Flexible micro led display and packaging method thereof

Abstract

The application provides a flexible Micro LED display screen and a packaging method thereof, which comprises a substrate, a supporting seat is installed in the interior of the substrate, an extension column is installed in the interior of the supporting seat, a gasket is connected to the top of the extension column, and the top of the gasket is connected to the bottom of a blue light Micro LED chip; the top of the blue light Micro LED chip is butted against a pixel unit, the surface of the pixel unit is butted against a color film unit, and the surface of the color film unit is butted against a protective layer; when the packaging film and the protective layer are butted against each other, optical glue is first coated on the surface of the protective layer, at this time, two groups of side plates at the bottom of the packaging film are aligned with the opening on one side of the notch, the bottom block and the push block are butted against the notch at the bottom of the protective layer, so that the bottom of the packaging film is limited to the fixed positions on the two sides of the protective layer through the two side plates, at this time, the packaging film is pressed downward so that the bottom thereof is butted against the optical glue, and therefore the precision during the installation of the packaging film can be improved through the structure during use.

Description

Technical Field

[0001] This invention belongs to the field of display screens, specifically a flexible Micro LED display screen and its packaging method. Background Technology

[0002] Flexible Micro LED display technology refers to a display technology that uses self-emissive micron-sized LEDs as light-emitting pixel units and assembles them onto a driving panel to form a high-density LED array. Due to the small size, high integration, and self-emissive characteristics of Micro LED chips, it has greater advantages over LCD and OLED in terms of brightness, resolution, contrast, energy consumption, lifespan, response speed, and thermal stability.

[0003] The overall structure of a flexible Micro LED display includes a protective layer, which is placed on the outer layer of the flexible Micro LED display. During use, the protective layer can protect a series of base layers at the bottom, thereby greatly improving the service life of the flexible Micro LED display. However, during later use, it is inevitable that the protective layer will be damaged due to various accidental collisions, so it needs to be replaced. At present, when replacing the protective layer, it is not possible to effectively connect the replacement protective layer with the outer layer of the flexible Micro LED display, and there may be misalignment during the replacement process. Therefore, it is not possible to completely shield and protect the flexible Micro LED display.

[0004] In summary, the present invention provides a flexible Micro LED display screen and its packaging method to solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a flexible Micro LED display screen and its packaging method. This addresses the issue that in existing technologies, the overall structure of a flexible Micro LED display screen includes a protective layer. This protective layer is located on the outer layer of the flexible Micro LED display screen and protects a series of underlying substrates, thus significantly extending the lifespan of the flexible Micro LED display screen. However, during later use, the protective layer inevitably gets damaged due to accidental impacts, requiring replacement. Currently, when replacing the protective layer, it is impossible to effectively align the replacement protective layer with the outer layer of the flexible Micro LED display screen, and misalignment can occur during replacement. This prevents the flexible Micro LED display screen from being completely protected.

[0006] A flexible Micro LED display screen and its packaging method include a substrate, a support base installed inside the substrate, a telescopic column installed inside the support base, a gasket connected to the top of the telescopic column, and the top of the gasket connected to the bottom of a blue Micro LED chip.

[0007] The top of the blue Micro LED chip is connected to the pixel unit, the surface of the pixel unit is connected to the color filter unit, the surface of the color filter unit is connected to the protective layer, the surface of the protective layer is coated with optical adhesive, the surface of the optical adhesive is bonded with an encapsulation film, the two sides of the encapsulation film are connected to the positioning mechanism, and a buffer mechanism is installed inside the support base.

[0008] Preferably, the positioning mechanism includes a side plate, a bottom block, a paddle, and a limiting plate. The side plate is installed on both sides of the bottom of the encapsulation film. The bottom of the side plate is fixedly connected to the bottom block. A paddle is connected to the surface of the bottom block. The top of the paddle is movably connected to one side of the limiting plate.

[0009] Preferably, the protective layer has recessed notches on both sides, and a set of rectangular limiting plates are installed at equal intervals on the upper inner wall of the notches.

[0010] Preferably, at the end of the base block away from the side plate that is in contact with the inner wall of the recess, the lever is a flexible metal sheet, the lever has an isosceles trapezoidal structure, and the surface of the lever is electroplated with a layer of insulating varnish.

[0011] Preferably, the buffer mechanism includes a spring, a connecting rod, a baffle, a docking groove, and an airbag. The bottom of the spring is fixedly connected to the inner wall of the support base, and the top of the spring is fixedly connected to the bottom of the telescopic column. The bottom of the telescopic column is provided with a docking groove, and a baffle is movably installed inside the docking groove. The bottom of the baffle is fixedly connected to the connecting rod, and the bottom of the connecting rod is fixedly connected to the surface of the airbag.

