Display panel

Abstract

An embodiment of the present application provides a display panel; the display panel includes a substrate, a light-emitting functional layer, an encapsulation layer and a protective insulating layer. In the second region, the first inorganic layer and the second inorganic layer are in contact, and a stress adjustment portion is provided between the protective insulating layer and the second inorganic layer. The stress adjustment portion can improve the adhesion between the stress adjustment portion and other film layers, and the stress adjustment portion can reduce the step difference between the film layers in the first region and the second region. The stress adjustment portion can reduce stress and avoid the problem of peeling between adjacent film layers due to stress concentration.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices are widely used due to their advantages such as self-luminescence and flexibility. In order to reduce the influence of external reflected light, existing OLED display devices will set a polarizer on the OLED display device. However, due to the large thickness of the polarizer, the emitted light of the OLED display device will be absorbed, resulting in low light efficiency and high power consumption. In response to the problems of OLED display devices using polarizers, a depolarizer (Pol Less Panel, PLP) technology is proposed. By replacing the polarizer with a black matrix and color resistance, the external reflected light is reduced while improving the transmittance of the OLED display device. At the same time, in order to realize the camera function, the OLED display device will be set to use O-cut technology to dig holes to improve the transmittance of the camera setting area. However, in actual use, it is found that due to the large difference between the film layer design of the O-cut area and the film layer design of other areas, peeling is easy to occur between the adjacent film layers in the O-cut area, resulting in a low yield of the display device.

[0003] Therefore, existing OLED display devices have a technical problem in which adjacent film layers in the O-cut region are prone to peeling. Summary of the Invention

[0004] The embodiments of the present application provide a display panel to solve the technical problem of easy peeling between adjacent film layers in an O-cut area in existing OLED display devices.

[0005] To achieve the above-mentioned object, according to a first aspect of the present application, a display panel is provided, comprising a display area and a special-shaped area, wherein the display area is provided on at least one side of the special-shaped area, and the display panel comprises:

[0006] substrate;

[0007] A light-emitting functional layer is provided on one side of the substrate;

[0008] an encapsulation layer, disposed on a side of the light-emitting functional layer away from the substrate, the encapsulation layer comprising a first inorganic layer, an organic layer, and a second inorganic layer, wherein the second inorganic layer is disposed on a side of the first inorganic layer away from the light-emitting functional layer;

[0009] a protective insulating layer, disposed on a side of the encapsulation layer away from the light-emitting functional layer;

[0010] In which, the display panel also includes a stress adjustment part, the special-shaped area includes a first area and a second area, the second area is arranged between the display area and the first area, within the display area and the first area, the organic layer is arranged between the first inorganic layer and the second inorganic layer, within the second area, the first inorganic layer is in contact with the second inorganic layer, and the stress adjustment part is provided between the protective insulating layer and the second inorganic layer.

[0011] Optionally, the display panel also includes a touch layer, which is arranged between the protective insulating layer and the encapsulation layer. The touch layer includes a touch insulating layer. In the second region, the stress adjustment part is provided between the touch insulating layer and the second inorganic layer, and / or the stress adjustment part is provided between the touch insulating layer and the protective insulating layer.

[0012] Optionally, in the second region, the touch insulating layer contacts the second inorganic layer, and the stress adjustment portion is provided between the touch insulating layer and the protective insulating layer.

[0013] Optionally, the display panel further includes a filter layer, which is arranged between the touch layer and the protective insulating layer. The filter layer includes a black matrix layer and a color resist layer, and at least one of the black matrix layer and the color resist layer includes the stress adjustment part.

[0014] Optionally, the black matrix layer includes a black matrix and the stress adjustment portion, the black matrix is ​​disposed in the display area, and a thickness of the black matrix is ​​greater than a thickness of the stress adjustment portion.

[0015] Optionally, the color resist layer includes a first color resist, a second color resist, and a third color resist having different light-transmitting colors, and at least one of the first color resist, the second color resist, and the third color resist includes the stress adjustment portion.

[0016] Optionally, the stress adjustment portion contacts a sidewall of the touch insulation layer, and a thickness of the stress adjustment portion close to the sidewall of the touch insulation layer is greater than or equal to a thickness of the stress adjustment portion away from the sidewall of the touch insulation layer.

