Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a plurality of sub-pixels, a substrate, a pixel definition layer and a public organic layer, and the pixel definition layer is located on one side of the substrate; at least part of the pixel definition layer is located between two adjacent sub-pixels; the common organic layer is located on the side, away from the substrate, of the pixel definition layer. The display panel further comprises protruding parts, and the protruding parts are located between the public organic layer and the pixel definition layer and extend between every two adjacent sub-pixels. The orthographic projection of the protruding part on the substrate comprises a first side edge and a second side edge, the length of the first side edge is larger than that of the second side edge, and the extending direction of the first side edge intersects with the extending direction of the second side edge. According to the application, the length of the first side edge is larger than that of the second side edge, so that the extension length of the arch-shaped structure can be longer in the extension direction of the convex part, the range of a leakage flow path influenced by the convex part is enlarged, and the extension effect on the leakage flow path is enhanced.

Description

Technical Field

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

[0002] With the continuous development of display panel manufacturing technology, improving resolution has gradually become an important means of improving display quality. Increasing resolution usually means increasing pixel distribution density. However, as pixel distribution density increases, the distance between adjacent pixels often decreases, which can easily cause leakage between pixels and phenomena such as stealth lighting.

[0003] To address this leakage issue, existing techniques typically employ trenches between adjacent pixels in the hope of reducing the continuity of the film layer above the trenches, thereby hindering the transmission of leakage current along the transmission path. However, due to the limited depth of the trenches, these existing trenches have limited effectiveness in reducing the continuity of the film layer above them, and their effectiveness in preventing leakage current transmission is relatively weak. Summary of the Invention

[0004] In view of this, the present application provides a display panel and a display device to solve the above-mentioned problem of limited effect in preventing leakage.

[0005] In a first aspect, an embodiment of the present application provides a display panel comprising a plurality of sub-pixels; the display panel further comprises a substrate, a pixel definition layer, and a common organic layer, wherein the pixel definition layer is located on one side of the substrate; at least a portion of the pixel definition layer is located between two adjacent sub-pixels; and the common organic layer is located on a side of the pixel definition layer away from the substrate. The display panel also includes a raised portion, which is located between the common organic layer and the pixel definition layer and extends between two adjacent sub-pixels; the raised portion has an orthographic projection on the substrate including a first side and a second side, the length of the first side is greater than the length of the second side, and the extension direction of the first side intersects with the extension direction of the second side.

[0006] In a second aspect, the present application provides a display device, comprising the display panel provided in the first aspect.

[0007] In this application, a longer first side means a longer extension of the raised portion between adjacent sub-pixels, and the arched structure formed by the overlap of a portion of the film layer (e.g., a common organic layer) and the raised portion has a greater effect on extending the leakage current transmission path. Therefore, by setting the first side to be longer than the second side, the arched structure can be extended in the direction of the raised portion, increasing the range of the leakage current path affected by the raised portion and thereby enhancing the effect of extending the leakage current path. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] Figure 1 is a schematic top view of a partial structure of a display panel related to the present application; Figure 2 for Figure 1 The cross-sectional view of the display panel shown is taken along the first section line AA'; Figure 3 A schematic top view of a partial structure of a display panel provided in this application; Figure 4 for Figure 3 A schematic cross-sectional view of the display panel along a second section line BB' is shown; Figure 5 for Figure 3 An enlarged schematic diagram of a portion of the structure of the display panel within the marked area C is shown; Figure 6 A schematic top view of a partial structure of a display panel provided in this application; Figure 7 A schematic top view of a partial structure of a display panel provided in this application; Figure 8 for Figure 7 A schematic cross-sectional view of the display panel along a third section line CC' is shown; Figure 9 for Figure 7 Another cross-sectional schematic diagram of the display panel along the third section line CC' is shown; Figure 10 A schematic top view of a partial structure of a display panel provided in this application; Figure 11 for Figure 10 A schematic cross-sectional view of the display panel along a fourth section line DD' is shown; Figure 12 A schematic top view of a partial structure of a display panel provided in this application; Figure 13 for Figure 12 A schematic cross-sectional view of the display panel along a fifth section line EE' is shown; Figure 14 A schematic top view of a partial structure of a display panel provided in this application; Figure 15 A schematic top view of a partial structure of a display panel provided in this application; Figure 16 A schematic top view of a partial structure of a display panel provided in this application; Figure 17 A schematic top view of a partial structure of a display panel provided in this application; Figure 18 A schematic top view of a partial structure of a display panel provided in this application; Figure 19 for Figure 3 Another cross-sectional schematic diagram of the display panel along the second section line BB' is shown; Figure 20 A schematic top view of a partial structure of a display panel provided in this application; Figure 21 for Figure 20 A schematic cross-sectional view of a portion of the display panel structure along section line FF' is shown; Figure 22 for Figure 20 A schematic projection diagram of a partial structure of a display panel is shown; Figure 23 A schematic diagram of a display device provided in this application. DETAILED DESCRIPTION

