Electronic paper segment code display module and production method

Abstract

The invention discloses an electronic paper segment code display module and a production method. The electronic paper segment code display module comprises a PET layer, an FPL electronic paper layer, a PS protection layer and flexible edge sealing glue. The FPL electronic paper layer and the PET layer are electrically communicated with an internal circuit through elargol; the FPL electronic paper layer is arranged on the PET layer; the PS protective layer is arranged on the FPL electronic paper layer; the flexible edge sealing adhesive surrounds a gap between the FPL electronic paper layer and the PS protection layer to prevent water vapor from entering the FPL electronic paper layer; and the FPL electronic paper layer comprises a segment code display part. Comprising the following steps: A10, dispensing silver colloid on circuit connection points on an FPL electronic paper layer; a20, the FPL electronic paper layer is attached to the PET layer; a30, the PS protection layer is attached to the FPL electronic paper layer; a40, flexible edge sealing glue is smeared in the gap between the FPL electronic paper layer and the PS protection layer; and A50, curing the flexible edge sealing glue.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of display device manufacturing, and specifically relates to an electronic paper module display device and a production method. BACKGROUND

[0002] The electronic paper module, also known as electronic ink screen, has excellent characteristics such as ultra-low power consumption, continuous display without power consumption, eye protection, etc., and has the same display effect and visual experience as paper. A plurality of mixed electronic particles are placed in the same ink capsule, and under the action of current, a plurality of ink capsules are arranged and combined to form "electronic ink". Under the influence of positive and negative charges, these tiny ink capsules operate like a liquid to form various characters and patterns. The core features are low power consumption and visual health.

[0003] The core material of the online module of the electronic paper module is the electronic ink film (FPL), and the water content of the electronic ink film needs to be maintained stable. Changes in water content will directly affect the display effect of the electronic paper module. Therefore, a material is needed to seal the electronic ink film around to prevent water vapor from entering or flowing out of the electronic ink microcapsule.

[0004] Currently, in the production and manufacturing process of flexible electronic paper segment code display modules, the product structure is hot melt film + PET + FPL + hot melt film. Because the waterproof effect of the hot melt film is not good, the electronic paper will enter water after RA, and the waterproof ability of the product needs to be solved while ensuring the softness of the product, so as to ensure the reliability of the product.

[0005] Glossary:

[0006] BARRIER generally refers to a barrier layer, which is a key protective structure mainly used to isolate moisture, oxygen or other environmental factors from eroding the electronic ink microcapsule, thereby improving the durability and stability of the display device.

[0007] EPD is the abbreviation of English "electronic paper display", which means electronic paper module mother sheet display. The meaning of the electronic paper module mother sheet in the present application is electronic paper module mother sheet display.

[0008] PET is the abbreviation of English "Polyethylene terephthalate", which means polyester resin film layer.

[0009] IC is the abbreviation of English "Integrated Circuit", which means chip.

[0010] FPC is the abbreviation of English "Flexible Printed Circuit", which means flexible circuit board.

[0011] PS is the abbreviation of "Polystyrene", which means polystyrene film in Chinese.

[0012] FPL is the abbreviation of "Front Plane Lamination", which means front plane laminated display module in Chinese. SUMMARY

[0013] The technical problem to be solved by the present application is to avoid the poor waterproof effect of the heat capacity film+PET+FPL+heat capacity film structure of the flexible electronic paper segment code display module in the prior art. The present application provides a flexible electronic paper segment code display module, which realizes the structure of the flexible electronic paper segment code display module through the cooperation of the PS protective layer and the flexible edge sealing glue, and can maintain flexibility and ensure waterproof performance.

[0014] The technical solution of the present application to solve the above technical problem is an electronic paper segment code display module, comprising: a PET layer, an FPL electronic paper layer, a PS protective layer, and a flexible edge sealing glue; the FPL electronic paper layer and the PET layer are electrically connected to the internal circuit through silver glue; the FPL electronic paper layer is on the PET layer; the PS protective layer is on the FPL electronic paper layer; the flexible edge sealing glue surrounds the gap between the FPL electronic paper layer and the PS protective layer to prevent water vapor from entering the FPL electronic paper layer; and the FPL electronic paper layer comprises a segment code display part.

