Electronic paper display card without power supply

Abstract

The utility model discloses a power-free electronic paper display card which comprises a control module, the control module comprises a circuit board and an electronic paper ink screen used for displaying information, an NFC communication module is integrated on the circuit board, and the circuit board is electrically connected with the electronic paper ink screen; the screen printer further comprises a middle frame, a front screen printing panel and a rear screen printing panel, the middle frame is of a hollow structure, the middle frame is formed by punching a non-injection-molded plastic plate, the front screen printing panel and the rear screen printing panel are arranged on the two sides of the middle frame respectively and connected with the end face of the middle frame in a sealed mode respectively, and a containing cavity is defined by the middle frame, the front screen printing panel and the rear screen printing panel. The control module is arranged in the containing cavity in a limited mode. A built-in battery is not needed, so that the overall size of the display board is reduced, a product is lighter and thinner, and the manufacturing cost of the display board is also reduced. And on the other hand, the frame body is formed by punching the plastic plate, an injection mold does not need to be designed, the production period is shortened, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic paper display card technology, specifically to a power-free electronic paper display card. Background Technology

[0002] Existing display boards are mainly LED and LCD displays, but these types of displays still have the following problems:

[0003] 1. Reliance on battery power: LEDs and LCDs require continuous power and need to have built-in batteries, which increases the size of the display and the manufacturing cost.

[0004] 2. Existing display boards all require the use of housings for installation, and the housings are injection molded parts, which require injection molds, resulting in high costs and long production cycles; on the other hand, due to their structural limitations, it is difficult to achieve a thinner and lighter design. Utility Model Content

[0005] To address some or all of the problems existing in the prior art, this utility model provides a power-free electronic paper display card, including a control module. The control module includes a circuit board and an electronic paper ink screen for displaying information. An NFC communication module is integrated on the circuit board, and the circuit board is electrically connected to the electronic paper ink screen. It also includes a middle frame, a front silkscreen panel, and a rear silkscreen panel. The middle frame has a hollow structure and is punched from a non-injection molded plastic sheet. The front silkscreen panel and the rear silkscreen panel are respectively disposed on both sides of the middle frame and are respectively sealed to the end face of the middle frame. The middle frame, the front silkscreen panel, and the rear silkscreen panel together form a receiving cavity, and the control module is positioned and placed within the receiving cavity.

[0006] As a further improvement of this utility model, a first adhesive layer is provided between the front screen printing panel and the middle frame, and a second adhesive layer is provided between the rear screen printing panel and the middle frame.

[0007] As a further improvement of this utility model, the gap between the control module and the receiving cavity is filled with glue.

[0008] As a further improvement of this utility model, the adhesive is epoxy resin or silicone.

[0009] As a further improvement of this utility model, a transparent window is provided at the position corresponding to the electronic paper ink screen on the front silkscreen panel.

[0010] As a further improvement of this utility model, a hanging hole is provided at one end of the middle frame, and clearance holes are provided at the corresponding positions of the front silkscreen panel and the rear silkscreen panel.

[0011] As a further improvement of this utility model, the thickness of the middle frame is 0.3-1mm, and the material is polycarbonate or PET.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention enables wireless power replenishment and refresh via an NFC communication module, eliminating the need for a built-in battery. This reduces the overall size of the display board, making it thinner and lighter, and lowering manufacturing costs. Furthermore, the frame is made from die-cut plastic sheeting, eliminating the need for injection molds, shortening the production cycle, and improving efficiency. Attached Figure Description

[0014] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0016] Figure 2 This is an exploded structural diagram of an embodiment of the present invention. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0018] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figure 1-2 As shown, a powerless electronic paper display card includes a middle frame 1, a front silkscreen panel 2, a rear silkscreen panel 3, and a control module. The middle frame 1 has a hollow structure and is made of non-injection molded plastic sheet by die-cutting. The front silkscreen panel 2 and the rear silkscreen panel 3 are respectively disposed on both sides of the middle frame 1 and are sealed to the end face of the middle frame 1. The middle frame 1, the front silkscreen panel 2, and the rear silkscreen panel 3 together form a receiving cavity 11, in which the control module is contained and positioned. This powerless electronic paper display card encapsulates the control module internally through the cooperation of the middle frame 1, the front silkscreen panel 2, and the rear silkscreen panel 3, eliminating the need for an injection molded shell and mold opening, thus shortening the production cycle and reducing manufacturing costs of electronic paper display cards, and improving production efficiency.

