A waterproof flexible screen and a manufacturing method thereof

Abstract

The present invention discloses a waterproof flexible screen and a manufacturing method thereof, the technical scheme of which includes a flexible substrate, the upper lower end of the flexible substrate is sequentially provided with electronic components and an FPC flexible board, the upper side of the flexible substrate is provided with an electronic paper located at the upper end of the electronic components, and a waterproof protective film is provided on the upper side of the electronic paper and the lower side of the flexible substrate, an edge-sealing glue wrapping the electronic paper is provided between the flexible substrate and the corresponding waterproof protective film, and one end of the FPC flexible board is plugged into the edge-sealing glue. The present invention has a waterproof protective film provided on the lower side of the flexible substrate and the upper side of the electronic paper, and then an edge-sealing glue is provided on the outer side of the electronic paper to wrap the electronic components and the electronic paper, which plays a role in significantly improving the waterproof performance of the overall structure of the waterproof flexible screen, and effectively preventing moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of the electronic components, the electronic paper and the flexible screen.

Description

Technical Field

[0001] The present invention relates to a flexible screen of an electronic device, and more particularly to a waterproof flexible screen and a manufacturing method thereof. Background Art

[0002] Flexible screen refers to flexible OLED. The successful mass production of flexible screens is not only a great boon to the manufacturing of a new generation of high-end smartphones, but also has a profound impact on the application of wearable devices due to its low power consumption and bendability. In the future, flexible screens will be widely used as personal smart terminals continue to penetrate.

[0003] A Chinese patent with publication number CN108198519A discloses an LED flexible display screen, including a flexible carrier and a plurality of LED modules arranged on the flexible carrier, wherein the LED modules include a plurality of LED light-emitting diodes connected in series and arranged in an array, the LED modules are arranged in an array, the LED modules are coated with a silicone body, and the spacing between two adjacent LED light-emitting diodes on the LED modules is 1.5 mm to 2.0 mm.

[0004] However, the LED flexible display screen only plays a certain waterproof role through the silicone coating on the outside of the LED module, and it is difficult to achieve an effective and stable waterproof effect, which needs to be improved. Summary of the invention

[0005] In view of the shortcomings of the prior art, a first object of the present invention is to provide a waterproof flexible screen, which has the effect of effectively preventing moisture from penetrating.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A waterproof flexible screen comprises a flexible substrate, wherein electronic components and an FPC flexible board are sequentially arranged at the lower end of the upper side of the flexible substrate, an electronic paper located at the upper end of the electronic components is arranged on the upper side of the flexible substrate, and a waterproof protective film is arranged on the upper side of the electronic paper and the lower side of the flexible substrate, an edge sealing glue wrapping the electronic paper is arranged between the flexible substrate and the corresponding waterproof protective film, and one end of the FPC flexible board is inserted into the edge sealing glue.

[0008] By adopting the above technical solution, a waterproof protective film is arranged on the lower side of the flexible substrate and the upper side of the electronic paper, and then an edge sealing glue is arranged on the outer side of the electronic paper to wrap the electronic components and the electronic paper, which can significantly improve the waterproof performance of the overall structure of the waterproof flexible screen, and effectively prevent moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of the electronic components, electronic paper and flexible screen.

[0009] The present invention is further configured as follows: the electronic components are sleeved with a steel sheet cover whose upper side is flush with the corresponding waterproof protective film, the corresponding waterproof protective film is provided with an inner groove matching the cover, and a sealant is provided on the outer circumference of the cover to connect and seal the cover and the inner groove.

[0010] By adopting the above technical solution, the steel sheet cover plays an effective role in protecting the electronic components, and achieves the purpose of effective waterproofing after the sealant connects and seals the cover and the inner groove, so that the connection stability between the electronic components and the flexible substrate is effectively improved.

[0011] The present invention is further configured as follows: a reinforcing plate with matching thickness is provided on the lower side of the waterproof protective film, a sealant connected and sealed with the corresponding waterproof protective film is provided on the outer circumference of the reinforcing plate, and the reinforcing plate is located directly below the electronic component.

[0012] By adopting the above technical solution, the reinforcing plate located in the waterproof protective film on the lower side plays an effective supporting and fixing role for the electronic components, further improving the connection stability between the electronic components and the flexible substrate.

[0013] The present invention is further configured as follows: the waterproof protective film is a polystyrene film.

[0014] By adopting the above technical solution, the colorless, transparent polystyrene with high structural strength will play an effective role in heat insulation, light transmission and moisture blocking.

[0015] A second object of the present invention is to provide a method for manufacturing a waterproof flexible screen, comprising the following steps:

[0016] Step 1, fixing the electronic paper and the FPC flexible board on the upper side of the flexible substrate;

[0017] Step 2: attaching polystyrene films to the upper end of the electronic paper and the lower end of the flexible substrate, and reserving inner grooves at the lower ends of the upper and lower polystyrene films;

[0018] Step 3, fixing the electronic components and the steel sheet cover wrapping the electronic components in the inner groove of the polystyrene film located on the upper side, and applying sealant on one side of the outer circumference of the cover to connect the sealing cover with the corresponding polystyrene film;

[0019] Step 4, fix the reinforcing plate in the inner groove of the polystyrene film located at the lower side, and apply sealant on the outer circumference of the reinforcing plate to connect and seal the reinforcing plate and the corresponding polystyrene film;

[0020] Step 5: Apply edge-sealing glue on the outer side of the electronic paper and bake it into shape.

