Electronic paper

Abstract

The utility model provides electronic paper and relates to the technical field of electrophoretic display. The electronic paper comprises a driving substrate, a display assembly, a water blocking mechanism and edge sealing glue. The display assembly is arranged on the upper end face of the driving substrate and comprises an ink particle layer; the water blocking mechanism comprises an anti-dazzle assembly and a water blocking assembly, the water blocking assembly is arranged between the anti-dazzle assembly and the ink particle layer, and a water blocking layer in the water blocking assembly can be bonded to the ink particle layer; the edge sealing glue and the peripheral wall of the display assembly are correspondingly coated on the driving substrate. According to the electronic paper, the barrier effect on water vapor and oxygen can be improved, and the influence of the coating effect of the edge sealing adhesive on the ink particle layer is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrophoretic display technical field, especially a kind of electronic paper. BACKGROUND

[0002] Electronic paper (Electronic Paper, E-Paper for short) is an electronic display technology that simulates the display effect of traditional paper. It is widely used due to its ability to maintain display content without power and its visual experience close to paper reading.

[0003] If the ink film of the display layer in the electronic paper is in contact with water vapor and oxygen, it is easy to cause the ink particles of the film to fail and display abnormally, and it will increase the production material cost and labor cost. In order to avoid the above situation, the existing electronic paper will set a barrier layer between the PET substrate and the anti-glare layer to block oxygen and reduce the penetration of water vapor and oxygen into the ink film. However, if the edge sealing glue is not fully coated, i.e. the edge sealing glue does not completely cover the barrier layer, water vapor and oxygen will still penetrate from the side of the barrier layer and pass through the PET substrate into the ink film, causing display abnormalities and ink particle failure. SUMMARY

[0004] The utility model aims at providing an electronic paper. The electronic paper can improve the barrier effect of water vapor and oxygen and eliminate the influence of edge sealing glue coating on the ink particle layer.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The electronic paper comprises:

[0007] a driving substrate;

[0008] a display assembly disposed on the upper end surface of the driving substrate, the display assembly comprising an ink particle layer;

[0009] a water blocking mechanism comprising an anti-glare assembly and a water blocking assembly, the water blocking assembly being disposed between the anti-glare assembly and the ink particle layer, and the water blocking layer in the water blocking assembly being capable of being bonded to the ink particle layer;

[0010] an edge sealing glue coated on the driving substrate corresponding to the peripheral wall of the display assembly.

[0011] As a further technical solution, the water blocking assembly further comprises a first PET substrate, and the lower end surface of the first PET substrate is coated with a barrier material to form the water blocking layer.

[0012] As a further technical solution, the water blocking assembly further comprises a light protective film, and the light protective film is disposed on the water blocking layer.

[0013] As a further technical solution, the anti-glare assembly comprises a second PET substrate, an anti-glare layer and a first adhesive layer.

[0014] The upper end surface of the second PET substrate is sputtered with an AG material (Anti-Glare) to form the anti-glare layer, and the lower end surface of the second PET substrate is bonded to the upper end surface of the first PET substrate through the first adhesive layer.

[0015] As a further technical solution, the anti-glare assembly further comprises a heavy protective film, which is attached to the anti-glare layer.

[0016] As a further technical solution, the display assembly further comprises a second adhesive layer and a third adhesive layer, the second adhesive layer is arranged on the upper end surface of the ink particle layer, the water-blocking layer can be bonded to the second adhesive layer, and the lower end surface of the ink particle layer can be bonded to the driving substrate through the third adhesive layer.

[0017] As a further technical solution, the display assembly further comprises an aluminum film and a protective release film, the aluminum film can be torn and arranged on the third adhesive layer, and the protective release film can be torn and arranged on the second adhesive layer.

[0018] As a further technical solution, the first adhesive layer, the second adhesive layer and the third adhesive layer are all arranged as OCA transparent double-sided adhesive.

