Narrow-frame electronic paper structure

Abstract

The utility model relates to the technical field of electronic display screens, and discloses a narrow-frame electronic paper structure, which is characterized in that a conductive silver adhesive is arranged in a non-display area of the electronic paper structure and is used for realizing electric connection between a second electrode and a first electrode in an electronic ink film, so that the effect of supplying power to the electronic ink film is realized; the conductive silver adhesive is arranged in an edge sealing adhesive position area of an original electronic paper product (the space occupied by the edge sealing adhesive at a frame of the electronic paper product is utilized), and the frame of the electronic paper is not additionally occupied; the problem that the electronic ink film occupies a redundant frame due to the existence of an ear region (which cannot be imaged) because the ear region needs to be arranged on the traditional electronic ink film and a through hole is formed in the ear region is avoided; and meanwhile, as the electronic ink film in the scheme does not need to be provided with an ear region any more, the electronic ink film is in a complete rectangle shape, when the electronic ink film is cut, the cutting path does not need to be frequently adjusted, and the cutting difficulty of the electronic ink film is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic display technology, and in particular to a narrow-bezel electronic paper structure. Background Technology

[0002] The structure of an electronic paper product includes an electronic ink film and a substrate. Electrodes are present both inside the electronic ink film and on the substrate, and electrical connections are required between the two electrodes. Traditional electronic paper products typically place vias (such as...) in the non-display area of ​​the electronic ink film. Figure 1 As shown, an ear area is formed at the via, and the via is filled with conductive material to electrically connect the electronic ink film and the electrodes on the substrate. Finally, under the action of the driving circuit in the substrate, the image is formed. Due to the presence of the ear area, the shape of the electronic ink film is not a complete rectangle, which requires frequent turning and adjustment in the ear area during cutting, resulting in a complicated processing procedure. At the same time, the ear setting also requires extra border space, resulting in a large border of the electronic paper product. Utility Model Content

[0003] The purpose of this invention is to provide a narrow-bezel electronic paper structure to solve the problem in the prior art where the vias cause the electronic ink film ear area to occupy excessive bezel space and make cutting and processing more complicated.

[0004] To achieve the above objectives, this application provides a narrow-bezel electronic paper structure with intersecting X, Y, and Z directions, including a first substrate, a first electrode, and an electronic ink film. The electronic ink film, the first electrode, and the first substrate are stacked sequentially from top to bottom along the Z direction; a portion of the electronic ink film projects onto the Z direction to form a display area.

[0005] A non-display area is located outside the display area and surrounds the display area; in the Z direction, the projection of the display area is located inside the projection of the first electrode, and the area between the projection of the display area in the Z direction and the projection of the first electrode in the Z direction constitutes the non-display area;

[0006] The electronic ink film has a second electrode, the projection of which in the Z direction is located between the display area and the non-display area;

[0007] A conductor is disposed within the non-display area, and the conductor is used to electrically connect the first electrode and the second electrode.

[0008] In some embodiments of this application, the non-display area includes two first short side areas and two first long side areas;

[0009] The two first short side regions are located on both sides along the Y direction, and the two first long side regions are located on both sides along the X direction;

[0010] The conductor is disposed in at least one of the first short side region and / or the first long side region.

[0011] In some embodiments of this application, the narrow-bezel electronic paper structure further includes a waterproof membrane disposed on the upper surface of the electronic ink film;

[0012] The projection of the electronic ink film in the Z direction is located inside the projection of the waterproof film in the Z direction;

[0013] The conductor is disposed between the waterproof membrane and the first electrode.

[0014] In some embodiments of this application, the conductor is conductive silver paste.

[0015] In some embodiments of this application, the electronic ink film further includes a second substrate, an electrophoretic display layer, and an adhesive layer, with the second electrode disposed between the second substrate and the electrophoretic display layer;

[0016] The waterproof membrane is bonded to the upper surface of the second substrate, and the adhesive layer is bonded to the upper surface of the first electrode.

