Electronic paper display device, electronic equipment and manufacturing method thereof

Abstract

The invention discloses an electronic paper display device, electronic equipment and a manufacturing method of the electronic paper display device. The electronic paper display device comprises a packaging plate, a driving plate, a filling dielectric layer, a supporting structure and a shading structure, and the packaging plate is provided with a first electrode; a plurality of pixel units are formed on the driving plate, each pixel unit comprises a thin film transistor and a second electrode, an insulating layer is arranged between the second electrode and the thin film transistor, a communicating hole is formed in the insulating layer, and the second electrode is electrically connected with the thin film transistor at the communicating hole; the filling dielectric layer is arranged between the packaging plate and the driving plate, and the filling dielectric layer comprises electronic paste; the supporting structure is connected to the packaging plate and the driving plate, and the supporting structure is arranged on the peripheral side of the pixel unit; the shading structure is located between the supporting structure and the packaging plate, the shading structure has a first projection in the thickness direction of the packaging plate, the supporting structure has a second projection in the thickness direction of the packaging plate, and the first projection and the second projection at least partially coincide.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic paper display, and in particular to an electronic paper display device, an electronic device and a manufacturing method thereof. BACKGROUND

[0002] Due to the energy-saving, green, non-eye-damaging characteristics of electronic paper displays, with the progress of technology and the improvement of living standards, electronic paper displays are becoming more and more popular among users, especially in electronic book readers, ink screens, electronic logistics labels and other products. However, due to the special component materials, display methods, production processes and optical system design, the traditional electronic paper display has the problems of narrow color gamut, color shift and poor visual effect. Moreover, since the electronic paper industry is a typical heavy asset industry, slight adjustment of the production process will cause sharp increase in cost and decrease in yield, bringing great difficulties to business operation and capacity ramp-up. Therefore, how to improve the optical system design and production process of the electronic paper display under the premise of strict cost control and minimal process change, so as to improve the visual display effect of the electronic paper display, has become a problem worth considering. SUMMARY

[0003] The electronic paper display device and the manufacturing method thereof disclosed in the present application solve the problem of narrow color gamut, color shift and poor visual effect of the electronic paper display device under the premise of not making large adjustments to the production process as much as possible and strict cost control.

[0004] In a first aspect, the present application provides an electronic paper display device, which comprises: a packaging plate, the packaging plate being provided with a first electrode; a driving plate, the driving plate being formed with a plurality of pixel units, each pixel unit comprising a thin film transistor and a second electrode, an insulating layer being arranged between the second electrode and the thin film transistor, the insulating layer being provided with a communication hole, the second electrode being electrically connected with the thin film transistor at the communication hole; a filling medium layer, the filling medium layer being arranged between the packaging plate and the driving plate, and the filling medium layer comprising electronic paste; a supporting structure, the supporting structure being located between the packaging plate and the driving plate and being connected with the packaging plate and the driving plate, and the supporting structure being arranged on the periphery of the pixel units; a light shielding structure, the light shielding structure being located between the supporting structure and the packaging plate, and the light shielding structure having a first projection in the thickness direction of the packaging plate, the supporting structure having a second projection in the thickness direction of the packaging plate, and the first projection and the second projection at least partially overlapping.

[0005] In a second aspect, the present application provides a manufacturing method of an electronic paper display device, which comprises: A packaging plate and a driving plate are provided, the driving plate is formed with a plurality of pixel units; A light shielding matrix is arranged on the packaging plate, the light shielding structure has a first projection in the thickness direction of the packaging plate; A support matrix is arranged on the driving plate or the packaging plate; The support matrix is located between the packaging plate and the driving plate, the support structure has a second projection in the thickness direction of the packaging plate, and the first projection and the second projection at least partially overlap, the driving plate and the packaging plate are attached to form a box, and an electronic paper display device is obtained.

