Electronic shelf label and manufacturing method thereof

Abstract

The present invention provides an electronic shelf label and a manufacturing method thereof, wherein the method comprises: assembling a PCBA and an electronic paper display screen together, welding a battery to the PCBA to form an electrical component; placing a middle frame on a first PET film, the middle frame and the first PET film forming a first accommodation space, injecting epoxy resin glue into the first accommodation space to form a first sealing layer; fixing one side of the battery of the electrical component on the first sealing layer, the middle frame and one side of the electronic paper display screen of the electrical component forming a second accommodation space, injecting epoxy resin glue into the second accommodation space to form a second sealing layer; placing a second PET film on the second sealing layer, performing a pressing and curing treatment; after the first sealing layer and the second sealing layer are cured, a complete potting colloid for isolating external water vapor is formed. The electronic shelf label provided by the above technical solution has a long service life, a thin thickness and is easy to realize automated production.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic shelf labels, and in particular to an electronic shelf label and a manufacturing method thereof. Background Art

[0002] like Figure 1 As shown, the existing electronic shelf labels (ESL) are, from left to right: protective lens (Lens), electronic paper display screen (Screen), silica gel (Silica gel), assembled printed circuit board (PCBA), shell (Frame) and battery box (Battery). The functions of each component are: the protective lens and silica gel provide protection for the electronic paper display screen to prevent external impact and fall damage to the electronic paper display screen; the assembled printed circuit board realizes the relevant functions of the electronic shelf label; the button battery in the battery box provides power for the electronic shelf label. The manufacturing process of the electronic shelf label is: the welded circuit board is fixed to the shell by a buckle; the protective lens is fixed to the shell by hot melt adhesive or ultrasonic welding. The disadvantages of this electronic shelf label solution include:

[0003] 1. It is impossible to completely isolate water molecules. After long-term use, water molecules can easily invade the inside of the product from the edge sealing, and then invade the electronic paper, the main material of the electronic paper display screen. Electronic paper is sensitive to water vapor, causing the characteristics of the electronic paper to change, resulting in abnormal display and product failure.

[0004] 2. The existing solution uses conventional technology, which makes it difficult to achieve a lightweight design for the product. The entire product is heavy, which is very different from traditional paper electronic shelf labels, and creates obstacles to the comprehensive use of electronic shelf labels.

[0005] 3. The assembly of shelf label products involves many manual steps and cannot be fully automated.

[0006] To address the above problems, no effective solution has been proposed yet. Summary of the invention

[0007] An embodiment of the present invention provides a method for manufacturing an electronic shelf label, which is used to provide an electronic shelf label with a long service life, a thin thickness and easy to realize automated production. The method comprises:

[0008] Assemble the assembled printed circuit board PCBA and the electronic paper display screen together, and solder the battery to the PCBA to form an electrical assembly;

[0009] Placing the middle frame on the first polyethylene terephthalate plastic PET film, the middle frame and the first PET film form a first accommodation space, and injecting epoxy resin glue into the first accommodation space to form a first epoxy resin glue sealing layer;

[0010] Fixing one side of the battery of the electrical component on the first epoxy resin glue sealing layer, after the lamination is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space, and injecting epoxy resin glue into the second accommodation space to form a second epoxy resin glue sealing layer;

[0011] After placing a second PET film on the side of the second epoxy resin glue sealing layer facing away from the electrical components, lamination and curing are performed to form an electronic shelf label; after the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

[0012] The embodiment of the present invention further provides an electronic shelf label, which is used to provide an electronic shelf label with a long service life, a thin thickness and easy to realize automated production. The electronic shelf label includes:

[0013] First PET film;

[0014] The middle frame is placed on the first PET film to form a first accommodation space with the first PET film, and the epoxy resin glue is injected into the first accommodation space to form a first epoxy resin glue sealing layer;

[0015] The electrical component, one side of the battery of the electrical component is fixedly attached to the first epoxy resin glue sealing layer, after the attachment is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space, and the epoxy resin glue is injected into the second accommodation space to form a second epoxy resin glue sealing layer; wherein the electrical component includes: PCBA, the electronic paper display screen assembled with the PCBA, and the battery welded to the PCBA;

[0016] The second PET film is placed on the side of the second epoxy resin glue sealing layer facing away from the electrical components for pressing and curing; after the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

[0017] Compared with the electronic shelf label solution in the prior art, the technical solution provided by the embodiment of the present invention achieves the following beneficial technical effects:

[0018] 1. After the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured in the embodiment of the present invention, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame, including the electrical components of the electronic paper display screen are fully coated with the epoxy resin glue and fully isolated from external water vapor. The equivalent service life of the screen is extended from 5 years to 10 years through accelerated aging tests.