[0017] In some embodiments of this application, the projections of the second substrate and the second electrode in the Z direction coincide; the projections of the electrophoretic display layer and the adhesive layer in the Z direction coincide.

[0018] The projection of the electrophoretic display layer in the Z-direction constitutes the display area, and in the Z-direction, the projection of the electrophoretic display layer is located inside the projection of the second electrode.

[0019] In some embodiments of this application, the projection of the first substrate in the Z direction at least covers the projection of the first electrode in the Z direction.

[0020] In some embodiments of this application, the narrow-bezel electronic paper structure further includes an edge-sealing adhesive, which is located on the outside of the conductor and surrounds the display area.

[0021] In some embodiments of this application, the first substrate is a glass structure.

[0022] In some embodiments of this application, the second substrate is a plastic structural component.

[0023] Compared with the prior art, the narrow-bezel electronic paper structure of this utility model has the following advantages: This solution sets a conductor in the non-display area (bezel position) of the electronic paper structure to electrically connect the second electrode in the electronic ink film and the first electrode on the first substrate, and to supply power to the electronic ink film, thereby achieving the imaging effect; it avoids the problem of the traditional method of setting an ear area in the non-display area of ​​the electronic ink film and opening a via in the ear area, which causes the electronic ink film to occupy an extra bezel due to the ear area (unable to display the image); at the same time, since the electronic ink film in this solution no longer needs an ear area, its shape is a complete rectangle, so the cutting path does not need to be frequently adjusted when cutting the electronic ink film, reducing the difficulty of cutting the electronic ink film. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the electronic paper structure in the prior art;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of electronic paper at the via in the prior art;

[0026] Figure 3 This is a cross-sectional view of the electronic paper at the edge in the prior art.

[0027] Figure 4 This is a schematic diagram of the narrow-bezel electronic paper structure of this utility model;

[0028] Figure 5 This is a cross-sectional view of the narrow-bezel electronic paper of this utility model at the bezel.

[0029] In the diagram, 1 represents the display area;

[0030] 2. Electronic ink film; 21. Second substrate; 22. Second electrode; 23. Electrophoretic display layer; 24. Adhesive layer; 25. Ear area;

[0031] 3. First substrate; 4. Waterproof membrane; 5. Via; 6. First electrode; 7. Sealing adhesive; 8. Conductor; 9. Non-display area; 91. First short side area; 92. First long side area. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as an obstruction of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0034] like Figures 1-3 As shown, this is the structure of an electronic paper product in the prior art. Two ear-shaped regions 25 are provided at the bottom of the electronic paper. Vias 5 are disposed within the ear-shaped regions 25. Conductive material is filled within the vias 5 to achieve electrical connection between the electrodes within the electronic ink film 2 and the electrodes on the first substrate 3, thereby achieving the effect of imaging on the electronic ink film 2. Figure 2 The diagram shown is a cross-sectional view of the ear region 25 in an existing electronic paper product. Figure 3 The diagram shown is a cross-sectional view of an electronic paper product at the edge in the prior art. The electronic ink film 2, from top to bottom, consists of a second substrate 21 (plastic substrate), a second electrode 22 (transparent electrode), an electrophoretic display layer 23, and an adhesive layer 24. The adhesive layer 24 is bonded to the first electrode 6, which is a glass electrode, and is disposed on the first substrate 3 (glass substrate). A waterproof film 4 covers the second substrate 21, and edge adhesive is used to seal the electronic ink film 2 between the waterproof film 4 and the first electrode 6. Figure 1 , Figure 2 As shown, the presence of the ear area 25 of the electronic ink film 2 causes it to occupy extra bezel space, which is not conducive to improving the screen ratio of electronic paper products. At the same time, due to the setting of the ear area 25, the cutting path needs to be frequently adjusted when cutting the ear area 25 of the electronic ink film 2, making the cutting process more complicated.

