A display panel, a display module and a display device

Abstract

The display panel, the display module and the display device provided by the present disclosure have an opening area, a blocking area surrounding the opening area, and a display area surrounding the blocking area. The display panel comprises a substrate, a crack blocking structure located on one side of the substrate in the blocking area and surrounding the opening area, and a blocking wall located on one side of the substrate in the blocking area and surrounding the crack blocking structure. The crack blocking structure and the blocking wall both comprise a first metal layer and a first organic layer on the side of the first metal layer away from the substrate. The edge of the first metal layer on the side away from the substrate is recessed relative to the edge of the first organic layer on the side close to the substrate. At least one of the crack blocking structure and the blocking wall has a deep groove penetrating the film layer between the first organic layer and the substrate, and the deep groove surrounds the opening area. The first organic layer fills in the deep groove and is connected with the substrate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display panel, a display module and a display device. BACKGROUND

[0002] In a full-screen product, a notch design is usually made in a display area for placing a camera module.

[0003] However, in an Organic Light Emitting Diode (OLED) display screen, this notch design in the display area causes the inorganic layer in the encapsulation layer to be continuously designed in the outer control peripheral area when encapsulating the peripheral area of the notch, which leads to peeling or cracking of the inorganic layer when the notch is made, and the cracking extends to the display area of the peripheral area, resulting in black spots around the notch. SUMMARY

[0004] Embodiments of the present disclosure provide a display panel, a display module and a display device to solve the above problems in the prior art.

[0005] In a first aspect, to solve the above technical problems, the present disclosure provides a display panel having an opening area, a blocking area surrounding the opening area, and a display area surrounding the blocking area, the display panel comprising:

[0006] a substrate;

[0007] a crack blocking structure located on one side of the substrate in the blocking area and surrounding the opening area;

[0008] a blocking wall located on one side of the substrate in the blocking area and surrounding the crack blocking structure;

[0009] The blocking wall and the crack blocking structure each include a first metal layer and a first organic layer on a side of the first metal layer away from the substrate, an edge of the side of the first metal layer away from the substrate being recessed relative to an edge of the side of the first organic layer close to the substrate; at least one of the blocking wall and the crack blocking structure has a deep notch penetrating a film layer between the first organic layer and the substrate, the deep notch surrounds the opening area, and the first organic layer fills the deep notch and is connected to the substrate.

[0010] In a possible implementation, the blocking area further includes a support structure located in the blocking area and surrounding the opening area, and the crack blocking structure surrounds the support structure.

[0011] The support structure includes the first organic layer and a film layer between the first organic layer and the substrate.

[0012] In the direction from the opening region to the display region, the support structure has a plurality of the deep trenches arranged at intervals, and the first organic layer is connected to the substrate by the deep trenches.

[0013] In one possible implementation, the region between the support structure and the crack barrier structure has the deep trenches surrounding the support structure, and the first organic layer in the support structure fills the deep trenches between the support structure and the crack barrier structure and is connected to the substrate.

[0014] In one possible implementation, the display panel further includes:

[0015] The blocking region is alternately stacked between the substrate and a plurality of second metal layers and inorganic layers.

[0016] The deep trenches penetrate through the film layers between the first organic layer and the substrate.

[0017] In one possible implementation, the first organic layer in the blocking wall includes a first sub-organic layer and a second sub-organic layer arranged in layers.

[0018] The first organic layer in the crack barrier structure and the support structure includes the first sub-organic layer.

[0019] The first sub-organic layer is connected to the substrate by the deep trenches.

[0020] In one possible implementation, the first sub-organic layer has a longitudinal section in the shape of a straight rack, and one rack in the straight rack corresponds to one deep trench.

[0021] In one possible implementation, the blocking wall has a plurality of the deep trenches.

[0022] In one possible implementation, the deep trench includes a trench wall and a trench bottom, the trench wall is composed of at least one film layer penetrating through the film layers between the first sub-organic layer and the substrate and the substrate, and the trench bottom is located in the film layer farthest from the first metal layer.

[0023] In one possible implementation, the film layer where the trench bottom is located has the same material as the first sub-organic layer.

[0024] In a possible implementation, the first metal layer includes a first sub-metal layer, a second sub-metal layer, and a third sub-metal layer; the first sub-metal layer is located on a side of the first organic layer close to the substrate substrate, the second sub-metal layer is located on a side of the first sub-metal layer away from the substrate substrate, and the third sub-metal layer is located on a side of the second sub-metal layer away from the substrate substrate.

