Display panel

Abstract

The embodiment of the invention provides a display panel. The display panel comprises a substrate, a light-emitting functional layer, a packaging layer and a protective insulating layer, in a second area, a first inorganic layer is in contact with a second inorganic layer, a stress adjusting part is arranged between the protective insulating layer and the second inorganic layer, the adhesive force between the stress adjusting part and other film layers can be improved through the stress adjusting part, and the display effect is improved. And the stress adjusting part can reduce the segment difference between the film layers of the first region and the second region, and the stress adjusting part can reduce the stress, so that the problem of stripping between the adjacent film layers caused by stress concentration is avoided.

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 view of the problems existing in OLED display devices using polarizers, a depolarizer (Pol Less Panel, PLP) technology is proposed. By replacing the polarizer with a black matrix and a color resistor, the external reflected light is reduced while the light transmittance of the OLED display device is improved. 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 light 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, it is easy to peel off between the adjacent film layers in the O-cut area, resulting in a low yield of the display device.

[0003] Therefore, the existing OLED display device has a technical problem that adjacent film layers in the O-cut area are prone to peeling. Summary of the invention

[0004] The embodiment of the present application provides a display panel to solve the technical problem that peeling easily occurs between adjacent film layers in an O-cut area of ​​a conventional OLED display device.

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

[0006] substrate;

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

[0008] an encapsulation layer, arranged 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, the second inorganic layer being arranged 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] Among them, 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, and 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 disposed 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 portion.

[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 side wall of the touch insulation layer, and a thickness of the stress adjustment portion close to the side wall of the touch insulation layer is greater than or equal to a thickness of the stress adjustment portion away from the side wall of the touch insulation layer.

[0017] Optionally, the second region is arranged around the first region, and the stress adjustment portion is arranged around the touch insulating layer in the first region; or the display panel includes a plurality of the stress adjustment portions, and the plurality of the stress adjustment portions are arranged at intervals in the second region.

[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 part includes a first stress adjustment part and a second stress adjustment part, and in the second region, the first stress adjustment part is arranged between the touch insulation layer and the second inorganic layer, and the second stress adjustment part 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 is in contact with the second inorganic layer, 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 of 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 specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[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 figure 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 in FIG.

[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 technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than 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 understandable that the comparative display device cannot be used 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. In the O-cut area 172, the organic encapsulation film 132 is used for filling. At the same time, in order to ensure the effect of blocking water and oxygen, the organic encapsulation film will not be set in the area close to the display area 171 in the O-cut area, but the first inorganic encapsulation film 131 and the second inorganic encapsulation film 133 are in direct contact to block the water and oxygen invasion path and improve the water and oxygen barrier stability. However, in actual use, it is found that the area where the organic encapsulation film 132 is not set is prone to film peeling. This is because the film layers in the area where the organic encapsulation film is not set are all inorganic film layers, and the adhesion between the film layers is small, resulting in stress that cannot be released, and stress concentration is prone to occur, and then peeling occurs between adjacent film layers, resulting in a low yield of the display device. Therefore, the existing OLED display device has a technical problem that the adjacent film layers in the O-cut area are prone to peeling.

[0032] In view of 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 in FIG.

[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, the display panel 2 includes a display area 21 and a special-shaped area 22, the display area 21 is arranged on at least one side of the special-shaped area 22, 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, 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] Among them, the display panel 2 also includes a stress adjustment part 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 part 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 is in contact with the second inorganic layer, 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 of 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, 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 region 222, the first inorganic layer 351 is in contact with the second inorganic layer 353, 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 part, so that in the second region, a stress adjustment part is provided between the touch insulating layer and the second inorganic layer, and / or a stress adjustment part is provided between the touch insulating layer and the protective insulating layer. The adhesion between the stress adjustment part and other film layers can be improved by the stress adjustment part, and the stress adjustment part can reduce the step difference of the film layer in the first region and the second region. The stress adjustment part 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 set in the special-shaped area. In order to improve the light transmittance of the special-shaped area, the first area may not be provided with metal wiring, and the second area may be provided with some metal wiring.