[0006] In a third aspect, the present application provides an electronic device, which comprises the electronic paper display device according to any one of the embodiments of the present application, or a manufacturing process of the electronic device comprises the manufacturing method of the electronic paper display device according to any one of the embodiments of the present application.

[0007] The present application provides an electronic paper display device, an electronic device and a manufacturing method thereof. The electronic paper display device is better shielded from the reflected light of the support structure through the form layout and process design of the light shielding structure, thereby solving the problems of narrow color gamut, poor visual effect of color shift and the like of the electronic paper display device under the premise of as little as possible adjustment of the production process and strict control of the cost.

[0008] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0010] Figure 1 is a structural schematic diagram of an electronic paper display device provided by an embodiment of the present application; Figure 2 is a partial structural cross-sectional schematic diagram of an electronic paper display device provided by an embodiment of the present application; Figure 3 is a partial structural cross-sectional schematic diagram of an electronic paper display device provided by an embodiment of the present application; Figure 4 is a partial structural cross-sectional schematic diagram of an electronic paper display device provided by an embodiment of the present application; Figure 5 is a partial structural cross-sectional schematic diagram of an electronic paper display device provided by an embodiment of the present application; Figure 6is a partial structure cross-sectional view of the electronic paper display device at A in Figure 5 Figure 7 is a partial structure cross-sectional view of another electronic paper display device at A in Figure 5 Figure 8 is a schematic diagram of a step flow of a manufacturing method of the electronic paper display device.

[0011] Legend of signs: 100, electronic paper display device; 10, packaging plate; 11, first electrode; 12, color film; 13, leveling layer; 20, driving plate; 21, pixel unit; 22, second electrode; 23, thin film transistor; 24, insulating layer; 30, filling medium layer; 31, electronic paste; 32, microcavity; 40, support structure; 41, first support part; 42, second support part; 50, light shielding structure; 51, first light shielding part; 52, second light shielding part.

[0012] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. 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.

[0014] The flowcharts shown in the drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor are they necessarily executed in the described order. For example, some operations / steps can be further decomposed, combined or partially merged, so the actual execution order can be changed according to the actual situation.

[0015] It should be understood that the terms used in this specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and the appended claims of the present application, unless otherwise clearly indicated by the context, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0016] ​​It should be understood that, in order to facilitate clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", etc. are used to distinguish the same items or similar items with basically the same function and role. For example, the first data and the second data are only used to distinguish different data, and do not limit the order. Those skilled in the art can understand that the terms "first", "second", etc. do not limit the quantity and execution order, and the terms "first", "second", etc. also do not necessarily mean different.

[0017] It should also be understood that the term "and / or" used in the specification and the appended claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0018] Electronic paper display has the advantages of green, energy saving, no harm to eyes, etc. Once launched, it is widely favored by consumers. In addition to traditional electronic book paper display and other application scenarios, electronic paper display is also widely used in electronic tags of intelligent logistics to realize low-energy-consumption logistics information identification. In addition to the above application scenarios, the current electronic paper display technology is also developing rapidly in the direction of larger display area, higher refresh rate and better color effect. In the future, it is likely to be applied to large-screen televisions, desktop office and other fields, providing green, energy-saving, and eye-friendly visual display solutions for a wider and more diverse user group.

[0019] However, due to the special optical system, production process, display method and component material of the electronic paper display device, in the electronic paper display product such as micro-cavity electronic paper display, the position of the support structure relative to the user's line of sight is not blocked by the electronic paste, and the structure is often made of organic material, which is yellow in color and has a large width due to process technology limitations. When used normally, the human eye will see the support structure reflecting and shining yellow when observing from the visible surface. This results in a high L value for black color display, and the black color is not black. When displaying a white color picture, the color of the support structure and the white color of the particles are not consistent, resulting in a yellowish white color picture. In summary, the black color is not black, the white color is not white, and the contrast of the picture is difficult to guarantee, which not only seriously affects the visual experience effect during display, but also directly limits the design progress space of the display area and color gamut color effect of the electronic paper display technology on the principle of optics, and has a negative impact on the development of the electronic paper display device.