[0025] The first sub-metal layer, the second sub-metal layer, and the third sub-metal layer have a trapezoidal shape in a longitudinal section.

[0026] In the barrier wall and the crack barrier structure, edges of the second sub-metal layer are recessed relative to edges of the first sub-metal layer and the third sub-metal layer.

[0027] In a possible implementation, the display panel further includes an encapsulation layer covering the display area and the barrier area, the encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer; the first inorganic encapsulation layer is located on a side of the first organic layer away from the substrate substrate, the organic encapsulation layer is located on a side of the first inorganic encapsulation layer away from the substrate substrate, and the second inorganic encapsulation layer is located on a side of the organic encapsulation layer away from the substrate substrate.

[0028] The first inorganic encapsulation layer and the second inorganic encapsulation layer extend from the display area to the opening area, and the organic encapsulation layer is blocked by the barrier wall.

[0029] In a possible implementation, the barrier area further includes a metal light-shielding layer surrounding the barrier wall and located on a side surface of the encapsulation layer away from the substrate substrate.

[0030] The display panel further includes:

[0031] A touch inorganic layer covering the display area and the non-display area and located on a side of the metal light-shielding layer away from the substrate substrate.

[0032] A touch protection layer covering the touch inorganic layer, at least a portion of the touch protection layer in the barrier area being prepared from a mixed solution of graphene and a non-polar solvent, and the touch protection layer being electrically connected to a ground potential.

[0033] In a possible implementation, the touch inorganic layer has an opening slot surrounding the barrier wall and penetrating through the touch inorganic layer, and the touch protection layer fills the opening slot.

[0034] The display panel further includes a metal lead wire electrically connecting the metal light-shielding layer and a ground terminal in a binding area on a side of the display area.

[0035] In a possible implementation, the non-polar solvent includes:

[0036] An acrylate solvent or an epoxy resin solvent.

[0037] In a possible implementation, the touch protection layer is doped with a black substance in a mixed solution used by at least part of the blocking area.

[0038] In a possible implementation, the black substance includes:

[0039] Graphene powder or black pigment.

[0040] In a second aspect, the embodiments of the present disclosure provide a display module, including:

[0041] The display panel as described in the first aspect;

[0042] The flexible circuit board is bound to the binding area in the display panel.

[0043] In a third aspect, the embodiments of the present disclosure provide a display device, including: the display module as described in the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 A top view of a display panel provided by the embodiments of the present disclosure;

[0045] Figure 2 A cross-sectional view in the AA' direction provided by the embodiments of the present disclosure; Figure 1

[0046] Figure 3 A longitudinal section view of a blocking area before cutting in a display panel provided by the embodiments of the present disclosure;

[0047] Figure 4 Another longitudinal section view of a blocking area before cutting in a display panel provided by the embodiments of the present disclosure;

[0048] Figure 5 Another longitudinal section view of a blocking area before cutting in a display panel provided by the embodiments of the present disclosure;

[0049] Figure 6 Another longitudinal section view of a blocking area in a display panel provided by the embodiments of the present disclosure;

[0050] Figure 7 Another longitudinal section view of a blocking area in a display panel provided by the embodiments of the present disclosure;

[0051] Figure 8 Another longitudinal section view of a blocking area in a display panel provided by the embodiments of the present disclosure; ​

[0052] Figure 9 A schematic view of a longitudinal section of a first sub-organic layer according to an embodiment of the present disclosure is provided.

[0053] Figure 10 A longitudinal section view of a blocking area in another display panel according to an embodiment of the present disclosure is provided.

[0054] Figure 11 A longitudinal section view of a blocking area in another display panel according to an embodiment of the present disclosure is provided.

[0055] Figure 12 A longitudinal section view of a blocking area in another display panel according to an embodiment of the present disclosure is provided.

[0056] Figure 13 A longitudinal section view of a blocking area in another display panel according to an embodiment of the present disclosure is provided.

[0057] Figure 14 A longitudinal section view of a blocking area in another display panel according to an embodiment of the present disclosure is provided.

[0058] Figure 15 A top view of another display panel according to an embodiment of the present disclosure is provided.

[0059] Reference signs:

[0060] Display area AA, blocking area B, opening area H, deep groove M, opening groove N, binding area C, metal lead L, ground terminal GND;

[0061] Substrate 1, crack blocking structure 2, blocking wall 3, first organic layer 4, first metal layer 5, support structure 6, second metal layer 7, inorganic layer 8, first sub-metal layer 51, second sub-metal layer 52, third sub-metal layer 53, first sub-organic layer 41, second sub-organic layer 42, packaging layer 9, first inorganic packaging layer 91, organic packaging layer 92, second inorganic packaging layer 93, metal light shielding layer 10, touch inorganic layer 11, touch protection layer 12. DETAILED DESCRIPTION

[0062] The display panel, display module and display device according to the embodiments of the present disclosure are provided to solve the above problems.

