Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel is sequentially provided with a hole opening area, an isolation area and a display area, and comprises a substrate, at least one power-off isolation column formed on the substrate, and a functional layer formed on the side, away from the substrate, of the power-off isolation column. The functional layer is isolated into a first functional sub-layer and a second functional sub-layer by the at least one power-off isolation column, the first functional sub-layer forms a first projection on the substrate, and the second functional sub-layer forms a second projection on the substrate. At least one shading metal layer is arranged on one side, far away from the substrate, of the functional layer, each shading metal layer forms a third projection on the substrate, and the third projection formed by any shading metal layer is not overlapped with the first projection and the second projection at the same time. According to the technical scheme provided by the invention, the problem of power failure of the power-off isolation column caused by capacitive coupling of the functional layer and the metal shading layer is solved.

Description

Technical Field

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

[0002] In order to improve the utilization rate of the display panel, an opening area is generally reserved on the display panel to accommodate some additional components, such as cameras and sensors, etc. After the opening is made by cutting, cracks are likely to occur around the opening area. The above cracks are likely to cause the phenomenon of black spots (Growing Dark Spot at HIAA, GDSH) in the display area around the opening area, which requires water and power outages. In the related art, the power-off treatment is usually carried out by setting a power-off isolation column around the opening area, and the functional layer related to light emission is disconnected by the power-off isolation column. Then, a metal shading layer is usually set above the functional layer on the display panel, and the metal shading layer may cause the functional layer to fail due to capacitive coupling. Summary of the invention

[0003] The present application provides a display panel and a display device, aiming to solve the problem of power-off failure of a power-off isolation column caused by coupling between a functional layer and a metal light-shielding layer.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including an opening area, an isolation area, and a display area, wherein the display panel includes:

[0005] substrate substrate;

[0006] At least one power-off isolation column formed in an isolation region on a substrate base;

[0007] A functional layer is formed on a side of at least one power-off isolation column away from a base substrate, and at least one power-off isolation column isolates the functional layer in an isolation area into a first functional sublayer close to an opening area and a second functional sublayer close to a display area. The first functional sublayer forms a first projection on the base substrate, and the second functional sublayer forms a second projection on the base substrate.

[0008] At least one shading metal layer is arranged on the side of the functional layer away from the base substrate, each shading metal layer forms a third projection on the base substrate, and the third projection formed by any shading metal layer does not have an overlapping area with the first projection and the second projection at the same time.

[0009] In some embodiments, if the number of power-off isolation columns is at least two, the at least two power-off isolation columns also isolate the functional layer in the isolation area into at least one third functional sublayer, and the at least one third functional sublayer is located between the first functional sublayer and the second functional sublayer.

[0010] In some embodiments, at least one light-shielding metal layer includes a first light-shielding metal layer and a second light-shielding metal layer, the third projection formed by the first light-shielding metal layer only overlaps with the first projection, and the third projection formed by the second light-shielding metal layer only overlaps with the second projection.

[0011] In some embodiments, a groove region is formed between the first light-shielding metal layer and the second light-shielding metal layer.

[0012] In some embodiments, if the number of the power-off isolation pillars is at least two, the third projection formed by the first light-shielding metal layer covers the projection of the power-off isolation pillar closest to the opening area on the base substrate.

[0013] In some embodiments, the at least one light-shielding metal layer includes a third light-shielding metal layer, and a third projection formed by the third light-shielding metal layer has only an overlapping area with the first projection.

[0014] In some embodiments, if the number of the power-off isolation pillars is at least two, the third projection formed by the third light-shielding metal layer covers the projection of the power-off isolation pillar closest to the opening area on the base substrate.

[0015] In some embodiments, the at least one light-shielding metal layer includes a fourth light-shielding metal layer, and the third projection formed by the fourth light-shielding metal layer has only an overlapping area with the second projection.

[0016] In some embodiments, the third projection formed by the fourth light-shielding metal layer does not cover the projection of the power-off isolation column closest to the opening area on the base substrate.

[0017] In some embodiments, the display panel further comprises:

[0018] A retaining wall is formed in an isolation region of the substrate;

[0019] Wherein, at least one power-off isolation column is arranged between the retaining wall and the display area;

[0020] At least one waterproof isolation column is arranged between the retaining wall and the opening area.

[0021] In some embodiments, at least one power-off isolation column is disposed between the retaining wall and the opening area, and the power-off isolation column disposed between the retaining wall and the opening area is disposed adjacent to the retaining wall.

