarios with large display screens such as splicing displays and outdoor displays, but also to lighting scenarios such as vehicle taillights.

[0156] In summary, this application provides a display panel. The first electrode includes multiple sub-electrodes arranged in an array and connecting segments for connecting adjacent sub-electrodes. Multiple sub-electrodes within the same first electrode can be electrically connected to each other via the connecting segments. When a short circuit occurs between one or more sub-electrodes and the second electrode layer, a laser cutting process can be used to cut the connecting segments around the short-circuited sub-electrode, disconnecting other sub-electrodes from the short-circuited sub-electrode. This allows other sub-electrodes to receive voltage normally, enabling the organic light-emitting layer within the corresponding sub-pixel openings to emit light normally, thus achieving the effect of repairing dark spots and improving product yield. Furthermore, since only the short-circuited sub-electrode cannot drive the organic light-emitting layer to emit light, the light loss after repairing dark spots is minimal, ensuring a good display effect for the display panel.

[0157] This application also provides a display device, which can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0158] The display device may include a driver chip and a display panel. The display panel may be the display panel 000 in the above embodiment. The driver chip may be electrically connected to the display panel 000, thereby driving the display panel 000 to display an image.

[0159] 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.

[0160] 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.

[0161] 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, including: a driving backplane, a first electrode layer, a pixel definition layer, an organic light-emitting layer, and a second electrode layer. The first electrode layer is located on one side of the driving backplate. The first electrode layer has a plurality of separately disposed first electrodes, which are respectively located in the plurality of sub-pixel regions, and at least a portion of the first electrodes are electrically connected to the driving backplate. The first electrode includes: a plurality of sub-electrodes arranged in an array, and a connecting segment for connecting adjacent sub-electrodes. The pixel definition layer is located on the side of the first electrode layer away from the driving backplate. A portion of the pixel definition layer located within the same sub-pixel region has multiple sub-pixel openings. Within the same sub-pixel region, the multiple sub-pixel openings correspond to the multiple sub-electrodes in the first electrode. The orthographic projection of the sub-pixel openings on the driving backplate is located within the orthographic projection of the corresponding sub-electrode on the driving backplate. The organic light-emitting layer is located on the side of the pixel definition layer opposite to the driving backplate, and the organic light-emitting layer passes through the sub-pixel opening and contacts the sub-electrode; The second electrode layer is located on the side of the organic light-emitting layer opposite to the driving backplate.

2. The display panel according to claim 1, characterized in that, The first electrode has multiple hollow areas, and at least two of the sub-electrodes and at least two of the connecting segments in the same first electrode are used to enclose one of the hollow areas.

3. The display panel according to claim 2, characterized in that, In the same first electrode, the sum of the areas of the orthographic projections of the plurality of sub-electrodes on the drive back plate is greater than the sum of the areas of the orthographic projections of the plurality of connecting segments on the drive back plate, and is also greater than the sum of the areas of the orthographic projections of the plurality of hollow areas on the drive back plate.

4. The display panel according to claim 1, characterized in that, For the multiple sub-electrodes in the same first electrode, the multiple sub-electrodes are arranged in multiple columns along the first direction and in multiple rows along the second direction; For the multiple connection segments in the same first electrode, the multiple connection segments include: multiple first connection segments and multiple second connection segments; The first connecting segment connects two adjacent sub-electrodes in the first direction, and the second connecting segment connects two adjacent sub-electrodes in the second direction.

5. The display panel according to claim 4, characterized in that, For either the first connecting segment or the second connecting segment, in the direction perpendicular to the extension of the connecting segment, the width of the connecting segment is smaller than the width of the sub-electrode.

6. The display panel according to claim 1, characterized in that, For the multiple sub-electrodes in the same first electrode, the multiple sub-electrodes are arranged in multiple columns along the first direction and in multiple rows along the second direction; For the multiple connecting segments in the same first electrode, the multiple connecting segments include: multiple third connecting segments and multiple fourth connecting segments; the multiple third connecting segments and the multiple fourth connecting segments correspond to each other, the extension direction of the third connecting segment intersects the extension direction of the corresponding fourth connecting segment, and the third connecting segment and the corresponding fourth connecting segment are interconnected; the extension direction of the third connecting segment and the extension direction of the fourth connecting segment both intersect the first direction and both intersect the second direction; The two ends of the third connecting segment are respectively connected to two adjacent sub-electrodes in the extending direction of the third connecting segment, and the two ends of the fourth connecting segment are respectively connected to two adjacent sub-electrodes in the extending direction of the fourth connecting segment.

