An edge encapsulation structure

Abstract

The present application discloses an edge encapsulation structure, including: an encapsulation body, the encapsulation body having an installation surface and a receiving groove covering the installation surface, the installation surface and the receiving groove being connected to form a receiving cavity; a light-emitting unit provided on the installation surface and located within the receiving cavity; a barrier groove, the barrier groove being opened at the connection position between the installation surface and the receiving groove and surrounding the receiving cavity in a ring shape; and a diversion unit provided within the barrier groove. When moisture enters the barrier groove, the diversion unit has a guiding effect on the moisture, aggregates the moisture and then guides it to the side wall of the diversion unit under the action of gravity, or the moisture aggregates to form water droplets, and due to the gravity of the water droplets, flows along the side wall of the diversion unit onto the auxiliary adsorption layer, so that the moisture in the barrier groove is absorbed by the auxiliary adsorption layer, minimizing the amount of moisture entering the receiving cavity, avoiding the contact between the moisture and the light-emitting unit and causing the light-emitting unit to fail, and improving the reliability of this structure.

Description

Technical Field

[0001] The present invention generally relates to the field of packaging technology, and particularly relates to an edge packaging structure. Background Art

[0002] An OLED device refers to a device in which an organic semiconductor material and a light-emitting material emit light under the drive of an electric field through carrier injection and recombination. OLED devices have many advantages and have a bright future in the display field. OLED devices are very sensitive to water vapor and oxygen, and the water vapor and oxygen that penetrate into the interior of the OLED device are the main factors affecting the lifespan of the OLED device; therefore, OLED devices are mostly encapsulated with a packaging structure to block oxygen and water vapor.

[0003] In the prior art, a common packaging structure is to encapsulate the OLED device with a resin adhesive. However, when simply using resin adhesive for encapsulation, water vapor and oxygen will slowly penetrate through the encapsulating adhesive material. In addition, in order to enhance the water and oxygen barrier effect of the device, the distance from the outer edge of the adhesive material to the OLED is usually widened, but on the traditional OLED substrate and cover plate, the adhesive material area can only be widened on the plane, which will increase the non-light-emitting area and is not conducive to the production of a narrow-bezel display panel. Another common packaging structure is to encapsulate the OLED device with a glass adhesive, and this method can achieve a good packaging effect. However, the glass adhesive needs to be irradiated with a laser during the curing process, which will damage the OLED layer; moreover, if only the glass adhesive is used for encapsulation, since the middle of the glass plate will collapse, it is impossible to produce large-size OLED devices. Therefore, we propose an edge packaging structure to solve the above problems. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an edge packaging structure that improves packaging reliability.

[0005] The present application provides an edge packaging structure, including:

[0006] A packaging body, the packaging body has a mounting surface and a receiving groove covering the mounting surface, and the mounting surface and the receiving groove are connected to form a receiving cavity; a light-emitting unit is provided on the mounting surface and is located in the receiving cavity;

[0007] A barrier groove, the barrier groove is opened at the connection position between the mounting surface and the receiving groove and surrounds the receiving cavity; a diversion unit is provided in the barrier groove.

[0008] According to the technical solution provided by the embodiment of the present application, the packaging body includes:

[0009] A substrate, the mounting surface is formed on the substrate;

[0010] Encapsulation cover plate, with a receiving groove opened on one side of the encapsulation cover plate;

[0011] Adsorption layer, disposed on the mounting surface and / or the bottom wall of the receiving groove;

[0012] The edge of the encapsulation cover plate close to the notch of the receiving groove is connected to the substrate through a sealing frame adhesive.

[0013] According to the technical solution provided by the embodiment of the present application, the barrier groove is opened on the edge of the substrate and / or the edge of the encapsulation cover plate.

[0014] According to the technical solution provided by the embodiment of the present application, the diversion unit includes: at least one set of diversion components;

[0015] The diversion component has a plurality of diversion members arranged uniformly.

[0016] According to the technical solution provided by the embodiment of the present application, the diversion unit includes: an auxiliary adsorption layer laid on the bottom wall of the barrier groove, and at least one set of diversion components is disposed on the auxiliary adsorption layer;

[0017] The diversion component has a plurality of diversion members arranged uniformly.