[0022] In some embodiments, at least one waterproof isolation column is disposed between the retaining wall and the display area, and the waterproof isolation column disposed between the retaining wall and the display area is disposed adjacent to the retaining wall.

[0023] In some embodiments, at least one light-shielding metal layer is disposed on the same layer as the touch electrodes.

[0024] In some embodiments, the functional layer includes at least one of a light emitting layer, an electrode, and a power signal line.

[0025] On the other hand, an embodiment of the present application provides a display device, including the above-mentioned display panel.

[0026] The embodiment of the present application provides a display panel, which includes a substrate, at least one power-off isolation column formed on the substrate, and a functional layer formed on the side of at least one power-off isolation column away from the substrate, wherein the at least one power-off isolation column isolates the functional layer in the isolation area into a first functional sublayer close to the opening area and a second functional sublayer close to the display area, wherein the first functional sublayer forms a first projection on the substrate, and the second functional sublayer forms a second projection on the substrate. At least one light-shielding metal layer is provided on the side of the functional layer away from the substrate, and each light-shielding metal layer forms a third projection on the substrate, and the third projection formed by any light-shielding metal layer does not overlap with the first projection and the second projection at the same time. By changing the arrangement of the shading metal layer on the display substrate, any shading metal layer will not overlap with the first functional sublayer and the second functional sublayer at the same time, thereby avoiding the shading metal layer and the two functional sublayers from producing a coupling effect at the same time, thereby ensuring that the first functional sublayer close to the opening area will not carry the same type of charge as the second functional sublayer close to the display area due to capacitive coupling, and ensuring that the functional layer close to the opening area is not charged, thereby solving the risk of power-off failure of the power-off isolation column due to capacitive coupling between the functional layer and the shading metal layer, and further improving the black spot phenomenon in the display area around the opening area of ​​the display substrate.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 A partial cross-sectional schematic diagram of an exemplary display substrate according to an embodiment of the present application;

[0030] Figure 2 for Figure 1 A schematic top view of a provided display panel;

[0031] Figure 3 for Figure 1 The schematic diagram of the coupling effect between the functional layer and the light-shielding metal layer in the exemplary display substrate is shown;

[0032] Figure 4A partial cross-sectional schematic diagram of a display substrate provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 A schematic top view of a provided display panel;

[0034] Figure 6 for Figure 4 A schematic diagram of the coupling effect between the functional layer and the light-shielding metal layer in the provided display substrate;

[0035] Figure 7 A partial cross-sectional schematic diagram of another display substrate provided in an embodiment of the present application;

[0036] Figure 8 for Figure 7 A schematic top view of a provided display panel;

[0037] Fig. 9 for Figure 7 A schematic diagram of the coupling effect between a functional layer and a light-shielding metal layer in another display substrate is provided;

[0038] Fig.10 A partial cross-sectional schematic diagram of another display substrate provided in an embodiment of the present application;

[0039] Fig.11 for Fig.10 A schematic top view of a provided display panel;

[0040] Fig.12 for Fig.10 A schematic diagram of the coupling effect between a functional layer and a light-shielding metal layer in another display substrate is provided;

[0041] Fig.13 A partial cross-sectional schematic diagram of another display substrate provided in an embodiment of the present application;

[0042] Fig.14 for Fig.13 A schematic top view of a provided display panel;

[0043] Fig.15 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0045] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0046] In the description of the present application, “plurality” means two or more.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] When describing some embodiments, the expression "connected" and its derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "electrically connected" indicates, for example, that two or more components are in direct physical or electrical contact, and may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0049] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0050] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0051] Exemplary embodiments are described herein with reference to cross-sectional views that are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include deviations in shape due to, for example, manufacturing. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0052] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0053] At present, some electronic products with openings in the display area, such as mobile phones using organic light-emitting diode displays (OLED), have a probability of black spot defects, namely the GDSH phenomenon, during the product lighting operation reliability environment test and user use. After a long period of analysis and experience accumulation, it is found that the black spot defect phenomenon is related to the electrochemical reaction under the condition of water vapor intrusion in the opening area. The gas produced by the electrochemical reaction and the voids in the opening area quickly make the isolation column area package ineffective. Therefore, the design of the opening in the display area must consider the effects of preventing external water and oxygen intrusion and power failure. In terms of power-off improvement, a power-off isolation column can be used. The power-off isolation column can be a passivation layer (PVX) power-off isolation column, such as using silicon nitride and other materials for insulation, or a pad (PS) power-off isolation column.