[0063] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described below with reference to the accompanying drawings and examples. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided to make the present disclosure more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the present disclosure are all explained using the accompanying drawings as examples, but changes can be made as needed, and all changes are included in the scope of protection of the present disclosure. The drawings of the present disclosure are only used to illustrate relative position relationships and do not represent true proportions.

[0064] It should be noted that specific details are set forth in the following description to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in a variety of ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present disclosure. Therefore, the present disclosure is not limited to the specific embodiments disclosed below. The subsequent description of the specification is a preferred embodiment for implementing the present application, but the description is for the purpose of illustrating the general principles of the present application and is not intended to limit the scope of the present application. The scope of protection of the present application shall be determined as defined by the appended claims.

[0065] See Figure 1 and Figure 2 , Figure 1 A top view of a display panel provided in an embodiment of the present disclosure is shown. Figure 2 Provided for the embodiments of the present disclosure Figure 1 In the cross-sectional view taken along the AA' direction, the display panel comprises an opening area, a barrier area surrounding the opening area, and a display area surrounding the barrier area. The display panel includes:

[0066] Base substrate 1;

[0067] The crack blocking structure 2 is located on one side of the substrate 1 in the blocking area B and surrounds the opening area H;

[0068] a barrier wall 3, located on one side of the substrate 1 in the barrier area B and surrounding the crack barrier structure 2;

[0069] Both the blocking wall 3 and the crack blocking structure 2 include a first metal layer 5, and a first organic layer 4 on the side of the first metal layer 5 away from the base substrate 1, and the edge of the first metal layer 5 away from the base substrate 1 is indented relative to the lower edge of the first organic layer 4 close to the base substrate 1; at least one of the blocking wall 3 and the crack blocking structure 2 has a deep groove M that penetrates the film layer between the first organic layer 4 and the base substrate 1, and the deep groove M surrounds the opening area H, and the first organic layer 4 is filled in the deep groove M and connected to the base substrate 1.

[0070] In some embodiments, the deep groove M may exist only in the blocking wall 3, or only in the crack blocking structure 2, or both the blocking wall 3 and the crack blocking structure 2 may have the deep groove M.

[0071] The display panel generally has a display layer forming an electroluminescent device, the display layer includes a cathode and an anode arranged opposite to each other, and a light-emitting layer located between the cathode and the anode. The display layer covers the display area AA and the blocking area B. In the blocking area B, the display layer is deposited on the first organic layer 4 (e.g., Figure 2 As shown in FIG, since the upper edge of the first metal layer 5 in the barrier wall 3 and the crack blocking structure 2 is retracted relative to the lower edge of the first organic layer 4, the display layer deposited on the barrier wall 3 and the crack blocking structure 2 is broken between the first organic layer 4 and the first metal layer 5; and since at least one of the barrier wall 3 and the crack blocking structure 2 has a deep trench M penetrating the film layer between the first organic layer 4 and the base substrate 1, the film layer between the first organic layer 4 and the base substrate 1 is disconnected, and the first organic layer 4 filled in the deep trench M has good insulation performance. The strength and toughness of the barrier wall 3 and the crack blocking structure 2 can not only improve the strength and stability of the barrier wall 3 and the crack blocking structure 2, but also prevent the cathodes in the display layers at both ends of the barrier wall 3 and the crack blocking structure 2 from being electrically connected, thereby preventing the cathode potential in the display area AA from being transmitted to the edge of the opening area H. Furthermore, when the edge of the opening area H is cut to form the opening area H, even if cracks are generated at the edge of the opening area H, there will be no electrochemical corrosion on the edge of the opening area H due to the influence of ambient temperature and humidity as in the related art, resulting in problems such as "black spots on the holes" and "greening at low grayscale" on the edge of the opening area H.

[0072] In some embodiments, there may be multiple crack blocking structures 2 in the blocking area B (e.g. Figure 2 As shown), when there are multiple crack barrier structures 2 in the barrier area B, one of the crack barrier structures 2 may have a deep groove M, several of the crack barrier structures 2 may have a deep groove M, or each crack barrier structure 2 may have a deep groove M.