[0020] And, since the electronic paper industry is a typical heavy asset industry, slight adjustment of the production process will cause sharp increase of cost and decrease of yield, bringing great difficulty to the enterprise operation profit and efficient use of production capacity. Any structural change needs to be carefully considered from process, technology, parameters, materials, equipment and other aspects to avoid affecting the stable production line, otherwise it will cause the decline of production capacity, yield and efficiency due to the seemingly small changes, bringing risks and losses to the producer. Therefore, the rationality, safety, simplicity and reliability of the change need to be considered from the process cost and overall structure system.

[0021] To solve the above problems, an electronic paper display device is provided in the embodiments of the present application. Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of an electronic paper display device provided by an embodiment of the present application, Figure 2 is a partial structural sectional view schematic diagram of an electronic paper display device provided by an embodiment of the present application. As shown in Figure 1 and Figure 2 , the electronic paper display device 100 includes a packaging plate 10, a driving plate 20, a filling medium layer 30, a support structure 40 and a light shielding structure 50. The packaging plate 10 can be provided with a first electrode 11, which can be used as a common electrode (also known as COMMON electrode).

[0022] In some embodiments, the driving plate 20 can be formed with a plurality of pixel units 21, and each pixel unit 21 on the driving plate 20 can include a thin film transistor 23 and a second electrode 22, with an insulating layer 24 provided between the second electrode 22 and the thin film transistor 23. The insulating layer 24 is provided with a communication hole, and the second electrode 22 is electrically connected with the thin film transistor 23 at the communication hole. It should be understood that the thin film transistor 23 can be used as a switching semiconductor, and the second electrode 22 can be used as a pixel electrode. Those skilled in the art can understand that the communication hole can include a jump hole or a via hole, and the setting position of the communication hole can be set at different positions on the insulating layer 24 according to different processes and the morphological structure of the pixel unit 21, so as to realize the communication function and assist the electrical connection between the second electrode 22 and the thin film transistor 23. Herein, no specific limitation is made.

[0023] In some embodiments, the filling medium layer 30 can be provided between the packaging plate 10 and the driving plate 20, and the filling medium layer 30 includes an electronic paste 31. It should be understood that the display particles of different colors in the electronic paste 31 can have different electrical properties. Through the setting of the first electrode 11, the second electrode 22 and the thin film transistor 23, a control electric field can be formed in the filling medium layer 30, and the electronic paste 31 can be controlled by the control electric field according to the electrical properties of the display particles of different colors, so as to realize the color changing function of the electronic paper.

[0024] In some embodiments, the support structure 40 can be located between the packaging plate 10 and the driving plate 20, and abut the packaging plate 10 and the driving plate 20, and the support structure 40 is arranged on the periphery of the pixel unit 21. By arranging the support structure 40, on the one hand, it can provide additional mechanical structural strength for the filling medium layer 30, prevent the packaging plate 10 and the driving plate 20 from crushing the filling medium layer 30 in the process of packaging, improve the yield rate and the reliability of the product, on the other hand, it can provide a more stable and regular accommodation space for the electronic paste 31, improve the control accuracy and stability of the electric field, and improve the refresh efficiency and color gamut effect of the electronic paper display device 100, prevent color mixing and color error.