[0054] The power-off design structure can be as follows Figure 1 and Figure 2 As shown, it includes a power-off isolation column 102, a functional layer 103 and a light shielding layer 104, and the power-off isolation column 102 divides the functional layer 103 into a first functional sub-layer 1031 and a second functional sub-layer 1032, but the light shielding metal layer 104 covers both power-off isolation columns 102 and overlaps with the first functional sub-layer 1031 and the second functional sub-layer 1032. At this time, for Figure 1 In the illustrated embodiment, since the light-shielding metal layer 104 overlaps with both the first functional sub-layer 1031 and the second functional sub-layer 1032 , the light-shielding metal layer 104 is capacitively coupled with both the first functional sub-layer 1031 and the second functional sub-layer 1032 .

[0055] Figure 3 for Figure 1The capacitive coupling phenomenon diagram of the light shielding metal layer 104 and the functional layer 103 is shown in FIG. Figure 3 As shown, due to the existence of the capacitive coupling phenomenon, after a voltage is applied to the second functional layer 1032, if the second functional sublayer 1032 carries a negative charge, the shading metal layer 104 will carry an opposite type of charge, such as a positive charge, due to the capacitive coupling effect. The shading metal layer 104 is capacitively coupled with the first functional sublayer 1031, and thus an opposite type of charge, such as a negative charge, will be coupled out on the first functional sublayer 1031, resulting in the first functional sublayer 1031 and the second functional sublayer 1032 having the same charge type, thereby causing power-off failure and increasing the risk of the GDSH phenomenon.

[0056] In order to solve the above problems, the present application provides a display panel, such as Figure 4 As shown, the display panel 10 is sequentially provided with an opening area 11, an isolation area 12 and a display area 13, and the display panel 10 includes a base substrate 200, at least one power-off isolation column 102 formed in the isolation area 12 on the base substrate 200, and a functional layer 103 formed on the side of at least one power-off isolation column 102 away from the base substrate 200, and at least one power-off isolation column 102 isolates the functional layer 103 in the isolation area 12 into a first functional sublayer 1031 close to the opening area 11, and a second functional sublayer 1032 close to the display area 13, the first functional sublayer 1031 forms a first projection on the base substrate 200, and the second functional sublayer 1032 forms a second projection on the base substrate 200.

[0057] In some embodiments, the power-off isolation column 102 may include a metal layer 120, a source-drain electrode layer 121, and a passivation layer 122. For example, the material of the metal layer 120 may be metal molybdenum, the material of the source-drain electrode layer 121 may be metal titanium and metal aluminum, and the material of the passivation layer 122 may include inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. Figure 3 As shown, the power-off isolation column 102 is a multi-layer structure, so an undercut region A can be formed during the preparation process, so as to disconnect the functional layer 103 disposed thereon. In the embodiment of the present application, there is no limitation on the number of power-off isolation columns 102, for example, one or more power-off isolation columns 102 can be disposed, and since the first functional sub-layer 1031 and the second functional sub-layer 1032 are disconnected at the power-off isolation column 102, the direct electrical signal transmission path between the two is cut off, and electrical signals can no longer be directly transmitted.

[0058] In some embodiments, the above-mentioned power-off isolation column 102 may be in the isolation area 12 and arranged around the opening area 11 .

[0059] In the embodiment of the present application, the display panel 10 may further include at least one light-shielding metal layer 104 disposed on the side of the functional layer 103 away from the base substrate 200, and each light-shielding metal layer 104 forms a third projection on the base substrate 200, wherein the light-shielding metal layer 104 mainly plays the role of blocking light to prevent light leakage, but as described in the above embodiment, if the light-shielding metal layer 104 overlaps with the first functional sublayer 1031 and the second functional sublayer 1032 at the same time, the first functional sublayer 1031 and the second functional sublayer 1032 will be caused to carry the same type of charge due to the existence of capacitive coupling. In the embodiment of the present application, the third projection formed by any of the light-shielding metal layers 104 does not have an overlapping area with the first projection and the second projection at the same time, and thus capacitive coupling will not be formed at the same time. When the second functional sublayer 1032 is charged, the capacitive coupling of the light-shielding metal layer 104 will not cause the first functional sublayer 1031 to carry the same type of charge; therefore, the technical solution provided in the embodiment of the present application ensures that the first functional sublayer 1031 close to the side of the opening area 11 is not charged by changing the design of the light-shielding metal layer 104, thereby solving the risk of power-off failure of the power-off isolation column 102 due to capacitive coupling between the functional layer 103 and the light-shielding metal layer 104.