[0018] According to the technical solution provided by the embodiment of the present application, the diversion member is a cone structure, and the end face of the diversion member at the bottom end of the cone can be connected to the auxiliary adsorption layer or the bottom wall of the barrier groove.

[0019] According to the technical solution provided by the embodiment of the present application, the part of the diversion member close to the bottom end of the cone forms a hydrophobic area, and the part of the diversion member close to the tip of the cone forms a hydrophilic area.

[0020] According to the technical solution provided by the embodiment of the present application, a first metal layer and a second metal layer are provided on the conical surface of the diversion member; the first metal layer is connected to the anode of the light-emitting unit, and the second metal layer is connected to the cathode of the light-emitting unit.

[0021] According to the technical solution provided by the embodiment of the present application, the height of the diversion member is greater than or equal to the depth of the barrier groove and less than the sum of the depth of the barrier groove and the thickness of the sealing frame adhesive.

[0022] According to the technical solution provided by the embodiment of the present application, the material of the diversion member is fluorinated ethylene propylene.

[0023] In summary, the present application specifically discloses the specific structure of an edge encapsulation structure. The present application uses the upper surface of the substrate as the installation surface, sets the light-emitting unit on the installation surface, uses the accommodation groove opened on one side of the encapsulation cover plate, and the installation surface is connected to the accommodation groove to form an accommodation cavity. The accommodation groove covers the light-emitting unit, and a barrier groove is opened at the connection position between the installation surface and the accommodation groove, and a diversion unit is arranged therein; due to the disordered movement of water vapor, the adsorption layer of the traditional encapsulation structure cannot absorb all the water vapor in the accommodation cavity. Therefore, the above structure is set up to separate the water vapor from the accommodation cavity by using the diversion unit in the barrier groove. When water vapor enters the barrier groove, the diversion unit has a guiding effect on the water vapor, gathers the water vapor and guides it to the side wall of the diversion unit under the action of gravity, or the water vapor gathers to form water droplets, and due to the gravity of the water droplets, it flows along the side wall of the diversion unit to the auxiliary adsorption layer, so that the water vapor in the barrier groove is absorbed by the auxiliary adsorption layer, minimizing the amount of water vapor entering the accommodation cavity, avoiding the contact between the water vapor and the light-emitting unit and causing the light-emitting unit to fail, and improving the reliability of this structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 Schematic diagram of the structure of Embodiment 1.

[0026] Figure 2 Schematic diagram of the structure of Embodiment 2.

[0027] Figure 3 Schematic diagram of the structure of Embodiment 3.

[0028] Figure 4 Schematic diagram of the structure of Embodiment 4.

[0029] Figure 5 Schematic diagram of the structure of Embodiment 5.

[0030] Figure 6 Schematic diagram of the structure of Embodiment 6.

[0031] Figure 7 Schematic diagram of the structure of Embodiment 7.

[0032] Figure 8 Schematic diagram of the structure of Embodiment 8.

[0033] Figure 9 Schematic diagram of the structure of Embodiment 9.

[0034] Reference numerals in the figure: 1, light-emitting unit; 2, receiving groove; 3, adsorption layer; 4, flow guide member; 5, substrate; 6, encapsulation cover plate; 7, sealing frame adhesive; 8, barrier groove; 9, first metal layer; 10, second metal layer; 11, auxiliary adsorption layer. Detailed implementation manners

[0035] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0037] Embodiment 1

[0038] Please refer to Figure 1 the schematic structural diagram of the first embodiment of a packaging structure provided by the present application shown in the figure, including:

[0039] A packaging body, the packaging body has a mounting surface, and a receiving groove 2 covered on the mounting surface, and a receiving cavity is formed by connecting the mounting surface and the receiving groove 2; a light-emitting unit 1 is provided on the mounting surface, and it is located in the receiving cavity;

[0040] A barrier groove 8, the barrier groove 8 is opened at the connection position of the mounting surface and the receiving groove 2, and it surrounds the receiving cavity; a flow guide unit is provided in the barrier groove 8.