[0015] The PET layer comprises a gold finger, the gold finger is connected to the segment code part through internal wires of the PET layer, and the driving electrode of the segment code part is in electrical signal communication with the internal wires through silver glue.

[0016] The flexible edge sealing glue is epoxy resin glue.

[0017] The PET layer comprises a BARRIER layer, the BARRIER layer is composed of aluminum oxide or silicon oxide material, and the thickness range is 40nm-80nm.

[0018] The PS protective layer comprises a BARRIER layer, the BARRIER layer is composed of aluminum oxide or silicon oxide material, and the thickness range of the BARRIER layer is 40nm-80nm.

[0019] The thickness range of the PET layer substrate is 0.05mm-0.2mm.

[0020] The thickness range of the PS protective layer is 0.05mm-0.25mm.

[0021] The technical scheme of the present application for solving the above technical problem can also be a production method of an electronic paper segment code display module, comprising the following steps: A10: applying silver glue on the circuit connection point on the FPL electronic paper layer; A20: bonding the FPL electronic paper layer with the PET layer; A30: bonding the PS protective layer on the FPL electronic paper layer; A40: applying flexible edge sealing glue between the gap between the FPL electronic paper layer and the PS protective layer; and A50: curing the flexible edge sealing glue.

[0022] The flexible edge sealing glue is flexible edge sealing glue; and the PS protective layer is plated with a BARRIER waterproof layer before bonding.

[0023] The PET layer in step A20 is plated with a BARRIER waterproof layer before bonding; and a pattern layer is further arranged on the BARRIER waterproof layer.

[0024] One of the beneficial effects of the technical scheme in the present application is that the PS protective layer and the flexible edge sealing glue are combined to form an electronic paper segment code display module with flexible characteristics, and also have waterproof performance.

[0025] One of the beneficial effects of the technical scheme in the present application is that the PET layer includes a golden finger, which facilitates electrical connection with the outside.

[0026] One of the beneficial effects of the technical scheme in the present application is that the PET layer includes a BARRIER layer, so that the PET layer also has waterproof performance, further improving the overall waterproof performance of the electronic paper segment code display module.

[0027] One of the beneficial effects of the technical scheme in the present application is that the PS protective layer also includes a BARRIER layer, further improving the overall waterproof performance of the module.

[0028] One of the beneficial effects of the technical scheme in the present application is that the thickness range of the PET layer substrate ensures the flexible bending performance.

[0029] One of the beneficial effects of the technical scheme in the present application is that the thickness range of the PS protective layer substrate further ensures the flexible bending performance.

[0030] One of the beneficial effects of the technical scheme in the present application is that the process method is simple and efficient.

[0031] One of the beneficial effects of the technical scheme in the present application is that the BARRIER waterproof layer is further provided with a pattern layer, enriching the product structure. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a combination schematic diagram of an electronic paper segment code display module;

[0033] Figure 2is an exploded schematic view of an electronic paper segment code display module;

[0034] Figure 3 is a sectional view of an electronic paper segment code display module Figure 1 ;

[0035] Figure 4 is a sectional view of an electronic paper segment code display module Figure 2 ;

[0036] Figure 5 is a sectional view of an electronic paper segment code display module Figure 3 ;

[0037] Figure 6 is a sectional view of an electronic paper segment code display module in the prior art. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0039] It should be noted that the following description is merely of the preferred embodiments of the present application and does not impose any limitation on the present application. The description of the preferred embodiments of the present application is merely illustrative of the general principles of the present application. The embodiments described in the present application are only a part of the embodiments of the present application and are not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and technical features numbered with Arabic numerals 1, 2, 3, etc., and "A" and "B" such numbering, are only for the purpose of description, and are only for the convenience of explanation, and do not represent the temporal or spatial sequence relationship; cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", and technical features numbered with Arabic numerals 1, 2, 3, etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly specified.