[0019] As a further technical solution, in the thickness direction, the cross-sectional area of the display assembly and the cross-sectional area of the water-blocking assembly are both smaller than the cross-sectional area of the driving substrate, and the cross-sectional area of the water-blocking assembly is larger than the cross-sectional area of the display assembly.

[0020] As a further technical solution, in the thickness direction, the cross-sectional area of the water-blocking assembly is equal to the cross-sectional area of the anti-glare assembly.

[0021] Compared with the prior art, the electronic paper provided by the utility model has the technical advantages that:

[0022] Since the display assembly is arranged on the upper end surface of the driving substrate, the water-blocking assembly is arranged between the anti-glare assembly and the ink particle layer, and the water-blocking layer can be bonded to the ink particle layer. After the electronic paper is assembled, the edge sealing glue is coated on the driving substrate corresponding to the peripheral wall of the display assembly; since the water-blocking layer can be directly bonded to the ink particle layer, even if the edge sealing glue coating is not full, the water vapor and oxygen that seep into the water-blocking mechanism from between the anti-glare assembly and the water-blocking assembly will be blocked by the water-blocking layer, so as to avoid the water vapor and oxygen from penetrating into the ink particle layer, thereby ensuring the blocking effect of the water vapor and oxygen and eliminating the influence of the edge sealing glue coating effect on the ink particle layer. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the contents of the embodiments of the present application and these drawings without any creative labor.

[0024] Figure 1 is a partial sectional view of the electronic paper provided by the embodiments of the present application;

[0025] Figure 2 is a disassembled sectional view of the electronic paper provided by the embodiments of the present application.

[0026] In the drawings:

[0027] 100, driving substrate;

[0028] 200, display assembly; 210, ink particle layer; 220, second adhesive layer; 230, third adhesive layer;

[0029] 300, water blocking mechanism; 310, anti-glare assembly; 311, second PET substrate; 312, anti-glare layer; 313, first adhesive layer; 314, heavy protective film; 320, water blocking assembly; 321, water blocking layer; 322, first PET substrate; 323, light protective film;

[0030] 400, edge sealing glue. DETAILED DESCRIPTION

[0031] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described drawings.

[0032] In the present application, the terms "comprise", "contain", "have" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0033] In the present application, the term "and / or", is a description of an associated relationship with associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent: the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in the present application generally indicates that the front and rear associated objects are in a "and / or" relationship.

[0034] In the present application, the terms "connection", "combination", "coupling", "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, and indirect connection refers to the connection of two parts or components with at least one intermediate part. These two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0035] In the present application, those of ordinary skill in the art will understand that the relative terms used in connection with the quantity or condition (for example, "about", "approximately", "substantially" and the like) include the value indicated by the context and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain number of degrees (for example, 1 degree, 5 degrees, 10 degrees or more) added or subtracted from the indicated angle.

[0036] In the present application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, it is also understood in the context that when referring to an element connected to another element "on" or "under", it can be directly connected to another element "on" or "under" or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below, etc.

[0038] In combination Figure 1 and Figure 2 As shown in the present embodiment, the electronic paper can improve the barrier effect of water vapor and oxygen, and eliminate the influence of the sealing adhesive 400 coating effect on the ink particle layer 210. Specifically, the electronic paper includes a driving substrate 100, a display assembly 200, a water blocking mechanism 300 and a sealing adhesive 400; the display assembly 200 is arranged on the upper end surface of the driving substrate 100, and the display assembly 200 includes an ink particle layer 210; the water blocking mechanism 300 includes an anti-glare assembly 310 and a water blocking assembly 320, the water blocking assembly 320 is arranged between the anti-glare assembly 310 and the ink particle layer 210, and the water blocking layer 321 in the water blocking assembly 320 can be bonded to the ink particle layer 210; the sealing adhesive 400 is coated on the driving substrate 100 corresponding to the peripheral wall of the display assembly 200.