[0010] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0011] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0012] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0013] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0014] As display requirements continue to increase, the resolution of display panels continues to increase, and the distribution density of light-emitting devices on the display panel increases accordingly, further reducing the spacing between adjacent light-emitting devices. Because the display panel includes different light-emitting devices, and different light-emitting devices have different corresponding turn-on voltages when emitting light, leakage current is likely to occur between adjacent different light-emitting devices. In this case, if the spacing between adjacent light-emitting devices is small, the leakage current intensity between these adjacent light-emitting devices is often large. For example, among the different light-emitting devices included in the display panel, the turn-on voltage of the blue light-emitting device is often large. Therefore, when emitting light, the blue light-emitting device is likely to transmit leakage current to other adjacent light-emitting devices. If the spacing between the blue light-emitting device and the adjacent light-emitting device is small, the leakage current transmission path between the light-emitting devices is short, the leakage current transmission efficiency is high, and it is likely to generate a large leakage current.

[0015] Figure 1 is a schematic top view of a partial structure of a display panel related to the present application, Figure 2 for Figure 1 The display panel is shown as a schematic cross-sectional view along the first section line AA′.

[0016] In the prior art, combined Figure 1 and Figure 2 In order to solve the problem of high leakage current intensity mentioned above, it is usually chosen to set a groove 03' on the pixel definition layer 02' between the first electrodes 01' (which can be anodes) corresponding to adjacent light-emitting devices. Among them, part of the conductive film layer 04' located above the pixel definition layer 02' (for example, the electron injection layer, electron transport layer, etc. located above the light-emitting material layer) can be conformally attached to the groove 03'. This existing technical solution hopes to use the height difference corresponding to the sidewalls of the groove 03 to reduce the continuity of the conductive film layer 04' at the position corresponding to the groove 03', increase the impedance of the conductive film layer 04', and thereby reduce the current intensity of the leakage current transmitted in the conductive film layer 04. However, due to the limited depth h of the groove 03', the effect of the groove 03' in reducing the continuity of the conductive film layer 04' is limited, and thus the effect of the existing technical solution in reducing leakage current is weak. In particular, this prior art solution can also extend the transmission path of the leakage current in the conductive film layer 04 ′ and thus reduce the leakage current. However, similarly, due to the limitation of the depth h of the trench 03 ′, this solution has limited effect on extending the transmission path of the leakage current.

[0017] Figure 3 This is a schematic top view of a partial structure of a display panel provided in this application. Figure 4 for Figure 3 Shown is a schematic cross-sectional view of the display panel along the second section line BB'. In view of the above problems, the present application provides a display panel 10, which is combined with Figure 3 and Figure 4The display panel 10 includes a plurality of sub-pixels 01. The sub-pixels 01 may include a light-emitting material layer 012. The light-emitting material layer 012 may be located on one side of a first electrode 011 (which may be an anode) of the sub-pixel 01. The sub-pixel 01 may be an organic light-emitting diode (OLED).

[0018] Combine Figure 3 and Figure 4 The display panel 10 further includes a substrate 02 and a pixel definition layer 03. The pixel definition layer 03 is located on one side of the substrate 02. At least a portion of the pixel definition layer 03 is located between two adjacent sub-pixels 01.

[0019] The display panel 10 further includes a common organic layer 04, which is located on a side of the pixel definition layer 03 away from the substrate 02. When leakage current exists between two adjacent sub-pixels 01, the leakage current can be transferred from one sub-pixel 01 to the other sub-pixel 01 through the common organic layer 04. Figure 4 As shown, a portion of the common organic layer 04 can be located on the side of the light-emitting material layer 012 facing away from the first electrode 011. In this case, the common organic layer 04 can be at least one of an electron transport layer, an electron injection layer, or other film layers. Furthermore, the common organic layer 04 can also be at least one of a hole transport layer, a hole injection layer, or other film layers (this situation is not shown in the figure).

[0020] Combine Figure 3 and Figure 4 The display panel 10 also includes a raised portion 05, which is located between the common organic layer 04 and the pixel definition layer 03 and extends between two adjacent sub-pixels 01. The common organic layer 04 can be conformally attached to the surface of the raised portion 05 facing away from the pixel definition layer 03. The portion of the common organic layer 04 that overlaps with the raised portion 05 can be considered to form an arch-like structure. Compared to the corresponding transmission path length when the leakage current is transmitted through the non-overlapping portion (the portion of the common organic layer 04 that does not overlap with the raised portion 05), the presence of the arch-like structure results in a longer path length for the leakage current transmitted through the overlapping portion (the portion of the common organic layer 04 that overlaps with the raised portion 05).