[0017] Optionally, the second area is arranged around the first area, and the stress adjustment part is arranged around the touch insulation layer in the first area; or the display panel includes a plurality of the stress adjustment parts, and the plurality of stress adjustment parts are arranged at intervals in the second area.

[0018] Optionally, in the second region, the stress adjustment portion is provided between the touch insulating layer and the second inorganic layer, and the touch insulating layer is in contact with the protective insulating layer.

[0019] Optionally, the stress adjustment portion includes a first stress adjustment portion and a second stress adjustment portion. In the second region, the first stress adjustment portion is arranged between the touch insulation layer and the second inorganic layer, and the second stress adjustment portion is arranged between the touch insulation layer and the protective insulation layer.

[0020] An embodiment of the present application provides a display panel; the display panel includes a substrate, a light-emitting functional layer, an encapsulation layer and a protective insulating layer. In the second region, the first inorganic layer and the second inorganic layer are in contact, and a stress adjustment portion is provided between the protective insulating layer and the second inorganic layer. The stress adjustment portion can improve the adhesion between the stress adjustment portion and other film layers, and the stress adjustment portion can reduce the step difference between the film layers in the first region and the second region. The stress adjustment portion can reduce stress and avoid the problem of peeling between adjacent film layers due to stress concentration.

[0021] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0024] Figure 1 A schematic diagram of a comparative display device provided in an embodiment of the present application.

[0025] Figure 2 A schematic plan view of a display panel provided in an embodiment of the present application.

[0026] Figure 3 for Figure 2 A first cross-sectional view of A1-A2 of the display panel in FIG.

[0027] Figure 4 for Figure 2 B1-B2 cross-sectional view of the display panel.

[0028] Figure 5 for Figure 2 A second cross-sectional view of A1-A2 of the display panel in FIG.

[0029] Figure 6 for Figure 2A third cross-sectional view of A1-A2 of the display panel in FIG. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] In order to illustrate the principle of the technical problem of the embodiment of the present application, a comparative display device is provided. It is understood that the comparative display device cannot be regarded as the prior art of the present application. Figure 1 As shown, the comparative display device includes an array film 11, a light-emitting film 12, a first inorganic encapsulation film 131, an organic encapsulation film 132, a second inorganic encapsulation film 133, a touch insulating film 14, a filter film 15, and a passivation film 16. The organic encapsulation film 132 is used to fill the O-cut area 172. At the same time, to ensure the effectiveness of blocking water and oxygen, no organic encapsulation film is provided in the O-cut area near the display area 171. Instead, the first inorganic encapsulation film 131 and the second inorganic encapsulation film 133 are in direct contact, blocking the water and oxygen intrusion path and improving the water and oxygen barrier stability. However, in actual use, it was found that the film layers in the area without the organic encapsulation film 132 were prone to peeling. This is because the film layers in the area without the organic encapsulation film are all inorganic film layers, and the adhesion between the film layers is weak, resulting in stress release, stress concentration, and then peeling between adjacent film layers, resulting in a low yield of the display device. Therefore, existing OLED display devices have the technical problem of peeling between adjacent film layers in the O-cut area.

[0032] In order to solve the above technical problems, the embodiments of the present application provide a display panel and a display device to solve the above technical problems.

[0033] Figure 2 A schematic plan view of a display panel provided in an embodiment of the present application. Figure 3 for Figure 2 A first cross-sectional view of A1-A2 of the display panel in FIG. Figure 4 for Figure 2 B1-B2 cross-sectional view of the display panel.

[0034] Figure 5 for Figure 2 A second cross-sectional view of A1-A2 of the display panel in FIG. Figure 6 for Figure 2 A third cross-sectional view of A1-A2 of the display panel in FIG.

[0035] like Figures 2 to 6 As shown, an embodiment of the present application provides a display panel 2, which includes a display area 21 and a special-shaped area 22, wherein the display area 21 is arranged on at least one side of the special-shaped area 22, and the display panel 2 includes a substrate 31, a light-emitting functional layer 34, an encapsulation layer 35, and a protective insulating layer 38. The light-emitting functional layer 34 is arranged on one side of the substrate 31, and the encapsulation layer 35 is arranged on a side of the light-emitting functional layer 34 away from the substrate 31. The encapsulation layer 35 includes a first inorganic layer 351, an organic layer 352, and a second inorganic layer 353. The second inorganic layer 353 is arranged on a side of the first inorganic layer 351 away from the light-emitting functional layer 34, and the protective insulating layer 38 is arranged on a side of the encapsulation layer 35 away from the light-emitting functional layer 34.

