Display panel, manufacturing method thereof and display device

Abstract

This invention relates to the field of display technology and discloses a display panel, its manufacturing method, and a display device. The display panel includes: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer including multiple pixel regions and multiple pixel spacing regions, at least two adjacent pixel regions being separated from each other by the pixel spacing regions, the pixel defining layer including at least one groove located in the pixel spacing region; and a first organic layer located on the side of the pixel defining layer away from the substrate, the first organic layer including an organic film, the organic film at least covering the inner wall of the groove. This invention can repair cracks in the display panel and improve the yield of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] In the existing technology, when the display panel displays an image, if some pixel areas in the display panel are lit up, a strong leakage current is easily generated between the lit pixel areas and the adjacent pixel areas that should not be lit up, causing the pixel areas that should not be lit to emit a faint light, i.e., pixel stealing phenomenon, which reduces the display effect of the display panel.

[0003] Therefore, grooves are created in the organic layer between some pixels of the display panel to alleviate pixel stealth. However, creating grooves in the organic layer can cause cracks at the bottom of the grooves, affecting the normal display of pixels and thus reducing the yield of the display panel. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and a method for manufacturing the same, as well as a display device, which can repair cracks in the display panel and improve the yield of the display panel.

[0005] The present invention provides a display panel, comprising: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer including a plurality of pixel regions and a plurality of pixel spacing regions, at least two adjacent pixel regions being spaced apart from each other by the pixel spacing regions, the pixel defining layer including at least one groove located in the pixel spacing region; and a first organic layer located on the side of the pixel defining layer away from the substrate, the first organic layer including an organic film, the organic film at least covering the inner wall of the groove.

[0006] Based on the same idea, the present invention also provides a method for manufacturing a display panel, comprising: providing a substrate; forming a pixel definition layer on one side of the substrate, the pixel definition layer including a plurality of pixel regions and a plurality of pixel spacing regions, wherein two adjacent pixel regions are separated from each other by the pixel spacing regions; forming at least one groove on the pixel definition layer, the groove being located in the pixel spacing region; and forming a first organic layer on the side of the pixel definition layer away from the substrate, the first organic layer including an organic film, the organic film at least covering the inner wall of the groove.

[0007] Based on the same idea, the present invention also provides a display device, including the display panel provided by the present invention.

[0008] Compared with the prior art, the display panel, its manufacturing method, and the display device provided by the present invention achieve at least the following beneficial effects:

[0009] The display panel provided by this invention includes a pixel definition layer comprising at least one groove located in the pixel spacing region. This groove, situated in the pixel spacing region of the pixel definition layer, effectively reduces leakage current, thereby mitigating the issue of pixel "stealing light" in non-emitting light-emitting units and improving the display panel's performance. Furthermore, the display panel also includes a first organic layer disposed on the side of the pixel definition layer away from the substrate. This first organic layer comprises an organic film that at least covers the inner wall of the groove. The organic film can repair cracks formed during the etching of the groove in the pixel definition layer, preventing cracks from causing light-emitting unit failure and affecting the display panel's performance, thus effectively improving the display panel's yield.

[0010] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0011] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0013] Figure 1 This is a plan view of a display panel provided by the present invention;

[0014] Figure 2 yes Figure 1 A cross-sectional view of the display panel along line A-A';

[0015] Figure 3 yes Figure 1 Another cross-sectional view of the display panel along A-A';

[0016] Figure 4 yes Figure 1 Another cross-sectional view of the display panel along A-A';

[0017] Figure 5 yes Figure 1 Another cross-sectional view of the display panel along A-A';

[0018] Figure 6 yes Figure 1 Another cross-sectional view of the display panel along A-A';

[0019] Figure 7 yes Figure 1 Another cross-sectional view of the display panel along A-A';

[0020] Figure 8This is a flowchart of a method for manufacturing a display panel provided by the present invention;

[0021] Figures 9-10 This is a schematic diagram illustrating the manufacturing process of a display panel provided by the present invention;

[0022] Figure 11 This is a schematic diagram illustrating another manufacturing process of the display panel provided by the present invention;

[0023] Figure 12 This is a plan view of a display device provided by the present invention. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0029] Figure 1 This is a plan view of a display panel provided by the present invention. Figure 2 yes Figure 1 A cross-sectional view of the display panel along A-A', see reference. Figure 1 and Figure 2 This embodiment provides a display panel, which includes a substrate 10. The substrate 10 can be a rigid substrate, and the material of the substrate 10 is glass. The substrate 10 can also be a flexible substrate, and the material of the substrate 10 is polyimide (PI), polycarbonate (PC), or polyethylene terephthalate (PET), etc.