[0021] Figure 5 for Figure 3 The diagram shows an enlarged schematic diagram of a portion of the structure of the display panel within the marked range C.

[0022] Combine Figure 3 and Figure 5The orthographic projection of protrusion 05 on substrate 02 includes a first side 05a and a second side 05b. The length of first side 05a is greater than the length of second side 05b, and the extension direction of first side 05a intersects the extension direction of second side 05b. The first side 05a of protrusion 05 can extend along a first direction X, and the second side 05b can extend along a second direction Y, with the first direction X and the second direction Y intersecting.

[0023] In the embodiment of the present application, a longer length of first side 05a means a longer extension of raised portion 05 between adjacent sub-pixels 01, a greater proportion of overlap on common organic layer 04, and a greater effect of the arch-shaped structure on extending the leakage current transmission path. Therefore, by setting the length of first side 05a to be greater than the length of second side 05b, the arch-shaped structure can be extended in the direction in which raised portion 05 extends, increasing the range of the leakage current path affected by raised portion 05 and thereby enhancing the effect of extending the leakage current path.

[0024] In one embodiment of the present application, Figure 3 and Figure 5 Two adjacent sub-pixels 01 have edges close to the raised portion 05 , and along an extension direction perpendicular to the raised portion 05 , the first side 05 a and the edges of the two adjacent sub-pixels 01 at least partially overlap.

[0025] The extension direction of the raised portion 05 can be parallel to the opposite edges of two adjacent sub-pixels 01, and the opposite edges of the two adjacent sub-pixels 01 can both face the same raised portion 05. Specifically, the first sub-pixel 01a and the second sub-pixel 01b are adjacent to each other, and the first edge 01a1 of the first sub-pixel 01a and the second edge 01b1 of the second sub-pixel 01b can both be close to the edges of the raised portion 05.

[0026] In the embodiment of the present application, first side 05a overlaps at least a portion of first edge 01a1 and at least a portion of second edge 01b1, which helps the raised portion 05 prevent leakage current between the first sub-pixel 01a and the second sub-pixel 01b. In other words, in this embodiment, the probability that the raised portion 05 will extend the leakage current path between two adjacent sub-pixels 01 is increased.

[0027] In one embodiment of the present application, Figure 3 and Figure 5 Along the extending direction perpendicular to the protrusion 05, the first side 05a covers the edges of two adjacent sub-pixels 01. Along the second direction Y, the first side 05a may completely overlap the first edge 01a1, and the first side 05a may also completely overlap the second edge 01b1.

[0028] In the embodiment of the present application, when the first side 05a covers the first edge 01a1 and the second edge 01b1 in the second direction Y, for the leakage current passing through the area between the first edge 01a1 and the second edge 01b1, the corresponding transmission path has a high probability of overlapping with the area where the protrusion 05 is located, which helps to extend the leakage current path by the protrusion 05.

[0029] In one embodiment of the present application, Figure 3 and Figure 5 , a protrusion 05 is included between the opposite edges of two adjacent sub-pixels 01.

[0030] The length of the first side 05a is L1, the length of the second side 05b is L2, and 5≤L1 / L2≤20.

[0031] In the embodiment of the present application, due to the small spacing between two adjacent sub-pixels 01, the length L2 of the second side 05b of the raised portion 05 needs to be limited to a suitable threshold range. This embodiment utilizes the ratio of the length L1 of the first side 05a to the length L2 of the second side 05b to meet the requirement of 5≤L1 / L2≤20, which helps ensure that the width of the raised portion 05 is within a suitable range. This maximizes the effect of the raised portion 05 on extending the leakage path while ensuring the proper use of the space between the opposing edges.

[0032] Figure 6 This is a schematic top view of a partial structure of a display panel provided in this application.

[0033] In one embodiment of the present application, Figure 6 As shown, the plurality of sub-pixels 01 include a first sub-pixel 01a, a second sub-pixel 01b and a third sub-pixel 01c arranged along a first direction X, and the second sub-pixel 01b is located between the first sub-pixel 01a and the third sub-pixel 01c.

[0034] The raised portion 05 adjacent to the second sub-pixel 01b includes a first raised portion 051 , a first side 05a of the first raised portion 051 extending in parallel with the first direction X, and two second sides 05b of the first raised portion 051 located on both sides of the first side 05a in the first direction X.

[0035] The two second side edges 05b of the first protruding portion 051 are tangent to the first center line C1 and the second center line C2 respectively.

[0036] The first center line C1 is located between the first sub-pixel 01a and the second sub-pixel 01b, and along the first direction X, the first center line C1 is equidistant from the first sub-pixel 01a and the second sub-pixel 01b. Figure 6As shown, along the first direction X, the distance between the first center line C1 and the first sub-pixel 01a and the distance between the first center line C1 and the second sub-pixel 01b may both be m.