[0036] In which, the display panel 2 also includes a stress adjustment portion 41, the special-shaped area 22 includes a first area 221 and a second area 222, the second area 222 is arranged between the display area 21 and the first area 221, and in the display area 21 and the first area 221, the organic layer 352 is arranged between the first inorganic layer 351 and the second inorganic layer 353, in the second area 222, the first inorganic layer 351 is in contact with the second inorganic layer 353, and the stress adjustment portion 41 is provided between the protective insulating layer 38 and the second inorganic layer 353.

[0037] An embodiment of the present application provides a display panel; the display panel includes a substrate, a light-emitting functional layer, an encapsulation layer and a protective insulating layer. In the second region, the first inorganic layer and the second inorganic layer are in contact, and a stress adjustment portion is provided between the protective insulating layer and the second inorganic layer. The stress adjustment portion can improve the adhesion between the stress adjustment portion and other film layers, and the stress adjustment portion can reduce the step difference between the film layers in the first region and the second region. The stress adjustment portion can reduce stress and avoid the problem of peeling between adjacent film layers due to stress concentration.

[0038] In some embodiments, as Figures 2 to 6 As shown, the display panel 2 also includes a touch layer 36 arranged between the protective insulating layer 38 and the encapsulation layer 35, the touch layer 36 includes a touch insulating layer 365, and in the second area 222, the first inorganic layer 351 is in contact with the second inorganic layer 353, and the stress adjustment part 41 is provided between the touch insulating layer 365 and the second inorganic layer 353, and / or the stress adjustment part 41 is provided between the touch insulating layer 365 and the protective insulating layer 38.

[0039] An embodiment of the present application provides a display panel; the display panel is provided with a stress adjustment portion, so that in the second region, a stress adjustment portion is provided between the touch insulating layer and the second inorganic layer, and / or a stress adjustment portion is provided between the touch insulating layer and the protective insulating layer. The stress adjustment portion can improve the adhesion between the stress adjustment portion and other film layers, and the stress adjustment portion can reduce the step difference between the film layers in the first region and the second region. The stress adjustment portion can reduce stress and avoid the problem of peeling between adjacent film layers due to stress concentration.

[0040] Specifically, the adhesion between the stress adjustment part and the touch insulating layer is greater than the adhesion between the touch insulating layer and the second inorganic layer, and the adhesion between the stress adjustment part and the second inorganic layer is greater than the adhesion between the touch insulating layer and the second inorganic layer.

[0041] Specifically, the adhesion between the stress adjustment part and the touch insulating layer is greater than the adhesion between the touch insulating layer and the protective insulating layer, and the adhesion between the stress adjustment part and the protective insulating layer is greater than the adhesion between the touch insulating layer and the protective insulating layer.

[0042] Specifically, the material of the stress adjustment part may be an organic material.

[0043] Specifically, in the embodiment of the present application, the special-shaped area may not be displayed, and electronic components such as an under-screen camera or sensor may be installed in the special-shaped area. To improve the light transmittance of the special-shaped area, the first area may not be provided with metal traces, and the second area may be provided with some metal traces.

[0044] In some embodiments, as Figure 3 As shown, within the second region 222, the touch insulation layer 365 contacts the second inorganic layer 353, and a stress adjustment portion 41 is provided between the touch insulation layer 365 and the protective insulation layer 38. By providing the stress adjustment portion between the touch insulation layer and the protective insulation layer within the second region, the adhesion between the stress adjustment portion and the touch insulation layer is greater than the adhesion between the touch insulation layer and the protective insulation layer, and the adhesion between the stress adjustment portion and the protective insulation layer is greater than the adhesion between the touch insulation layer and the protective insulation layer. This can increase the adhesion between the touch insulation layer, the stress adjustment portion, and adjacent film layers in the protective insulation layer. Furthermore, the stress adjustment portion can reduce the step difference between the film layers within the second region and the film layers within the first region. The stress adjustment portion can buffer stress, thereby reducing stress and preventing stress concentration from causing delamination between the touch insulation layer and the protective insulation layer, thereby improving the yield of the display panel.