[0044] In some embodiments, Figure 3 As shown, in the second region 222, the touch insulation 365 is in contact with the second inorganic layer 353, and a stress adjustment part 41 is provided between the touch insulation layer 365 and the protective insulation layer 38. By providing a stress adjustment part between the touch insulation layer and the protective insulation layer in the second region, the adhesion between the stress adjustment part 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 part and the protective insulation layer is greater than the adhesion between the touch insulation layer and the protective insulation layer, the adhesion between the touch insulation layer, the stress adjustment part and the adjacent film layers in the protective insulation layer can be increased, and the stress adjustment part can reduce the step difference between the film layer in the second region and the film layer in the first region, and the stress adjustment part can buffer the stress, thereby reducing the stress, avoiding the peeling between the touch insulation layer and the protective insulation layer caused by stress concentration, and improving the yield of the display panel.

[0045] In some embodiments, Figure 3 , Figure 4As shown, the display panel 2 further includes a filter layer 37, the filter layer 37 is 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, and at least one of the black matrix layer 371 and the color resist layer 372 includes the stress adjustment portion 41. By making at least one of the black matrix layer and the color resist layer include the stress adjustment portion, it is not necessary to set a new film layer to form the stress adjustment portion, thereby reducing the process steps of the display panel and improving the preparation efficiency of the display panel. The black matrix and the color resist in the filter layer can be formed by organic photoresist, which has a certain flexibility. When the stress adjustment portion is formed by at least one of the black matrix layer and the color resist layer, the adhesion of the film layer in contact with the stress adjustment portion can be improved, and the stress can be buffered, the stress can be reduced, and the stress concentration can be avoided.

[0046] In some embodiments, Figure 3 , Figure 4 As shown, the black matrix layer 371 includes a black matrix 371a and the stress adjustment part 41, the black matrix 371a is disposed in the display area 21, and the thickness H1 of the black matrix 371a is greater than the thickness of the stress adjustment part 41 (for example, the thickness H2 of the stress adjustment part close to the side wall of the touch insulating layer 365). By forming the stress adjustment part in the black matrix layer, the adhesion of the film layer in contact with the stress adjustment part can be improved, and the stress can be buffered, reduced, and stress concentration can be avoided. Moreover, when the black matrix and the stress adjustment part are formed in one process, since the terrain of the area where the stress adjustment part is located is lower than that of the black matrix in the display area, the thickness left after exposure is thinner than that of 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 part to improve the adhesion between the stress adjustment part and other film layers. The black matrix is ​​a negative photoresist, that is, the exposed part 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 part remaining after the exposure reaction is smaller than the thickness of the part remaining in the display area, that is, the thickness of the stress adjustment part 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, by providing a black matrix in the second area, the reflectivity of the irregular-shaped area can be reduced, thereby improving the display effect.

[0050] In some embodiments, 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) with different light-transmitting colors, and at least one of the first color resist 372a, the second color resist 372b and the third color resist includes the stress adjustment part 41. By forming the stress adjustment part 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 part, so that the adhesion of the film layer in contact with the stress adjustment part can be improved, and the stress can be buffered, the stress can be reduced, and the stress concentration can be avoided.

[0051] Specifically, it can be understood that the stress adjustment part is formed simultaneously with at least one of the first color resist, the second color resist and the third color resist. In order to distinguish the color resists 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 resist. For example, when the first color resist includes the stress adjustment part, the stress adjustment part is also a color resist in the first color resist, and its light-transmitting color is the same as that of the first color resist.

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

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

[0054] Specifically, the above-mentioned embodiments are described by taking the black matrix or color resist forming the stress adjustment part as an example, 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 part. For example, the display panel includes multiple stress adjustment parts, the black matrix can form a partial stress adjustment part, the color resist can form a partial stress adjustment part, and different color resists can respectively form partial stress adjustment parts.