[0019] 2. The embodiment of the present invention uses a thin PET film instead of a thick protective lens, and the thickness of the whole device is reduced by about 60% compared with the traditional design, and the overall experience is closer to the effect of paper electronic shelf labels.

[0020] 3. The technical solution provided by the embodiment of the present invention can realize fully automatic production, avoid the inconsistency caused by manual operation, and reduce labor costs.

[0021] In addition, epoxy resin glue is used for potting to increase the strength of the whole machine and further extend the service life of the electronic shelf label.

[0022] In summary, the electronic shelf label provided by the embodiment of the present invention has a long service life, a thin thickness and is easy to realize automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of an electronic shelf label in the prior art;

[0025] Figure 2 is a schematic flow chart of a method for manufacturing an electronic shelf label in an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the principle of manufacturing an electronic shelf label in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the entire middle frame panel in an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of an electronic shelf label in an embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the entire electronic shelf label in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Before introducing the embodiments of the present invention, the nouns and full names involved in the embodiments of the present invention are first introduced.

[0032] 1. ESL: Electronic Shelf Label.

[0033] 2. MCU: Micro Controller Unit.

[0034] 3. RF: Radio Frequency.

[0035] 4. EPD: Electronic Paper Displays.

[0036] 5. SiP: System in Package.

[0037] 6. SoC: System on Chip, chip level system.

[0038] 7. PCB: Printed Circuit Board.

[0039] 8. PCBA: Printed Circuit Board Assembly, assembled printed circuit board.

[0040] 9. NFC: Near Field Communication.

[0041] 10. ACF: Anisotropic Conductive Film.

[0042] 11. CNC: Computerized Numerical Control, CNC machine tools.

[0043] The inventors found that the technical problems of the existing electronic shelf label solutions are:

[0044] 1. The protective lens and the shell are fixed by ultrasonic welding, hot melt adhesive bonding or snap fastening, which cannot completely isolate water molecules from invading the interior of the product. The electronic paper widely used in electronic shelf labels is sensitive to water vapor. The main reason for its failure is that after long-term use, water molecules invade from the edge sealing, causing the electronic paper characteristics to change, resulting in failure to display normally.

[0045] 2. The existing design uses conventional technology, and the whole product is heavy, which is very different from traditional paper labels, creating obstacles to the comprehensive use of electronic shelf labels.

[0046] 3. The assembly of shelf label products involves many manual steps and cannot be fully automated.

[0047] Therefore, the inventors have considered the above technical problems and proposed an electronic shelf label and a manufacturing solution thereof, which solves the following problems:

[0048] 1. Isolate the main components of the electronic paper display screen, circuit board, battery, etc. from the external environment to prevent the invasion of water molecules and solve the problem of electronic paper screen failure due to water vapor.

[0049] 2. Solve the problem of the weight of the whole product, and the whole machine is closer to the use of paper labels, which is conducive to the large-scale promotion of electronic shelf labels.

[0050] 3. Solve the problem of fully automatic production of electronic shelf label products and reduce manual processes.

[0051] The electronic shelf label solution is introduced in detail below.

[0052] Figure 2 FIG. 1 is a flow chart of a method for manufacturing an electronic shelf label according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0053] Step 101: Assemble the assembled printed circuit board PCBA and the electronic paper display screen together, and solder the battery to the PCBA to form an electrical assembly;

[0054] Step 102: placing the middle frame on the first polyethylene terephthalate plastic PET film, the middle frame and the first PET film forming a first accommodation space, injecting epoxy resin glue into the first accommodation space to form a first epoxy resin glue sealing layer;

[0055] Step 103: fix one side of the electrical component battery on the first epoxy resin glue sealing layer. After the bonding is completed, the middle frame and one side of the electrical component electronic paper display screen form a second accommodation space, and inject epoxy resin glue into the second accommodation space to form a second epoxy resin glue sealing layer.