[0037] The second center line C2 is located between the second sub-pixel 01b and the third sub-pixel 01c, and along the first direction X, the second center line C2 is equidistant from the second sub-pixel 01b and the third sub-pixel 01c. Figure 6 As shown, along the first direction X, the distance between the second center line C2 and the second sub-pixel 01b and the distance between the second center line C2 and the third sub-pixel 01c may both be n.

[0038] Figure 7 This is a schematic top view of a partial structure of a display panel provided in this application. Figure 8 for Figure 7 FIG. 1 is a schematic cross-sectional view of a display panel along a third section line CC′.

[0039] In one embodiment of the present application, Figure 7 and Figure 8 A groove 031 is further formed on the side of the pixel definition layer 03 away from the substrate 02. The groove 031 and the protrusion 05 extend between two adjacent sub-pixels 01. The length of the second side 05b is L2, the width of the groove 031 is W1, and 0.1≤L2 / W1≤10.

[0040] The common organic layer 04 can be conformally attached to the side of the groove 031 facing away from the substrate 02 and the side of the raised portion 05 facing away from the substrate 02. The provision of the groove 031 can thus extend the leakage path. Compared to the case where only the groove 031 or only the raised portion 05 is provided, this embodiment employs the simultaneous provision of both the groove 031 and the raised portion 05, which further enhances the effect of extending the leakage path and improves the weak leakage reduction effect caused by insufficient trench depth. Furthermore, the length L2 of the second side 05b can be considered the width of the raised portion 05. When 0.1 ≤ L2 / W1 ≤ 10 is satisfied, the limited space between adjacent sub-pixels 01 is sufficient to accommodate the provision of the groove 031 and the raised portion 05, thus facilitating the rational use of the space between adjacent sub-pixels 01 while achieving leakage reduction.

[0041] Figure 9 for Figure 7 FIG. 1 is another schematic cross-sectional view of the display panel along the third section line CC′.

[0042] In one embodiment of the present application, Figure 7 and Figure 9Along the thickness direction of the display panel 10, the protrusion 05 and the groove 031 do not overlap. In adjacent protrusions 05 and grooves 031, the distance between the orthographic projection of the protrusion 05 on the substrate 02 and the orthographic projection of the groove 031 on the substrate 02 is W2, 0≤W2≤10um.

[0043] A gap may exist between the protrusion 05 and the groove 031 between two adjacent sub-pixels 01, and the gap width is W2. Due to the limited space between two adjacent sub-pixels 01, when setting the protrusion 05 and the groove 031, in addition to the size of the width of the protrusion 05 and the width W1 of the groove 031, the size range of the gap width W2 also needs to be considered. This embodiment helps to limit the gap width between the protrusion 05 and the groove 031 to a reasonable range by setting 0≤W2≤10um. In particular, when W2=0, the side of the protrusion 05 can be connected to the side of the groove 031 (this situation is not shown in the figure), and at this time, there may be no gap between the protrusion 05 and the groove 031.

[0044] In one embodiment of the present application, Figure 4 As shown, the height of the protrusion 05 is h, the length of the second side 05b is L2, and 0.3≤L2 / h≤40.

[0045] In the embodiment of the present application, the ratio between the width L2 and the height h of the raised portion 05 can affect the outer arc length of the raised portion 05. This outer arc length can refer to the length of the edge of the cross-section of the raised portion 05 (the cross-section being perpendicular to the extension direction of the raised portion 05) facing away from the substrate 02. It should be noted that the greater the outer arc length, the longer the corresponding leakage path of the leakage current in the common organic layer 04. This is because a portion of the common organic layer 04 (herein referred to as the overlapping portion) can be conformally attached to the surface of the raised portion 05 facing away from the substrate 02. Therefore, the length of the overlapping portion of the common organic layer 04 can be considered the length of the leakage path, and the length of the overlapping portion can be determined by the outer arc length. Therefore, in this embodiment, by setting 0.3≤L2 / h≤40, it is helpful to achieve the desired outer arc length. This helps to maximize the length of the overlapping portion while maintaining the limited spacing between adjacent sub-pixels 01, thereby hindering the transmission of leakage current.

[0046] Figure 10 This is a schematic top view of a partial structure of a display panel provided in this application. Figure 11 for Figure 10 FIG. 1 is a schematic cross-sectional view of a display panel along a fourth section line DD′.

[0047] In one embodiment of the present application, Figure 10 and Figure 11The display panel 10 further includes a support portion 06. The side of the protrusion 05 that is farther from the substrate 02 is closer to the substrate 02 than the side of the support portion 06 that is farther from the substrate 02. During the manufacturing process of the display panel 10, the grooves 031 can be formed by etching. A mask is required to form the patterned grooves 031 when etching the pixel definition layer 03. In this case, the support portion 06 can serve to support the mask.