[0055] In some embodiments, Figure 3As shown, the stress adjustment part 41 is in contact with the side wall of the touch insulation layer 365, and the thickness H2 of the stress adjustment part 41 close to the side wall of the touch insulation layer 365 is greater than or equal to the thickness H3 of the stress adjustment part 41 away from the side wall of the touch insulation layer 365. By making the stress adjustment part contact with the side wall of the touch insulation layer, the stress adjustment part can buffer the stress at the corner of the touch insulation layer, and the thickness of the stress adjustment part close to the side wall of the touch insulation layer is greater than the thickness of the stress adjustment part away from the side wall of the touch insulation layer, so that the stress adjustment part close to the side wall of the touch insulation layer has a better buffering effect on the stress than the stress adjustment part away from the side wall of the touch insulation layer, thereby preventing the peeling of each film layer at the corner 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 easily concentrated here and causes 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 touch insulating layer greater than the thickness of the stress adjustment part of the side wall away from the touch insulating layer, thereby increasing the adhesion between the stress adjustment part and the touch insulating layer, and increasing the adhesion between the stress adjustment part 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, Figures 2 to 6 As shown, the second region 222 is arranged around the first region 221, and the stress adjustment part 41 is arranged around the touch insulating layer 365 in the first region 221; or the display panel 2 includes a plurality of the stress adjustment parts 41, and the plurality of the stress adjustment parts 41 are arranged at intervals in the second region 222. When the stress adjustment parts are arranged, the stress adjustment parts can be arranged uninterruptedly in the second region, and the stress adjustment parts are arranged around the touch insulating layer, so that the stress adjustment parts can be used to release and buffer the stress at various locations in the second region, and the adhesion between the film layers in the second region can be increased, thereby avoiding peeling between the touch insulating layer and the protective insulating layer. The stress adjustment parts can also be arranged at intervals in the second region, and the stress adjustment parts can buffer and release the stress at various locations, and the adhesion between the film layers at various locations can be increased, thereby avoiding peeling between the touch insulating layer and the protective insulating 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, Figure 5 As shown, in the second region 222, the stress adjustment part 41 is provided between the touch insulating layer 365 and the second inorganic layer 353, and the touch insulating layer 365 is in contact with the protective insulating layer 38. By providing the stress adjustment part between the touch insulating layer and the second inorganic layer in the second region, 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, the adhesion between the touch insulating layer, the second inorganic layer and the adjacent film layers in the stress adjustment part can be increased, and the stress adjustment part can reduce the step difference between the film layer in the second region and the film layer in the first region, and the stress adjustment part can buffer the stress, thereby reducing the stress, avoiding the peeling between the touch insulating layer and the second inorganic layer caused by stress concentration, and improving the yield of the display panel.

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

[0061] In some embodiments, the stress adjustment part is in contact with the side wall of the second inorganic layer, and the thickness of the stress adjustment part close to the side wall of the second inorganic layer is greater than or equal to the thickness of the stress adjustment part away from the side wall of the second inorganic layer. By making the stress adjustment part contact with the side wall of the second inorganic layer, the stress adjustment part can buffer the stress at the corner of the second inorganic layer, and the thickness of the stress adjustment part close to the side wall of the second inorganic layer is greater than the thickness of the stress adjustment part away from the side wall of the second inorganic layer, so that the stress adjustment part close to the side wall of the second inorganic layer has a better buffering effect on the stress than the stress adjustment part away from the side wall of the second inorganic layer, thereby avoiding peeling of each film layer at the corner and improving the yield of the display panel.

[0062] Specifically, at the corner between the touch insulating layer and the second inorganic layer, since the stress is more easily concentrated here and causes 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 between the touch insulating layer and the second inorganic layer is greater, thereby avoiding 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 part is arranged around the second inorganic layer in the first region; or the display panel includes a plurality of the stress adjustment parts, and the plurality of the stress adjustment parts are arranged at intervals in the second region. When the stress adjustment parts are arranged, the stress adjustment parts can be arranged uninterruptedly in the second region, and the stress adjustment parts can be arranged around the second inorganic layer, so that the stress adjustment parts can release and buffer the stress at various locations in the second region, and the adhesion between the film layers in the second region can be increased, thereby avoiding peeling between the touch insulating layer and the second inorganic layer. The stress adjustment parts can also be arranged at intervals in the second region, and the stress adjustment parts can buffer and release the stress at various locations, and the adhesion between the film layers at various locations can be increased, thereby avoiding peeling between the touch insulating layer and the second inorganic layer.

[0064] In some embodiments, Figure 6 As shown, the stress adjustment part 41 includes a first stress adjustment part 411 and a second stress adjustment part 412. In the second region 222, the first stress adjustment part 411 is disposed between the touch insulating layer 365 and the second inorganic layer 353, and the second stress adjustment part 412 is disposed between the touch insulating layer 365 and the protective insulating layer 38. By making the stress adjustment part include the first stress adjustment part and the second stress adjustment part, in the second region, the first stress adjustment part is disposed between the touch insulating layer and the second inorganic layer, the second stress adjustment part is disposed between the touch insulating layer and the protective insulating layer, the adhesion between the first stress adjustment part and the touch insulating layer is greater than the adhesion between the touch insulating layer and the second inorganic layer, the adhesion between the first stress adjustment part and the second inorganic layer is greater than the adhesion between the touch insulating layer and the second inorganic layer, the adhesion between the second 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 second stress adjustment part and the protective insulating layer is greater than the adhesion between the touch insulating layer and the second inorganic layer. If the adhesion force is greater than that between the touch insulating layer and the protective insulating layer, the adhesion force 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 force between the touch insulating layer, the second stress adjustment part and the adjacent film layers in the protective insulating layer can be increased. 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, 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, 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, Figure 4 As shown, the display panel 2 further includes a driving circuit layer 32, and the driving circuit layer 32 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 can be understood that in order to realize the normal display of each sub-pixel in the display area 21, a thin film transistor and a wiring are arranged, and in the special-shaped area 22, since the special-shaped area 22 does not need to display, the driving circuit layer 32 in the special-shaped area 22 can only include a part of the insulating layer and a part of the metal layer, and no thin film transistor is required.