[0041] In this embodiment, the packaging body includes:

[0042] A substrate 5, whose upper surface serves as the mounting surface for mounting the light-emitting unit 1; the type of the light-emitting unit 1, for example, is an organic electroluminescent device, a quantum dot light-emitting device;

[0043] An encapsulation cover plate 6, which is a cover structure that cooperates with the substrate 5 to encapsulate the light-emitting unit 1. A receiving groove 2 is opened on one side of the encapsulation cover plate 6. When the edge of the encapsulation cover plate 6 is connected to the edge of the substrate 5 through a sealing frame adhesive 7, a receiving cavity is formed, and the receiving groove 2 covers the light-emitting unit 1; among them, the type of the sealing frame adhesive 7 is, for example, uv adhesive.

[0044] The adsorption layer 3 is disposed on the mounting surface and / or the bottom wall of the accommodating groove 2. The adsorption layer 3 can be only disposed on the surface of the mounting surface and adjacent to the light-emitting unit 1, or only disposed on the bottom wall of the accommodating groove 2 for adsorbing water vapor in the accommodating cavity. It can also be disposed on both the surface of the mounting surface and the bottom wall of the accommodating groove 2. The two parts of the adsorption layer 3 adsorb the water vapor in the accommodating cavity simultaneously, improving the water vapor adsorption speed and more quickly reducing the contact probability between the water vapor in the accommodating cavity and the light-emitting unit 1.

[0045] Here, the adsorption layer 3 is, for example, a desiccant layer.

[0046] The barrier groove 8 is opened at the edge of the substrate 5. The notch of the barrier groove 8 faces the encapsulation cover plate 6. And the notch of the barrier groove 8 is connected to the encapsulation cover plate 6 through the sealing adhesive 7. The cross-sectional shape of the barrier groove 8 is not limited to a specific shape, such as a rectangle, a parallelogram, a square, etc. Among them, the rectangular shape is as Figure 1 shown.

[0047] The diversion unit is disposed in the barrier groove 8. Among them, the diversion unit includes: at least one group of diversion components. The diversion components have a plurality of uniformly arranged diversion members 4, which play a guiding and adsorbing role for the water vapor entering the barrier groove 8. As Figure 1 shown, the extending direction of each diversion member 4 can be perpendicular to the mounting surface, and the extending direction of the diversion member 4 is the vertical direction.

[0048] Among them, the diversion member 4 is a cone structure. The end face of the diversion member 4 at the bottom of the cone can be connected to the bottom wall of the barrier groove 8. And, the part of the diversion member 4 close to the bottom of the cone forms a hydrophobic area, and the part of the diversion member 4 close to the tip of the cone forms a hydrophilic area. The hydrophilic area can capture the water vapor in the barrier groove 8, and after the water vapor condenses into water droplets, it flows to the hydrophobic area.

[0049] The height of the diversion member 4 is greater than or equal to the depth of the barrier groove 8 and less than the sum of the depth of the barrier groove 8 and the thickness of the sealing adhesive 7, so that the diversion member 4 forms a guiding and adsorbing barrier at the connection between the encapsulation cover plate 6 and the substrate 5, surrounding the accommodating cavity, effectively blocking the contact between the water vapor and the light-emitting unit 1.

[0050] Specifically, the diversion member 4 forms a micro-needle structure around the light-emitting unit 1. Among them, the principle of action of the micro-needle structure is similar to that of cactus spines. In arid regions, the reason why cacti can survive mainly depends on their spines. The spines of cacti can collect water vapor condensates in the air, enabling the water vapor condensates to adhere to the surface of their needles. In addition, the principle is the same for the beetles in the Namib Desert to obtain water from the thin air through their own elytra on the back. The height of the diversion member 4 is 1 to 1500 μm, preferably 1 to 50 μm; the diameter is 0.1 to 1000 μm, preferably 0.1 to 100 μm.

[0051] Among them, the material of the flow guide member 4 is, for example, fluorinated ethylene propylene; the flow guide member 4 can be formed by laser engraving.

[0052] Specifically, first, the whole piece of fluorinated ethylene propylene is arranged in the barrier groove, and then a laser engraving machine is used to engrave from its top surface downward, and the cutting depth is controlled by generally controlling the power of the laser engraving machine.