[0060] In the embodiment of the present application, the substrate 200 may be a flexible substrate, for example, including a first flexible substrate 201 and a second flexible substrate 203, and a bearing layer (Barrier) 202 is arranged between the first flexible substrate 201 and the second flexible substrate 203, and a buffer layer (Buffer) 204 is further arranged above the second flexible substrate 203.

[0061] The first flexible substrate 201 and the second flexible substrate 203 can be made of polyimide (PI) substrates, which are the best heat-resistant materials among polymer materials and have excellent chemical stability and mechanical properties. The buffer layer 204 is generally made of organic materials and uses low-temperature film forming technology, because low-temperature film forming will lengthen the route for water vapor to penetrate and delay the life of the OLED itself. Another function of the buffer layer 204 is to flatten the surface of the substrate 200.

[0062] For example, Figure 4 As shown, the display panel 10 further includes some other functional layers, for example, a gate insulating layer 205 may be provided on the substrate 200. The gate insulating layer 205 is mainly used for gate insulation, and may cover the gate pattern 206. Figure 4In the embodiment shown, two layers of gate patterns are provided, and the gate patterns are provided corresponding to the power-off isolation pillars, and the projections of the two on the base substrate 200 have an overlapping area. The gate insulating layer 205 can be provided as a polyimide film layer, which has high bending strength and tensile strength, and can cooperate with the base substrate 200 to make corresponding bends and ensure its insulation when the base substrate 200 is bent.

[0063] In addition, a first insulating layer 109 and a second insulating layer 111 may be respectively arranged above the first functional sublayer 1031 and the second functional sublayer 1032, and a pixel definition layer 110 may be arranged between the first insulating layer 109 and the second insulating layer 111, wherein the first insulating layer 109 and the second insulating layer 111 may play an insulating role, and their materials may be selected from silicon dioxide, silicon nitride and other materials, which may be formed by processes such as chemical vapor deposition; and the pixel definition layer 110 may be an organic polymer material, etc., which may be formed by inkjet printing technology, because it may also be called an inkjet printing layer. Inkjet printing technology, as a non-contact patterning technology, can spray ink droplets to a specified position and directly pattern them.

[0064] A protection layer 114 may be further disposed above the shielding metal layer 104 . In some embodiments, if the shielding metal layer 104 is disposed on the same layer as the touch electrodes, the protection layer 114 may be a touch organic protection layer (TOC).

[0065] In some embodiments, the number of power-off isolation columns 102 may be set to at least two, such as Figure 4 As shown, at least two power-off isolation columns 102 further isolate the functional layer 103 in the isolation region 12 into at least one third functional sublayer 1033 located between the first functional sublayer 1031 and the second functional sublayer 1032. Figure 4 In the case where two power-off isolation columns 102 are included, the number of the third functional sublayer 1033 formed is 1. The at least one third functional sublayer 1033 is arranged between the first functional sublayer 1031 and the second functional sublayer 1032, so that the distance between the first functional sublayer 1031 and the second functional sublayer 1032 can be set farther, so that it is easier to form the light-shielding metal layer 104 on each of them, and the light-shielding metal layer 104 close to the display area 13 is not easy to overlap with the first functional sublayer 1031, and the light-shielding metal layer 104 close to the opening area 11 is not easy to overlap with the second functional sublayer 1032.

[0066] The embodiment of the present invention provides a technical solution to solve the problem of power failure of the power-off isolation column 102 in the isolation area 12 due to capacitive coupling. There are three implementation methods, one of which can be to set two light-shielding metal layers 104 at the same time. The two light-shielding metal layers 104 can be divided into two parts by digging a groove in a light-shielding metal layer 104, and the two divided parts overlap with the first functional sublayer 1031 or the second functional sublayer 1032 respectively; or set a light-shielding metal layer 104, but the light-shielding metal layer 104 can only overlap with one of the first functional sublayer 1031 or the second functional sublayer 1032, thereby forming the other two implementation methods. The above three implementation methods are introduced through specific embodiments.