[0035] like Figures 4-5As shown, this application proposes a narrow-bezel electronic paper structure with intersecting X, Y, and Z directions. It includes a first substrate 3 (a glass substrate with a driving circuit inside), a first electrode 6 (a glass electrode electrically connected to the driving circuit in the first substrate 3), and an electronic ink film 2. The driving circuit supplies power to the first electrode 6 and the second electrode 22, thereby generating an electric field between the first electrode 6 and the second electrode 22, which causes the imaging ions in the electronic ink film 2 to move, thus achieving the imaging effect (this is prior art and will not be described in detail here). The electronic ink film 2, the first electrode 6, and the first substrate 3 are stacked sequentially from top to bottom along the Z direction.

[0036] The projection of a portion of the electronic ink film 2 in the Z-direction constitutes the display area 1; the non-display area 9 is located outside the display area 1 and surrounds the display area 1; in the Z-direction, the projection of the display area 1 is located inside the projection of the first electrode 6, and the area between the projection of the display area 1 in the Z-direction and the projection of the first electrode 6 in the Z-direction constitutes the non-display area 9; the electronic ink film 2 has a second electrode 22 (transparent electrode), and the projection of the second electrode 22 in the Z-direction is located between the display area 1 and the non-display area 9; a conductor 8 is disposed in the non-display area 9, and the conductor 8 is used to electrically connect the first electrode 6 and the second electrode 22. This solution uses a conductor 8 at the edge of the electronic paper product to achieve electrical connection between the second electrode 22 inside the electronic ink film 2 and the first electrode 6 on the first substrate 3. This avoids the traditional need to set a via 5 in the non-display area (ear region 25) of the electronic ink film 2 and fill the via 5 with conductive material to achieve electrical connection between the first electrode 6 and the second electrode 22 (since the ear region 25 cannot be used for imaging, it would occupy extra edge space, increasing the edge size). In this solution, the conductor 8 is located at the edge of the electronic paper. At the edge of the product, an electrical connection is established between the second electrode 22 inside the electronic ink film 2 and the first electrode 6 on the first substrate 3. This does not occupy the edge of the electronic paper product (it only occupies part of the area originally used to fill the sealing adhesive 7), and will not make the edge of the electronic paper product larger. At the same time, since the electronic ink film 2 no longer needs to set the ear area 25 for opening the via 5, the overall shape of the electronic ink film 2 is a complete rectangle. This means that when the electronic ink film 2 is cut, the cutting path does not need to be frequently adjusted, reducing the processing procedures during the processing of the electronic ink film 2.

[0037] In some embodiments of this application, such as Figure 4As shown, the non-display area 9 includes two first short side areas 91 and two first long side areas 92; the two first short side areas 91 are located on both sides along the Y direction, and the two first long side areas 92 are located on both sides along the X direction; the conductor 8 is disposed in at least one of the first short side areas 91 and / or the first long side area 92; as long as the electrical connection between the first electrode 6 and the second electrode 22 can be achieved, the imaging effect can be realized; therefore, the conductor 8 can be disposed in only one of the first short side areas 91, or in one of the first long side areas 92, or both in the first short side areas 91 and the first long side areas 92, or both in the two first short side areas 91 and the two first long side areas 92; as long as the electrical connection between the first electrode 6 and the second electrode 22 can be achieved.

[0038] In some embodiments of this application, such as Figure 5 As shown, the narrow-bezel electronic paper structure also includes a waterproof membrane 4, which is disposed on the upper surface of the electronic ink film 2. The projection of the electronic ink film 2 in the Z direction is located inside the projection of the waterproof membrane 4 in the Z direction (so that the electronic ink film 2 can be completely covered by the waterproof membrane 4). The conductor 8 is disposed between the waterproof membrane 4 and the first electrode 6.