[0012] Preferably, the bottom of the airbag is adhered to the inner wall of the support base, and two airbags are provided, which are symmetrically distributed about the longitudinal midline of the support base.

[0013] Preferably, the lateral length of the baffle is greater than the length of the bottom opening of the docking groove, and the lateral dimension of the connecting rod matches the dimension of the bottom opening of the docking groove.

[0014] Preferably, the gasket is made of latex, and four gaskets are provided, with the bottom of each gasket connected to a telescopic post.

[0015] Preferably, the telescopic column has a side lug fixedly installed on one side of the end inside the support base, and one side of the side lug is slidably connected to the inner wall of the support base. The size between the two side lugs is larger than the opening size of the support base.

[0016] A flexible Micro LED display packaging method includes the following steps:

[0017] Step 1: Sequentially install the blue Micro LED chip, pixel unit, color filter unit, and protective layer into the interior of the substrate;

[0018] Step 2: Apply a layer of optical adhesive to the surface of the protective layer, and then align the bottom of the encapsulation film with the optical adhesive;

[0019] Step 3: When the bottom of the encapsulation film is aligned with the optical adhesive, insert the bottom block of the encapsulation film into the notch so that the pick is also installed into the notch at the same time.

[0020] Step 4: At this point, the movement trajectory of the encapsulation film will be restricted, so that the encapsulation film and the protective layer remain consistent during the docking process, and finally the encapsulation of the Micro LED display is completed.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In this invention, when the encapsulation film and the protective layer are joined, optical adhesive is first applied to the surface of the protective layer. At this time, the two sets of side plates at the bottom of the encapsulation film are aligned with the opening on one side of the notch, so that the bottom block and the push block are joined with the notch at the bottom of the protective layer. In this way, the bottom of the encapsulation film will be restricted to a fixed position on both sides of the protective layer by the side plates on both sides. Then, the encapsulation film is pressed down so that its bottom is joined with the optical adhesive. Thus, the accuracy of the encapsulation film during use can be improved by this structure.

[0023] 2. The present invention achieves this by transmitting the pressure from the encapsulation film to the blue MicroLED chip when the encapsulation film is compressed. The blue MicroLED chip then compresses the gasket, which in turn compresses the telescopic column downwards. As the telescopic column moves downwards, it compresses the spring and the airbag. Thus, the structure described above can mitigate the final impact force during use, thereby improving the safety of the blue MicroLED chip during use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 This is a side cross-sectional view of the present invention;

[0026] Figure 3This is a schematic diagram of the blue Micro LED chip assembly structure of the present invention;

[0027] Figure 4 This is an enlarged schematic diagram of the present invention (A).

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the support base of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the gasket of the present invention.

[0030] In the diagram: 1. Substrate; 2. Support base; 3. Telescopic column; 4. Gasket; 5. Blue Micro LED chip; 6. Pixel unit; 7. Color filter unit; 8. Protective layer; 9. Optical adhesive; 10. Encapsulation film; 11. Side plate; 12. Bottom block; 13. Paddle; 14. Limiting plate; 15. Spring; 16. Connecting rod; 17. Baffle; 18. Docking groove; 19. Airbag. Detailed Implementation

[0031] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0032] like Figure 1-6 As shown, the present invention provides a flexible Micro LED display screen and its packaging method, including a substrate 1, a support base 2 installed inside the substrate 1, a telescopic column 3 installed inside the support base 2, a gasket 4 connected to the top of the telescopic column 3, and the top of the gasket 4 connected to the bottom of the blue Micro LED chip 5.

[0033] The top of the blue Micro LED chip 5 is connected to the pixel unit 6, the surface of the pixel unit 6 is connected to the color filter unit 7, the surface of the color filter unit 7 is connected to the protective layer 8, the surface of the protective layer 8 is coated with optical adhesive 9, the surface of the optical adhesive 9 is bonded with the encapsulation film 10, the two sides of the encapsulation film 10 are connected to the positioning mechanism, and a buffer mechanism is installed inside the support base 2.

[0034] Please refer to Figure 4 The positioning mechanism includes a side plate 11, a bottom block 12, a lever 13, and a limiting plate 14. The side plate 11 is installed on both sides of the bottom of the encapsulation film 10. The bottom of the side plate 11 is fixedly connected to the bottom block 12. The surface of the bottom block 12 is connected to the lever 13. The top of the lever 13 is movably connected to one side of the limiting plate 14.

[0035] Please refer to Figure 4 The protective layer 8 has recessed notches on both sides, and a set of rectangular limiting plates 14 are installed at equal intervals on the upper inner wall of the notches.