[0067] For the first implementation method mentioned above, Figure 4 and Figure 5 As shown, the at least one light shielding metal layer 104 may include a first light shielding metal layer 1041 and a second light shielding metal layer 1042. The first light shielding metal layer 1041 and the second light shielding metal layer 1042 may be independently manufactured, and may be formed by grooving the same light shielding metal layer 104, that is, a groove area 130 is formed between the first light shielding metal layer 1041 and the second light shielding metal layer 1042. And because the functional layer is isolated by the power-off isolation column 102, the edge of the first projection of the first functional sublayer 1031 (such as Figure 5 The edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area, and the edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area. Figure 5 The third projection formed by the first light-shielding metal layer 1041 only overlaps with the first projection, and the third projection formed by the second light-shielding metal layer 1042 only overlaps with the second projection. That is, the first light-shielding metal layer 1041 only overlaps with the first functional sublayer 1031, and the second light-shielding metal layer 1042 only overlaps with the second functional sublayer 1032.

[0068] In this case, if the second functional sublayer 1032 is charged after a voltage is applied near the display area 13, for example, it is negatively charged. Figure 6As shown, the second functional sublayer 1032 induces the opposite type of charge, such as positive charge, on the corresponding second light-shielding metal layer 1042. Since the first light-shielding metal layer 1041 and the second light-shielding metal layer 1042 are independently provided, the first functional sublayer 1031 only overlaps with the first light-shielding metal layer 1041, but not with the second light-shielding metal layer 1042. Therefore, no charge will be induced on the first light-shielding metal layer 1041 on one side of the opening area 11, and the corresponding first functional sublayer 1031, so that the power-off state is always maintained. Thus, the risk of power-off failure of the power-off isolation column 102 due to the capacitive coupling between the functional layer 103 and the light-shielding metal layer 104 is solved, and the occurrence rate of the GDSH phenomenon is reduced.

[0069] In some embodiments, Figure 4 and Figure 5 As shown, the number of power-off isolation columns 102 can be set to at least two, for example Figure 4 and Figure 5 As shown in the figure, the third projection formed by the first light-shielding metal layer 1041 can cover the projection of the power-off isolation column 102 closest to the opening area 11 on the base substrate 201, that is, the first light-shielding metal layer 1041 and the second light-shielding metal layer 1042 can cover one power-off isolation column 102 respectively. Specifically, in the case of setting two power-off isolation columns 102, a third functional sublayer 1033 will be formed between the first functional sublayer 1031 and the second functional sublayer 1032, and the third functional sublayer 1033 can just correspond to the slot area between the first light-shielding metal layer 1041 and the second light-shielding metal layer 1042, that is, there is a projection overlap area on the base substrate 200.

[0070] In this case, since the second light-shielding metal layer 1042 is farther from the first functional sublayer 1031, even if the second functional sublayer 1032 is charged after voltage is applied, the second light-shielding metal layer 1042 is charged due to capacitive coupling, and the first functional sublayer 1032 is less likely to be charged due to capacitive coupling. In this case, the first light-shielding metal layer 1041 can also be set so that the third projection formed by it covers the projection of the power-off isolation column 102 of the most adjacent opening area on the base substrate. At this time, it still does not overlap with the second functional sublayer 1032, but the light-shielding effect of the first light-shielding metal layer 1041 can be effectively improved.

[0071] In some embodiments, for the second embodiment described above, it can be as follows Figure 7 and Figure 8As shown, at least one light-shielding metal layer 104 includes a third light-shielding metal layer 1043. The third projection formed by the third light-shielding metal layer 1043 only overlaps with the first projection. Since the functional layer is isolated by the power-off isolation column 102, the edge of the first projection of the first functional sublayer 1031 (such as Figure 8 The edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area, and the edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area. Figure 8 The third light shielding metal layer 1043 only overlaps with the first functional sublayer 1031, and does not overlap with the second functional sublayer 1032. Fig. 9 As shown, since there is no overlap between the shading metal layer 104 and the second functional sublayer 1032, when the second functional sublayer 1032 is charged, the first functional sublayer 1031 will not be charged due to capacitive coupling, thereby solving the risk of power failure of the power-off isolation column 102 due to capacitive coupling between the functional layer 103 and the shading metal layer 104, and reducing the occurrence rate of the GDSH phenomenon.