[0039] In combination Figure 1 and Figure 2 As shown in the present embodiment, the display assembly 200 is arranged on the upper end surface of the driving substrate 100, the water blocking assembly 320 is arranged between the anti-glare assembly 310 and the ink particle layer 210, and the water blocking layer 321 can be bonded to the ink particle layer 210. After the electronic paper is assembled, the sealing adhesive 400 is coated on the driving substrate 100 corresponding to the peripheral wall of the display assembly 200; since the water blocking layer 321 can be directly bonded to the ink particle layer 210, even if there is a case of incomplete coating of the sealing adhesive 400, the water vapor and oxygen seep into the water blocking mechanism 300 from between the anti-glare assembly 310 and the water blocking assembly 320, and then are blocked by the water blocking layer 321 to avoid the water vapor and oxygen penetrating into the ink particle layer 210, thereby ensuring the barrier effect of water vapor and oxygen and eliminating the influence of the sealing adhesive 400 coating effect on the ink particle layer 210.

[0040] Preferably, the water blocking assembly 320 further comprises a first PET substrate 322, and a lower end surface of the first PET substrate 322 is coated with a barrier material to form a water blocking layer 321 (BARRIER layer). The barrier material can be selected from polyethylene terephthalate, polyvinyl chloride, polymethyl methacrylate, polymethyl methacrylate, polystyrene, ethylene-vinyl acetate copolymer, etc. according to actual needs, which are not specifically limited here. The water blocking layer 321 is provided on the lower end surface of the first PET substrate 322, and when the electronic paper is stacked and assembled, only the bonding effect between the water blocking layer 321 and the ink particle layer 210 needs to be ensured, that is, the blocking effect of water vapor and oxygen can be ensured to eliminate the influence of the coating effect of the edge sealing adhesive 400 on the ink particle layer 210.

[0041] Before the water blocking assembly 320 is stacked and assembled, in order to avoid the water blocking layer 321 being contaminated or scratched, in the embodiment, the water blocking assembly 320 further comprises a light protective film 323, which can be provided on the water blocking layer 321. When it is needed to bond the water blocking layer 321 to the ink particle layer 210, the light protective film 323 can be removed. In the embodiment, the light protective film 323 is provided as a colored PET film, which protects the water blocking layer 321 and can be observed by the naked eye to determine whether the light protective film 323 on the water blocking layer 321 has been removed.

[0042] Preferably, the anti-glare assembly 310 comprises a second PET substrate 311, an anti-glare layer 312, and a first adhesive layer 313; an upper end surface of the second PET substrate 311 is sputtered with AG material to form the anti-glare layer 312, and a lower end surface of the second PET substrate 311 is bonded to an upper end surface of the first PET substrate 322 through the first adhesive layer 313.

[0043] In the embodiment, the AG material is sputtered on the upper end surface of the second PET substrate 311 to form the anti-glare layer 312, so that the anti-glare effect and display clarity of the electronic paper can be improved, and the content on the electronic paper is not easy to see when the electronic paper is viewed from the side, thereby enhancing the privacy of the electronic paper.

[0044] Preferably, in order to avoid the anti-glare layer 312 being worn during transportation or production, in the embodiment, the anti-glare assembly 310 further comprises a heavy protective film 314, which is attached to the anti-glare layer 312. The heavy protective film 314 is provided as a 65um thick PET protective film.

[0045] Preferably, in order to facilitate the adhesion of the ink particle layer 210 to the driving substrate 100 and the adhesion of the water-blocking layer 321 to the ink particle layer 210, the display assembly 200 further comprises a second adhesive layer 220 and a third adhesive layer 230. The second adhesive layer 220 is arranged on the upper end surface of the ink particle layer 210, and the water-blocking layer 321 can be adhered to the second adhesive layer 220. The lower end surface of the ink particle layer 210 can be adhered to the driving substrate 100 through the third adhesive layer 230.