[0073] like Figure 2 There are multiple crack blocking structures 2 in the blocking area B shown. Each crack blocking structure 2 and blocking wall 3 has a deep groove M that penetrates the film layer between the first organic layer 4 and the base substrate 1. In this way, when the first organic layer 4 is deposited on the first metal layer 5, the crack blocking structure 2 and the blocking wall 3 can be firmly connected to the base substrate 1, preventing the inorganic layer 8 in the display surface from peeling off or causing cracks in the inorganic layer 8 due to cutting to form the edge of the opening area H.

[0074] See Figure 3A longitudinal section view of a blocking area in a display panel before a hole area is cut is provided in the embodiments of the present disclosure. A plurality of crack blocking structures 2 in the blocking area B can be arranged towards the center of the hole area and arranged in the hole area, Figure 3 An edge of the hole area H is also shown. The edge is generally referred to as a cutting line surrounding the center of the hole area H. In an ideal case, the cutting line is used for cutting. However, due to the alignment accuracy, equipment progress and other problems, there is inevitably a certain error. The area corresponding to the error within the allowable range is the area corresponding to the cutting path. Since the crack blocking structures 2 are arranged in the cutting path and should be filled with the first organic layer 4 to increase the strength, the compression and impact resistance of the periphery of the hole area can be improved, the mechanical strength can be improved, and the number of cracks generated during cutting of the periphery of the hole area can be reduced.

[0075] Please refer to Figure 4 Another longitudinal section view of a blocking area in a display panel before a hole area is cut is provided in the embodiments of the present disclosure. The blocking area B of the display panel further includes:

[0076] A support structure 6 located in the blocking area B and surrounding the hole area H, and the crack blocking structures 2 surround the support structure 6.

[0077] The support structure 6 includes the first organic layer 4 and a film layer between the first organic layer 4 and the substrate 1. In the direction from the hole area H to the display area AA, the support structure 6 has a plurality of spaced deep grooves M, and the first organic layer 4 is connected to the substrate 1 through the deep grooves M. The film layer between the first organic layer 4 and the substrate 1 includes a first metal layer 5 and the like.

[0078] Before the hole area H is cut, a part of the cutting path is in the blocking area B and another part is in the hole area H. The support structure 6 is arranged in the cutting path and surrounds the center of the hole area H. After the hole area H is cut, the support structure 6 located in the blocking area B surrounds the hole area H.

[0079] By arranging a metal layer in the support structure 6 and spacing a plurality of deep grooves M surrounding the hole area H, each deep groove M penetrates the film layer between the first organic layer 4 and the substrate 1, and the first organic layer 4 is connected to the substrate 1 through the deep grooves M, so that the strength of the film layer around the hole area H can be improved, the crack propagation to the display area AA during cutting can be prevented, and the support structure 6 and the substrate 1 can be firmly connected together to prevent the film layer from falling off.

[0080] Please refer to Figure 5Another longitudinal sectional view of the blocking region in the display panel is provided in the embodiments of the present disclosure, the area between the support structure 6 and the crack blocking structure 2 has a deep groove M surrounding the support structure 6, and the first organic layer 4 in the support structure 6 fills the deep groove M between the support structure 6 and the crack blocking structure 2 and is connected with the substrate 1.

[0081] By setting the deep groove M surrounding the support structure 6 in the area between the support structure 6 and the crack blocking structure 2, and filling it with the first organic layer 4 in the support structure 6, and then connecting it with the substrate 1, the connection of all film layers between the first organic layer 4 in the support structure 6 and the crack blocking structure 2 and the substrate 1 can be completely blocked, and the crack formed in the cutting process is prevented from spreading to the crack blocking structure 2.

[0082] Please refer to Figure 6 Another longitudinal sectional view of the blocking region in the display panel is provided in the embodiments of the present disclosure, the display panel further comprises:

[0083] The blocking region B is located between the substrate 1 and the first metal layer 5, and alternately stacked with the plurality of second metal layers 7 and the inorganic layers 8.

[0084] The deep groove M penetrates the film layers between the first organic layer 4 and the substrate 1.

[0085] The display panel includes a thin film transistor pixel circuit and an electroluminescent device electrically connected to the thin film transistor pixel circuit.

[0086] The thin film transistor pixel circuit includes an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer insulating layer, and a source-drain electrode layer which are stacked.

[0087] The source-drain electrode layer further includes a planarization layer.

[0088] The electroluminescent device is located above the planarization layer, and specifically includes an anode, a light-emitting functional layer located above the anode, and a cathode located above the light-emitting functional layer. The display panel further includes a pixel definition layer for dividing sub-pixels, and a support layer located above part of the pixel definition layer.