[0030] The display panel also includes a pixel definition layer 20, which is located on one side of the substrate 10. The pixel definition layer 20 includes a plurality of pixel regions 21 and a plurality of pixel spacing regions 22. At least two adjacent pixel regions 21 are separated from each other by the pixel spacing regions 22. The pixel regions 21 are used to set the light-emitting units 30.

[0031] The light-emitting unit 30 in the display panel is prone to leakage current. The leakage current will be transmitted to the adjacent light-emitting unit 30 through the pixel definition layer 20, causing the light-emitting unit 30 that should not emit light to emit light, that is, the pixel stealing phenomenon, which reduces the display effect of the display panel.

[0032] The pixel definition layer 20 includes at least one groove 23 located in the pixel spacing region 22. By setting the groove 23 in the pixel spacing region 22 of the pixel definition layer 20, leakage current is effectively reduced, thereby effectively improving the pixel stealth phenomenon in the light-emitting units 30 that do not require light emission, and enhancing the display effect of the display panel.

[0033] It should be noted that, Figure 1 The example shows that grooves 23 are provided on the pixel interval area 22 between two adjacent pixel areas 21, and the number of grooves is two. In other embodiments of the present invention, grooves 23 may be provided only on some of the pixel interval areas 22 between two adjacent pixel areas 21 according to actual production needs, and the number of grooves may be other values. The present invention will not elaborate on them here.

[0034] The display panel also includes a first organic layer 40, which is located on the side of the pixel definition layer 20 away from the substrate 10. The first organic layer 40 includes an organic film 41, which at least covers the inner wall of the groove 23.

[0035] Specifically, a groove 23 needs to be set in the pixel definition layer 20 of the display panel. However, when the groove 23 is etched in the pixel definition layer 20, the stress is concentrated at the tip of the bottom of the etched groove 23. This causes cracks to easily form in the area corresponding to the tip of the bottom of the groove 23 in the pixel definition layer 20. The formation of cracks will affect the setting of subsequent film layers, and the spread of cracks will easily cause the light-emitting unit 30 to fail, affecting the display effect of the display panel.

[0036] The display panel provided in this embodiment of the invention further includes a first organic layer 40 disposed on the side of the pixel definition layer 20 away from the substrate 10. The first organic layer 40 includes an organic film 41, which at least covers the inner wall of the groove 23. Thus, the organic film 41 can repair the cracks formed when etching the groove 23 in the pixel definition layer 20, and can prevent the cracks from causing the light-emitting unit 30 to fail and affecting the display effect of the display panel, thereby effectively improving the yield of the display panel.

[0037] Optional, continue to refer to Figure 1 and Figure 2 Along a direction perpendicular to the plane of the substrate 10, the groove 23 may not penetrate the pixel definition layer 20. The groove 23 helps to increase the length of the path through which the leakage current flows, thereby increasing the resistance along the path and reducing the magnitude of the leakage current. Furthermore, the conductive layer deposited on the sidewall of the groove 23 is relatively thin, which helps to increase the resistance of the conductive layer at that location, effectively reducing the leakage current transmitted to the light-emitting unit 30 that does not need to emit light. This effectively improves the pixel stealth phenomenon in the light-emitting unit 30 that does not need to emit light, and improves the display effect of the display panel. At this time, the pixel definition layer 20 can be exposed, developed, and etched using a halftone mask to form vias located in the pixel spacing region 22 and grooves 23 located in the pixel spacing region 22.

[0038] Furthermore, the groove 23 provided in the pixel spacing area 22 of the pixel definition layer 20 can alleviate the bending stress when the display panel is bent, and prevent cracks from appearing on the pixel definition layer 20, which would affect the display effect of the display panel.