[0021] By adopting the above technical solution, the obtained waterproof flexible screen has a strong waterproof performance, which can effectively prevent moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of electronic components, electronic paper and flexible screen; at the same time, it can effectively protect the electronic components, and achieve the purpose of effective waterproofing after the sealant connects and seals the cover and the inner groove, so that the connection stability between the electronic components and the flexible substrate is effectively improved.

[0022] The present invention is further configured as follows: in step 2, the flexible substrate is formed with a substrate OD surface, and the peripheries of the polystyrene films are all located outside the corresponding substrate OD surface.

[0023] By adopting the above technical solution, the polystyrene film can fully cover the flexible substrate to achieve effective waterproofing, thereby preventing moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of electronic components, electronic paper and the flexible screen.

[0024] The present invention is further configured as follows: in step 5, after the edge sealing adhesive is baked, the polystyrene film protruding from the OD surface of the substrate is cut by laser.

[0025] By adopting the above technical solution, the polystyrene film protruding from the OD surface of the substrate is cut by laser, so that a neat cut surface is formed on the outer side of the waterproof flexible screen, which significantly improves the structural stability and appearance of the waterproof flexible screen and is suitable for practical use.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. By setting a polystyrene film on the lower side of the flexible substrate and the upper side of the electronic paper, and then setting an edge sealing glue on the outer side of the electronic paper to wrap the electronic components and the electronic paper, the waterproof performance of the overall structure of the waterproof flexible screen is significantly improved;

[0028] 2. The steel cover can effectively protect the electronic components, and after the sealant connects and seals the cover and the inner groove, it can achieve effective waterproofing;

[0029] 3. The reinforcing plate can effectively support and fix the electronic components, further improving the connection stability between the electronic components and the flexible substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 2 is a front view of the structure of the present embodiment;

[0031] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of this embodiment.

[0033] Explanation of the reference numerals: 1. electronic paper; 11. inner groove; 2. flexible substrate; 21. OD surface of substrate; 22. edge sealing glue; 3. waterproof protective film; 4. cover; 5. sealant; 6. FPC flexible board; 7. electronic components; 8. reinforcement board. DETAILED DESCRIPTION

[0034] In order to make the technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, a waterproof flexible screen comprises a flexible substrate 2 and an electronic component 7 and an FPC flexible board 6 arranged at the upper and lower ends of the flexible substrate 2 in sequence. An electronic paper 1 located at the upper end of the electronic component 7 is arranged on the upper side of the flexible substrate 2, and a waterproof protective film 3 is arranged on the upper side of the electronic paper 1 and the lower side of the flexible substrate 2. Then, by arranging an edge sealant 22 wrapping the electronic paper 1 between the flexible substrate 2 and the corresponding waterproof protective film 3, and inserting one end of the FPC flexible board 6 into the edge sealant 22, the waterproof performance of the overall structure of the waterproof flexible screen will be significantly improved, and moisture will be effectively prevented from penetrating into the waterproof flexible screen to affect the connection stability and normal operation of the electronic component 7, the electronic paper 1 and the flexible screen. The waterproof protective film 3 is a polystyrene film. Since the polystyrene film is colorless, transparent and has high structural strength, the polystyrene will play an effective role in heat insulation, light transmission and water blocking.

[0036] like Figure 1 , Figure 2 As shown, the electronic component 7 is sleeved with a steel sheet cover 4 whose upper side is flush with the corresponding polystyrene film. The corresponding polystyrene film is provided with an inner groove 11 matching the cover 4, and a sealant 5 connecting and sealing the steel sheet cover 4 and the inner groove 11 is provided on the outer circumference of the cover 4, so that the steel sheet cover 4 plays an effective role in protecting the electronic component 7, and after the sealant 5 connects and seals the cover 4 and the inner groove 11, the purpose of effective waterproofing is achieved, so that the connection stability between the electronic component 7 and the flexible substrate 2 is effectively improved.

[0037] like Figure 1 , Figure 3 As shown, the polystyrene film at the lower side is provided with a reinforcing plate 8 with matching thickness. The outer circumference of the reinforcing plate 8 is provided with a sealant 5 connected and sealed with the corresponding polystyrene film, and the reinforcing plate 8 is located directly below the electronic component 7, so that the reinforcing plate 8 in the polystyrene film at the lower side can effectively support and fix the electronic component 7, further improving the connection stability between the electronic component 7 and the flexible substrate 2.