[0036] Please refer to Figure 4At the end of the bottom block 12 away from the side plate 11, it is in contact with the inner wall of the recess. The lever 13 is a flexible metal sheet with an isosceles trapezoidal structure. The surface of the lever 13 is electroplated with a layer of insulating paint.

[0037] Please refer to Figure 5 The buffer mechanism includes a spring 15, a connecting rod 16, a baffle 17, a docking groove 18, and an airbag 19. The bottom of the spring 15 is fixedly connected to the inner wall of the support base 2, and the top of the spring 15 is fixedly connected to the bottom of the telescopic column 3. The bottom of the telescopic column 3 has a docking groove 18, and the baffle 17 is movably installed inside the docking groove 18. The bottom of the baffle 17 is fixedly connected to the connecting rod 16, and the bottom of the connecting rod 16 is fixedly connected to the surface of the airbag 19. When the docking groove 18 moves to its maximum stroke, it will squeeze the baffle 17. When the baffle 17 is squeezed, it will drive the connecting rod 16 to squeeze. When the connecting rod 16 is squeezed, it will squeeze the airbag 19. In this way, the airbag 19 can offset the impact force transmitted from above.

[0038] Please refer to Figure 5 The bottom of the airbag 19 is bonded to the inner wall of the support 2. There are two airbags 19, and the two airbags 19 are symmetrically distributed about the longitudinal midline of the support 2.

[0039] Please refer to Figure 5 The lateral length of the baffle 17 is greater than the length of the bottom opening of the mating groove 18, and the lateral dimension of the connecting rod 16 matches the dimension of the bottom opening of the mating groove 18.

[0040] Please refer to Figure 1 and 6 The gasket 4 is made of latex material, and there are four gaskets 4. The bottom of each gasket 4 is connected to a telescopic post 3. When the blue Micro LED chip 5 is squeezed, the gasket 4 can reduce the damage during contact, thereby improving the safety of the blue Micro LED chip 5.

[0041] Please refer to Figure 5 The telescopic column 3 is located inside the support base 2. One side of the telescopic column 3 is fixedly installed on both sides. One side of the side ear is slidably connected to the inner wall of the support base 2. The size between the two side ears is larger than the opening size of the support base 2. When in use, the telescopic column 3 will be restricted by the side ears on both sides, so that the telescopic column 3 cannot move further upward when it rises to the maximum height, so as to ensure the effectiveness of the docking between the telescopic column 3 and the support base 2.

[0042] A flexible Micro LED display packaging method includes the following steps:

[0043] Step 1: Install the blue Micro LED chip 5, pixel unit 6, color filter unit 7 and protective layer 8 into the interior of the substrate 1 in sequence;

[0044] Step 2: Coat a layer of optical adhesive 9 on the surface of the protective layer 8, and then align the bottom of the encapsulation film 10 with the optical adhesive 9.

[0045] Step 3: When the bottom of the encapsulation film 10 is aligned with the optical adhesive 9, the bottom block 12 of the encapsulation film 10 is inserted into the notch, so that the paddle 13 is also installed into the notch at the same time.

[0046] Step 4: At this point, the movement trajectory of the encapsulation film 10 will be restricted, so that the encapsulation film 10 and the protective layer 8 remain consistent during the docking process, and finally the encapsulation of the Micro LED display screen is completed.

[0047] Specific working principle: such as Figure 1-6 As shown, when using this flexible Micro LED display and its encapsulation method, firstly, when aligning the encapsulation film 10 with the protective layer 8, optical adhesive 9 is first applied to the surface of the protective layer 8. At this time, the two sets of side plates 11 at the bottom of the encapsulation film 10 are aligned with the opening on one side of the recess, so that the bottom block 12 contacts the inner wall of the recess. Then, the encapsulation film 10 is moved. When the encapsulation film 10 moves, it will move in the recess along a fixed trajectory through the two side plates 11 and the bottom block 12, so that the encapsulation film 10 will not be misaligned during the alignment. Thus, the accuracy of the encapsulation film 10 during installation can be improved through this structure.

[0048] Secondly, after the encapsulation film 10 is squeezed, the squeezing force on the encapsulation film 10 will eventually be transmitted to the blue Micro LED chip 5. At this time, the blue Micro LED chip 5 will squeeze the pad 4. After the pad 4 is squeezed, it will squeeze the telescopic column 3 downward. When the telescopic column 3 moves downward, it will squeeze and drive the spring 15 and the docking groove 18. When the spring 15 is squeezed, it will offset part of the squeezing force through its own elasticity. At the same time, when the docking groove 18 moves to its maximum stroke, it will squeeze the baffle 17. When the baffle 17 is squeezed, it will drive the connecting rod 16 to squeeze. When the connecting rod 16 is squeezed, it will squeeze the airbag 19. In this way, the airbag 19 will further offset the impact force transmitted from above. Finally, the squeezing force can be reduced through the above structure during use, so as to improve the safety of the blue Micro LED chip 5 during use. This is the feature of the flexible Micro LED display and its encapsulation method.