[0045] In some embodiments, as Figure 3 、 Figure 4As shown, the display panel 2 further includes a filter layer 37 disposed between the touch layer 36 and the protective insulating layer 38. The filter layer 37 includes a black matrix layer 371 and a color resist layer 372. At least one of the black matrix layer 371 and the color resist layer 372 includes the stress adjustment portion 41. By including the stress adjustment portion in at least one of the black matrix layer and the color resist layer, there is no need to provide a new film layer to form the stress adjustment portion, thus reducing the number of process steps for the display panel and improving the efficiency of display panel production. Furthermore, the black matrix and color resist in the filter layer can be formed using organic photoresist, which has a certain degree of flexibility. Therefore, when the stress adjustment portion is formed using at least one of the black matrix layer and the color resist layer, the adhesion of the stress adjustment portion to the film layer in contact with it can be improved, and stress can be buffered, reduced, and stress concentration can be avoided.

[0046] In some embodiments, as Figure 3 、 Figure 4 As shown, the black matrix layer 371 includes a black matrix 371a and the stress adjustment portion 41. The black matrix 371a is disposed within the display area 21. The thickness H1 of the black matrix 371a is greater than the thickness of the stress adjustment portion 41 (for example, the thickness H2 of the stress adjustment portion near the sidewall of the touch insulation layer 365). By forming the stress adjustment portion in the black matrix layer, the adhesion of the stress adjustment portion to the film layer in contact with it can be improved, and stress can be buffered, reduced, and stress concentration can be avoided. Moreover, when the black matrix and stress adjustment portion are formed in one process, the thickness of the stress adjustment portion after exposure is thinner than that of the black matrix in the display area because the terrain in the area where the stress adjustment portion is located is lower than that of the black matrix in the display area.

[0047] Specifically, since the adhesion between the black matrix layer and other film layers is greater than the adhesion between the color resist layer and other film layers, the black matrix layer can be used to form a stress adjustment portion to improve the adhesion between the stress adjustment portion and other film layers. The black matrix is ​​a negative photoresist, that is, the exposed portion remains on the display panel, and the terrain of the second area is lower than that of the display area, and the exposure energy received is less, so that the thickness of the portion remaining after the exposure reaction is smaller than the thickness of the portion remaining in the display area, that is, the thickness of the stress adjustment portion is less than the thickness of the black matrix.

[0048] Specifically, it can be understood that the stress adjustment part and the black matrix are formed by the same film layer. In order to distinguish the black matrices in different areas and to illustrate the design of the second area, different names are used here. In fact, the stress adjustment part is also the black matrix.

[0049] Specifically, a black matrix is ​​provided in the second area to reduce the reflectivity of the irregularly shaped area and improve the display effect.

[0050] In some embodiments, as Figure 3 、 Figure 4 As shown, the color resist layer 372 includes a first color resist 372a, a second color resist 372b, and a third color resist (not shown) having different light-transmitting colors. At least one of the first color resist 372a, the second color resist 372b, and the third color resist includes the stress adjustment portion 41. By forming the stress adjustment portion in the color resist layer, at least one of the first color resist, the second color resist, and the third color resist includes the stress adjustment portion, which can improve the adhesion of the film layer in contact with the stress adjustment portion, and can buffer stress, reduce stress, and avoid stress concentration.

[0051] Specifically, it can be understood that the stress adjustment part is formed simultaneously with at least one of the first color resistor, the second color resistor and the third color resistor. In order to distinguish the color resistors in different areas and to illustrate the design of the second area, different names are used here. In fact, the stress adjustment part is also a color resistor. For example, when the first color resistor includes the stress adjustment part, the stress adjustment part is also a color resistor in the first color resistor, and its light-transmitting color is the same as that of the first color resistor.