7. The display panel according to claim 6, characterized in that, The width of the third connecting segment is less than the distance between the two sub-electrodes distributed on both sides of the third connecting segment; the width of the fourth connecting segment is less than the distance between the two sub-electrodes distributed on both sides of the fourth connecting segment.

8. The display panel according to any one of claims 1 to 7, characterized in that, For the plurality of sub-electrodes in the same first electrode, the orthographic projections of each sub-electrode on the drive backplate have the same shape and the same size.

9. The display panel according to claim 8, characterized in that, The shape of the orthographic projection of the sub-electrode onto the drive backplate is rectangular, triangular, or circular.

10. The display panel according to claim 1, characterized in that, The sub-pixel region includes a central sub-region and at least one peripheral sub-region distributed around the central sub-region; Specifically, within the same sub-pixel region, the area of ​​the orthographic projection of the sub-electrode distributed in the central sub-region onto the driving backplate is smaller than the area of ​​the orthographic projection of the sub-electrode distributed in the peripheral sub-region onto the driving backplate.

11. The display panel according to claim 10, characterized in that, There are multiple peripheral sub-regions. For two adjacent peripheral sub-regions, the two peripheral sub-regions are a first peripheral sub-region and a second peripheral sub-region, and the first peripheral sub-region is closer to the central sub-region than the second peripheral sub-region. The number of sub-electrodes in the first peripheral sub-region is equal to the number of sub-electrodes in the second peripheral sub-region, and the area of ​​the orthographic projection of the sub-electrodes in the first peripheral sub-region onto the drive backplate is smaller than the area of ​​the orthographic projection of the sub-electrodes in the second peripheral sub-region onto the drive backplate.

12. The display panel according to any one of claims 1 to 7, 9 to 11, characterized in that, The driving backplane includes: a substrate, a planarization layer, and multiple pixel driving circuits; The plurality of pixel driving circuits are located on one side of the substrate; The planarization layer is located on the side of the plurality of pixel driving circuits opposite to the substrate, and the planarization layer has a plurality of overlapping holes; The first electrode layer is located on the side of the planarization layer opposite to the driving backplate. The plurality of first electrodes correspond to the plurality of pixel driving circuits. The first electrode is electrically connected to the corresponding pixel driving circuit through at least one of the overlapping holes. Wherein, the orthographic projection of the overlapping hole on the substrate does not overlap with the orthographic projection of the sub-pixel opening on the substrate.

13. The display panel according to claim 12, characterized in that, The driving backplate includes a transition electrode, which is located between the pixel driving circuit and the planarization layer, and is electrically connected to the pixel driving circuit. The same transition electrode is electrically connected to a first electrode through at least two overlapping holes. Among them, at least two overlapping holes corresponding to the same first electrode are distributed around the sub-pixel region where the first electrode is located.

14. The display panel according to any one of claims 1 to 7, 9 to 11, and 13, characterized in that, The plurality of sub-pixel regions include: a plurality of red sub-pixel regions, a plurality of green sub-pixel regions, and a plurality of blue sub-pixel regions; the portion of the organic light-emitting layer located in the red sub-pixel regions is used to emit red light, the portion of the organic light-emitting layer located in the green sub-pixel regions is used to emit green light, and the portion of the organic light-emitting layer located in the blue sub-pixel regions is used to emit blue light; Wherein, the area of ​​the blue sub-pixel region projected onto the driving backplane is greater than the area of ​​the red sub-pixel region projected onto the driving backplane, and is also greater than the area of ​​the green sub-pixel region projected onto the driving backplane; the number of sub-electrodes distributed in the blue sub-pixel region is greater than the number of sub-electrodes distributed in the red sub-pixel region, and is also greater than the number of sub-electrodes distributed in the green sub-pixel region.

15. A display device, characterized in that, It includes a driver chip and a display panel as described in any one of claims 1 to 14, wherein the display panel is electrically connected to the driver chip.

Images