[0039] Optional, see reference Figure 1 and Figure 3 , Figure 3 yes Figure 1 In another cross-sectional view of the display panel along A-A', in a direction perpendicular to the plane of the substrate 10, the groove 23 penetrates the pixel definition layer 20, i.e., the groove 23 is a through-hole structure. The arrangement of the groove 23 helps to increase the path resistance of leakage current. Furthermore, since the opening area of ​​the groove 23 on the surface of the pixel definition layer 20 away from the substrate 10 is the same, the deeper the groove 23 penetrates the pixel definition layer 20, the steeper the sidewall of the groove 23, resulting in a thinner conductive layer deposited on the sidewall of the groove 23. The fact that the groove 23 penetrates the pixel definition layer 20 in a direction perpendicular to the plane of the substrate 10 helps to reduce the thickness of the conductive layer deposited on the sidewall of the groove 23, increasing the resistance of the conductive layer at that point, effectively reducing the leakage current transmitted to the light-emitting unit 30 that does not need to emit light, thereby effectively improving the pixel stealth phenomenon in the light-emitting unit 30 that does not need to emit light and improving the display effect of the display panel. At this point, the pixel definition layer 20 can be exposed, developed, and etched using a conventional mask to form vias located in the pixel spacing region 22 and grooves 23 located in the pixel spacing region 22.

[0040] Furthermore, the groove 23 can penetrate the pixel definition layer 20, meaning that the groove 23 is a through-hole structure, which can better relieve stress.

[0041] Figure 4 yes Figure 1 Another cross-sectional view of the display panel along A-A', see reference. Figure 1 and Figure 4 Optionally, the display panel further includes an array layer 50, located on one side of the substrate 10. The array layer 50 includes at least pixel circuitry, which includes structures such as thin-film transistors (TFTs). The TFTs can be either top-gate or bottom-gate structures. Figure 3 The example shown illustrates a top-gate thin-film transistor T, but this invention does not specifically limit its application. The pixel definition layer 20 is located on the side of the array layer 50 away from the substrate 10. The light-emitting unit 30 disposed in the pixel region 21 is electrically connected to the pixel circuit in the array layer 50, and the light-emitting unit 30 is driven to emit light through the pixel circuit.

[0042] Figure 5 yes Figure 1 Another cross-sectional view of the display panel along A-A', see reference. Figure 1 and Figure 5 In some alternative embodiments, the first organic layer 40 further includes a support post 42 located in the pixel spacing region 22, and the support post 42 does not overlap with the groove 23 in a direction perpendicular to the plane of the substrate 10.

[0043] Specifically, the display panel also includes a support pillar 42, which is located on the side of the pixel definition layer 20 away from the substrate 10. The support pillar 42 is used to support the high-precision metal mask used when depositing the light-emitting layer in the vapor-emitting unit 30. The support pillar 42 is located in the pixel spacing region 22, along a direction perpendicular to the plane of the substrate 10. The support pillar 42 does not overlap with the groove 23, thus avoiding mutual interference between the arrangement of the groove 23 and the arrangement of the support pillar 42.

[0044] Meanwhile, the organic membrane 41 is located in the first organic layer 40, and the support column 42 is also located in the first organic layer 40. That is, the organic membrane 41 and the support column 42 can be made of the same material in the same process, which effectively reduces the process and production costs.

[0045] It should be noted that, Figure 5 The illustration exemplifies a structure in a display panel where the groove 23, along a direction perpendicular to the plane of the substrate 10, does not penetrate the pixel definition layer 20, representing a structure of the organic film 41 and support pillar 42 in the first organic layer 40. In other embodiments of the invention, the groove 23 in the display panel may also penetrate the pixel definition layer 20 along a direction perpendicular to the plane of the substrate 10; in this case, the structure of the organic film 41 and support pillar 42 in the first organic layer 40 can be referenced. Figure 6 , Figure 6 yes Figure 1 Another cross-sectional view of the display panel along A-A' is described herein, but will not be repeated here.

[0046] Continue to refer to Figure 1 and Figure 5 In some alternative embodiments, the height of the support post 42 in a direction perpendicular to the plane of the substrate 10 is greater than the thickness of the organic film 41.