[0048] The height of support portion 06 is H, the height of raised portion 05 is h, and the maximum value of H / h is 5.4. To prevent contact between the mask and raised portion 05, the height H of support portion 06 can be set to be greater than the height h of raised portion 05, thereby preventing the mask from scratching raised portion 05. In particular, when H / h = 5.4, the distance between the mask and raised portion 05 during the preparation of groove 031 can be maximized while maintaining the desired overall thickness of display panel 10, thereby reducing the probability of raised portion 05 being scratched.

[0049] In one embodiment of the present application, Figure 10 and Figure 11 , the supporting portion 06 is connected to the raised portion 05 .

[0050] In the embodiment of the present application, the support portion 06 is connected to the protrusion 05, which means that the support portion 06 and the protrusion 05 can be an integrated structure, and the preparation of the support portion 06 and the protrusion 05 can be completed in the same preparation step, reducing the process cost.

[0051] It should be noted that the attached Figure 10 and Figure 11 The use of different fill patterns for the raised portion 05 and the support portion 06 in the figures (and subsequent figures) is merely for the purpose of distinguishing the two and does not necessarily mean that the components of the raised portion 05 and the support portion 06 are different. In fact, the same material can be used to make the raised portion 05 and the support portion 06 in this application.

[0052] Figure 12 This is a schematic top view of a partial structure of a display panel provided in this application. Figure 13 for Figure 12 FIG. 1 is a schematic cross-sectional view of the display panel along a fifth section line EE′.

[0053] In one embodiment of the present application, Figure 12 and Figure 13 , the supporting portion 06 is disconnected from the raised portion 05 .

[0054] In the embodiment of the present application, the height H of the support portion 06 is higher than the height h of the raised portion 05, which can easily lead to a weakened continuity of some conductive film layers (such as the common organic layer 04 and the cathode layer of the sub-pixel 01) in the area where the support portion 06 is located, and this can easily lead to disconnection of these conductive film layers. To maintain the continuity of some conductive film layers (such as the common organic layer 04 and the cathode layer of the sub-pixel 01) in the area where the support portion 06 is located, this embodiment provides a disconnection between the support portion 06 and the raised portion 05. This reduces the possibility of uneven heights in the conductive film layers in the gap between the support portion 06 and the raised portion 05, thus improving the electrical conductivity efficiency of these conductive film layers in the area where the support portion 06 is located.

[0055] In one embodiment of the present application, Figure 12 and Figure 13 There is a first gap A1 between the adjacent support portion 06 and the protruding portion 05, and the width of the first gap A1 is Δw, 2.5um≤Δw≤5um.

[0056] In the embodiment of the present application, the presence of the first gap A1 can maintain the continuity of the aforementioned portion of the conductive film layer (e.g., the common organic layer 04, the cathode layer of the sub-pixel 01, etc.). The width Δw of the first gap A1 can affect the strength of the continuity of the aforementioned portion of the conductive film layer. In this embodiment, by setting 2.5 μm ≤ Δw ≤ 5 μm, this helps to maintain the continuity of the aforementioned portion of the conductive film layer to meet practical needs.

[0057] Figure 14 This is a schematic top view of a partial structure of a display panel provided in this application.

[0058] In one embodiment of the present application, Figure 14 As shown, the orthographic projection of the protrusion 05 adjacent to the same sub-pixel 01 on the substrate 02 at least partially surrounds the orthographic projection of the sub-pixel 01 on the substrate 02 .

[0059] In the embodiment of the present application, when the raised portion 05 at least partially surrounds the sub-pixel 01, there is a high probability that the leakage current between the sub-pixel 01 and other sub-pixels 01 is weakened by the setting of the raised portion 05. This setting method helps to enhance the protective effect of the raised portion 05 on the sub-pixel 01 (the role of the raised portion 05 in hindering the transmission of the leakage current of the sub-pixel 01 can be regarded as the protection of the sub-pixel 01 by the raised portion 05).

[0060] In one embodiment of the present application, Figure 14 As shown, the orthographic projection of the protrusion 05 adjacent to the same sub-pixel 01 on the substrate 02 surrounds the orthographic projection of the sub-pixel 01 on the substrate 02 .

[0061] In the embodiment of the present application, the raised portion 05 surrounds the sub-pixel 01, which means that the arch-shaped structure corresponding to the raised portion 05 on the common organic layer 04 can also surround the sub-pixel 01. Therefore, the leakage current received or output by the sub-pixel 01 will inevitably be transmitted along the extended path. Therefore, the arrangement of this embodiment helps to further hinder the transmission of leakage current between adjacent sub-pixels 01.