[0053] As Figure 1 shown, the flow guide assembly is a group, which includes 10 flow guide members 4. The array distribution path of the flow guide members 4 can be obtained according to the contour shape of the accommodation cavity, so that the flow guide members 4 are evenly distributed around the accommodation cavity; the principle of absorbing water vapor is as follows: the water vapor entering the barrier groove 8 is captured by the hydrophilic area of the flow guide member 4, and the water vapor is adsorbed on the conical surface of the hydrophilic area. When a certain amount of water vapor accumulates to form water droplets, due to the gravity of the water droplets, they flow along the conical surface of the flow guide member 4 to the bottom of the barrier groove 8, reducing the water vapor entering the accommodation cavity, and a small amount of water vapor entering the accommodation cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light-emitting unit 1 from failing and improve the reliability of this packaging structure. At this time, since the flow direction of the water droplets formed by the water vapor is affected by its gravity, in order to ensure that the water vapor is effectively absorbed, when this structure is in use, the light-emitting unit 1 emits light toward the substrate 5 side.

[0054] Embodiment 2

[0055] On the basis of Embodiment 1, an auxiliary adsorption layer 11 is arranged on the bottom wall of the barrier groove 8, and a flow guide unit is installed on the auxiliary adsorption layer 11.

[0056] In this embodiment, as Figure 2 shown, the flow guide assembly is a group, and the principle of absorbing water vapor is as follows: the water vapor entering the barrier groove 8 is captured by the hydrophilic area of the flow guide member 4, and the water vapor is adsorbed on the conical surface of the hydrophilic area. When a certain amount of water vapor accumulates to form water droplets, due to the gravity of the water droplets, they flow along the conical surface of the flow guide member 4 to the auxiliary adsorption layer 11 and are absorbed by the auxiliary adsorption layer 11, improving the overall water vapor adsorption amount of the barrier groove 8 and the flow guide unit, reducing the water vapor entering the accommodation cavity to a greater extent, and an extremely small amount of water vapor entering the accommodation cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light-emitting unit 1 from failing and make the reliability of this packaging structure higher.

[0057] Among them, the type of the auxiliary adsorption layer 11 is, for example, a desiccant layer.

[0058] Embodiment 3

[0059] On the basis of Embodiment 1, the barrier groove 8 is opened at the edge of the packaging cover plate 6, and the notch of the barrier groove 8 faces the substrate 5.

[0060] In this embodiment, as Figure 3As shown in the figure, the diversion assembly is a set, and its principle of absorbing water vapor is as follows: The water vapor entering the barrier groove 8 is captured by the hydrophilic area of the diversion member 4, and the water vapor is adsorbed on the conical surface of the hydrophilic area. When a certain amount of water vapor accumulates, water droplets are formed. Due to the gravitational force of the water droplets, they flow along the conical surface of the diversion member 4 to the bottom of the barrier groove 8, reducing the water vapor entering the accommodation cavity. Moreover, a small amount of water vapor entering the accommodation cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the failure of the light-emitting unit 1 and improve the reliability of this packaging structure. At this time, since the flow direction of the water droplets formed by the water vapor is affected by its gravity, in order to ensure that the water vapor is effectively absorbed, when this structure is in use, the light-emitting unit 1 emits light toward the side of the packaging cover plate 6.

[0061] Embodiment 4

[0062] Based on Embodiment 3, in this embodiment, an auxiliary adsorption layer 11 is provided on the bottom wall of the barrier groove 8, and a diversion unit is installed on the auxiliary adsorption layer 11.

[0063] In this embodiment, as Figure 4 shown, the diversion assembly is a set, and its principle of absorbing water vapor is as follows: The water vapor entering the barrier groove 8 is captured by the hydrophilic area of the diversion member 4, and the water vapor is adsorbed on the conical surface of the hydrophilic area. When a certain amount of water vapor accumulates, water droplets are formed. Due to the gravitational force of the water droplets, they flow along the conical surface of the diversion member 4 to the auxiliary adsorption layer 11 and are absorbed by the auxiliary adsorption layer 11, improving the overall water vapor adsorption capacity of the barrier groove 8 and the diversion unit, reducing the water vapor entering the accommodation cavity to a greater extent. An extremely small amount of water vapor entering the accommodation cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the failure of the light-emitting unit 1 and make the reliability of this packaging structure higher.