[0052] Specifically, when one color resist is used to form the stress adjustment portion, the first color resist may include the stress adjustment portion, the second color resist may include the stress adjustment portion, or the third color resist may include the stress adjustment portion; when two color resists are used to form the stress adjustment portion, the first color resist and the second color resist may respectively form partial stress adjustment portions, or the first color resist and the third color resist may respectively form partial stress adjustment portions, or the second color resist and the third color resist may respectively form partial stress adjustment portions; when three color resists are used to form the stress adjustment portion, the first color resist, the second color resist and the third color resist may respectively form partial stress adjustment portions.

[0053] Specifically, the light-transmitting colors of the first color resistor, the second color resistor, and the third color resistor are red, green, and blue, respectively, but the embodiments of the present application are not limited thereto, and the setting positions of the color resistors can be changed. For example, the light-transmitting colors of the first color resistor, the second color resistor, and the third color resistor can be red, blue, and green, respectively.

[0054] Specifically, the above embodiments are described using the black matrix or color resist as an example to form the stress adjustment portion, but the embodiments of the present application are not limited to this. The black matrix and the color resist can respectively form parts of the stress adjustment portion. For example, the display panel includes multiple stress adjustment portions, the black matrix can form a partial stress adjustment portion, the color resist can form a partial stress adjustment portion, and different color resists can respectively form partial stress adjustment portions.

[0055] In some embodiments, as Figure 3As shown, the stress adjustment portion 41 contacts the sidewall of the touch insulation layer 365. The thickness H2 of the stress adjustment portion 41 near the sidewall of the touch insulation layer 365 is greater than or equal to the thickness H3 of the stress adjustment portion 41 away from the sidewall of the touch insulation layer 365. By making the stress adjustment portion contact the sidewall of the touch insulation layer, the stress adjustment portion can buffer stress at the corners of the touch insulation layer. The thickness of the stress adjustment portion near the sidewall of the touch insulation layer is greater than that of the stress adjustment portion away from the sidewall of the touch insulation layer. As a result, the stress adjustment portion near the sidewall of the touch insulation layer has a greater stress buffering effect than the stress adjustment portion away from the sidewall of the touch insulation layer, thus preventing delamination of the film layers at the corners and improving the yield of the display panel.

[0056] Specifically, at the corners of the touch insulating layer and the protective insulating layer, since stress is more likely to be concentrated there, causing the film layer to peel off at this location, the embodiment of the present application can make the thickness of the stress adjustment portion close to the side wall of the touch insulating layer greater than the thickness of the stress adjustment portion away from the side wall of the touch insulating layer, thereby increasing the adhesion between the stress adjustment portion and the touch insulating layer, and increasing the adhesion between the stress adjustment portion and the protective insulating layer, so that the adhesion between the film layers at the corners of the touch insulating layer and the protective insulating layer is greater, thereby avoiding peeling of the film layers at the corners and improving the yield of the display panel.

[0057] In some embodiments, as Figures 2 to 6 As shown, the second region 222 is arranged around the first region 221, and the stress adjustment portion 41 is arranged around the touch insulation layer 365 in the first region 221; or the display panel 2 includes multiple stress adjustment portions 41, and the multiple stress adjustment portions 41 are arranged at intervals in the second region 222. When arranging the stress adjustment portions, the stress adjustment portions can be arranged continuously in the second region and arranged around the touch insulation layer. The stress adjustment portions can then release and buffer stress at various locations in the second region, and increase the adhesion between the various film layers in the second region, thereby preventing peeling between the touch insulation layer and the protective insulation layer. Alternatively, the stress adjustment portions can be arranged at intervals in the second region, and the stress adjustment portions can buffer and release stress at various locations, and increase the adhesion between the various film layers at various locations, thereby preventing peeling between the touch insulation layer and the protective insulation layer.

[0058] Specifically, the above embodiment is described by taking the second area surrounding the first area as an example. It can be understood that the special-shaped area can be set in the middle area of ​​the display panel or in the edge area of ​​the display panel. When the special-shaped area is set in the edge area of ​​the display panel, the second area can be set only on both sides of the first area.