[0049] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flexible Micro LED display screen comprising a substrate (1), characterized in that: The inside of the substrate (1) is provided with a support seat (2), the inside of the support seat (2) is provided with a telescopic column (3), the top of the telescopic column (3) is connected with a gasket (4), and the top of the gasket (4) is connected to the bottom of a blue light Micro LED chip (5); The top of the blue light Micro LED chip (5) is connected with a pixel unit (6), the surface of the pixel unit (6) is connected with a color film unit (7), the surface of the color film unit (7) is connected with a protective layer (8), the surface of the protective layer (8) is coated with optical glue (9), the surface of the optical glue (9) is bonded with an encapsulation film (10), the two sides of the encapsulation film (10) are connected with a positioning mechanism, and the inside of the support seat (2) is provided with a buffering mechanism. 2.The flexible Micro LED display screen of claim 1, wherein: The positioning mechanism comprises side plates (11), a bottom block (12), a tab (13) and a limiting plate (14), the two sides of the bottom of the encapsulation film (10) are provided with the side plates (11), the bottom of the side plate (11) is fixedly connected with the bottom block (12), the surface of the bottom block (12) is connected with the tab (13), and the top of the tab (13) is movably connected with one side of the limiting plate (14). 3.The flexible Micro LED display screen of claim 1, wherein: The two sides of the protective layer (8) are provided with recesses, and a group of rectangular limiting plates (14) are arranged at equal intervals on the inner wall of the recesses.

4. The flexible Micro LED display screen as described in claim 2, characterized in that: The end of the bottom block (12) away from the side plate (11) is movably connected with the inner wall of the recess, the tab (13) is a flexible metal sheet, the tab (13) has an isosceles trapezoidal structure, and an insulating paint layer is coated on the surface of the tab (13).

5. The flexible Micro LED display screen as described in claim 1, characterized in that: The buffering mechanism comprises a spring (15), a connecting rod (16), a baffle (17), a connecting groove (18) and an air bag (19), the bottom of the spring (15) is fixedly connected with the inner wall of the support seat (2), the top of the spring (15) is fixedly connected with the bottom of the telescopic column (3), the bottom of the telescopic column (3) is provided with the connecting groove (18), the baffle (17) is movably arranged in the connecting groove (18), the bottom of the baffle (17) is fixedly connected with the connecting rod (16), and the bottom of the connecting rod (16) is fixedly connected with the surface of the air bag (19).

6. The flexible Micro LED display screen of claim 5, wherein: The bottom of the air bag (19) is bonded to the inner wall of the support seat (2), and the air bag (19) is provided with two air bags (19), and the two air bags (19) are symmetrically distributed about the longitudinal center line of the support seat (2).

7. The flexible Micro LED display screen of claim 5, wherein: The transverse length of the baffle (17) is greater than the opening length of the bottom of the connecting groove (18), and the transverse dimension of the connecting rod (16) matches the opening dimension of the bottom of the connecting groove (18). 8.The flexible Micro LED display screen of claim 1, wherein: The gasket (4) is made of latex, and the gasket (4) is provided with four gaskets (4), and the bottom of each gasket (4) is connected with a telescopic column (3). 9.The flexible Micro LED display screen of claim 1, wherein: The two sides of the end of the telescopic column (3) in the support seat (2) are respectively fixedly provided with a side lug, one side of the side lug is slidably connected with the inner wall of the support seat (2), and the size between the two side lugs is greater than the opening size of the support seat (2). 10.A method for packaging a flexible Micro LED display screen, characterized in that, The flexible Micro LED display screen according to any one of claims 1-9 comprises the following steps: First step: sequentially install a blue light Micro LED chip (5), a pixel unit (6), a color film unit (7) and a protective layer (8) into the inside of a substrate (1); Second step: coat a layer of optical glue (9) on the surface of the protective layer (8), and then butt the bottom of an encapsulation film (10) with the optical glue (9); Third step: when the bottom of the encapsulation film (10) is butted with the optical glue (9), butt the bottom block (12) at the bottom of the encapsulation film (10) with the notch, so that the dial piece (13) is also simultaneously installed into the notch; Fourth step: the movement track of the encapsulation film (10) is limited at this time, so that the encapsulation film (10) and the protective layer (8) always keep consistent during the butt joint process, and finally the encapsulation of the Micro LED display screen is completed.

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