[0089] In some embodiments, the first gate layer includes, for example, the gate of a thin film transistor and the first electrode of a capacitor, and the second gate layer includes, for example, the second electrode of the capacitor. The source-drain electrode layer includes the source and drain of the thin film transistor. The source-drain electrode layer is electrically connected to the active layer, and the anode is electrically connected to the source-drain electrode layer.

[0090] The film layer between the first organic layer 4 and the substrate 1 is arranged in the same layer as the film layer in the thin film transistor pixel circuit, the first metal layer 5 is arranged in the same layer as the source-drain electrode layer in the thin film transistor pixel circuit, the second metal layer 7 is arranged in the same layer as the first gate layer and the second gate layer in the thin film transistor pixel circuit, and the inorganic layer 8 is arranged in the same layer as the first gate insulating layer, the second gate insulating layer, and the interlayer insulating layer in the thin film transistor pixel circuit.

[0091] In the embodiments provided in the present disclosure, by arranging the film layer between the first metal layer 5 and the substrate 1 as the alternately stacked plurality of second metal layers 7 and inorganic layers 8, the second metal layer 7 can be formed synchronously when forming the first gate layer and the second gate layer of the thin film transistor pixel circuit, and the inorganic layer 8 can be formed synchronously when forming the first gate insulating layer, the second gate insulating layer, and the interlayer insulating layer of the thin film transistor pixel circuit, so that the strength of the blocking area B can be further improved by using the existing process.

[0092] Referring to Figure 7 Another longitudinal sectional view of the blocking area in the display panel provided by the embodiments of the present disclosure is provided, the first metal layer 5 includes a first sub-metal layer 51, a second sub-metal layer 52, and a third sub-metal layer 53; the first sub-metal layer 51 is located on the side of the first organic layer 4 close to the substrate 1, the second sub-metal layer 52 is located on the side of the first sub-metal layer 51 away from the substrate 1, and the third sub-metal layer 53 is located on the side of the second sub-metal layer 52 away from the substrate 1;

[0093] The longitudinal sectional view of the first sub-metal layer 51, the second sub-metal layer 52, and the third sub-metal layer 53 is a trapezoidal shape;

[0094] In the blocking wall 3 and the crack blocking structure 2, the edge of the second sub-metal layer 52 is recessed relative to the edges of the first sub-metal layer 51 and the third sub-metal layer 53.

[0095] By recessing the edge of the second sub-metal layer 52 relative to the edges of the first sub-metal layer 51 and the third sub-metal layer 53 in the blocking wall 3 and the crack blocking structure 2, the cathode in the electroluminescent device can be further blocked, and the cathode potential in the electroluminescent device can be prevented from being transmitted to the opening area H, so as to form black spots due to electrochemical corrosion.

[0096] Referring to Figure 8 Another longitudinal sectional view of the blocking area in the display panel provided by the embodiments of the present disclosure is provided, the first organic layer 4 located in the blocking wall 3 includes a first sub-organic layer 41 and a second sub-organic layer 42 arranged in layers;

[0097] The first organic layer 4 located in the crack blocking structure 2 and the support structure 6 includes the first sub-organic layer 41;

[0098] The first sub-organic layer 41 is connected to the substrate 1 through the deep groove M.

[0099] The distance between the lower edge of the third sub-metal layer 53 in the barrier wall 3 and the lower edge of the third sub-metal layer 53 in the crack barrier structure 2 is d1, the distance between the lower edge of the first sub-organic layer 41 in the barrier wall 3 and the lower edge of the first sub-organic layer 41 in the crack barrier structure 2 is d2, and the value of d1-d2 is in the range of 1-2 um.

[0100] The first sub-organic layer 41 is arranged in the same layer as the planar layer, and the second sub-organic layer 42 is arranged in the same layer as the pixel definition layer. By covering the first sub-organic layer 41 on the first metal layer 5 and connecting it to the substrate 1 through the deep groove M, the barrier wall 3, the crack barrier structure 2, and the support structure 6 can be firmly fixed on the substrate 1, thereby preventing film layer peeling.

[0101] Please refer to Figure 9 A schematic diagram of the longitudinal section of the first sub-organic layer is provided for the embodiments of the present disclosure. The shape of the longitudinal section of the first sub-organic layer 41 is a straight rack shape, and one rack in the straight rack shape corresponds to one deep groove M. The straight rack shape can have one rack or multiple racks, and the specific number of racks can be adjusted according to the equipment process precision and the width of the barrier wall 3, the crack barrier structure 2, and the support structure 6, which is not limited here.