[0056] Step 104: After placing a second PET film on the side of the second epoxy resin glue sealing layer facing away from the electrical components, lamination and curing are performed to form an electronic shelf label; after the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

[0057] In one embodiment, the method for manufacturing an electronic shelf label may further include:

[0058] Prepare a first PET film whole plate, a middle frame whole plate, a battery pack, a PCBA group, an electronic paper display screen group, and a second PET film whole plate; wherein: the first PET film whole plate includes a plurality of first PET films for preparing electronic shelf labels, the middle frame whole plate includes a plurality of middle frames for preparing electronic shelf labels, the battery pack includes a plurality of batteries for preparing electronic shelf labels, the PCBA group includes a plurality of PCBAs for preparing electronic shelf labels, the electronic paper display screen group includes a plurality of electronic paper display screens for preparing electronic shelf labels, and the second PET film whole plate includes a plurality of second PET films for preparing electronic shelf labels; each first PET film has a middle frame, a battery, a PCBA, an electronic paper display screen, and a second PET film corresponding to its position;

[0059] According to the method described in steps 101 to 104 above, operations are performed on each first PET film and the middle frame, battery, PCBA, electronic paper display screen and second PET film corresponding to the first PET film to obtain a complete electronic shelf label plate;

[0060] The whole electronic shelf label plate is CNC milled into multiple single electronic shelf labels.

[0061] In specific implementation, the above solution of obtaining a whole electronic shelf label plate and then milling out multiple single electronic shelf labels through a CNC machine tool further makes it easy to realize automated production of electronic shelf labels, thereby improving the manufacturing efficiency of electronic shelf labels.

[0062] In order to facilitate understanding of how the present invention is implemented, the following Figures 2 to 6 , the implementation process of the present invention is introduced in detail.

[0063] 1.PET preparation:

[0064] In one embodiment, the first PET film whole plate 10 and the second PET film whole plate 60 may be prepared as follows:

[0065] Complete the silk screen printing process of the first PET film whole plate and the second PET film whole plate respectively;

[0066] After the screen printing process is completed, the first PET film whole plate is punched with positioning holes and the second PET film whole plate is punched with positioning holes; the positioning holes are used for positioning during the lamination process.

[0067] In the specific implementation, the first PET film (PET rear film) whole plate and the second PET film (PET front film) whole plate are respectively screen printed, and then punched (positioning holes) for positioning during lamination to improve the quality and manufacturing efficiency of the electronic shelf label. The following steps will also punch positioning holes on the middle frame whole plate, and the positioning holes 21 on the middle frame whole plate correspond to the positions of the positioning holes on the first PET film whole plate and the second PET film whole plate.

[0068] 2. Middle frame preparation: In one embodiment, the whole middle frame board can be prepared as follows:

[0069] A glue overflow half hole 22 for connecting the first accommodation space and the second accommodation space is provided on each middle frame of the middle frame whole plate;

[0070] An overflow glue groove is provided on the entire middle frame plate to accommodate excess epoxy resin glue during the lamination process.

[0071] In the specific implementation, according to the stacking shape of the whole machine, the PC sheet is used to CNC process the whole middle frame (middle frame whole board). The schematic diagram of the middle frame whole board is shown in Figure 4 shown. Figure 4 The overflow glue half hole 22 allows the epoxy resin glue to flow between the PET front film and the PET back film, making it easier to form a complete potting colloid for isolating external moisture. The potting colloid more fully covers the electrical components including the electronic paper display screen, fully isolating it from external moisture, and further extending the service life of the electronic shelf label. In addition, a horizontal overflow glue groove 23 and a vertical overflow glue groove 24 are reserved on the entire middle frame. During the lamination process, excess glue will flow into the overflow glue groove, so that the glue can fully fill the entire middle frame and the gap between the middle frame and the front and rear PET films.

[0072] In one embodiment, a half-hole for glue overflow is provided on each middle frame of the middle frame whole plate for connecting the first accommodation space and the second accommodation space, including: a half-hole for glue overflow is provided on the inner edge of each middle frame of the middle frame whole plate for connecting the first accommodation space and the second accommodation space.

[0073] When implementing it, Figure 4 As shown, a half hole for overflowing glue is provided on the inner edge of each middle frame, which is convenient for implementation and more conducive to the flow of glue between the PET front film and the PET rear film. There can be multiple half holes for overflowing glue.

[0074] In one embodiment, a glue overflow groove for accommodating excess epoxy resin glue during the lamination process is provided on the entire middle frame plate, including: a transverse glue overflow groove and a longitudinal glue overflow groove for accommodating excess epoxy resin glue during the lamination process are provided on the entire middle frame plate; wherein, the transverse glue overflow groove is provided perpendicular to the lamination direction, and the longitudinal glue overflow groove is provided parallel to the lamination direction.