[0069] Specifically, for example, in the second region within the shaped region 22, the driving 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, and a retaining wall can be formed by the second planarizing layer to prevent the organic layer from overflowing during formation. In the first region of the shaped region 22, the driving circuit layer includes a first gate insulating layer, a second gate insulating layer, an interlayer insulating layer, and a second planarizing layer, and a retaining wall can be formed by the second planarizing layer to prevent the organic layer from overflowing during formation.

[0070] Specifically, 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. In order to realize the normal display of each sub-pixel, the display area 21 includes a complete display device structure, while the special-shaped area 22 does not need to display and can only include a film layer set in the entire light-emitting functional layer, and for example, can only include a film layer set in the entire light-emitting material layer 343.

[0071] Specifically, Figure 4As shown, the touch layer 36 includes a touch insulating layer 365, a first touch metal layer 362 and a second touch metal layer 364, and the touch insulating layer 365 includes a first touch insulating layer 361 and a second touch insulating layer 363. It can be understood that, according to different designs of the touch layer, the touch insulating layer of the touch layer can have only one layer or multiple layers. When there is only one touch insulating layer in the touch layer, one touch insulating layer will be provided in the irregular region. When there are multiple touch insulating layers in the touch layer, multiple touch insulating layers will be provided in the irregular region. However, considering that the materials of the touch insulating layers are the same, the multiple touch insulating layers are in direct contact and are not prone to peeling. Therefore, there is no need to provide a stress adjustment part between the touch insulating layers, but the embodiment of the present application is not limited thereto, and a stress adjustment part can be provided between the touch insulating layers.

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

[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 describe the display panel in detail from the perspective of the relative relationship between the various film layers and the various film layers. It is understandable that when there is no conflict between the various embodiments, the various embodiments can be combined. For example, the black matrix layer includes a black matrix and the stress adjustment portion, the black matrix is ​​arranged in the display area, the thickness of the black matrix is ​​greater than the thickness of the stress adjustment portion, the stress adjustment portion is in contact with the side wall of the touch insulation layer, and the thickness of the stress adjustment portion close to the side wall of the touch insulation layer is greater than or equal to the thickness of the stress adjustment portion away from the side wall of the touch insulation layer.

[0075] At the same time, an embodiment of the present application provides a display device, which includes a 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 as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the above embodiments, the description of each embodiment has its own emphasis. 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 only 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 arranged on at least one side of the special-shaped area, and the display panel comprises: substrate; A light-emitting functional layer is disposed on one side of the substrate; an encapsulation layer, arranged 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, the second inorganic layer being arranged 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; Among them, 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, characterized in that: 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, characterized in that: 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, characterized in that: The display panel further includes a filter layer, which is disposed 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 portion.

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

6. The display panel according to claim 4, characterized in that: 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, characterized in that: The stress adjustment portion contacts the side wall of the touch insulation layer, and a thickness of the stress adjustment portion close to the side wall of the touch insulation layer is greater than or equal to a thickness of the stress adjustment portion away from the side wall of the touch insulation layer.

8. The display panel according to claim 3, characterized in that: The second region is disposed around the first region, and the stress adjustment portion is disposed around the touch insulating layer in the first region; or the display panel includes a plurality of the stress adjustment portions, and the plurality of the stress adjustment portions are disposed at intervals in the second region.

9. The display panel according to claim 2, characterized in that: 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, characterized in that: The stress adjustment part includes a first stress adjustment part and a second stress adjustment part. In the second region, the first stress adjustment part is arranged between the touch insulating layer and the second inorganic layer, and the second stress adjustment part is arranged between the touch insulating layer and the protective insulating layer.

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