[0102] For example, the width of the barrier wall 3 is relatively wide, the shape of the longitudinal section of the first sub-organic layer 41 in the barrier wall 3 can be set as a straight rack shape with 2 racks, the width of the crack barrier structure 2 is relatively small, the shape of the longitudinal section of the first sub-organic layer 41 in the crack barrier structure 2 can be set as a straight rack shape with 1 rack, and the width of the support structure 6 is the widest, the shape of the longitudinal section of the first sub-organic layer 41 in the support structure 6 can be set as a straight rack shape with more than 3 racks, as shown in Figure 10 Another longitudinal section diagram of the barrier region in the display panel provided for the embodiments of the present disclosure is shown.

[0103] As shown in Figure 9 The width of a single rack in the straight rack shape is 4-5 um, and the corresponding groove width of the deep groove M is also 4-5 um. By setting the shape of the longitudinal section of the first sub-organic layer 41 as a straight rack shape, the barrier wall 3, the crack barrier structure 2, and the support structure 6 can be firmly fixed on the substrate 1, thereby preventing film layer peeling.

[0104] In some embodiments, the deep groove M includes a groove wall and a groove bottom, the groove wall is composed of at least one film layer between the first sub-organic layer 41 and the substrate 1 and the substrate 1, and the groove bottom is located in the film layer farthest from the first metal layer 5.

[0105] AsFigure 10 As shown, when the bottom of the deep trench M is on the surface of the base substrate 1 , the wall of the deep trench M penetrates the film layer between the first sub-organic layer 41 and the base substrate 1 .

[0106] In some embodiments, the base substrate 1 may be composed of a plurality of stacked film layers, such as polyimide-barrier layer-polyimide. When the bottom of the deep trench M is within the base substrate 1, such as the top film layer closest to the first organic layer 4 in the base substrate 1, the groove wall of the deep trench M penetrates the film layer between the first organic layer 4 and the base substrate 1, as well as the top film layer of the base substrate 1. The thickness of the deep trench entering the base substrate 1 is d4, and d4 may be 2 μm, such as Figure 11 , which is a longitudinal cross-sectional view of a blocking area in another display panel provided by an embodiment of the present disclosure.

[0107] In some embodiments, the first organic layer 4 can be made of the same material as the film layer at the bottom of the deep trench M. For example, the film layer at the bottom of the deep trench M is the top film layer of the base substrate 1. The material used for this top film layer is polyimide, and the first sub-organic layer 41 is also made of polyimide. This can make the connection between the first sub-organic layer 41 and the base substrate 1 more secure.

[0108] See Figure 12 A longitudinal cross-sectional view of a barrier region in another display panel provided in an embodiment of the present disclosure. The display panel further includes an encapsulation layer 9 covering the display area AA and the barrier region B. The encapsulation layer 9 includes a first inorganic encapsulation layer 91, an organic encapsulation layer 92, and a second inorganic encapsulation layer 93. The first inorganic encapsulation layer 91 is located on the side of the first organic layer 4 away from the base substrate 1, the organic encapsulation layer 92 is located on the side of the first inorganic encapsulation layer 91 away from the base substrate 1, and the second inorganic encapsulation layer 93 is located on the side of the organic encapsulation layer 92 away from the base substrate 1.

[0109] The first inorganic encapsulation layer 91 and the second inorganic encapsulation layer 93 extend from the display area AA to the opening area H, and the organic encapsulation layer 92 is blocked by the blocking wall 3 .

[0110] In the embodiment provided in the present disclosure, by eliminating the blocking structure on the side of the organic encapsulation layer 92 in the related art, more space can be saved, the blocking wall 3 and the crack blocking structure 2 can be widened, and the required deep groove M can be set in the blocking wall 3 and the crack blocking structure 2.

[0111] See Figure 13 A longitudinal cross-sectional view of another barrier region in a display panel according to an embodiment of the present disclosure. Barrier region B of the display panel further includes a metal light-shielding layer 10 surrounding barrier walls 3 and located on the side of the encapsulation layer 9 facing away from the substrate 1.

[0112] The display panel also includes:

[0113] The touch inorganic layer 11 covers the display area AA and the non-display area AA, and is located on the side of the metal light shielding layer 10 away from the substrate 1.

[0114] The touch protection layer 12 covers the touch inorganic layer 11, and the part of the touch protection layer 12 in the blocking area B is prepared by a mixed solution of graphene and a non-polar solvent, and is electrically connected to the ground potential.