[0041] As Figure 6In the prior art, the flexible segment code electronic paper product structure includes hot melt film+PET+FPL+hot melt film. Because the waterproof effect of the hot melt film is not good, the electronic paper will be waterlogged after being thrown into RA. The waterproof capability of the product needs to be solved while ensuring the softness of the product, so as to ensure the reliability of the product.

[0042] As Figures 1 to 3 An electronic paper segment code display module, comprising: a PET layer 100, an FPL electronic paper layer 200, a PS protective layer 300, and a flexible edge sealing glue 500; the FPL electronic paper layer 200 and the PET layer 100 are electrically connected to the internal circuit through silver glue; the FPL electronic paper layer 200 is on the PET layer 100; the PS protective layer 300 is on the FPL electronic paper layer 200; the flexible edge sealing glue 500 surrounds the gap between the FPL electronic paper layer 200 and the PS protective layer 300 to prevent water vapor from entering the FPL electronic paper layer 200; the FPL electronic paper layer 200 comprises a segment code display part 280.

[0043] As Figures 1 to 3 The PET layer 100 comprises a gold finger 180, which is connected to the segment code part 280 through internal wires of the PET layer 100. The driving electrode of the segment code part 280 is in electrical signal communication with the internal wires through silver glue.

[0044] The flexible edge sealing glue is epoxy resin glue.

[0045] As Figure 4 The PET layer 100 comprises a BARRIER layer 110, which is composed of aluminum oxide or silicon oxide material and has a thickness ranging from 40 nm to 80 nm.

[0046] As Figure 4 The PS protective layer 300 comprises a BARRIER layer 310, which is composed of aluminum oxide or silicon oxide material and has a thickness ranging from 40 nm to 80 nm.

[0047] The thickness of the PET layer substrate ranges from 0.05 mm to 0.2 mm, and can also be 0.075 mm, 0.1 mm, or 0.15 mm.

[0048] The thickness of the PS protective layer substrate ranges from 0.05 mm to 0.25 mm, and can also be 0.075 mm, 0.1 mm, 0.15 mm, or 0.25 mm.

[0049] The thickness of the FPL electronic paper layer ranges from 0.1 mm to 0.19 mm, and can also be 0.18 mm.

[0050] In an embodiment of the production method of the electronic paper segment code display module, the following steps are included: A10: applying silver glue on the circuit connection points on the FPL electronic paper layer 200; A20: bonding the FPL electronic paper layer 200 with the PET layer 100; A30: bonding the PS protective layer 300 on the FPL electronic paper layer 200; A40: applying flexible sealing adhesive 500 between the gap between the FPL electronic paper layer 200 and the PS protective layer 300; and A50: curing the flexible sealing adhesive.

[0051] The sealing adhesive is flexible sealing adhesive; and the PS protective layer 300 is plated with a BARRIER waterproof layer 310 before bonding.

[0052] As Figure 5 , the PET layer 100 in step A20 is plated with a BARRIER waterproof layer 110 before bonding; and a pattern layer 120 is further provided on the BARRIER waterproof layer 110 after plating.

[0053] In the present application, the PS protective layer 300 is plated with a BARRIER waterproof layer 310 to improve the waterproof capability of the product, so that the PET layer has waterproof function, and the PET (with waterproof function) + FPL + PS is provided with flexible waterproof glue on the periphery of the electronic paper to ensure the waterproof performance of the product; meanwhile, the flexible sealing adhesive can ensure the softness of the product.

[0054] In the present application, the BARRIER waterproof layer on the PET layer can be a PS film layer; meanwhile, the upper PS film also has a waterproof BARRIER layer, the FPL is bonded on the lower substrate, the PS film is bonded on the upper surface, the thickness of the PET layer and the PS film substrate is made as thin as possible, the flexible waterproof glue is applied on the edge, and the BARRIER waterproof layer on the PS film and the flexible waterproof glue on the edge are used to ensure that the water vapor cannot enter the electronic paper.