[0062] Figure 15 This is a schematic top view of a partial structure of a display panel provided in this application.

[0063] In one possible implementation, Figure 15 As shown, the plurality of sub-pixels 01 may include a first-type sub-pixel 010. Compared to the other sub-pixels 01, the first-type sub-pixel 010 has a higher turn-on voltage. The first-type sub-pixel 010 may emit blue light. The orthographic projection of the raised portion 05 on the substrate 02 surrounds the orthographic projection of the first-type sub-pixel 010 on the substrate 02.

[0064] In this implementation, when the first type of sub-pixel 010 emits light, the first type of sub-pixel 010 is likely to output leakage current to other sub-pixels 01. In this case, a raised portion 05 surrounding the first type of sub-pixel 010 can be provided to reduce the intensity of the leakage current output by the first type of sub-pixel 010 to the surrounding sub-pixels 010.

[0065] Figure 16 This is a schematic top view of a partial structure of a display panel provided in this application.

[0066] In addition, if Figure 16 As shown, there may also be a protrusion 05 connected to a support portion 06 , and the orthographic projection of the overall structure composed of the protrusion 05 and the support portion 06 on the substrate 02 surrounds the orthographic projection of the sub-pixel 01 on the substrate 02 .

[0067] In one embodiment of the present application, Figure 3 As shown, the orthographic projection of the protrusion 05 adjacent to the same sub-pixel 01 on the substrate 02 partially surrounds the orthographic projection of the sub-pixel 01 on the substrate 02 .

[0068] Among the raised portions 05 adjacent to the sub-pixel 01, a second gap A2 exists between at least some of the raised portions 05. The height h of the raised portion 05 can cause some film layers in the display panel 10 (e.g., the common organic layer 04, the cathode layer of the sub-pixel 01, etc.) to experience unevenness in the areas where they overlap, potentially affecting the continuity of these film layers. By providing the second gap A2 in this embodiment, the portion of the film layer overlapping the second gap A2 is less susceptible to the influence of the raised portion 05, reducing the probability of unevenness and facilitating the continuity of the portion of the film layer overlapping the second gap A2.

[0069] Figure 17 This is a schematic top view of a partial structure of a display panel provided in this application.

[0070] In one embodiment of the present application, Figure 17 As shown, a groove 031 is further provided on the side of the pixel definition layer 03 away from the substrate 02. The groove 031 and the raised portion 05 both extend between two adjacent sub-pixels 01. The orthographic projection of the groove 031 adjacent to the same sub-pixel 01 on the substrate 02 partially surrounds the orthographic projection of the sub-pixel 01 on the substrate 02.

[0071] Among the grooves 031 adjacent to the same sub-pixel 01, at least some of these grooves 031 have a third gap A3 between them. The presence of grooves 031 can easily cause some film layers in the display panel 10 (e.g., the common organic layer 04, the cathode layer of the sub-pixel 01, etc.) to experience unevenness in the areas where they overlap, potentially affecting the continuity of these film layers. However, the grooves 031 do not need to be present in the areas where the third gaps A3 are located. In this case, the portions of these film layers that overlap with the third gaps A3 are less likely to be affected by the grooves 031, and the probability of unevenness is low.

[0072] Wherein, at least a portion of the second gap A2 overlaps with the third gap A3. Figure 17 As shown, in the first area S1, there may be a second gap A2 and a third gap A3 overlapping along the third direction Z, then the groove 031 and the protrusion 05 may not exist in the first area S1, and the above-mentioned partial film layer is hardly affected by the groove 031 and the protrusion 05 in the first area S1, and the portion of the above-mentioned partial film layer located in the first area S1 has strong continuity in the third direction Z.

[0073] In this embodiment, there may be a situation where the cathodes corresponding to multiple sub-pixels 01 are an integrated structure. In this case, when the second gap A2 and the third gap A3 overlap in the first area S1, the portion of the cathode of the sub-pixel 01 located in the first area S1 has strong continuity in the third direction Z.

[0074] Figure 18 This is a schematic top view of a partial structure of a display panel provided in this application.

[0075] In one embodiment of the present application, Figure 18 As shown, the display panel 10 further includes a plurality of sub-pixel groups 100 extending along a first direction X and arranged along a second direction Y. The sub-pixel group 100 includes a plurality of sub-pixels 01 arranged along the first direction X, and the first direction X intersects the second direction Y.

[0076] The plurality of protrusions 05 include a second protrusion 052 and a third protrusion 053 . The extending direction of the second protrusion 052 is the same as the first direction X, and the extending direction of the third protrusion 053 is the same as the second direction Y.

[0077] The second protrusions 052 between adjacent sub-pixel groups 100 are connected to each other, and the adjacent third protrusions 053 are disconnected.