[0115] In some embodiments, the touch protection layer 12 in the blocking area B can be prepared by a mixed solution of graphene and a non-polar solvent, and the touch protection layer 12 in the blocking area B is electrically connected to the ground potential. Since graphene has good conductivity, the mixed solution of graphene and a non-polar solvent is used as the touch protection layer 12 and is electrically connected to the ground potential, which can achieve complete electrostatic dissipation of the edge of the opening area H and improve the green problem of the low-order edge of the opening area H.

[0116] In some embodiments, the touch protection layer 12 in the blocking area B can be prepared by a mixed solution of graphene and a non-polar solvent, and the touch protection layer 12 in the blocking area B is electrically connected to the ground potential. Since graphene has good conductivity, the mixed solution of graphene and a non-polar solvent is used as the touch protection layer 12 and is electrically connected to the ground potential, which can achieve complete electrostatic dissipation of the edge of the opening area H and improve the green problem of the low-order edge of the opening area H.

[0117] Please refer to Figure 14 and Figure 15 , Figure 14 Another longitudinal sectional view of the blocking area in the display panel provided by the embodiments of the present disclosure is provided. Figure 15 Another top view of the display panel provided by the embodiments of the present disclosure is provided. The touch inorganic layer 11 has an opening slot N surrounding the blocking wall 3 and penetrating the touch inorganic layer 11, and the touch protection layer 12 fills the opening slot N. The width of the opening slot N is d5, and the value range of d5 is 5-7um.

[0118] The display panel further includes a metal lead L electrically connecting the metal light shielding layer 10 and the ground terminal GND in the binding area C.

[0119] By providing an open groove N in the touch inorganic layer 11 that surrounds the barrier wall 3 and penetrates the touch inorganic layer 11, the touch protection layer 12 prepared from a mixed solution formed by graphene and a non-polar solution is filled in the open groove N in the touch inorganic layer 11, so that the touch protection layer 12 can be electrically connected to the metal light-shielding layer 10. Since the metal light-shielding layer 10 is electrically connected to the ground terminal GND in the binding area C of the display panel through the metal lead L, the metal light-shielding layer 10 and the metal lead L can be used to electrically connect the touch protection layer 12 to the ground potential, thereby achieving static dissipation. At the same time, the process flow will not be increased, thereby effectively saving process and cost.

[0120] It should be understood that the conductivity of the touch protection layer 12 prepared from the mixed solution of graphene and a non-polar solution is negligible compared to the conductivity of metal materials, but the conductivity is sufficient for static dissipation. Therefore, the conductivity of the touch protection layer 12 should not be equated with the conductivity of metal materials.

[0121] In some embodiments, the non-polar solvent includes an acrylate solvent or an epoxy resin solvent.

[0122] In some embodiments, the touch protection layer 12 is doped with a black substance in the mixed solution used in at least a portion of the blocking area B.

[0123] In some embodiments, the black substance includes graphene powder or black pigment.

[0124] In the embodiment provided by the present disclosure, by doping the touch protection layer 12 in the blocking area B with black matter, full light shielding can be achieved in the blocking area B, that is, full light shielding can be achieved around the opening area H, thereby preventing light leakage from occurring at the edge of the opening area H due to cutting the edge of the opening area H or lamination offset.

[0125] Based on the same inventive concept, an embodiment of the present disclosure provides a display module, including:

[0126] The display panel as described above;

[0127] The flexible circuit board is bound to the binding area of ​​the display panel.

[0128] Based on the same inventive concept, an embodiment of the present disclosure provides a display device, including: the display module as described above.

[0129] The display device can be an OLED display, an OLED display screen, an OLED TV or other display device, or can be a mobile device such as a mobile phone, a tablet computer, or a notebook.

[0130] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0131] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A display panel comprising an opening area, a barrier area surrounding the opening area, and a display area surrounding the barrier area, wherein: The display panel includes: substrate; a crack blocking structure, located on one side of the substrate in the blocking area and surrounding the opening area; a blocking wall, located on one side of the substrate in the blocking area and surrounding the crack blocking structure; Both the blocking wall and the crack blocking structure include a first metal layer and a first organic layer on the side of the first metal layer away from the base substrate, and the edge of the first metal layer away from the base substrate is indented relative to the edge of the first organic layer close to the base substrate; at least one of the blocking wall and the crack blocking structure has a deep groove that penetrates the film layer between the first organic layer and the base substrate, and the deep groove surrounds the opening area, and the first organic layer is filled in the deep groove and connected to the base substrate.