[0064] Among them, the type of the auxiliary adsorption layer 11 is, for example, a desiccant layer.

[0065] Embodiment 5

[0066] In this embodiment, Embodiment 1 and Embodiment 3 are combined. Barrier grooves 8 are opened at the edges of the substrate 5 and the packaging cover plate 6, and the openings of the two barrier grooves 8 are arranged opposite to each other; and a diversion unit is provided in each barrier groove 8, and the structures of the diversion units are the same, all being: at least one set of diversion assemblies.

[0067] In this embodiment, the arrangement modes of the two diversion units are as follows: First, the diversion unit on one side of the substrate 5 is closer to the accommodation cavity than the diversion unit on one side of the packaging cover plate 6; Second, the diversion unit on one side of the packaging cover plate 6 is closer to the accommodation cavity than the diversion unit on one side of the substrate 5; Third, the shape of the connection line of the orthographic projections of the diversion members 4 of the diversion unit on one side of the packaging cover plate 6 and the diversion assemblies of the diversion unit on one side of the substrate 5 on the installation surface is similar to the contour shape of the accommodation cavity.

[0068] Among them, in the first and second types, the flow guiding members 4 of the two flow guiding units can be arranged in a staggered manner or in a one-to-one correspondence.

[0069] Since the flow guiding members are arranged on both sides of the substrate 5 and the encapsulation cover plate 6, no matter how this structure is used, the light emitting direction of the light emitting unit 1 is not restricted. Moreover, the two air guiding units can form a more rigorous guiding barrier, separating the water vapor from the light emitting unit 1 to the greatest extent.

[0070] Such as Figure 5 As shown, taking the first arrangement method as an example, and the flow guiding members 4 of the two flow guiding units are arranged in a staggered manner; assuming that the light emitting direction of the light emitting unit 1 faces the bottom wall of the accommodating groove 2, the water vapor entering the blocking groove 8 is adsorbed on the conical surfaces of the flow guiding members 4 of the two flow guiding units. When a certain amount of water vapor accumulates on the flow guiding member 4 on the side of the encapsulation cover plate 6 to form water droplets, due to the gravity of the water droplets, they flow along the conical surface of the flow guiding member 4 to the bottom of the blocking groove 8 on the same side. And the water droplets formed on the flow guiding member on the side of the substrate 5 can drip into the blocking groove 8 on the side of the encapsulation cover plate 6 due to the gravity of the water droplets, thereby reducing the water vapor entering the accommodating cavity. Moreover, the small amount of water vapor entering the accommodating cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light emitting unit 1 from failing and improve the reliability of this encapsulation structure.

[0071] Embodiment 6

[0072] This embodiment combines Embodiment 2 and Embodiment 4. Blocking grooves 8 are opened at the edges of the substrate 5 and the encapsulation cover plate 6, and the openings of the two blocking grooves 8 are arranged opposite to each other; and a flow guiding unit is provided in each blocking groove 8. The structures of the flow guiding units are the same, and each is provided with an auxiliary adsorption layer 11 and at least one set of flow guiding components arranged on the corresponding auxiliary adsorption layer 11.

[0073] In this embodiment, the arrangement method of the two flow guiding units is the same as that in Embodiment 5, and will not be elaborated here.

[0074] Such as Figure 6As shown, taking the first arrangement method as an example, the flow guiding members 4 of the two flow guiding units are staggeredly distributed; assuming that the light emitting direction of the light emitting unit 1 faces the bottom wall of the accommodating groove 2, the water vapor entering the blocking groove 8 is adsorbed on the conical surfaces of the flow guiding members 4 of the two flow guiding units. When a certain amount of water vapor accumulates on the flow guiding member 4 on one side of the encapsulation cover plate 6 to form water droplets, due to the gravitational force of the water droplets, they flow along the conical surface of the flow guiding member 4 to the auxiliary adsorption layer 11 on the same side and are absorbed by the auxiliary adsorption layer 11 on the same side. Moreover, the water droplets formed on the flow guiding member on one side of the substrate 5 can drip onto the auxiliary adsorption layer 11 on one side of the encapsulation cover plate 6 due to the gravitational force of the water droplets and are absorbed, thereby reducing the water vapor entering the accommodating cavity. And a small amount of water vapor entering the accommodating cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light emitting unit 1 from failing and improve the reliability of this encapsulation structure.