[0075] When implementing it, Figure 4 As shown in the figure, the design of the horizontal and vertical overflow glue grooves is more convenient to accommodate the excess epoxy resin glue during the lamination process, ensuring the beauty of the electronic shelf label. There can be multiple horizontal overflow glue grooves, which can be set on the horizontal edge of the whole middle frame board or between every two rows of middle frames. There can be multiple vertical overflow glue grooves, which can be set on the side of the whole middle frame board or between every two columns of middle frames.

[0076] 3. Electrical component preparation, i.e. step 101 above:

[0077] In one embodiment, assembling the assembled printed circuit board PCBA and the electronic paper display screen together may include: assembling the PCBA and the electronic paper display screen together by pressing and assembling them together through ACF.

[0078] In specific implementation, the related components of the electronic shelf label are welded to the PCB board to form a PCBA, the PCBA and the electronic paper display screen are crimped together through ACF, and then the battery is welded to complete the preparation of the electrical components. The PCBA and the electronic paper display screen are crimped and connected through the ACF process, which ensures the firmness of the electronic shelf label and further extends the service life of the electronic shelf label.

[0079] 4.PET pretreatment:

[0080] In one embodiment, the manufacturing method of the electronic shelf label may further include: pre-treating the first PET film and the second PET film.

[0081] In specific implementation, the PET pretreatment completes the cleaning of the PET film, so that the PET is more firmly bonded to the glue and the middle frame.

[0082] 5. Gluing, i.e., the above step 102: placing the middle frame on the first polyethylene terephthalate plastic PET film, the middle frame and the first PET film forming a first accommodation space (the first accommodation space can be a very small gap, in Figure 5 and Figure 6 Epoxy resin glue is injected into the first accommodation space to form a first epoxy resin glue sealing layer. Specifically, the PET rear film and the middle frame are placed on the working platform in sequence, the two parts are positioned through the positioning holes, and then epoxy resin glue is applied.

[0083] 6. Electrical component assembly, i.e., the above step 103: placing the electrical component into the middle frame of the above “5”, i.e., fixing one side of the battery of the electrical component on the first epoxy resin glue sealing layer.

[0084] 7. Gluing: After the bonding is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space (the second accommodation space can be a very small gap, Figure 5 and Figure 6 not marked in the figure).

[0085] During specific implementation, glue is continued to be poured on the electrical component, and then the PET front film is placed, that is, a second PET film is placed on the side of the second epoxy resin glue sealing layer facing away from the electrical component (a second PET film is placed on the side of the second epoxy resin glue sealing layer facing away from the electrical component), and the front film is precisely aligned with the middle frame and the rear film through the same positioning columns.

[0086] 8. Rolling: After the front film is assembled in place, it is rolled to allow excess glue and bubbles to enter the glue overflow groove designed in the middle frame.

[0087] 9. Flat pressing: The components that have been rolled enter the flat pressing process. The middle frame and the front and rear PET films are more tightly combined during flat pressing, and the glue begins to solidify.

[0088] 10. Lamination and curing: After flattening, multiple product panels (full panels of electronic shelf labels) are stacked and placed, and fully cured at room temperature.

[0089] According to the introduction of "8-10" above, in one embodiment, the lamination process can be performed according to the following method:

[0090] After the second PET film is in place, a rolling operation is performed;

[0091] After the rolling operation, the flat pressing operation is performed;

[0092] After the flat pressing operation, the lamination operation is performed.

[0093] In specific implementation, the electronic shelf labels provided by the above-mentioned lamination treatment method are of high quality and firmness, and the service life is further extended.

[0094] 11. Whole machine CNC: After the glue is completely cured, each single electronic shelf label product in the component is milled out by CNC to complete the whole machine preparation.

[0095] In summary, the technical solution provided in this embodiment provides the following method:

[0096] 1. A method for realizing electronic shelf labels by lamination at room temperature.

[0097] 2. Use glue to isolate the screen from external environmental moisture to increase the service life of the screen.

[0098] 3. The middle frame is designed with half holes for overflow glue and horizontal / vertical overflow glue grooves.

[0099] 4. A method for improving the structural strength of the entire electronic shelf label by epoxy resin glue potting and pressing.

[0100] Based on the same inventive concept, an electronic shelf label is also provided in the embodiment of the present invention, as described in the following embodiment. Since the principle of solving the problem by the electronic shelf label is similar to the manufacturing method of the electronic shelf label, the implementation of the electronic shelf label can refer to the implementation of the manufacturing method of the electronic shelf label, and the repeated parts will not be repeated.

