An electronic paper display device and electronic equipment

Abstract

This application provides an electronic paper display device and an electronic device, relating to the field of display technology. The electronic paper display device includes: a top substrate and a bottom substrate; an electrophoretic layer disposed between the top substrate and the bottom substrate; and a partition layer disposed between the top substrate and the bottom substrate. The partition layer includes a plurality of first partition walls and a plurality of second partition walls, which are staggered to divide the electrophoretic layer into a plurality of receiving portions. Each first partition wall has a first electrode disposed on two opposite sides, and each second partition wall has a second electrode disposed on two opposite sides, the second electrodes forming an inclined working surface. This application achieves a dual-image display effect on the electronic paper screen.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to an electronic paper display device and electronic equipment. Background Technology

[0002] Electronic paper displays have gradually become an important type of display product in our lives. The core principle is reflective display and bistable characteristics. By simulating the visual and physical characteristics of paper, they achieve low power consumption and eye-friendly display.

[0003] However, in the current technology, whether it is black and white electronic paper or color electronic paper, only one image can be displayed at a time. Especially for the electronic price tag and advertising industry, the more information displayed, the easier it is to attract customers. Utility Model Content

[0004] In view of this, this application provides an electronic paper display device and an electronic device, which aims to overcome at least one of the above-mentioned defects.

[0005] This application provides an electronic paper display device, comprising: a top substrate and a bottom substrate; an electrophoretic layer disposed between the top substrate and the bottom substrate; and a partition layer disposed between the top substrate and the bottom substrate. The partition layer includes a plurality of first partition walls and a plurality of second partition walls, the first partition walls and the second partition walls being alternately arranged to divide the electrophoretic layer into a plurality of receiving portions. Each first partition wall has a first electrode disposed on two opposite sides, and each second partition wall has a second electrode disposed on two opposite sides, the second electrodes forming an inclined working surface.

[0006] Preferably, the inclined working surface of the second electrode faces the corresponding receiving portion.

[0007] Preferably, the electrophoretic layer is filled with electrophoretic solution and electrophoretic particles.

[0008] Preferably, the electrophoretic particles include a first color particle with a positive charge and a second color particle with a negative charge, the first electrode is used to apply a first voltage to adsorb one of the first color particle and the second color particle, and the second electrode is used to apply a second voltage to adsorb the other of the first color particle and the second color particle.

[0009] Preferably, the second electrode is in the shape of a triangular prism.

[0010] Preferably, the tilt angle of the second electrode matches the height of the second partition wall.

[0011] Preferably, the tilt angle of the second electrode matches a preset viewing angle.

[0012] Preferably, the first electrode is disposed on the side of the second partition wall.

[0013] Preferably, each receiving portion has the same volume.

[0014] The first aspect of this application provides an electronic device, including the electronic paper display device described in the first aspect.

[0015] This application provides an electronic paper display device and an electronic device, relating to the field of display technology. The electronic paper display device includes: a top substrate and a bottom substrate; an electrophoretic layer disposed between the top substrate and the bottom substrate; and a partition layer disposed between the top substrate and the bottom substrate. The partition layer includes a plurality of first partition walls and a plurality of second partition walls, which are staggered to divide the electrophoretic layer into a plurality of receiving portions. Each first partition wall has a first electrode disposed on two opposite sides, and each second partition wall has a second electrode disposed on two opposite sides, the second electrodes forming an inclined working surface. This application achieves a dual-image display effect on a single screen.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 One of the cross-sectional schematic diagrams of the electronic paper display device provided in the embodiments of this application is shown; Figure 2 This illustration shows one of the cross-sectional schematic diagrams of a display unit of the electronic paper display device provided in an embodiment of this application; Figure 3 This is a second schematic cross-sectional view of a display unit of the electronic paper display device provided in an embodiment of this application; Figure 4 This is a second schematic cross-sectional view of the electronic paper display device provided in an embodiment of this application.

[0019] Reference numerals: 101-Top substrate; 102-Bottom substrate; 201-First partition wall; 202-Second partition wall; 301-First electrode; 302-Second electrode; 401-First color particle; 402-Second color particle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0022] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0023] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0024] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0025] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0026] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0027] For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to that other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Research has found that the core principle of electronic paper (ePaper) is reflective display and bistable characteristics, which achieve low power consumption and eye-friendly display by simulating the visual and physical properties of paper.

[0031] Existing electronic paper uses microcapsule electrophoresis technology. Electronic paper consists of millions of microcapsules, each containing black and white particles (two-color system) or more colored particles (three-color / four-color system) with positive / negative charges, suspended in a transparent liquid. When an electric field is applied, the charged particles move to the top of the capsule according to their polarity, forming text or images (e.g., black particles carry a positive charge and float when exposed to a negative electric field). After the image changes, the particle positions remain fixed, maintaining the display without continuous power supply, achieving "power-off continue." It has no backlight, relies on ambient light reflection for imaging, has no blue light, is flicker-free, and is clearly visible in sunlight.