[0047] Specifically, the organic film 41 is used to repair the cracks formed by the etched grooves 23 in the pixel definition layer 20, so the thickness of the organic film 41 does not need to be too thick, which helps to reduce costs. The support pillar 42 is used to support the high-precision metal mask used in the evaporation of the light-emitting layer in the evaporation light-emitting unit 30, so the support pillar 42 is relatively high in the direction perpendicular to the plane of the substrate 10, so as to support the high-precision metal mask used in the evaporation of the light-emitting layer in the evaporation light-emitting unit 30.

[0048] It should be noted that the height of the support post 42 along the direction perpendicular to the plane of the substrate 10 and the thickness of the organic film 41 can be set according to actual production needs. This invention does not impose specific limitations on this, as long as the height of the support post 42 along the direction perpendicular to the plane of the substrate 10 is greater than the thickness of the organic film 41. This allows the organic film 41 to repair the cracks formed by the etched grooves 23 in the pixel definition layer 20, while the support post 42 supports the high-precision metal mask used in the evaporation of the light-emitting layer in the light-emitting unit 30.

[0049] Continue to refer to Figure 1 and Figure 5 In some alternative embodiments, the thickness of the organic film 41 is less than the depth of the groove 23 in the direction perpendicular to the plane of the substrate 10.

[0050] Specifically, the groove 23 in the pixel definition layer 20 is used to increase the path resistance of leakage current, effectively reducing leakage current and thus effectively improving the pixel stealth phenomenon of the light-emitting unit 30 that does not need to emit light, thereby improving the display effect of the display panel. Therefore, the thickness of the organic film 41 needs to be less than the depth of the groove 23 in the direction perpendicular to the plane of the substrate 10, to avoid the organic film 41 being too thick and filling the groove 23, which would reduce the path resistance of leakage current and affect the improvement of the pixel stealth phenomenon of the light-emitting unit 30 that does not need to emit light. The thickness of the organic film 41 is less than the depth of the groove 23 in the direction perpendicular to the plane of the substrate 10, so that even if the organic film 41 covers the inner wall of the groove 23, it is still a recessed structure, which can improve the pixel stealth phenomenon of the light-emitting unit 30 that does not need to emit light.

[0051] Figure 7 yes Figure 1 Another cross-sectional view of the display panel along A-A', see reference. Figure 1 and Figure 7In some alternative embodiments, the material of the first organic layer 40 is the same as the material of the pixel definition layer 20.

[0052] Specifically, the first organic layer 40 can be made of the same material as the pixel definition layer 20, that is, the material of the organic film 41 is the same as the material of the pixel definition layer 20. Thus, the organic film 41 and the pixel definition layer 20 are made of the same material, and thus the organic film 41 and the pixel definition layer 20 have good compatibility. Therefore, the organic film 41 has a good repair effect on the cracks formed by the etched grooves 23 in the pixel definition layer 20, which can effectively prevent the cracks from causing the light-emitting unit 30 to fail and affecting the display effect of the display panel, and effectively improve the yield of the display panel.

[0053] Continue to refer to Figure 1 and Figure 5 In some alternative embodiments, the material of the first organic layer 40 is different from the material of the pixel definition layer 20.

[0054] Specifically, the first organic layer 40 can be made of a different material than the pixel definition layer 20. The material of the first organic layer 40 can be selected in a targeted manner, so that while the organic film 41 can better repair the cracks formed by the etched grooves 23 in the pixel definition layer 20, the performance of the support pillar 42 can be improved.

[0055] For example, the first organic layer 40 can be made of a material that has a strong interaction with the material of the pixel definition layer 20 and provides good support. The strong interaction between the material of the first organic layer 40 and the material of the pixel definition layer 20 results in good compatibility between the organic film 41 and the pixel definition layer 20. This allows the organic film 41 to effectively repair cracks formed by the etched grooves 23 in the pixel definition layer 20, effectively preventing cracks from causing the light-emitting unit 30 to fail and affecting the display effect of the display panel, thus effectively improving the yield of the display panel. At the same time, the finished product made of the material of the first organic layer 40 has a good support effect, that is, the support pillar 42 has a good support effect.