[0025] In some embodiments, the light shielding structure 50 can be arranged between the support structure 40 and the packaging plate 10, and the light shielding structure 50 has a first projection in the thickness direction of the packaging plate 10, and the support structure 40 has a second projection in the thickness direction of the packaging plate 10, and the first projection and the second projection at least partially overlap. It should be understood that, due to the above-mentioned system structure of the electronic paper display device 100 and the display optical principle, by arranging the light shielding structure 50 between the support structure 40 and the packaging plate 10, and making the first projection and the second projection at least partially overlap, the reflection (yellow) light of the support structure 40 can be shielded by the light shielding structure 50, thereby improving the display effect of the electronic paper display device 100. Moreover, since the light shielding structure 50 is not only simple in structure, but also belongs to different structures from the support structure 40, the driving plate 20 and other precision components, the process parameters, materials and other aspects of the light shielding structure 50 can be adaptively adjusted according to different conditions in the process, without the need to modify the process of the existing precision components such as the support structure 40, thereby reducing the process complexity, effectively ensuring the yield rate and production efficiency.

[0026] In some embodiments, please refer to Figure 3 and Figure 4 , as shown in Figure 1 , Figure 3 and Figure 4 , the support structure 40 can be etched around the pixel unit 21 by a coating, exposure and development process to obtain a support matrix. It should be further understood that, since the support structure 40 is arranged between the packaging plate 10 and the driving plate 20, when the support matrix is etched around the pixel unit 21, the support matrix can be arranged around the pixel unit 21 regardless of whether it is arranged on the packaging plate 10 or the driving plate 20. Therefore, the support matrix can be arranged on the packaging plate 10 or the driving plate 20. Further, the arrangement position and process of the light shielding structure 50 can also be adjusted according to the arrangement mode of the support structure 40.

[0027] In some embodiments, please refer to Figure 1 andFigure 2 As shown in Figure 1 and Figure 2 The support structure 40 can include a first support part 41 and a second support part 42, the first direction can be the X direction, and the second direction can be the Y direction. The first support part 41 extends along the first direction of the surface of the packaging plate 10, and the second support part 42 extends along the second direction of the surface of the packaging plate 10. The first direction and the second direction are arranged at an angle. For example, the first direction and the second direction can be arranged at an acute angle, a right angle, or an obtuse angle. In addition, the first support part 41 and the second support part 42 can be arranged in various shapes such as a circle or a polygon, so as to better adapt to different application scenarios and different pixel units 21 in different products.

[0028] In some embodiments, the light shielding structure 50 can include a first light shielding part 51 and a second light shielding part 52. The first light shielding part 51 extends along the first direction, and the second light shielding part 52 extends along the second direction. It should be understood that, due to the layout and shape of the first support part 41 and the second support part 42 of the support structure 40 described above, the first light shielding part 51 and the second light shielding part 52 can naturally and accurately correspond to the first support part 41 and the second support part 42 in the exposure and development process or the packaging process, thereby generating a shielding effect. For example, the projection of the first light shielding part 51 in the thickness direction of the packaging plate 10 at least partially overlaps the projection of the first support part 41 in the thickness direction of the packaging plate 10. For another example, the projection of the second light shielding part 52 in the thickness direction of the packaging plate 10 at least partially overlaps the projection of the second support part 42 in the thickness direction of the packaging plate 10.

[0029] In some embodiments, the width of the first light shielding part 51 can be greater than or equal to the width of the first support part 41, and the width of the second light shielding part 52 can be greater than or equal to the width of the second support part 42. It should be understood that, in order to further improve the shielding effect of the light shielding structure 50 on the reflected light of the support structure 40, the projection area of the light shielding structure 50 in the thickness direction of the packaging plate 10 can be increased by ensuring the width of the light shielding structure 50. Thus, the light shielding structure 50 can effectively shield the support structure 40 from yellow light reflection and prevent the visual effect from being affected at more viewing angles.

[0030] In some embodiments, referring to Figures 5 to 7 The electronic paper display device 100 can be an electronic paper display device 100 with color display function. At this time, the packaging plate 10 needs to be provided with a color film 12 and a leveling layer 13. In order to avoid the adverse effects of the light shielding layer on the color display effect, the light shielding layer and the color film 12 can be arranged in different levels in the thickness direction, or can be arranged side by side in the same layer.