[0021] In this embodiment, the middle frame 1 is made of PET sheet with a thickness of 0.3 mm. In other embodiments, the middle frame 1 can also be made of other materials, such as polycarbonate, and its thickness only needs to be no more than 1 mm.

[0022] The control module includes a circuit board 4 and an electronic paper ink screen 5 for displaying information. The circuit board 4 integrates an NFC communication module and is electrically connected to the electronic paper ink screen 5. In practical use, a mobile device with NFC functionality is brought close to the powerless electronic paper display card. The NFC chip on the mobile device pairs with the NFC communication module on the circuit board 4, thereby enabling information transmission and electromagnetic induction power supply to the powerless electronic paper display card. Therefore, this powerless electronic paper display card can wirelessly draw power and refresh information from external devices via the NFC communication module, eliminating the need for a built-in battery. This reduces the overall size of the display, making the product thinner and lighter, and also lowering the manufacturing cost.

[0023] In this embodiment, a first adhesive layer 6 is provided between the front screen-printed panel 2 and the middle frame 1, thereby sealing the front screen-printed panel 2 and the middle frame 1. A second adhesive layer 7 is provided between the rear screen-printed panel 3 and the middle frame 1, thereby sealing the rear screen-printed panel 3 and the middle frame 1. In other embodiments, other sealing connection methods can be used between the front screen-printed panel 2 and the rear screen-printed panel 3 and the middle frame 1, such as snap-fit ​​connections.

[0024] To ensure the control module is fixed within the middle frame 1, adhesive is filled into the gap between the control module and the receiving cavity 11. This adhesive filling helps to fix the circuit board 4 and the electronic paper ink screen 5 within the middle frame 1, improving structural stability; it also enhances the waterproof performance of the powerless electronic paper display card.

[0025] In this embodiment, epoxy resin is used as the filler adhesive; in other embodiments, other existing adhesives, such as silicone, can also be used as the filler adhesive.

[0026] To meet display requirements, a transparent window 21 is provided on the front silkscreen panel 2 at a position corresponding to the e-paper ink screen 5, allowing users to view the displayed content of the e-paper ink screen 5 from the outside. Silkscreen layers are provided on other positions of the front silkscreen panel 2 and the rear silkscreen panel 3, preventing users from seeing the internal structure from the outside and enhancing the aesthetics of this powerless e-paper display card.

[0027] For easy mounting, a lanyard hole 12 is provided at one end of the middle frame 1, and clearance holes 22 are provided at the corresponding positions of the front silkscreen panel 2 and the rear silkscreen panel 3. In actual use, the user can pass the lanyard through the clearance hole 22 and the lanyard hole 12 to mount the powerless electronic paper display card in a certain position for use.

[0028] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A power-free electronic paper display card, characterized in that: The system includes a control module, which comprises a circuit board and an electronic paper ink screen for displaying information. The circuit board integrates an NFC communication module and is electrically connected to the electronic paper ink screen. It also includes a middle frame, a front screen printing panel, and a rear screen printing panel. The middle frame has a hollow structure and is made of non-injection molded plastic sheet by punching. The front screen printing panel and the rear screen printing panel are respectively disposed on both sides of the middle frame and are respectively sealed to the end face of the middle frame. The middle frame, the front screen printing panel, and the rear screen printing panel together form a receiving cavity, and the control module is limited and placed in the receiving cavity.

2. The power-free electronic paper display card according to claim 1, characterized in that: A first adhesive layer is provided between the front screen-printed panel and the middle frame, and a second adhesive layer is provided between the rear screen-printed panel and the middle frame.

3. The power-free electronic paper display card according to claim 2, characterized in that: The gap between the control module and the receiving cavity is filled with glue.

4. The power-free electronic paper display card according to claim 3, characterized in that: The adhesive is epoxy resin or silicone.

5. The power-free electronic paper display card according to claim 1, characterized in that: The front silkscreen panel has a transparent window at the position corresponding to the electronic paper ink screen.

6. The power-free electronic paper display card according to claim 1, characterized in that: One end of the middle frame is provided with a lanyard hole, and the front and rear silkscreen panels are respectively provided with clearance holes at the corresponding positions of the lanyard hole.

7. The power-free electronic paper display card according to claim 1, characterized in that: The thickness of the middle frame is 0.3-1mm, and the material is polycarbonate or PET.

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