[0059] In some embodiments, as Figure 5 As shown, within the second region 222, the stress adjustment portion 41 is provided between the touch insulation layer 365 and the second inorganic layer 353, and the touch insulation layer 365 contacts the protective insulation layer 38. By providing the stress adjustment portion between the touch insulation layer and the second inorganic layer within the second region, the adhesion between the stress adjustment portion and the touch insulation layer is greater than the adhesion between the touch insulation layer and the second inorganic layer, and the adhesion between the stress adjustment portion and the second inorganic layer is greater than the adhesion between the touch insulation layer and the second inorganic layer. This can increase the adhesion between the touch insulation layer, the second inorganic layer, and the adjacent film layers of the stress adjustment portion. The stress adjustment portion can also reduce the step difference between the film layers in the second region and the film layers in the first region. The stress adjustment portion can buffer stress, thereby reducing stress and preventing stress concentration from causing delamination between the touch insulation layer and the second inorganic layer, thereby improving the yield of the display panel.

[0060] Specifically, the display panel may include a stress adjustment layer, which is disposed between the second inorganic layer and the touch insulating layer, and the stress adjustment layer includes a stress adjustment portion.

[0061] In some embodiments, the stress adjustment portion contacts the side wall of the second inorganic layer, and the thickness of the stress adjustment portion close to the side wall of the second inorganic layer is greater than or equal to the thickness of the stress adjustment portion away from the side wall of the second inorganic layer. By making the stress adjustment portion contact the side wall of the second inorganic layer, the stress adjustment portion can buffer the stress at the corner of the second inorganic layer, and the thickness of the stress adjustment portion close to the side wall of the second inorganic layer is greater than the thickness of the stress adjustment portion away from the side wall of the second inorganic layer. Therefore, the stress adjustment portion close to the side wall of the second inorganic layer has a better buffering effect on the stress than the stress adjustment portion away from the side wall of the second inorganic layer, thereby preventing the film layers from peeling off at the corners and improving the yield of the display panel.

[0062] Specifically, at the corner between the touch insulating layer and the second inorganic layer, since stress is more easily concentrated here, causing the film layer to peel off at this place, the embodiment of the present application can make the thickness of the stress adjustment part close to the side wall of the second inorganic layer greater than the thickness of the stress adjustment part away from the side wall of the second inorganic layer, thereby increasing the adhesion between the stress adjustment part and the second inorganic layer, and increasing the adhesion between the stress adjustment part and the touch insulating layer, so that the adhesion between the film layers at the corner of the touch insulating layer and the second inorganic layer is greater, avoiding the peeling of the film layers at the corner, and improving the yield of the display panel.

[0063] In some embodiments, the second region is arranged around the first region, and the stress adjustment portion is arranged around the second inorganic layer in the first region; or the display panel includes a plurality of stress adjustment portions, and the plurality of stress adjustment portions are arranged at intervals within the second region. When arranging the stress adjustment portions, the stress adjustment portions can be arranged continuously within the second region, and the stress adjustment portions can be arranged around the second inorganic layer. In this way, the stress adjustment portions can be used to release and buffer stress at various locations within the second region, and the adhesion between the various film layers within the second region can be increased, thereby preventing peeling between the touch insulating layer and the second inorganic layer. The stress adjustment portions can also be arranged at intervals within the second region, and the stress adjustment portions can be used to buffer and release stress at various locations, and the adhesion between the various film layers at various locations can be increased, thereby preventing peeling between the touch insulating layer and the second inorganic layer.

[0064] In some embodiments, as Figure 6 As shown, the stress adjustment portion 41 includes a first stress adjustment portion 411 and a second stress adjustment portion 412. In the second region 222, the first stress adjustment portion 411 is disposed between the touch insulation layer 365 and the second inorganic layer 353, and the second stress adjustment portion 412 is disposed between the touch insulation layer 365 and the protective insulation layer 38. By making the stress adjustment portion include the first stress adjustment portion and the second stress adjustment portion, in the second region, the first stress adjustment portion is disposed between the touch insulation layer and the second inorganic layer, and the second stress adjustment portion is disposed between the touch insulation layer and the protective insulation layer. The adhesion between the first stress adjustment portion and the touch insulation layer is greater than the adhesion between the touch insulation layer and the second inorganic layer, the adhesion between the first stress adjustment portion and the second inorganic layer is greater than the adhesion between the touch insulation layer and the second inorganic layer, the adhesion between the second stress adjustment portion and the touch insulation layer is greater than the adhesion between the touch insulation layer and the protective insulation layer, and the adhesion between the second stress adjustment portion and the protective insulation layer is greater than the adhesion between the touch insulation layer and the protective insulation layer. Greater than the adhesion between the touch insulating layer and the protective insulating layer, the adhesion between the touch insulating layer, the second inorganic layer and the adjacent film layers in the first stress adjustment part can be increased, and the adhesion between the touch insulating layer, the second stress adjustment part and the adjacent film layers in the protective insulating layer can be increased, and the first stress adjustment part and the second stress adjustment part can reduce the step difference between the film layer in the second area and the film layer in the first area. The first stress adjustment part and the second stress adjustment part can buffer the stress, thereby reducing the stress, avoiding stress concentration causing peeling between the touch insulating layer and the second inorganic layer, avoiding stress concentration causing peeling between the touch insulating layer and the protective insulating layer, and improving the yield of the display panel.