[0075] Example 7

[0076] In this embodiment, Example 1 and Example 4 are combined. Blocking grooves 8 are opened at the edges of the substrate 5 and the encapsulation cover plate 6, and the openings of the two blocking grooves 8 are arranged opposite to each other; and a flow guiding unit is provided in each blocking groove 8. The flow guiding unit in the blocking groove 8 on one side of the substrate 5 includes: at least one set of flow guiding components; the flow guiding unit in the blocking groove 8 on one side of the encapsulation cover plate 6 includes: an auxiliary adsorption layer 11 is provided on the bottom wall of the blocking groove 8 on the same side, and a flow guiding unit is installed on the auxiliary adsorption layer 11.

[0077] In this embodiment, the arrangement method of the two flow guiding units is the same as that in Example 5 and will not be elaborated here.

[0078] As Figure 7 shown, taking the first arrangement method as an example, and the flow guiding members 4 of the two flow guiding units are staggeredly distributed; assuming that the light emitting direction of the light emitting unit 1 faces the bottom wall of the accommodating groove 2, the water vapor entering the blocking groove 8 is adsorbed on the conical surfaces of the flow guiding members 4 of the two flow guiding units. When a certain amount of water vapor accumulates on the flow guiding member 4 on one side of the encapsulation cover plate 6 to form water droplets, due to the gravitational force of the water droplets, they flow along the conical surface of the flow guiding member 4 to the auxiliary adsorption layer 1 on the same side and are absorbed. Moreover, the water droplets formed on the flow guiding member 4 on one side of the substrate 5 can drip onto the auxiliary adsorption layer 11 on one side of the encapsulation cover plate 6 due to the gravitational force of the water droplets, thereby greatly reducing the water vapor entering the accommodating cavity. And an extremely small amount of water vapor entering the accommodating cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light emitting unit 1 from failing and improve the reliability of this encapsulation structure.

[0079] Example 8

[0080] This embodiment combines Embodiment 2 and Embodiment 3. Barrier grooves 8 are opened at the edges of the substrate 5 and the encapsulation cover plate 6, and the openings of the two barrier grooves 8 are arranged opposite to each other; and a diversion unit is provided in each barrier groove 8. The diversion unit in the barrier groove 8 on one side of the substrate 5 includes: an auxiliary adsorption layer 11 is provided on the bottom wall of the barrier groove 8 on the same side, and the diversion unit is installed on the auxiliary adsorption layer 11; the diversion unit in the barrier groove 8 on one side of the encapsulation cover plate 6 includes: at least one set of diversion components.

[0081] In this embodiment, the arrangement of the two diversion units is the same as that in Embodiment 5, and will not be described in detail.

[0082] As Figure 8 shown, taking the first arrangement method as an example, and the diversion members 4 of the two diversion units are staggeredly distributed; assuming that the light-emitting direction of the light-emitting unit 1 faces the bottom wall of the accommodation groove 2, the water vapor entering the barrier groove 8 is adsorbed on the conical surfaces of the diversion members 4 of the two diversion units. When a certain amount of water vapor accumulates on the diversion member 4 on one side of the encapsulation cover plate 6 to form water droplets, due to the gravity of the water droplets, they flow along the conical surface of the diversion member 4 to the bottom of the barrier groove 8 on the same side. And the water droplets formed on the diversion member on one side of the substrate 5 can drip into the barrier groove 8 on one side of the encapsulation cover plate 6 due to the gravity of the water droplets, and the auxiliary adsorption layer 11 on one side of the substrate 5 can adsorb part of the water vapor, thereby greatly reducing the water vapor entering the accommodation cavity, and the extremely small amount of water vapor entering the accommodation cavity will also be absorbed by the adsorption layer 3, which can effectively prevent the light-emitting unit 1 from failing and improve the reliability of this encapsulation structure.