[0046] Preferably, the display assembly 200 further comprises an aluminum film (not shown in the figure) and a protective release film (not shown in the figure). The aluminum film can be arranged on the third adhesive layer 230, and the protective release film can be arranged on the second adhesive layer 220. By arranging the aluminum film and the protective release film, the aluminum film and the protective release film can protect the ink particle layer 210 from external pollution before the ink particle layer 210 is assembled. When the ink particle layer 210 is assembled, the aluminum film on the lower end surface of the ink particle layer 210 is removed, and the ink particle layer 210 is adhered to the upper end surface of the driving substrate 100 through the third adhesive layer 230. Then, the protective release film on the upper end surface of the ink particle layer 210 is removed, the second adhesive layer 220 is exposed, and the water-blocking layer 321 is adhered to the second adhesive layer 220.

[0047] Preferably, the first adhesive layer 313, the second adhesive layer 220, and the third adhesive layer 230 are all arranged as OCA (Optically Clear Adhesive) transparent double-sided adhesive. Since the OCA transparent double-sided adhesive has high transparency, it can effectively reduce light scattering and reflection to ensure the clarity and brightness of the display. It also has excellent adhesion performance to ensure long-term stability. The thickness of the OCA transparent double-sided adhesive is uniform, which can ensure that the adhesion effect of the electronic paper is the same everywhere, avoid the generation of bubbles and voids, and ensure the flatness of the attached surface to further isolate water vapor and oxygen from entering the electronic paper. At the same time, the OCA transparent double-sided adhesive has good anti-yellowing performance and is not prone to yellowing after long-term use, which can prolong the service life of the electronic paper. The OCA transparent double-sided adhesive is also resistant to ultraviolet light, high temperature, and moisture, which can improve the applicability of the electronic paper. The refractive index of the OCA transparent double-sided adhesive is close to that of glass and plastic, which can reduce light refraction and reflection and improve the display effect of the electronic paper. Therefore, arranging the first adhesive layer 313, the second adhesive layer 220, and the third adhesive layer 230 as OCA transparent double-sided adhesive can ensure the adhesion effect and the subsequent use effect of the electronic paper.

[0048] In some other embodiments, the first adhesive layer 313, the second adhesive layer 220 and the third adhesive layer 230 can also be adaptively selected from LOCA (Liquid Optically Clear Adhesive), OCR (Optically Clear Resin), SCA (Solid Clear Adhesive), UV (UV Curing Adhesive) and the like according to actual needs, which will not be described herein again.

[0049] Preferably, in the thickness direction, the cross-sectional area of the display assembly 200 and the water-blocking assembly 320 is smaller than that of the driving substrate 100, and the cross-sectional area of the water-blocking assembly 320 is larger than that of the display assembly 200.

[0050] For the convenience of description, in the present embodiment, the cross-sectional shape of the display assembly 200, the water-blocking assembly 320 and the driving substrate 100 in the thickness direction is taken as an example for description, which is set as a rectangle. The middle lines of the display assembly 200, the water-blocking assembly 320 and the driving substrate 100 are arranged in the same line.

[0051] In combination with Figure 1 and Figure 2 As shown in FIG. 4, after the electronic paper is stacked, a gap is formed between the water-blocking assembly 320 and the driving substrate 100, and the coating effect of the edge sealing adhesive 400 on the four sides of the display assembly 200 after being coated on the driving substrate 100 is improved, so as to ensure the fullness of the coating of the edge sealing adhesive 400, thereby further reducing the probability of water vapor and oxygen penetrating into the electronic paper from the four sides of the electronic paper.

[0052] Preferably, in order to ensure the anti-glare effect and further reduce the glare and reflection on the surface of the electronic paper, in the present embodiment, in the thickness direction, the cross-sectional area of the water-blocking assembly 320 is equal to that of the anti-glare assembly 310.

[0053] In summary, the preparation process of the electronic paper is as follows:

[0054] Firstly, the driving substrate 100 is cleaned and dried, the aluminum film on the lower end surface of the ink particle layer 210 is removed, the ink particle layer 210 is adhered to the upper end surface of the driving substrate 100 through the third adhesive layer 230, the protective release film on the upper end surface of the ink particle layer 210 is removed, and the second adhesive layer 220 is exposed;

[0055] Secondly, the light protective film 323 arranged on the water-blocking layer 321 is removed to expose the water-blocking layer 321, and the water-blocking layer 321 is adhered to the second adhesive layer 220. The lower end surface of the second PET substrate 311 is adhered to the upper end surface of the first PET substrate 322 through the first adhesive layer 313, thereby completing the stacking of the whole mechanism of the electronic paper.