[0065] Specifically, the design of the first stress adjustment part can refer to the design of the stress adjustment part located between the second inorganic layer and the touch insulating layer in the above embodiment, and the design of the second stress adjustment part can refer to the design of the stress adjustment part located between the touch insulating layer and the protective insulating layer in the above embodiment, which will not be repeated here.

[0066] Specifically, such as Figure 2 As shown, the display area 21 can be arranged around the special-shaped area 22, and the display area can also be arranged around the special-shaped area on two sides or three sides.

[0067] Specifically, such as Figure 4 As shown, the substrate 31 includes a first flexible layer 311 , a first barrier layer 312 , a second flexible layer 313 and a second barrier layer 314 .

[0068] Specifically, such as Figure 4 As shown, the display panel 2 further includes a driving circuit layer 32, which includes a buffer layer 321, an active layer 322, a first gate insulating layer 323, a first gate layer 324, a second gate insulating layer 325, a second gate layer 326, an interlayer insulating layer 327, a first source and drain electrode layer 328, a first planarizing layer 329, a second source and drain electrode layer 331, and a second planarizing layer 332. Specifically, it is understood that thin-film transistors and wirings are provided in the display area 21 to achieve normal display of each sub-pixel, while in the special-shaped area 22, since display is not required in the special-shaped area 22, the driving circuit layer 32 in the special-shaped area 22 may only include a portion of the insulating layer and a portion of the metal layer, and no thin-film transistors are required.

[0069] Specifically, for example, within the second region of the heteromorphic region 22, the driver circuit layer 32 includes a first gate insulating layer, a second gate insulating layer, an interlayer insulating layer, a second planarizing layer, and a portion of the metal layer. The second planarizing layer can form a barrier to prevent overflow of the organic layer during formation. Within the first region of the heteromorphic region 22, the driver circuit layer includes a first gate insulating layer, a second gate insulating layer, an interlayer insulating layer, and a second planarizing layer. The second planarizing layer can form a barrier to prevent overflow of the organic layer during formation.

[0070] Specifically, such as Figure 4 As shown, the light-emitting functional layer 34 includes a pixel electrode layer 341, a pixel definition layer 342, a light-emitting material layer 343, and a common electrode layer 344. To achieve normal display of each sub-pixel, the display area 21 includes a complete display device structure. However, since the special-shaped area 22 does not require display, it can only include the entire film layer of the light-emitting functional layer, and for example, can only include the entire film layer of the light-emitting material layer 343.

[0071] Specifically, such as Figure 4As shown, the touch layer 36 includes a touch insulation layer 365, a first touch metal layer 362, and a second touch metal layer 364. The touch insulation layer 365 includes a first touch insulation layer 361 and a second touch insulation layer 363. It is understood that, depending on the design of the touch layer, the touch insulation layer may have only one layer or multiple layers. When the touch layer has only one layer, one touch insulation layer is provided in the irregularly shaped area. When the touch layer has multiple layers, multiple touch insulation layers are provided in the irregularly shaped area. However, since the touch insulation layers are made of the same material, direct contact between the multiple touch insulation layers is less likely to cause peeling. Therefore, there is no need to provide a stress adjustment portion between the touch insulation layers. However, the embodiments of the present application are not limited thereto, and stress adjustment portions may be provided between the touch insulation layers.

[0072] Specifically, the first inorganic layer, the second inorganic layer, the touch insulating layer and the protective insulating layer may be made of inorganic layers, and the second inorganic layer and the touch insulating layer may be made of different materials, and the touch insulating layer and the protective insulating layer may be made of different materials.