[0031] It should be further understood that, since the leveling effect of the leveling layer 13 is very important for the sealing and close contact between the support structure 40 and the plate, and the leveling layer 13 can provide better protection and fixation to the structure within the leveling coverage area, although the light shielding structure 50 can be arranged between the leveling layer 13 and the support structure 40, arranging the light shielding structure 50 on the side of the leveling layer 13 away from the support structure 40 will more effectively improve the display effect of the electronic paper display device 100 and improve the regularity and tightness of the filling medium layer 30 containing space, ensuring the effectiveness and controllability of the electric field, and improving the accuracy and stability of the display control.

[0032] For example, the light shielding structure 50 can be arranged between the leveling layer 13 and the color film 12, and the leveling layer 13 is arranged between the light shielding structure 50 and the support structure 40. For another example, the light shielding structure 50 can be arranged between the leveling layer 13 and the support structure 40, and the color film 12 is arranged on the side of the leveling layer 13 away from the light shielding structure 50.

[0033] For another example, at least a part of the light shielding structure 50 can surround the pixel unit 21 in the projection area of the packaging plate 10, and the light shielding structure 50 is arranged on the packaging plate 10. The packaging plate 10 is also provided with the color film 12 and the leveling layer 13, the color film 12 is arranged in the projection area, and the leveling layer 13 is arranged between the color film 12 and the support structure 40 and covers at least a part of the color film 12 and / or the light shielding structure 50.

[0034] In some embodiments, the material of the light shielding structure 50 can include at least one of non-transparent organic material and metal. For example, the light shielding structure 50 can be made of at least one of non-transparent organic material and metal. The non-transparent organic material can include photosensitive glue and other organic resin glue, and the metal can include at least one of niobium molybdenum alloy, molybdenum, aluminum and other metal materials. The photosensitive glue not only has the advantages of less waste and more green environmental protection, but also makes it possible to form the light shielding structure 50 based on the photosensitive glue through mature and precise processes such as etching, photolithography, coating, exposure and development, greatly reducing the production process complexity, improving the setting accuracy and reliability of the light shielding structure 50, and improving the reusability of the production line equipment.

[0035] In some embodiments, the material of the packaging plate 10 can include at least one of glass, acrylic plate, polyimide and polyethylene terephthalate. For example, the packaging plate 10 can be made of at least one of glass, acrylic plate, polyimide and polyethylene terephthalate. In this way, the light transmittance and mechanical structural strength are ensured, and the reliability and display effect of the electronic paper display device 100 are guaranteed.

[0036] In some embodiments, the material of the support structure 40 can include organic resin glue. After curing, the organic resin glue has good mechanical structural strength and stable physical and chemical properties, which can ensure the long-term use reliability and display effect stability of the electronic paper display device 100. For example, the support structure 40 can be made of organic resin glue. In addition, the organic resin glue has the advantages of easy processing. In addition to being easy to process itself, it can also be used as a good intermediate product by virtue of its stable physical and chemical properties, facilitating the safe and stable placement of the electronic paste 31 in the filling medium layer 30 through screen printing, coating, drip irrigation and other processes.

[0037] In some embodiments, at least a portion of the support structure 40 can enclose a plurality of microcavities 32 for containing the electronic paste 31. It should be understood that each pixel unit 21 can correspond to one microcavity 32 for containing the electronic paste 31, or can correspond to a plurality of microcavities 32 for containing the electronic paste 31. Those skilled in the art can design according to actual needs, which is not specifically limited here.

[0038] The present application provides a manufacturing method of an electronic paper display device 100. Please refer to Figure 8 As shown in the figure, the manufacturing method of the electronic paper display device 100 can include steps S101 to S104. Figure 8

[0039] S101, providing an encapsulation plate 10 and a driving plate 20.