[0032] However, traditional e-paper technology has an inherent limitation: the displayed content is identical for all viewers from all perspectives. This limits its capacity and efficiency in displaying information within a limited display area.

[0033] For example, in retail scenarios, an electronic shelf label typically only displays the price and product name to the customer. If store clerks need to view information such as inventory, batch numbers, or costs, additional equipment or operations are required, which is very inconvenient. Similarly, in digital billboard applications, if different advertising content can be displayed simultaneously to audiences in different directions on a single screen, the efficiency of information delivery and space utilization will be multiplied.

[0034] Therefore, this application provides an electronic paper display device and an electronic device, which aims to overcome at least one of the above-mentioned defects.

[0035] Example 1: like Figures 1-3 As shown, this application provides an electronic paper display device, including: a top substrate 101, a bottom substrate 102, an electrophoretic layer, and a partition layer.

[0036] Specifically, the electrophoretic layer is disposed between the top substrate 101 and the bottom substrate 102. The electrophoretic layer is filled with electrophoretic liquid and electrophoretic particles. The electrophoretic particles include positively charged first color particles 401 and negatively charged second color particles 402, which are suspended in the electrophoretic liquid.

[0037] A partition layer is disposed between the top substrate 101 and the bottom substrate 102. The partition layer includes a plurality of first partition walls 201 and a plurality of second partition walls 202. The first partition walls 201 and the second partition walls 202 are arranged alternately to divide the electrophoretic layer into a plurality of receiving portions.

[0038] In a preferred embodiment, each receiving part has the same volume, and a first electrode 301 is provided on each of the two opposite sides of each first partition wall 201, and a second electrode 302 is provided on each of the two opposite sides of each second partition wall 202. The second electrode 302 has an inclined working plane.

[0039] For example, such as Figure 2 and Figure 3 As shown, this is a display unit of an electronic paper display device. The first color particle 401 is a black particle, and the second color particle 402 is a white particle. When a negative voltage is applied to the first electrode 301 and a positive voltage is applied to the second electrode 302, the positively charged black particles are attracted to the first electrode 301 side, while the negatively charged white particles are attracted to the second electrode 302 side, thereby forming black and white display areas on both sides respectively. By reversing the polarity of the electric field, the black and white display state can be switched.

[0040] In a preferred embodiment of this application, the second electrode 302 is a prism-shaped structure with a triangular cross-section. The angle of its inclined surface can be matched with the height of the second partition wall 202 and the preset target viewing angle to achieve the best dual-view separation effect.

[0041] In a preferred embodiment, the first electrode 301 may be a sheet-like structure that fully covers the side of the partition wall, or it may be arranged at the corner of the second partition wall 202.

[0042] like Figure 4 As shown, when a driving voltage is applied to the first electrode 301 and the second electrode 302, the first electrode 301 and the second electrode 302 will generate a highly directional electric field, which can drive the electrophoretic particles to the working surface of the corresponding electrode.

[0043] By independently controlling the polarity of electrodes at different positions, a specific image can be displayed on the inclined working surface of the second electrode 302 in each receiving part. Ultimately, from the left perspective, the observer mainly sees the image controlled by the left-leaning inclined array of the second electrode 302, while from the right perspective, the observer mainly sees another image controlled by the right-leaning inclined array of the second electrode 302, thus achieving a dual-image display effect on one screen.

[0044] As an example, when displaying a black and white image, the goal is to present black from the left perspective and white from the right perspective.

[0045] First, a positive voltage (+) is applied to the second electrode 302 facing the right-side receiving portion (e.g., with the inclined surface facing right), and the resulting electric field has a rightward Ex component. Under the action of this electric field, negatively charged white particles are attracted by the positive electrode and, driven by the Ex component, gather at the right corner of the receiving portion.

[0046] At this point, if viewed from the left side, the white particle cluster in the right corner is physically blocked by the partition wall on the right, and the field of vision mainly covers the middle and left areas of the housing; since the white particles have been driven away, the area shows black particles or background color, so the left-side perspective perceives it as black.

[0047] Simultaneously, to complete the display from the right perspective, a negative voltage (-) is applied to the first electrode 301 (or corresponding electrode) facing the left-side receiving portion, causing the positively charged black particles to be attracted and aggregated in the left-side region. When viewed from the right-side perspective, the black area on the left is obscured, and the white particles concentrated in the right corner are precisely at the center of the field of view, thus the white is clearly visible from the right perspective.