[0078] In the embodiment of the present application, the plurality of second raised portions 052 located between two adjacent sub-pixel groups 100 and extending along the first direction X can be integrally formed. This arrangement can reduce the number of openings corresponding to the second raised portions 052 on the mask, thereby reducing process complexity and manufacturing costs. Furthermore, adjacent third raised portions 053 arranged along the second direction Y are disconnected. Considering that a second gap A2 can exist between some of the raised portions 05 adjacent to the same sub-pixel 01, a second gap A2 can exist between the third raised portions 053 and the second raised portions 052. The presence of the second gap A2 can improve the continuity between the cathodes of adjacent sub-pixels 01 within the same sub-pixel group 100.

[0079] Figure 19 for Figure 3 Shown is another cross-sectional schematic diagram of the display panel along the second section line BB'.

[0080] In one embodiment of the present application, Figure 19 As shown, the surface of the protrusion 05 facing away from the pixel definition layer 03 is connected to the first contact surface M1 of the pixel definition layer 03 at the first tangent point P1. The first contact surface M1 is the portion of the surface of the pixel definition layer 03 away from the substrate 02 that contacts the protrusion 05.

[0081] An angle between a tangent line of the surface of the protrusion 05 facing away from the pixel definition layer 03 at the first tangent point P1 and the first contact surface M1 is θ, and 30°≤θ≤55°.

[0082] Figure 20 This is a schematic top view of a partial structure of a display panel provided in this application. Figure 21 for Figure 20 The cross-sectional view of a portion of the display panel structure along the section line FF' is shown. Figure 22 for Figure 20 The projection diagram of the partial structure of the display panel is shown in FIG. Figure 22 Only the Figure 20 The pixel opening corresponding to the first sub-pixel, the pixel opening corresponding to the second sub-pixel, and the orthographic projections corresponding to the protrusion located between the first sub-pixel and the second sub-pixel are respectively corresponded to.

[0083] In one embodiment of the present application, Figure 20 and Figure 21 Pixel definition layer 03 is provided with a pixel opening 032, and at least a portion of sub-pixel 01 is located within pixel opening 032. A first sub-pixel 01a is adjacent to a second sub-pixel 01b. The pixel opening 032 corresponding to first sub-pixel 01a is a first opening 032a, and the pixel opening 032 corresponding to second sub-pixel 01b is a second opening 032b. Raised portion 05 may be located between first opening 032a and second opening 032b. The distance between first opening 032a and raised portion 05 is smaller than the distance between second opening 032b and raised portion 05, meaning that first opening 032a is closer to raised portion 05.

[0084] Combine Figure 20 、 Figure 21 and Figure 22 The orthographic projection of the raised portion 05 on the substrate 02 is a first projection 050. Among the pixel openings 032 corresponding to two adjacent sub-pixels 01, the orthographic projection of the pixel opening 032 closest to the raised portion 05 on the substrate 02 is a second projection 030. The orthographic projection of the first opening 032a on the substrate 02 can be the second projection 030, and the orthographic projection of the second opening 032b on the substrate 02 can be the third projection 033. The distance between the first projection 050 and the second projection 030 is ΔL, where 4 μm ≤ ΔL ≤ 20 μm.

[0085] Figure 23 A schematic diagram of a display device provided in this application.

[0086] The present application provides a display device 20, such as Figure 23 As shown, the display device 20 includes the above-mentioned display panel 10. The display device 20 can be a mobile phone. In addition, the display device 20 can also be an electronic device such as a computer or a television.

[0087] The phenomenon of light stealing in the display device 20 provided in the embodiment of the present application is greatly improved.

[0088] In this specification, reference can be made to the same or similar parts between the various embodiments. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A display panel, characterized in that: comprising a plurality of sub-pixels; the display panel further comprising: substrate; a pixel definition layer, located on one side of the substrate; at least a portion of the pixel definition layer is located between two adjacent sub-pixels; a common organic layer, the common organic layer being located on a side of the pixel definition layer away from the substrate; A raised portion, wherein the raised portion is located between the common organic layer and the pixel definition layer and extends between two adjacent sub-pixels; the positive projection of the raised portion on the substrate includes a first side and a second side, the length of the first side is greater than the length of the second side, and the extension direction of the first side intersects with the extension direction of the second side.

2. The display panel according to claim 1, wherein: The two adjacent sub-pixels have edges close to the protrusion, and along an extension direction perpendicular to the protrusion, the first side and the edges of the two adjacent sub-pixels at least partially overlap.

3. The display panel according to claim 2, wherein: Along an extension direction perpendicular to the protruding portion, the first side covers edges of the two adjacent sub-pixels.

4. The display panel according to claim 2, wherein: The length of the first side is L1, the length of the second side is L2, and 5≤L1 / L2≤20.