[0056] Continue to refer to Figure 1 and Figure 5 In some alternative embodiments, the materials of the first organic layer 40 and the pixel definition layer 20 are both organic adhesives.

[0057] Specifically, finished products made with organic adhesives have good insulation, flatness, and support. Therefore, the pixel definition layer 20 is usually made of organic adhesives. Correspondingly, the material of the first organic layer 40 can also be made of organic adhesives. Thus, the organic film 41 and the pixel definition layer 20 have good compatibility. As a result, the organic film 41 has a good repair effect on the cracks formed by the etched grooves 23 in the pixel definition layer 20. It can effectively prevent the cracks from causing the light-emitting unit 30 to fail and affecting the display effect of the display panel, thus effectively improving the yield of the display panel.

[0058] Figure 8 This is a flowchart of a method for manufacturing a display panel provided by the present invention. Figures 9-10 This is a schematic diagram illustrating the manufacturing process of a display panel provided by the present invention, for reference. Figures 8-10 This embodiment provides a method for manufacturing a display panel, including:

[0059] S1. Provide a substrate.

[0060] S2. A pixel definition layer is formed on one side of the substrate. The pixel definition layer includes multiple pixel regions and multiple pixel spacing regions, with adjacent pixel regions separated from each other by the pixel spacing regions.

[0061] S3. Form at least one groove on the pixel definition layer, the groove being located in the pixel spacing region.

[0062] refer to Figure 9 The pixel definition layer 20 includes at least one groove 23, which is located in the pixel spacing region 22, i.e., the groove 23 is set in the pixel spacing region 22 of the pixel definition layer 20.

[0063] S4. A first organic layer is formed on the side of the pixel definition layer away from the substrate. The first organic layer includes an organic film, which at least covers the inner wall of the groove.

[0064] refer to Figure 10 The first organic layer 40 is located on the side of the pixel definition layer 20 away from the substrate 10. The first organic layer 40 includes an organic film 41, which at least covers the inner wall of the groove 23.

[0065] Continue to refer to Figure 1 and Figure 2 In the display panel manufactured using the method provided by this invention, the pixel definition layer 20 includes at least one groove 23 located in the pixel spacing region 22. By setting the groove 23 in the pixel spacing region 22 of the pixel definition layer 20, leakage current is effectively reduced, thereby effectively improving the pixel stealth phenomenon in the light-emitting units 30 that do not require light emission, and enhancing the display effect of the display panel.

[0066] Meanwhile, since the pixel definition layer 20 in the display panel has a groove 23, when the groove 23 is etched in the pixel definition layer 20, the stress is concentrated at the tip of the bottom of the etched groove 23, which makes the area corresponding to the tip of the bottom of the groove 23 in the pixel definition layer 20 prone to cracks. The generation of cracks will affect the setting of subsequent film layers, and the spread of cracks will easily cause the light-emitting unit 30 to fail, affecting the display effect of the display panel.

[0067] The display panel manufactured using the method provided by the present invention further includes a first organic layer 40 disposed on the side of the pixel definition layer 20 away from the substrate 10. The first organic layer 40 includes an organic film 41, which at least covers the inner wall of the groove 23. Thus, the organic film 41 can repair the cracks formed by etching the groove 23 in the pixel definition layer 20, preventing the cracks from causing the light-emitting unit 30 to fail and affecting the display effect of the display panel, thereby effectively improving the yield of the display panel.

[0068] Optional, continue to refer to Figure 1 and Figure 2 Along a direction perpendicular to the plane of the substrate 10, the groove 23 may not penetrate the pixel definition layer 20. The groove 23 helps to increase the length of the path through which the leakage current flows, thereby increasing the resistance along the path and reducing the magnitude of the leakage current. Furthermore, the conductive layer deposited on the sidewall of the groove 23 is relatively thin, which helps to increase the resistance of the conductive layer at that location, effectively reducing the leakage current transmitted to the light-emitting unit 30 that does not need to emit light. This effectively improves the pixel stealth phenomenon in the light-emitting unit 30 that does not need to emit light, and improves the display effect of the display panel. At this time, the pixel definition layer 20 can be exposed, developed, and etched using a halftone mask to form vias located in the pixel spacing region 22 and grooves 23 located in the pixel spacing region 22.