[0039] In some embodiments of this application, the conductor 8 is a conductive silver paste. The conductive silver paste binds conductive particles together through the adhesive effect of the base resin to form a conductive path and achieve conductive connection of the bonded materials. Alternatively, the conductor 8 can be other forms of conductive materials, such as metal conductive particles with good conductivity, such as gold, mixed in ordinary edge sealing adhesive 7.

[0040] In some embodiments of this application, such as Figure 5 As shown, the electronic ink film 2 also includes a second substrate 21 (which serves as a structural support to maintain the shape and stability of the electronic ink film 2), an electrophoretic display layer 23 (composed of a number of microcapsules, each containing negatively charged white electrophoretic particles and positively charged black electrophoretic particles, suspended in a transparent liquid), and an adhesive layer 24 (used to bond the electronic ink film 2 to the first electrode 6). The second electrode 22 is disposed between the second substrate 21 and the electrophoretic display layer 23. The second substrate 21, the second electrode 22, and the electrophoretic display layer 23 are all bonded together. The waterproof membrane 4 is bonded to the upper surface of the second substrate 21, and the adhesive layer 24 is bonded to the upper surface of the first electrode 6.

[0041] When the driving circuit located in the first substrate 3 supplies power to the first electrode 6 and the second electrode 22 respectively, an electric field is formed between the first electrode 6 and the second electrode 22. The electrophoretic particles located in the electrophoretic display layer 23 will move to the top of the microcapsule, so that the user can see white or black on this area. By applying different voltages, the microcapsule can present a half-black and half-white effect, and even create color-changing electronic paper (to achieve imaging effect). Since its imaging principle is existing technology, it will not be described in detail here.

[0042] In some embodiments of this application, the projections of the second substrate 21 and the second electrode 22 in the Z direction coincide, which is used to support the second electrode 22 to give it high structural stability; the projections of the electrophoretic display layer 23 and the adhesive layer 24 in the Z direction coincide; since the electrophoretic display layer 23 in the electronic ink film 2 is used for imaging, the projection of the electrophoretic display layer 23 in the Z direction constitutes the display area 1, and the projection of the electrophoretic display layer 23 in the Z direction is located inside the projection of the second electrode 22 in the Z direction, so that the area below the second electrode 22 that extends beyond the electrophoretic display layer 23 and the adhesive layer 24 can be filled by the conductor 8, thereby realizing the electrical connection between the second electrode 22 and the first electrode 6.

[0043] In some embodiments of this application, the projection of the first substrate 3 in the Z direction at least covers the projection of the first electrode 6 in the Z direction. The first substrate 3 serves as the carrier of the first electrode 6 (the size of the first substrate 3 should be greater than or equal to the size of the first electrode 6). The first substrate 3 is provided with a driving circuit (which is prior art) that is electrically connected to the first electrode 6. The driving circuit supplies power to the first electrode 6 and the second electrode 22 to achieve the effect of imaging on the electrophoretic display layer 23.

[0044] In some embodiments of this application, such as Figure 5 As shown, the narrow bezel electronic paper structure also includes an edge sealing adhesive 7, which is located on the outside of the conductor 8 and surrounds the display area 1. The edge sealing adhesive 7 is used to seal and reliably fix the conductor 8 and the electronic ink film 2.

[0045] In some embodiments of this application, the first substrate 3 is a glass structure, such as a glass substrate.

[0046] In some embodiments of this application, the second substrate 21 is a plastic structural component, such as PET material.