[0101] Figure 5 is a schematic diagram of the structure of an electronic shelf label according to an embodiment of the present invention. Figure 5 As shown, the electronic shelf label includes:

[0102] First PET film 1;

[0103] The middle frame 2 is placed on the first PET film to form a first accommodation space with the first PET film, and the epoxy resin glue is injected into the first accommodation space to form a first epoxy resin glue sealing layer;

[0104] The electrical component, one side of the battery of the electrical component is fixedly attached to the first epoxy resin glue sealing layer. After the attachment is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space, and the epoxy resin glue is injected into the second accommodation space to form a second epoxy resin glue sealing layer; wherein the electrical component includes: PCBA 4, the electronic paper display screen 5 assembled with the PCBA, and the battery 3 welded to the PCBA;

[0105] The second PET film 6 is placed on the side of the second epoxy resin glue sealing layer facing away from the electrical components for pressing and curing. After the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

[0106] In one embodiment, the electronic shelf label is milled out from an electronic shelf label whole plate by a CNC machine tool; the electronic shelf label whole plate includes: a first PET film whole plate 10, a middle frame whole plate 20, a battery pack 30, a PCBA group 40, an electronic paper display screen group 50, and a second PET film whole plate 60; wherein: the first PET film whole plate includes a plurality of first PET films, the middle frame whole plate includes a plurality of middle frames, the battery pack includes a plurality of batteries 3, the PCBA group includes a plurality of PCBAs, the electronic paper display screen group includes a plurality of electronic paper display screens, and the second PET film whole plate includes a plurality of second PET films; each first PET film has a middle frame, a battery, a PCBA, an electronic paper display screen and a second PET film corresponding to its position.

[0107] In one embodiment, the middle frame whole plate may include: a plurality of positioning holes 21 for positioning during the pressing process.

[0108] In one embodiment, each middle frame of the middle frame whole plate is provided with a glue overflow half hole 22 for connecting the first accommodation space and the second accommodation space.

[0109] In one embodiment, the glue overflow half hole is arranged on the inner edge of each middle frame.

[0110] In one embodiment, a glue overflow groove for accommodating excess epoxy resin glue during the lamination process is provided on the entire middle frame plate.

[0111] In one embodiment, the glue overflow groove includes a transverse glue overflow groove 23 and a longitudinal glue overflow groove 24; wherein the transverse glue overflow groove is arranged perpendicular to the pressing direction, and the longitudinal glue overflow groove is arranged parallel to the pressing direction.

[0112] The beneficial technical effects of the technical solution provided by the embodiment of the present invention are:

[0113] 1. The electrical components including the electronic paper display screen are fully covered with glue and fully isolated from external moisture. Through accelerated aging tests, the equivalent life of the screen is extended from 5 years to 10 years.

[0114] 2. Use potting glue epoxy resin to increase the strength of the whole machine, and use thin PET film instead of thick protective lenses. The thickness of the whole machine is reduced by about 50% compared with the traditional design, and the overall experience is closer to the effect of paper price tags.

[0115] 3. It can realize fully automatic production, avoid the inconsistency caused by manual operation, and reduce labor costs.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for manufacturing an electronic shelf label, characterized in that: include: Assemble the assembled printed circuit board PCBA and the electronic paper display screen together, and solder the battery to the PCBA to form an electrical assembly; The middle frame is placed on the first polyethylene terephthalate plastic PET film, the middle frame and the first PET film form a first accommodation space, and the first PET film and the middle frame are positioned through the positioning holes, and then epoxy resin glue is injected into the first accommodation space to form a first epoxy resin glue sealing layer; Fixing one side of the battery of the electrical component on the first epoxy resin glue sealing layer, after the lamination is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space, and injecting epoxy resin glue into the second accommodation space to form a second epoxy resin glue sealing layer; After placing a second PET film on the side of the second epoxy resin glue sealing layer facing away from the electrical components, lamination and curing are performed to form an electronic shelf label; after the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

2. The method for manufacturing an electronic shelf label according to claim 1, wherein: Also includes: Prepare a first PET film whole plate, a middle frame whole plate, a battery pack, a PCBA group, an electronic paper display screen group, and a second PET film whole plate; wherein: the first PET film whole plate includes a plurality of first PET films, the middle frame whole plate includes a plurality of middle frames, the battery pack includes a plurality of batteries, the PCBA group includes a plurality of PCBAs, the electronic paper display screen group includes a plurality of electronic paper display screens, and the second PET film whole plate includes a plurality of second PET films; each first PET film has a middle frame, a battery, a PCBA, an electronic paper display screen, and a second PET film corresponding to its position; According to the method of claim 1, each first PET film and the middle frame, battery, PCBA, electronic paper display screen and second PET film corresponding to the first PET film are operated to obtain a whole electronic shelf label plate; The whole electronic shelf label plate is CNC milled into multiple single electronic shelf labels.