[0073] Specifically, the display panel further includes an adhesive layer and a cover plate. The adhesive layer is arranged on a side of the protective insulating layer away from the filter layer, and the cover plate is arranged on a side of the adhesive layer away from the protective insulating layer.

[0074] The above embodiments provide a detailed description of the display panel from the perspective of the various film layers and the relative relationships between them. It is understood that when there is no conflict between the various embodiments, the various embodiments may be combined. For example, the black matrix layer includes a black matrix and the stress adjustment portion. The black matrix is ​​disposed within the display area. The thickness of the black matrix is ​​greater than the thickness of the stress adjustment portion. The stress adjustment portion contacts the sidewall of the touch insulation layer. The thickness of the stress adjustment portion proximate the sidewall of the touch insulation layer is greater than or equal to the thickness of the stress adjustment portion distal to the sidewall of the touch insulation layer.

[0075] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments.

[0076] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0077] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0079] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a special-shaped area, wherein the display area is provided on at least one side of the special-shaped area, and the display panel comprises: substrate; A light-emitting functional layer is provided on one side of the substrate; an encapsulation layer, disposed on a side of the light-emitting functional layer away from the substrate, the encapsulation layer comprising a first inorganic layer, an organic layer, and a second inorganic layer, wherein the second inorganic layer is disposed on a side of the first inorganic layer away from the light-emitting functional layer; a protective insulating layer, disposed on a side of the encapsulation layer away from the light-emitting functional layer; In which, the display panel also includes a stress adjustment part, the special-shaped area includes a first area and a second area, the second area is arranged between the display area and the first area, within the display area and the first area, the organic layer is arranged between the first inorganic layer and the second inorganic layer, within the second area, the first inorganic layer is in contact with the second inorganic layer, and the stress adjustment part is provided between the protective insulating layer and the second inorganic layer.

2. The display panel according to claim 1, wherein: The display panel also includes a touch layer, which is arranged between the protective insulating layer and the encapsulation layer. The touch layer includes a touch insulating layer. In the second region, the stress adjustment part is provided between the touch insulating layer and the second inorganic layer, and / or the stress adjustment part is provided between the touch insulating layer and the protective insulating layer.

3. The display panel according to claim 2, wherein: In the second region, the touch insulating layer contacts the second inorganic layer, and the stress adjustment portion is provided between the touch insulating layer and the protective insulating layer.

4. The display panel according to claim 3, wherein: The display panel further includes a filter layer, which is arranged between the touch layer and the protective insulating layer. The filter layer includes a black matrix layer and a color resist layer. At least one of the black matrix layer and the color resist layer includes the stress adjustment portion.

5. The display panel according to claim 4, wherein: The black matrix layer includes a black matrix and the stress adjustment portion. The black matrix is ​​disposed in the display area. The thickness of the black matrix is ​​greater than the thickness of the stress adjustment portion.

6. The display panel according to claim 4, wherein: The color resist layer includes a first color resist, a second color resist, and a third color resist having different light-transmitting colors, and at least one of the first color resist, the second color resist, and the third color resist includes the stress adjustment portion.

7. The display panel according to claim 3, wherein: The stress adjustment portion contacts the sidewall of the touch insulation layer, and a thickness of the stress adjustment portion close to the sidewall of the touch insulation layer is greater than or equal to a thickness of the stress adjustment portion away from the sidewall of the touch insulation layer.

8. The display panel according to claim 3, wherein: The second area is arranged around the first area, and the stress adjustment part is arranged around the touch insulation layer in the first area; or the display panel includes a plurality of stress adjustment parts, and the plurality of stress adjustment parts are arranged at intervals in the second area.

9. The display panel according to claim 2, wherein: In the second region, the stress adjustment portion is provided between the touch insulating layer and the second inorganic layer, and the touch insulating layer is in contact with the protective insulating layer.

10. The display panel according to claim 2, wherein: The stress adjustment portion includes a first stress adjustment portion and a second stress adjustment portion. In the second region, the first stress adjustment portion is arranged between the touch insulation layer and the second inorganic layer, and the second stress adjustment portion is arranged between the touch insulation layer and the protective insulation layer.

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