[0055] In the process implementation, a BARRIER waterproof layer is first plated on the PET layer and cured. The pattern printing is performed on the BARRIER layer to obtain the desired pattern. The FPL with the applied silver glue is bonded on the PET layer; the waterproof PS film is bonded on the FPL. The flexible waterproof glue is applied on the periphery. The baking and curing are completed to finish the production.

[0056] BARRIER's waterproof PS film (polystyrene film) is based on a core technology that improves water resistance through surface modification or composite processes while retaining the high transparency and easy processing characteristics of the PS material. The surface is coated with a waterproof film. The PS film surface is covered with a fluoride waterproof layer through a vacuum coating process to form a hydrophobic surface (contact angle ≈ 110°), reducing the adhesion of water / oil stains while maintaining high light transmittance (transmittance > 90%). This process requires precise control of the coating thickness (approximately 0.005–0.01mm) to avoid affecting optical properties.

[0057] In the field of waterproofing, "barrier" refers specifically to a protective layer formed on or within a material through physical or chemical means to block the penetration of media such as water, water vapor, and pollutants. For this application, the waterproof rating for outdoor equipment is ≥10kPa (IPX7).

[0058] As shown in the accompanying drawings, the above are only embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the invention description and the accompanying drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electronic paper segment code display module, characterized in that: include: PET layer, FPL electronic paper layer, PS protective layer, flexible edge sealing adhesive; The FPL electronic paper layer and the PET layer are electrically connected to the internal circuit via silver glue; The FPL electronic paper layer is on top of the PET layer; The PS protective layer is on top of the FPL electronic paper layer; Flexible edge sealing glue surrounds the gap between the FPL electronic paper layer and the PS protective layer to prevent moisture from entering the FPL electronic paper layer; The FPL electronic paper layer includes a segment code display area.

2. The electronic paper segment code display module according to claim 1, characterized in that: The PET layer includes a gold finger, which is connected to the segment code part through an internal wire of the PET layer, and the driving electrode of the segment code part is connected to the internal wire through silver glue for electrical signal communication.

3. The electronic paper segment code display module according to claim 1, wherein: The flexible edge sealing adhesive is epoxy resin adhesive.

4. The electronic paper segment code display module according to claim 1, characterized in that: The PET layer includes a BARRIER layer, which is made of aluminum oxide or silicon oxide and has a thickness ranging from 40 nm to 80 nm.

5. The electronic paper segment code display module according to claim 1, wherein: The PS protective layer includes a BARRIER layer, which is made of aluminum oxide or silicon oxide. The thickness of the BARRIER layer is in the range of 40 nm to 80 nm.

6. The electronic paper segment code display module according to claim 1, characterized in that: The thickness of the PET layer substrate ranges from 0.05 mm to 0.2 mm.

7. The electronic paper segment code display module according to claim 1, characterized in that: The thickness of the PS protective layer is in the range of 0.05 mm to 0.25 mm.

8. A method for producing an electronic paper segment code display module, characterized in that: The following steps are included: A10: Apply silver glue to the circuit connection points on the FPL electronic paper layer; A20: Laminating the FPL electronic paper layer to the PET layer; A30: Laminating the PS protective layer to the FPL electronic paper layer; A40: Apply flexible edge sealing glue between the FPL electronic paper layer and the PS protective layer; A50: Flexible edge banding adhesive curing.

9. The method for producing an electronic paper segment code display module according to claim 6, wherein: The flexible edge sealing adhesive is a flexible edge sealing adhesive; Before lamination, the PS protective layer is plated with a BARRIER waterproof layer.

10. The method for producing an electronic paper segment code display module according to claim 6, wherein: The PET layer in step A20 is coated with a BARRIER waterproof layer before lamination; a pattern layer is also provided on the BARRIER waterproof layer.

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