2. The display panel according to claim 1, wherein: The barrier region further comprises a support structure located in the barrier region and surrounding the opening region, wherein the crack barrier structure surrounds the support structure; The supporting structure includes the first organic layer and a film layer between the first organic layer and the base substrate; In the direction from the opening area to the display area, the support structure has a plurality of deep trenches arranged at intervals, and the first organic layer is connected to the base substrate through the deep trenches.

3. The display panel according to claim 2, wherein: The region between the support structure and the crack barrier structure has the deep trench surrounding the support structure. The first organic layer in the support structure fills the deep trench between the support structure and the crack barrier structure and is connected to the base substrate.

4. The display panel according to claim 2 or 3, wherein: The display panel further includes: A plurality of second metal layers and inorganic layers alternately stacked between the base substrate and the first metal layer in the barrier region; The deep trench penetrates the film layer between the first organic layer and the base substrate.

5. The display panel according to claim 4, wherein: The first organic layer located in the barrier wall includes a first sub-organic layer and a second sub-organic layer stacked in layers; The first organic layer located in the crack barrier structure and the support structure includes the first sub-organic layer; The first sub-organic layer is connected to the base substrate through the deep trench.

6. The display panel according to claim 5, wherein: The longitudinal section of the first sub-organic layer is in the shape of a straight rack, wherein one rack corresponds to one deep groove.

7. The display panel according to claim 6, wherein: The retaining wall has a plurality of deep trenches therein.

8. The display panel according to claim 5, wherein: The deep trench includes a trench wall and a trench bottom, wherein the trench wall is composed of a film layer passing through the first sub-organic layer and the base substrate and at least one film layer in the base substrate, and the trench bottom is located at the film layer farthest from the first metal layer in the at least one film layer.

9. The display panel according to claim 8, wherein: The film layer where the groove bottom is located is made of the same material as the first sub-organic layer.

10. The display panel according to any one of claims 1 to 3, wherein: The first metal layer includes a first sub-metal layer, a second sub-metal layer, and a third sub-metal layer that are stacked; the first sub-metal layer is located on a side of the first organic layer close to the base substrate, the second sub-metal layer is located on a side of the first sub-metal layer away from the base substrate, and the third sub-metal layer is located on a side of the second sub-metal layer away from the base substrate; The longitudinal sections of the first sub-metal layer, the second sub-metal layer, and the third sub-metal layer are trapezoidal in shape; In the barrier wall and the crack blocking structure, an edge of the second sub-metal layer is retracted relative to edges of the first sub-metal layer and the third sub-metal layer.

11. The display panel according to claim 10, wherein: The display panel further includes an encapsulation layer covering the display area and the barrier area, the encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked together; the first inorganic encapsulation layer is located on a side of the first organic layer away from the base substrate, the organic encapsulation layer is located on a side of the first inorganic encapsulation layer away from the base substrate, and the second inorganic encapsulation layer is located on a side of the organic encapsulation layer away from the base substrate; The first inorganic encapsulation layer and the second inorganic encapsulation layer extend from the display area to the opening area, and the organic encapsulation layer is blocked by the blocking wall.

12. The display panel according to claim 11, wherein: The blocking area further includes a metal light shielding layer surrounding the blocking wall and located on a surface of the packaging layer away from the substrate; The display panel further includes: a touch inorganic layer, covering the display area and the non-display area, and located on a side of the metal light-shielding layer away from the base substrate; A touch protection layer covers the touch inorganic layer, wherein at least a portion of the touch protection layer in the blocking area is prepared from a mixed solution of graphene and a non-polar solvent and is electrically connected to a ground potential.

13. The display panel according to claim 12, wherein: The touch inorganic layer has an open groove surrounding the blocking wall and penetrating the touch inorganic layer, and the touch protection layer fills the open groove; A binding area is provided on one side of the display area, and the display panel further comprises a metal lead electrically connecting the metal light shielding layer and a ground terminal in the binding area.

14. The display panel according to claim 12, wherein: The non-polar solvent comprises: Acrylate solvent or epoxy resin solvent.

15. The display panel according to claim 12, wherein: The touch protection layer is doped with a black substance in a mixed solution used in at least a portion of the blocking area.

16. The display panel according to claim 15, wherein: The black substance includes: Graphene powder or black pigment.

17. A display module, wherein: include: The display panel according to any one of claims 1 to 16; The flexible circuit board is bound to the binding area of ​​the display panel.

18. A display device, wherein: include: The display module according to claim 17.

Images