[0056] Finally, the edge sealing glue 400 is coated around the stacked electronic paper, so as to fill the gap between the driving substrate 100 and the water blocking mechanism 300, and then heat curing is performed to dry the edge sealing glue 400.

[0057] In the whole process, as long as the adhesion effect between the water blocking layer 321 and the ink particle layer 210 is ensured, even if the edge sealing glue 400 is not fully coated, the water vapor and oxygen that seep into the water blocking mechanism 300 from between the anti-glare assembly 310 and the water blocking assembly 320 can be blocked, the water vapor and oxygen are prevented from penetrating into the ink particle layer 210, the blocking effect of the water vapor and oxygen is ensured, and the influence of the coating effect of the edge sealing glue 400 on the ink particle layer 210 is eliminated.

[0058] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. Electronic paper, characterized by The application relates to a display device. The display device comprises a driving substrate (100), a display assembly (200) arranged on the upper end surface of the driving substrate (100), the display assembly (200) comprising an ink particle layer (210), a water-blocking mechanism (300) comprising an anti-glare assembly (310) and a water-blocking assembly (320), the water-blocking assembly (320) being arranged between the anti-glare assembly (310) and the ink particle layer (210), and a water-blocking layer (321) in the water-blocking assembly (320) being capable of being bonded to the ink particle layer (210), and an edge sealing adhesive (400) corresponding to the peripheral wall of the display assembly (200) and coated on the driving substrate (100). The water-blocking assembly (320) further comprises a first PET substrate (322), and the lower end surface of the first PET substrate (322) is coated with a barrier material to form the water-blocking layer (321). The water-blocking assembly (320) further comprises a light protective film (323) which is arranged on the water-blocking layer (321). The anti-glare assembly (310) comprises a second PET substrate (311), an anti-glare layer (312) and a first adhesive layer (313).

2. The electronic paper of claim 1, wherein, The upper end surface of the second PET substrate (311) is sputtered with AG material to form the anti-glare layer (312), and the lower end surface of the second PET substrate (311) is bonded to the upper end surface of the first PET substrate (322) through the first adhesive layer (313).

3. The electronic paper of claim 1, wherein, The anti-glare assembly (310) further comprises a heavy protective film (314) which is arranged on the anti-glare layer (312).

4. The electronic paper of claim 2, wherein, The display assembly (200) further comprises a second adhesive layer (220) and a third adhesive layer (230), the second adhesive layer (220) being arranged on the upper end surface of the ink particle layer (210), the water-blocking layer (321) being capable of being bonded to the second adhesive layer (220), and the lower end surface of the ink particle layer (210) being capable of being bonded to the driving substrate (100) through the third adhesive layer (230). The display assembly (200) further comprises an aluminum film and a protective release film, the aluminum film being arranged on the third adhesive layer (230), and the protective release film being arranged on the second adhesive layer (220).

5. The electronic paper of claim 4, wherein, The first adhesive layer (313), the second adhesive layer (220) and the third adhesive layer (230) are all OCA transparent double-sided adhesive tapes.

6. The electronic paper of claim 4, wherein, In the thickness direction, the cross-sectional area of the display assembly (200) and the cross-sectional area of the water-blocking assembly (320) are both smaller than the cross-sectional area of the driving substrate (100), and the cross-sectional area of the water-blocking assembly (320) is larger than the cross-sectional area of the display assembly (200).

7. The electronic paper of claim 6, wherein, In the thickness direction, the cross-sectional area of the water-blocking assembly (320) is equal to the cross-sectional area of the anti-glare assembly (310).

8. The electronic paper of claim 6, wherein, ​ 9. The electronic paper according to any one of claims 1 to 8, characterized by, ​ 10. The electronic paper of claim 9, wherein, ​

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