[0083] Embodiment 9

[0084] Based on Embodiment 1, this embodiment provides a first metal layer 9 and a second metal layer 10 on the conical surface of the diversion member 4; the first metal layer 9 is connected to the anode of the light-emitting unit 1, and the second metal layer 10 is connected to the cathode of the light-emitting unit 1.

[0085] In this embodiment, a layer of metal is prepared on the diversion member 4 by means of evaporation coating, inkjet printing, etc. to form a metal conductive layer. The first metal layer 9 is the left metal conductive layer located in Figure 9 as the positive electrode of the diversion member 4, and the second metal layer 10 is the right metal conductive layer located in Figure 9 as the negative electrode of the diversion member 4; the first metal layer 9 is connected to the anode of the light-emitting unit 1, and the second metal layer 10 is connected to the cathode of the light-emitting unit 1, and then the shape shown in Figure 9 is formed by laser etching; after the light-emitting unit 1 is powered on, there is a potential difference between the first metal layer 9 and the second metal layer 10 in part of the diversion member 4 to form an electric field, and the electric field is used to control the water droplets aggregated in the hydrophilic area of the diversion member 4 to aggregate into larger water droplets, so that due to the gravity, they quickly flow to the hydrophobic area.

[0086] The above description is only a preferred embodiment of the present application and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. An edge encapsulation structure, characterized in that, it includes: An encapsulation body, and the encapsulation body includes: A substrate (5), and an installation surface is formed on the substrate (5); An encapsulation cover plate (6), and a receiving groove (2) is formed on one side of the encapsulation cover plate (6); the installation surface is connected to the receiving groove (2) to form a receiving cavity; a light-emitting unit (1) is arranged on the installation surface and is located in the receiving cavity; The edge of the encapsulation cover plate (6) close to the notch of the receiving groove (2) is connected to the substrate (5) through a sealing frame adhesive (7); A barrier groove (8) is formed at the connection position between the installation surface and the receiving groove (2), and it is arranged around the receiving cavity; a diversion unit is arranged in the barrier groove (8); The diversion unit includes: at least one group of diversion components; the diversion components have a plurality of uniformly arranged diversion members (4); the diversion members (4) are in a cone structure, and a hydrophobic area is formed at the part of the diversion member (4) close to the bottom end of the cone, and a hydrophilic area is formed at the part of the diversion member (4) close to the tip of the cone.

2. An edge encapsulation structure according to claim 1, characterized in that, the encapsulation body includes: An adsorption layer (3) is arranged on the installation surface and / or the bottom wall of the receiving groove (2).

3. An edge encapsulation structure according to claim 2, characterized in that, the barrier groove (8) is formed at the edge of the substrate (5) and / or the edge of the encapsulation cover plate (6).

4. An edge encapsulation structure according to claim 1, characterized in that, the diversion unit includes: an auxiliary adsorption layer (11) laid on the bottom wall of the barrier groove (8), and at least one group of diversion components are arranged on the auxiliary adsorption layer (11); the diversion components have a plurality of uniformly arranged diversion members (4).

5. An edge encapsulation structure according to claim 4, characterized in that, the end surface of the diversion member (4) at the bottom end of the cone can be connected to the auxiliary adsorption layer (11) or the bottom wall of the barrier groove (8).

6. An edge encapsulation structure according to claim 5, characterized in that, a first metal layer (9) and a second metal layer (10) are arranged on the conical surface of the diversion member (4); the first metal layer (9) is connected to the anode of the light-emitting unit (1), and the second metal layer (10) is connected to the cathode of the light-emitting unit (1).

7. An edge encapsulation structure according to claim 5, characterized in that, the height of the diversion member (4) is greater than or equal to the depth of the barrier groove (8) and less than the sum of the depth of the barrier groove (8) and the thickness of the sealing frame adhesive (7).

8. An edge encapsulation structure according to claim 1 or 4, characterized in that, the material of the diversion member (4) is fluorinated ethylene propylene.

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