[0040] The driving plate 20 can form a plurality of pixel units 21. It should be understood that the plurality of pixel units 21 can be arranged in an array with a certain interval, or can be arranged in an array with a certain interval. In electronic logistics labels and other tool products, due to different display product needs, the size, shape and layout of the pixel units 21 can be different from the pixel unit 21 array of traditional e-paper books and other consumer products. Those skilled in the art can design according to actual needs, which is not specifically limited here.

[0041] In some embodiments, the electronic paper display device 100 can be a gray-scale display electronic paper display device 100, so the encapsulation plate 10 can not include a color film 12. The electronic paper display device 100 can also be a color display electronic paper display device 100, so the encapsulation plate 10 needs to include a color film 12 and a leveling layer 13. For example, the color film 12 can be disposed on the encapsulation plate 10 by coating, exposing and developing process to achieve color display effect. Further, the driving plate 20 can be provided with a pixel electrode, and the encapsulation plate 10 can be provided with a common electrode, so as to form a microcavity 32 electronic paper display device 100 pixel display control electric field.

[0042] ​S102, setting a light-shielding matrix on the encapsulation plate 10.

[0043] Specifically, the light-shielding matrix or the like can have a first projection in the thickness direction of the encapsulation plate 10. Due to the matrix structure of the light-shielding matrix, it can be well adapted to the rectangular form of the pixel unit 21, and further adapted to the manufacturing process of most electronic paper display devices 100, thereby reducing the layout, process, and design, trial production cost.

[0044] In some embodiments, the light-shielding layer can be formed first, and the color film 12 can cover a part of the light-shielding layer, and then the flow leveling layer 13 can be arranged, so that the human eye can directly observe the black light-shielding layer, reduce the refraction and color transmission of the color film 12, and improve the color gamut effect of the display. For example, the step of setting the light-shielding matrix on the encapsulation plate 10 can include providing the color film 12; arranging the color film 12 and the light-shielding matrix according to the pixel unit 21; and arranging the flow leveling layer 13 on the color film 12 and the light-shielding matrix. For another example, the color film 12 can be arranged on the encapsulation plate 10 according to the pixel unit 21 to form an array with gaps, and the light-shielding matrix can be arranged according to the gaps, and then the flow leveling layer 13 can be arranged.

[0045] In some embodiments, the flow leveling layer 13 can be arranged on the encapsulation plate 10 first; and then the light-shielding matrix can be arranged around the pixel unit 21 on the flow leveling layer 13. This process implementation scheme almost does not change the production process of the encapsulation plate 10 of the electronic paper display device 100 with color display function, can save the design cost of the production line, maintain the stability of the production line, and improve the product yield. It can also ensure that the existing encapsulation plate 10 scheme can continue to be mass-produced or modularly produced, and improve the production efficiency of the product.

[0046] S103, setting a support matrix on the driving plate 20 or the encapsulation plate 10.

[0047] It should be understood that the support matrix can be arranged on the surface of the flow leveling layer 13, the surface of the color film 12, the surface of the encapsulation plate 10, or the surface of the driving plate 20. By arranging the support matrix directly on the light-shielding matrix, the bonding strength and the alignment accuracy can be improved; by tightly combining the support matrix with the light-shielding matrix through the process of taping and boxing, the adjustment of the production process can be reduced, and a good process yield can be maintained. Specifically, the support matrix can be etched around the pixel unit 21 through a coating, exposure, and development process. Further, the electronic paste 31 can be arranged in the pixel unit 21 through a printing, coating, or drip irrigation process.

[0048] S104, taping and boxing the driving plate 20 and the encapsulation plate 10 to obtain the electronic paper display device 100.

[0049] It should be understood that the support matrix or the like support structure 40 can have a second projection in the thickness direction of the packaging board 10. Specifically, when being attached to a box, the support matrix can be first located between the packaging board 10 and the driving board 20, and the first projection and the second projection at least partially overlap.