[0072] For example, Figure 7 As shown, the number of the power-off isolation columns 102 is at least two, and the third projection formed by the third light-shielding metal layer 1043 covers the projection of the power-off isolation column 102 closest to the opening area 11 on the base substrate 201. Specifically, in the case of setting two power-off isolation columns 102, a third functional sublayer 1033 will be formed between the first functional sublayer 1031 and the second functional sublayer 1032, that is, the third light-shielding metal layer 1043 shrinks toward the opening area 11, and the third projection corresponding to the third light-shielding metal layer 1043 does not cross the second projection of the second functional sublayer 1032 close to the display area 13 and the first projection of the first functional sublayer 1031 close to the opening area 11, because the third light-shielding metal layer 1043 is farther away from the second functional sublayer 1032, as shown in FIG. Fig.10 As shown, even if the second functional sublayer 1032 is charged after voltage is applied, the third light-shielding metal layer 1043 and the second functional sublayer 1032 are not likely to generate capacitive coupling, that is, the first light-shielding metal layer 1043 close to the side of the opening area 11 will not induce charge, and the first functional sublayer 1031 overlapping with it will not induce charge, so that it is always in a power-off state.

[0073] In this case, the third light-shielding metal layer 1043 can also be set so that the third projection formed by it covers the projection of the power-off isolation column 102 of the nearest opening area on the base substrate. At this time, it still will not overlap with the second functional sublayer 1032, but can effectively improve the light-shielding effect of the third light-shielding metal layer 1043.

[0074] In some embodiments, Fig.10 and Fig.11 As shown, at least one light-shielding metal layer 104 includes a fourth light-shielding metal layer 1044, and the fourth projection formed by the fourth light-shielding metal layer 1044 only overlaps with the second projection. That is, since the functional layer is isolated by the power-off isolation column 102, the edge of the first projection of the first functional sublayer 1031 (such as Fig.11 The edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area, and the edge of the second projection of the second functional sublayer 1032 (shown as the solid line in the middle) will also be substantially flush with the edge of the power-off isolation column 102 adjacent to the opening area near the opening area. Fig.11 The fourth light shielding metal layer 1044 will only overlap with the second functional sub-layer 1032, but not with the first functional sub-layer 1031. Fig.12 As shown, since the fourth light-shielding metal layer 1044 does not overlap with the first functional sub-layer 1031, when the second functional sub-layer 1032 is charged, even if the fourth light-shielding metal layer 1044 carries an opposite charge through capacitive coupling, it will no longer cause the first functional sub-layer 1031 to be charged due to the capacitive coupling effect, thereby solving the risk of power-off failure of the power-off isolation column 102 due to the capacitive coupling between the functional layer 103 and the light-shielding metal layer 104, and reducing the occurrence rate of the GDSH phenomenon.

[0075] In some embodiments, the number of the power-off isolation columns 102 is at least two. Specifically, when two power-off isolation columns 102 are provided, a third functional sublayer 1033 is formed between the first functional sublayer 1031 and the second functional sublayer 1032. At this time, the fourth light-shielding metal layer 1044 is retracted toward the display area 13, making it easier to increase the lateral distance between the fourth light-shielding metal layer 1044 and the first functional sublayer 1031, thereby making it less likely to form capacitive coupling, thereby coupling out charges.

[0076] In some embodiments, considering that the first functional sublayer 1031 is mainly formed by the isolation of the power-off isolation column 102 closest to the opening area 11, the third projection formed by the fourth light-shielding metal layer 1044 does not cover the projection of the power-off isolation column 102 closest to the opening area 11 on the base substrate 200, thereby increasing the distance between the fourth light-shielding metal layer 1044 and the first functional sublayer 1031.

[0077] In the technical solution provided in this embodiment, the capacitive coupling state between the functional layer 103 and the fourth light-shielding metal layer 1044 can be as follows: Fig.10As shown, even if the second functional sublayer 1032 is negatively charged after voltage is applied, the fourth light-shielding metal layer 1044 and the second functional sublayer 1032 generate capacitive coupling with opposite positive charges. Since the fourth light-shielding metal layer 1044 is far away from the first functional sublayer 1031, that is, the fourth light-shielding metal layer 1044 on the side close to the opening area 11 is not prone to capacitive coupling with the first functional sublayer 1031, it can be ensured that the first functional sublayer 1031 on the side close to the opening area 11 is always in a power-off state.

[0078] In some embodiments, the display panel 10 further includes a retaining wall 105, which is formed in the isolation area 12 on the base substrate 200. The retaining wall 105 can be arranged to surround the opening area 11, and can include a plurality of stacked retaining wall patterns, and the material of each layer of the retaining wall pattern can be the same or different, for example, it can be arranged at the same layer as the planarization layer, the pixel definition layer, etc. on the display panel, and the stacked retaining wall 105 can work together with each isolation column to prevent the cracks in the opening area 11 from spreading inward, and block the intrusion of external water vapor, and can form a better packaging effect.