[0069] Furthermore, the groove 23 provided in the pixel spacing area 22 of the pixel definition layer 20 can alleviate the bending stress when the display panel is bent, and prevent cracks from appearing on the pixel definition layer 20, which would affect the display effect of the display panel.

[0070] Optional, continue to refer to Figure 1 and Figure 3Along a direction perpendicular to the plane of the substrate 10, the groove 23 penetrates the pixel definition layer 20, i.e., the groove 23 is a through-hole structure. The setting of the groove 23 helps to increase the path resistance of leakage current. Furthermore, since the opening area of ​​the groove 23 on the side of the pixel definition layer 20 away from the substrate 10 is the same, the deeper the groove 23 penetrating the pixel definition layer 20, the steeper the sidewall of the groove 23, and thus the thinner the conductive layer deposited on the sidewall of the groove 23. The groove 23 penetrating the pixel definition layer 20 along a direction perpendicular to the plane of the substrate 10 helps to reduce the thickness of the conductive layer deposited on the sidewall of the groove 23, increasing the resistance of the conductive layer at that point, effectively reducing the leakage current transmitted to the light-emitting unit 30 that does not need to emit light, thereby effectively improving the pixel stealth phenomenon of the light-emitting unit 30 that does not need to emit light, and improving the display effect of the display panel. At this time, the pixel definition layer 20 can be exposed, developed, and etched using a conventional mask to form the through-hole located in the pixel spacing region 22 and the groove 23 located in the pixel spacing region 22.

[0071] Furthermore, the groove 23 can penetrate the pixel definition layer 20, meaning that the groove 23 is a through-hole structure, which can better relieve stress.

[0072] Figure 11 This is a schematic diagram illustrating another manufacturing process of the display panel provided by the present invention, for reference. Figure 11 In some alternative embodiments, the first organic layer 40 further includes a support post 42 located in the pixel spacing region 22, and the support post 42 does not overlap with the groove 23 in a direction perpendicular to the plane of the substrate 10.

[0073] Continue to refer to Figure 1 and Figure 5 The display panel manufactured using the method provided by this invention further includes a support pillar 42. The support pillar 42 is located on the side of the pixel definition layer 20 away from the substrate 10. The support pillar 42 is used to support the high-precision metal mask used when depositing the light-emitting layer in the evaporation light-emitting unit 30. The support pillar 42 is located in the pixel spacing region 22 along a direction perpendicular to the plane of the substrate 10. The support pillar 42 does not overlap with the groove 23, thus avoiding mutual interference between the arrangement of the groove 23 and the arrangement of the support pillar 42.

[0074] Meanwhile, the organic membrane 41 is located in the first organic layer 40, and the support column 42 is also located in the first organic layer 40. That is, the organic membrane 41 and the support column 42 can be made of the same material in the same process, which effectively reduces the process and production costs.

[0075] It should be noted that, Figure 5The illustration exemplifies a structure in a display panel where the groove 23, along a direction perpendicular to the plane of the substrate 10, does not penetrate the pixel definition layer 20, representing the structure of the organic film 41 and support pillar 42 in the first organic layer 40. In other embodiments of the invention, the groove 23 in the display panel may also penetrate the pixel definition layer 20 along a direction perpendicular to the plane of the substrate 10. In this case, the structure of the organic film 41 and support pillar 42 in the first organic layer 40 can be referred to... Figure 6 The present invention will not be described in detail here.

[0076] In some alternative embodiments, a halftone mask is used to expose, develop, and etch the first organic layer to form an organic film and support pillars;

[0077] The height of the support pillar along the direction perpendicular to the plane of the substrate is greater than the thickness of the organic film.

[0078] Continue to refer to Figure 1 and Figure 5 In the display panel manufacturing method provided by the present invention, a halftone mask can be used to expose, develop, and etch the first organic layer 40 to form an organic film 41 and a support pillar 42. Therefore, in the display panel manufactured using the method provided by the present invention, the height of the support pillar 42 in the direction perpendicular to the plane of the substrate 10 is greater than the thickness of the organic film 41.