[0050] The embodiments of the present application also provide an electronic device, which comprises the electronic paper display device 100 according to any of the embodiments of the present application, or a manufacturing process of the electronic device comprises the manufacturing method of the electronic paper display device 100 according to any of the embodiments of the present application.

[0051] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic paper display device, characterized by comprising: The electronic paper display device comprises: a packaging plate provided with a first electrode; a driving plate formed with a plurality of pixel units, each of the pixel units comprising a thin film transistor and a second electrode, an insulating layer being provided between the thin film transistor and the second electrode, the insulating layer being provided with a communication hole, the second electrode being electrically connected with the thin film transistor at the communication hole; a filling medium layer provided between the packaging plate and the driving plate, the filling medium layer comprising electronic paste; a support structure located between the packaging plate and the driving plate and connected with the packaging plate and the driving plate, the support structure being provided on the periphery of the pixel units; a light shielding structure located between the support structure and the packaging plate, the light shielding structure having a first projection in the thickness direction of the packaging plate, the support structure having a second projection in the thickness direction of the packaging plate, the first projection and the second projection at least partially overlapping.

2. The electronic paper display device according to claim 1, wherein The support structure comprises: a first support portion extending along a first direction of the surface of the packaging plate; a second support portion extending along a second direction of the surface of the packaging plate, the first direction and the second direction being arranged at an angle.

3. The electronic paper display device according to claim 2, wherein The light shielding structure comprises: a first light shielding portion extending along the first direction; a second light shielding portion extending along the second direction; wherein the projection of the first light shielding portion in the thickness direction of the packaging plate and the projection of the first support portion in the thickness direction of the packaging plate at least partially overlap, and / or the projection of the second light shielding portion in the thickness direction of the packaging plate and the projection of the second support portion in the thickness direction of the packaging plate at least partially overlap.

4. The electronic paper display device according to claim 3, wherein The width of the first light shielding portion is greater than or equal to the width of the first support portion; and / or the width of the second light shielding portion is greater than or equal to the width of the second support portion.

5. The electronic paper display device according to claim 1, wherein The packaging plate is further provided with a color film and a leveling layer; wherein the light shielding structure is provided between the leveling layer and the color film, and the leveling layer is provided between the light shielding structure and the support structure; or the light shielding structure is provided between the leveling layer and the support structure, and the color film is provided on the side of the leveling layer away from the light shielding structure.

6. The electronic paper display device according to claim 5, wherein At least a portion of the light shielding structure surrounds the projection area of the pixel units on the packaging plate, and the light shielding structure is provided on the packaging plate; The packaging plate is further provided with a color film and a leveling layer, the color film is provided in the projection area, and the leveling layer is provided between the color film and the support structure and covers at least a portion of the color film and / or the light shielding structure.

7. The electronic paper display device according to claim 1, wherein The material of the light shielding structure comprises at least one of non-transparent organic material and metal; and / or The material of the packaging plate comprises at least one of glass, acrylic plate, polyimide and polyethylene terephthalate; and / or The material of the support structure comprises organic resin glue.

8. The electronic paper display device according to claim 1, wherein At least a part of the support structure encloses a plurality of micro-cavities for accommodating the electronic paste.

9. A method for manufacturing an electronic paper display device, characterized by comprising: The method comprises: A package plate and a driving plate are provided, and the driving plate is formed with a plurality of pixel units; An optical shielding matrix is arranged on the package plate, and the optical shielding structure has a first projection in the thickness direction of the package plate; A support matrix is arranged on the driving plate or the package plate; The support matrix is located between the package plate and the driving plate, the support structure has a second projection in the thickness direction of the package plate, and the first projection and the second projection at least partially overlap, the package plate and the driving plate are attached to form a box, and the electronic paper display device is obtained.

10. An electronic device, comprising: The electronic device comprises the electronic paper display device according to any one of claims 1-8; and / or, the manufacturing process of the electronic device comprises the manufacturing method of the electronic paper display device according to claim 9.

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