[0038] According to the present invention, a method for manufacturing a waterproof flexible screen is also provided, comprising the following steps:

[0039] Step 1, fixing the electronic paper 1 and the FPC flexible board 6 on the upper side of the flexible substrate 2;

[0040] Step 2, attaching polystyrene films to the upper end of the electronic paper 1 and the lower end of the flexible substrate 2, the flexible substrate 2 is formed with a substrate OD surface 21, and the outer peripheries of the polystyrene films are all located outside the corresponding substrate OD surface 21, and inner grooves 11 are reserved at the lower ends of the upper and lower polystyrene films;

[0041] Step 3, fixing the electronic component 7 and the steel sheet cover 4 wrapping the electronic component 7 in the inner groove 11 of the polystyrene film located on the upper side, and applying sealant 5 on the outer circumference of the cover 4 to connect the sealing cover 4 and the corresponding polystyrene film;

[0042] Step 4, fix the reinforcing plate 8 in the inner groove 11 of the polystyrene film located at the lower side, and apply sealant 5 on the outer circumference of the reinforcing plate 8 to connect and seal the reinforcing plate 8 with the corresponding polystyrene film;

[0043] Step 5: Apply edge sealing glue 22 on the outer side of the electronic paper 1 and bake it into shape;

[0044] Step 6: After the edge sealing adhesive 22 in step 5 is baked, the polystyrene film protruding from the OD surface 21 of the substrate is cut by laser.

[0045] Therefore, the waterproof flexible screen prepared by the above-mentioned manufacturing method of the waterproof flexible screen has a strong waterproof performance, which effectively prevents moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of the electronic components 7, the electronic paper 1 and the flexible screen; making the outer periphery of the polystyrene film protrude from the OD surface 21 of the substrate will achieve the effective waterproof purpose of facilitating the waterproof protective film 3 to form a comprehensive coverage of the flexible substrate 2, and prevent moisture from penetrating into the waterproof flexible screen and affecting the connection stability and normal operation of the electronic components 7, the electronic paper 1 and the flexible screen; at the same time, it effectively protects the electronic components 7, and achieves the purpose of effective waterproofing after the sealant 5 connects and seals the cover 4 and the inner groove 11, so that the connection stability of the electronic components 7 and the flexible substrate 2 is effectively improved; and then after the laser laser cuts the polystyrene film protruding from the OD surface 21 of the substrate, a neat cut surface is formed on the outer periphery of the waterproof flexible screen, which significantly improves the structural stability and appearance of the waterproof flexible screen, and is suitable for practical use.

[0046] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some modifications and embellishments without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A waterproof flexible screen, comprising a flexible substrate (2), wherein electronic components (7) and an FPC flexible board (6) are sequentially arranged at the upper and lower ends of the flexible substrate (2), characterized in that: An electronic paper (1) located at the upper end of the electronic component (7) is arranged on the upper side of the flexible substrate (2), and a waterproof protective film (3) is arranged on the upper side of the electronic paper (1) and the lower side of the flexible substrate (2); an edge sealing glue (22) wrapping the electronic paper (1) is arranged between the flexible substrate (2) and the corresponding waterproof protective film (3); one end of the FPC flexible board (6) is inserted into the edge sealing glue (22); the electronic component (7) is sleeved with a steel sheet cover (4) whose upper side is flush with the corresponding waterproof protective film (3); ), the corresponding waterproof protective film (3) is provided with an inner groove (11) matching the cover (4), and a sealant (5) connecting and sealing the cover (4) and the inner groove (11) is provided on the outer side of the cover (4); the waterproof protective film (3) located at the lower side is provided with a reinforcing plate (8) of matching thickness, and a sealant (5) connecting and sealing the corresponding waterproof protective film (3) is provided on the outer side of the reinforcing plate (8), and the reinforcing plate (8) is located directly below the electronic component (7); the waterproof protective film (3) is a polystyrene film.

2. A method for manufacturing a waterproof flexible screen, characterized in that: The steps include: Step 1, fixing the electronic paper (1) and the FPC flexible board (6) on the upper side of the flexible substrate (2); Step 2: attaching polystyrene films to the upper end of the electronic paper (1) and the lower end of the flexible substrate (2), and reserving inner grooves (11) at the lower ends of the upper and lower polystyrene films; Step 3, fixing the electronic component (7) and the steel sheet cover (4) wrapping the electronic component (7) in the inner groove (11) of the polystyrene film located on the upper side, and applying sealant (5) on the outer circumference of the cover (4) to connect the sealing cover (4) and the corresponding polystyrene film; Step 4, fixing the reinforcing plate (8) in the inner groove (11) of the polystyrene film located at the lower side, and applying sealant (5) on the outer circumference of the reinforcing plate (8) to connect the sealing reinforcing plate (8) and the corresponding polystyrene film; Step 5: Apply edge sealing glue (22) on the outer side of the electronic paper (1) and bake it into shape.

3. The method for manufacturing a waterproof flexible screen according to claim 2, characterized in that: In step 2, the flexible substrate (2) is formed with a substrate OD surface (21), and the peripheries of the polystyrene films are all located outside the corresponding substrate OD surface (21).

4. The method for manufacturing a waterproof flexible screen according to claim 3, characterized in that: In step 5, after the edge sealing adhesive (22) is baked, the polystyrene film protruding from the OD surface (21) of the substrate is cut by laser.

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