[0079] In an embodiment of the present application, isolation columns can be set on both the inner and outer sides of the retaining wall 105, and the same or different types of isolation columns can be set on the inner and outer sides of the retaining wall 105. For example, the at least one power-off isolation column 102 can be set between the retaining wall 105 and the display area 13, and a waterproof isolation column 115 can be set between the retaining wall 105 and the opening area 11. The waterproof isolation column 115 mainly serves to prevent the invasion of external water and oxygen.

[0080] In some embodiments, the isolation columns inside the retaining wall 105 can all be power-off isolation columns 102, that is, Fig.10 As shown, the power-off isolation columns 102 are all arranged between the retaining wall 105 and the display area 13 , and the waterproof isolation columns 115 are arranged on the outer side of the retaining wall 105 , that is, close to the opening area 11 .

[0081] Alternatively, in some other embodiments, at least one power-off isolation column 102 can be disposed between the retaining wall 105 and the opening area 11, that is, without changing the position of the light-shielding metal layer 104, at least one power-off isolation column 102 is moved outside the retaining wall 105. The at least one power-off isolation column 102 can be disposed adjacent to the retaining wall 105, and the number of the at least one power-off isolation column 102 can be one. Fig.13 and Fig.14 As shown, this can also effectively increase the distance between the fourth shielding metal layer 1044 and the first functional sublayer 1031, avoiding capacitive coupling between the two, thereby ensuring that the functional layer 103 close to the opening area 11 is always in a power-off state. The capacitive coupling schematic diagram can still refer to Fig.12 shown.

[0082] In addition to the above-mentioned power-off isolation column 102, a plurality of waterproof isolation columns 115 may be provided outside the retaining wall 105. Fig.10 and Fig.13 It can be seen that the above-mentioned power-off isolation column 102 and waterproof isolation column 115 both have an undercut area A, and the undercut area A can also be used for waterproofing. In order to achieve the power-off function, the power-off isolation column 102 only needs to form the undercut area A on one side, while the waterproof isolation column 115 has undercut areas A on both sides, so it has a better waterproof effect than the power-off isolation column 102. Fig.14 As shown, in some cases, at least one waterproof isolation column 115 can be set between the retaining wall 105 and the display area 13. It can be set adjacent to the retaining wall 105, and the number can be one. These waterproof isolation columns can also prevent the invasion of external water and oxygen, thereby improving its waterproof effect.

[0083] In some embodiments, the touch function can be integrated into the display panel to realize the touch and display functions on the display panel at the same time. In this case, the display panel will also include touch electrodes. Since the touch electrodes can usually be made of conductive metal materials, in the embodiment of the present application, the at least one light-shielding metal layer 104 can be arranged in the same layer as the touch electrodes, that is, the at least one light-shielding metal layer 104 can be prepared in the same step of making the touch electrodes. In some embodiments, due to the addition of the touch function, the display panel can also include a touch signal line 116, which can be arranged in the same layer as the light-shielding metal layer 104, or in a different layer, and can be one or more.

[0084] In some embodiments, the functional layer 103 may be a functional layer related to light emission on the display panel. Since the functional layer 103 has conductivity, it can be charged by capacitive coupling. The functional layer 103 includes but is not limited to at least one of the light emitting layer of the OLED device, the electrode of the OLED device, and the power signal line. The light emitting layer of the OLED device may be an EL electroluminescent film layer, the electrode of the OLED device may be a cathode, and the power signal line may be formed on the source and drain electrode layer.

[0085] The embodiment of the present application also includes a display device, Fig.15 This is a schematic diagram of the structure of a display device according to an embodiment of the present application. Fig.15 As shown, the display device includes the display panel 10 shown in any of the above embodiments.

[0086] The display panel therein can refer to the records of each figure in the above-mentioned embodiment. As recorded in the above-mentioned embodiment, the display panel 10 therein is sequentially provided with an opening area 11, an isolation area 12 and a display area 13, and the display panel 10 includes a base substrate 200, at least one power-off isolation column 102 formed on the base substrate 201, and a functional layer 103 formed on the side of at least one power-off isolation column 102 away from the base substrate 201. The at least one power-off isolation column 102 isolates the functional layer 103 in the isolation area 12 into a first functional sublayer 1031 close to the opening area 11, and a second functional sublayer 1032 close to the display area 13. The first functional sublayer 1031 forms a first projection on the base substrate 201, and the second functional sublayer 1032 forms a second projection on the base substrate 200.