5. The display panel according to claim 4, wherein: The plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged along a first direction, and the second sub-pixel is located between the first sub-pixel and the third sub-pixel; The raised portions adjacent to the second sub-pixel include a first raised portion, the first side of the first raised portion extending in a direction parallel to the first direction, and two second side edges of the first raised portion being located on both sides of the first side in the first direction; In which, the two second side edges of the first protrusion are respectively tangent to the first center line and the second center line; the first center line is located between the first sub-pixel and the second sub-pixel, and along the first direction, the first center line is equidistant from the first sub-pixel and the second sub-pixel; the second center line is located between the second sub-pixel and the third sub-pixel, and along the first direction, the second center line is equidistant from the second sub-pixel and the third sub-pixel.

6. The display panel according to claim 1, wherein: A groove is further provided on a side of the pixel definition layer away from the substrate, and both the groove and the protrusion extend between two adjacent sub-pixels; the length of the second side is L2, the width of the groove is W1, and 0.1≤L2 / W1≤10.

7. The display panel according to claim 6, wherein: Along the thickness direction of the display panel, the protrusions and the grooves do not overlap; in adjacent protrusions and grooves, the distance between the orthographic projection of the protrusion on the substrate and the orthographic projection of the groove on the substrate is W2, 0≤W2≤10um.

8. The display panel according to claim 1, wherein: The height of the protrusion is h, the length of the second side is L2, and 0.3≤L2 / h≤40.

9. The display panel according to claim 1, wherein: The display panel further includes a supporting portion, wherein a side of the protrusion away from the substrate is closer to the substrate than a side of the supporting portion away from the substrate; The height of the support portion is H, the height of the protruding portion is h, and the maximum value of H / h is 5.

4.

10. The display panel according to claim 9, wherein: The supporting portion is connected to the protruding portion.

11. The display panel according to claim 9, wherein The supporting portion is disconnected from the protruding portion.

12. The display panel according to claim 11, wherein: There is a first gap between adjacent support portions and protruding portions, and a width of the first gap is Δw, where 2.5 um ≤ Δw ≤ 5 um.

13. The display panel according to claim 1, wherein The orthographic projections of the protrusions adjacent to the same sub-pixel on the substrate at least partially surround the orthographic projection of the sub-pixel on the substrate. 14 . The display panel according to claim 13 , wherein the orthographic projections of the protrusions adjacent to the same sub-pixel on the substrate surround the orthographic projection of the sub-pixel on the substrate.

15. The display panel according to claim 13, wherein: The orthographic projection of the convex portion adjacent to the same sub-pixel on the substrate partially surrounds the orthographic projection of the sub-pixel on the substrate; Among the convex portions adjacent to the sub-pixel, a second gap exists between at least some of the convex portions.

16. The display panel according to claim 15, wherein: A groove is further provided on a side of the pixel definition layer away from the substrate, wherein the groove and the protrusion both extend between two adjacent sub-pixels; an orthographic projection of the groove adjacent to the same sub-pixel on the substrate partially surrounds the orthographic projection of the sub-pixel on the substrate; Among the grooves adjacent to the same sub-pixel, a third gap exists between at least some of the grooves; At least a portion of the second gap overlaps with the third gap.

17. The display panel according to claim 15, wherein: The display panel further includes a plurality of sub-pixel groups extending along a first direction and arranged along a second direction, wherein the sub-pixel groups include a plurality of sub-pixels arranged along the first direction, and the first direction intersects the second direction; The plurality of protrusions include a second protrusion and a third protrusion, wherein the second protrusion extends in the same direction as the first direction, and the third protrusion extends in the same direction as the second direction; Wherein, the second protrusions between adjacent sub-pixel groups are connected to each other, and the adjacent third protrusions are disconnected.

18. The display panel according to claim 1, wherein The surface of the protrusion facing away from the pixel definition layer is connected to a first contact surface of the pixel definition layer at a first tangent point, where the first contact surface is a portion of the surface of the pixel definition layer facing away from the substrate that contacts the protrusion; Therefore, the angle between the tangent line of the surface of the protrusion away from the pixel definition layer at the first tangent point and the first contact surface is θ, and 30°≤θ≤55°.

19. The display panel according to claim 1, wherein A pixel opening is provided on the pixel definition layer, and at least a portion of the sub-pixel is located in the pixel opening; The orthographic projection of the raised portion on the substrate is a first projection, and among the pixel openings corresponding to the two adjacent sub-pixels, the orthographic projection of the pixel opening closest to the raised portion on the substrate is a second projection; the distance between the first projection and the second projection is ΔL, 4um≤ΔL≤20um.

20. A display device, characterized in that: Comprising the display panel according to any one of claims 1-19.

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