[0047] In summary, this utility model embodiment provides a narrow-bezel electronic paper structure. This solution uses conductive silver paste in the non-display area 9 of the electronic paper structure to electrically connect the second electrode 22 within the electronic ink film 2 with the first electrode 6 on the first substrate 3, thus supplying power to the electronic ink film 2. This conductive silver paste is located in the area where the original edge-sealing adhesive 7 of the electronic paper product would normally be (making full use of the space occupied by the edge-sealing adhesive 7 at the edge of the electronic paper product), without additionally occupying the electronic paper's edge. This avoids the problem of the traditional method of setting an ear area 25 in the electronic ink film 2 and opening a via 5 within the ear area 25, which results in the electronic ink film 2 occupying an extra edge due to the ear area 25 (which cannot display images). Furthermore, since the electronic ink film 2 in this solution no longer needs an ear area 25, its shape is a complete rectangle, thus reducing the difficulty of cutting the electronic ink film 2 by eliminating the need for frequent adjustments to the cutting path.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A narrow-bezel electronic paper structure, having intersecting X, Y, and Z directions, characterized in that, The device includes a first substrate (3), a first electrode (6), and an electronic ink film (2), wherein the electronic ink film (2), the first electrode (6), and the first substrate (3) are stacked sequentially from top to bottom along the Z direction; a portion of the electronic ink film (2) is projected onto the Z direction to form a display area (1); A non-display area (9) is located outside the display area (1) and is arranged around the display area (1); in the Z direction, the projection of the display area (1) is located inside the projection of the first electrode (6), and the area between the projection of the display area (1) in the Z direction and the projection of the first electrode (6) in the Z direction constitutes the non-display area (9); The electronic ink film (2) has a second electrode (22), the projection of the second electrode (22) in the Z direction being located between the display area (1) and the non-display area (9); A conductor (8) is disposed in the non-display area (9), and the conductor (8) is used to electrically connect the first electrode (6) and the second electrode (22).

2. The narrow-bezel electronic paper structure according to claim 1, characterized in that, The non-display area (9) includes two first short side areas (91) and two first long side areas (92); The two first short side regions (91) are located on both sides along the Y direction, and the two first long side regions (92) are located on both sides along the X direction; The conductor (8) is disposed in at least one of the first short side region (91) and / or the first long side region (92).

3. The narrow-bezel electronic paper structure according to claim 1, characterized in that, The narrow-bezel electronic paper structure also includes a waterproof membrane (4), which is disposed on the upper surface of the electronic ink film (2); The electronic ink film (2) is projected in the Z direction and is located inside the waterproof film (4) in the Z direction projection. The conductor (8) is disposed between the waterproof membrane (4) and the first electrode (6).

4. The narrow-bezel electronic paper structure according to claim 2, characterized in that, The conductor (8) is conductive silver paste.

5. The narrow-bezel electronic paper structure according to claim 3, characterized in that, The electronic ink film (2) further includes a second substrate (21), an electrophoretic display layer (23), and an adhesive layer (24), and the second electrode (22) is disposed between the second substrate (21) and the electrophoretic display layer (23); The waterproof membrane (4) is bonded to the upper surface of the second substrate (21), and the adhesive layer (24) is bonded to the upper surface of the first electrode (6).

6. The narrow-bezel electronic paper structure according to claim 5, characterized in that, The projections of the second substrate (21) and the second electrode (22) in the Z direction coincide; the projections of the electrophoretic display layer and the adhesive layer in the Z direction coincide. The electrophoretic display layer (23) forms the display area (1) in the Z direction, and in the Z direction, the projection of the electrophoretic display layer (23) is located inside the projection of the second electrode (22).

7. The narrow-bezel electronic paper structure according to claim 1, characterized in that, The projection of the first substrate (3) in the Z direction at least covers the projection of the first electrode (6) in the Z direction.

8. The narrow-bezel electronic paper structure according to any one of claims 1-7, characterized in that, The narrow bezel electronic paper structure also includes an edge sealing adhesive (7), which is located on the outside of the conductor (8) and surrounds the display area (1).

9. The narrow-bezel electronic paper structure according to claim 1, characterized in that, The first substrate (3) is a glass structure.

10. The narrow-bezel electronic paper structure according to claim 5, characterized in that, The second substrate (21) is a plastic structural component.

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