[0048] Therefore, different colors are displayed in the left and right areas within the same sub-pixel unit. When thousands of such display units work together, they combine to generate two complete and distinct images. Once the particles are positioned, the voltage can be removed. Thanks to the bistable characteristics of electrophoretic particles, the displayed image can be maintained for a long time in a zero-power state.

[0049] In a preferred embodiment of this application, the second electrode 302 is a prism-shaped structure with a triangular cross-section. The angle of its inclined surface can be matched with the height of the second partition wall 202 and the preset target viewing angle to achieve the best dual-view separation effect. The first electrode 301 can be a sheet-like structure that fully covers the side of the partition wall, or it can be arranged at the corner of the second partition wall 202.

[0050] In another preferred embodiment of this application, each accommodating part has the same volume. In the micro-nano scale display structure, each accommodating part is an independent "micro-display unit". The uniformity of its volume directly determines the uniformity of several key performance parameters. It ensures that the number density of electrophoretic particles in each unit is basically consistent, which is a prerequisite for achieving uniform brightness of the entire screen, thereby ensuring the good display effect of the electronic paper display device.

[0051] Compared with the prior art, this application has the following advantages: This application doubles the effective information carrying capacity compared to traditional electronic paper display devices. This enables "one screen, dual information" for applications with limited display area but high information density requirements (such as electronic price tags and digital signage). Furthermore, the electronic paper display device of this application is not only suitable for traditional black-and-white dual-particle electrophoresis systems, but can also be extended to advanced color electronic paper based on four-color or three-color particles. By independently controlling the distribution of different color particles in the left and right partitions, bidirectional color display can be easily achieved with low technology migration costs. This "one screen, two images" display capability, by providing richer and more accurate information within limited resources, not only significantly improves the efficiency of information transmission but also brings users a more interactive and attractive new experience.

[0052] Example 2: This application also provides an electronic device, including an electronic paper display device as described in Embodiment 1.

[0053] As an example, the electronic device of this application can be applied to electronic shelf labels, smart notebooks, double-sided information display boards, public transportation information displays, industrial dashboards, or smart home control panels, etc.

[0054] Specifically, the aforementioned device can achieve spatial reuse and a doubling of information capacity by integrating the electronic device of this application, realizing "dual-view on one screen" so that observers in different positions can see completely different customized information content on the same physical screen.

[0055] For example, in the application of electronic shelf labels, the left-hand view facing the customer can clearly and statically display product names, prices, and promotional information, while the right-hand view facing the store staff can display internal management information such as inventory quantity, storage location code, cost price, and replenishment reminders. The information on both sides is controlled independently and does not interfere with each other.

[0056] Alternatively, in spaces such as shopping mall passages, subway corridors, and airport waiting halls, traditional double-sided billboards can be replaced by single-piece equipment. It can display different advertising content to two-way pedestrian traffic, making advertising more precise and doubling space utilization and media value.

[0057] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. An electronic paper display device, characterized in that, include: Top substrate and bottom substrate; An electrophoretic layer is disposed between the top substrate and the bottom substrate; A partition layer is disposed between the top substrate and the bottom substrate. The partition layer includes a plurality of first partition walls and a plurality of second partition walls. The first partition walls and the second partition walls are staggered to divide the electrophoretic layer into a plurality of receiving portions. A first electrode is disposed on two opposite sides of each first partition wall, and a second electrode is disposed on two opposite sides of each second partition wall. The second electrode forms an inclined working surface.

2. The electronic paper display device according to claim 1, characterized in that, The inclined working surface of the second electrode faces the corresponding receiving part.

3. The electronic paper display device according to claim 1, characterized in that, The electrophoretic layer is filled with electrophoretic solution and electrophoretic particles.

4. The electronic paper display device according to claim 3, characterized in that, The electrophoretic particles include positively charged first-color particles and negatively charged second-color particles. The first electrode is used to apply a first voltage to adsorb one of the first color particle and the second color particle, and the second electrode is used to apply a second voltage to adsorb the other of the first color particle and the second color particle.

5. The electronic paper display device according to claim 1, characterized in that, The second electrode is in the shape of a triangular prism.

6. The electronic paper display device according to claim 1, characterized in that, The tilt angle of the second electrode matches the height of the second partition wall.

7. The electronic paper display device according to claim 1, characterized in that, The tilt angle of the second electrode matches the preset viewing angle.

8. The electronic paper display device according to claim 1, characterized in that, The first electrode is disposed on the side of the second partition wall.

9. The electronic paper display device according to claim 1, characterized in that, Each compartment has the same volume.

10. An electronic device, characterized in that, Includes the electronic paper display device according to any one of claims 1-9.

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