3. The method for manufacturing an electronic shelf label according to claim 2, wherein: Prepare the first PET film whole plate and the second PET film whole plate as follows: Complete the silk screen printing process of the first PET film whole plate and the second PET film whole plate respectively; After the screen printing process is completed, the first PET film whole plate and the second PET film whole plate are punched with positioning holes; the positioning holes are used for positioning during the lamination process.

4. The method for manufacturing an electronic shelf label according to claim 2, wherein: Prepare the middle frame as follows: A glue overflow half hole for connecting the first accommodation space and the second accommodation space is provided on each middle frame of the middle frame whole plate; An overflow glue groove is provided on the entire middle frame plate to accommodate excess epoxy resin glue during the lamination process.

5. The method for manufacturing an electronic shelf label according to claim 1, wherein: Carry out the pressing process as follows: After the second PET film is in place, a rolling operation is performed; After the rolling operation, the flat pressing operation is performed; After the flat pressing operation, the lamination operation is performed.

6. The method for manufacturing an electronic shelf label according to claim 1, wherein: Assembling the assembled printed circuit board PCBA and the electronic paper display screen together, including: assembling the PCBA and the electronic paper display screen together through ACF pressing.

7. The method for manufacturing an electronic shelf label according to claim 1, wherein: Also includes: Pretreatment operation for the first PET film and the second PET film.

8. An electronic shelf label, characterized in that: include: First PET film; The middle frame is placed on the first PET film to form a first accommodation space with the first PET film, and the first PET film and the middle frame are positioned through the positioning holes and then epoxy resin glue is injected into the first accommodation space to form a first epoxy resin glue sealing layer; The electrical component, one side of the battery of the electrical component is fixedly attached to the first epoxy resin glue sealing layer, after the attachment is completed, the middle frame and one side of the electronic paper display screen of the electrical component form a second accommodation space, and the epoxy resin glue is injected into the second accommodation space to form a second epoxy resin glue sealing layer; wherein the electrical component includes: PCBA, the electronic paper display screen assembled with the PCBA, and the battery welded to the PCBA; The second PET film is placed on the side of the second epoxy resin glue sealing layer facing away from the electrical components for pressing and curing; after the first epoxy resin glue sealing layer and the second epoxy resin glue sealing layer are cured, a complete potting colloid for isolating external water vapor is formed between the first PET film, the second PET film and the middle frame.

9. The electronic shelf label according to claim 8, characterized in that: The electronic shelf label is milled out from the electronic shelf label whole plate by a CNC machine tool; the electronic shelf label whole plate includes: a first PET film whole plate, a middle frame whole plate, a battery pack, a PCBA group, an electronic paper display screen group, and a second PET film whole plate; wherein: the first PET film whole plate includes a plurality of first PET films, the middle frame whole plate includes a plurality of middle frames, the battery pack includes a plurality of batteries, the PCBA group includes a plurality of PCBAs, the electronic paper display screen group includes a plurality of electronic paper display screens, and the second PET film whole plate includes a plurality of second PET films; each first PET film has a middle frame, a battery, a PCBA, an electronic paper display screen, and a second PET film corresponding to its position.

10. The electronic shelf label according to claim 9, wherein: The middle frame whole plate includes: a plurality of positioning holes for positioning during the pressing process.

11. The electronic shelf label according to claim 9, wherein: Each middle frame of the middle frame whole plate is provided with a glue overflow half hole for connecting the first accommodating space and the second accommodating space.

12. The electronic shelf label according to claim 11, wherein: The overflow glue half hole is arranged on the inner edge of each middle frame.

13. The electronic shelf label according to claim 9, wherein: The entire middle frame plate is provided with an overflow groove for accommodating excess epoxy resin glue during the pressing process.

14. The electronic shelf label according to claim 13, wherein: The glue overflow groove includes a transverse glue overflow groove and a longitudinal glue overflow groove; wherein the transverse glue overflow groove is arranged perpendicular to the pressing direction, and the longitudinal glue overflow groove is arranged parallel to the pressing direction.

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