[0087] The display panel 10 also includes at least one light-shielding metal layer 104 disposed on the side of the functional layer 103 away from the base substrate 201. Each light-shielding metal layer 104 forms a third projection on the base substrate 200. The third projection formed by any light-shielding metal layer 104 does not overlap with the first projection and the second projection at the same time, so that any light-shielding metal layer 104 does not overlap with the first functional sublayer 1031 and the second functional sublayer 1032 at the same time. This can effectively prevent the light-shielding metal layer 104 from being capacitively coupled, so that when the second functional sublayer 1032 is charged, it also couples to cause the first functional sublayer 1031 to carry the same type of charge, thereby avoiding the failure of the power-off isolation column 102, and further improving the black spot phenomenon in the display area around the opening area of ​​the display substrate. The specific structure and implementation of the display panel can refer to the above Figure 4-Figure 14 A detailed description of any of the embodiments described.

[0088] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that a person skilled in the art can think of within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: An opening area, an isolation area and a display area are sequentially arranged, and the display panel includes: substrate substrate; At least one power-off isolation column formed in an isolation region on the substrate; A functional layer is formed on a side of the at least one power-off isolation column away from the base substrate, wherein the at least one power-off isolation column isolates the functional layer in the isolation area into a first functional sublayer close to the opening area and a second functional sublayer close to the display area, wherein the first functional sublayer forms a first projection on the base substrate, and the second functional sublayer forms a second projection on the base substrate; At least one shading metal layer is arranged on a side of the functional layer away from the base substrate, each of the shading metal layers forms a third projection on the base substrate, and the third projection formed by any one of the shading metal layers does not have an overlapping area with the first projection and the second projection at the same time.

2. The display panel according to claim 1, characterized in that: If the number of the power-off isolation columns is at least two, the at least two power-off isolation columns further isolate the functional layer in the isolation area into at least one third functional sublayer, and the at least one third functional sublayer is located between the first functional sublayer and the second functional sublayer.

3. The display panel according to claim 1 or 2, characterized in that: The at least one light-shielding metal layer includes a first light-shielding metal layer and a second light-shielding metal layer, the third projection formed by the first light-shielding metal layer only overlaps with the first projection, and the third projection formed by the second light-shielding metal layer only overlaps with the second projection.

4. The display panel according to claim 3, characterized in that: A groove area is formed between the first light-shielding metal layer and the second light-shielding metal layer.

5. The display panel according to claim 3, characterized in that: If the number of the power-off isolation pillars is at least two, the third projection formed by the first light-shielding metal layer covers the projection of the power-off isolation pillar closest to the opening area on the base substrate.

6. The display panel according to claim 1, characterized in that: The at least one light-shielding metal layer includes a third light-shielding metal layer, and a third projection formed by the third light-shielding metal layer has only an overlapping area with the first projection.

7. The display panel according to claim 6, characterized in that: If the number of the power-off isolation pillars is at least two, the third projection formed by the third light-shielding metal layer covers the projection of the power-off isolation pillar closest to the opening area on the base substrate.

8. The display panel according to claim 1, characterized in that: The at least one light-shielding metal layer includes a fourth light-shielding metal layer, and a third projection formed by the fourth light-shielding metal layer has only an overlapping area with the second projection.

9. The display panel according to claim 8, characterized in that: The third projection formed by the fourth light-shielding metal layer does not cover the projection of the power-off isolation column closest to the opening area on the base substrate.

10. The display panel according to claim 1, characterized in that: The display panel further includes: A retaining wall formed in an isolation region of the substrate; Wherein, the at least one power-off isolation column is arranged between the retaining wall and the display area; At least one waterproof isolation column is arranged between the retaining wall and the opening area.

11. The display panel according to claim 10, characterized in that: The at least one power-off isolation column is arranged between the retaining wall and the opening area, and the power-off isolation column arranged between the retaining wall and the opening area is arranged adjacent to the retaining wall.

12. The display panel according to claim 10, characterized in that: At least one waterproof isolation column is arranged between the retaining wall and the display area, and the waterproof isolation column arranged between the retaining wall and the display area is arranged adjacent to the retaining wall.

13. The display panel according to any one of claims 1 to 12, characterized in that: The at least one light-shielding metal layer is disposed on the same layer as the touch electrode.

14. The display panel according to any one of claims 1 to 12, characterized in that: The functional layer includes at least one of a light emitting layer, an electrode, and a power signal line.

15. A display device, characterized in that: Comprising the display panel described in any one of claims 1-14.

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