[0079] Specifically, the organic film 41 is used to repair the cracks formed by the etched grooves 23 in the pixel definition layer 20, so the thickness of the organic film 41 does not need to be too thick, which helps to reduce costs. The support pillar 42 is used to support the high-precision metal mask used in the evaporation of the light-emitting layer in the evaporation light-emitting unit 30, so the support pillar 42 is relatively high in the direction perpendicular to the plane of the substrate 10, so as to support the high-precision metal mask used in the evaporation of the light-emitting layer in the evaporation light-emitting unit 30.

[0080] In some alternative embodiments, please refer to Figure 12 , Figure 12 This is a plan view of a display device provided by the present invention. The display device 1000 provided in this embodiment includes the display panel 100 provided in the above embodiment of the present invention. Figure 10 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device 1000 provided in this embodiment can also be other display devices 1000 with display functions, such as computers, televisions, and in-vehicle display devices. This invention does not impose specific limitations on these. The display device 1000 provided in this embodiment has the beneficial effects of the display panel 100 provided in this embodiment. For details, please refer to the specific descriptions of the display panel 100 in the above embodiments; these will not be repeated here.

[0081] As can be seen from the above embodiments, the display panel, its manufacturing method, and the display device provided by the present invention achieve at least the following beneficial effects:

[0082] The display panel provided by this invention includes a pixel definition layer comprising at least one groove located in the pixel spacing region. This groove, situated in the pixel spacing region of the pixel definition layer, effectively reduces leakage current, thereby mitigating the issue of pixel "stealing light" in non-emitting light-emitting units and improving the display panel's performance. Furthermore, the display panel also includes a first organic layer disposed on the side of the pixel definition layer away from the substrate. This first organic layer comprises an organic film that at least covers the inner wall of the groove. The organic film can repair cracks formed during the etching of the groove in the pixel definition layer, preventing cracks from causing light-emitting unit failure and affecting the display panel's performance, thus effectively improving the display panel's yield.

[0083] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, include: Substrate; A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a plurality of pixel regions and a plurality of pixel spacing regions. At least two adjacent pixel regions are separated from each other by the pixel spacing regions. The pixel definition layer includes at least one groove located in the pixel spacing region. A first organic layer is located on the side of the pixel definition layer away from the substrate. The first organic layer includes an organic film and a support pillar. The organic film at least covers the inner wall of the groove. The support pillar is located in the pixel spacing region along a direction perpendicular to the plane of the substrate, and the support pillar does not overlap with the groove.

2. The display panel according to claim 1, characterized in that, The height of the support column in the direction perpendicular to the plane of the substrate is greater than the thickness of the organic film.

3. The display panel according to claim 1, characterized in that, The thickness of the organic film is less than the depth of the groove along the direction perpendicular to the plane of the substrate.

4. The display panel according to claim 1, characterized in that, The material of the first organic layer is the same as the material of the pixel definition layer.

5. The display panel according to claim 1, characterized in that, The material of the first organic layer is different from the material of the pixel definition layer.

6. The display panel according to claim 4 or 5, characterized in that, Both the first organic layer and the pixel definition layer are made of organic adhesive.

7. A method for manufacturing a display panel, characterized in that, include: Provide substrates; A pixel definition layer is formed on one side of the substrate. The pixel definition layer includes multiple pixel regions and multiple pixel spacing regions, and two adjacent pixel regions are separated from each other by the pixel spacing regions. At least one groove is formed on the pixel definition layer, and the groove is located in the pixel spacing region; A first organic layer is formed on the side of the pixel definition layer away from the substrate. The first organic layer includes an organic film and a support pillar. The organic film at least covers the inner wall of the groove. The support pillar is located in the pixel spacing region along a direction perpendicular to the plane of the substrate, and the support pillar does not overlap with the groove.

8. The method for manufacturing a display panel according to claim 7, characterized in that, The first organic layer is exposed, developed, and etched using a halftone mask to form the organic film and the support pillar; The height of the support column in the direction perpendicular to the plane of the substrate is greater than the thickness of the organic film.

9. A display device, characterized in that, Includes the display panel as described in any one of claims 1-6.

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