Electronic paper display module and electronic paper display device

Abstract

The utility model discloses an electronic paper display module and an electronic paper display device, and relates to the technical field of electronic paper display. The electronic paper display module comprises a substrate, a first electrode and a second electrode, the electronic paper diaphragm is arranged on the substrate; the water blocking film is arranged on the electronic paper diaphragm on one side far away from the substrate; and the AR film layer is at least arranged on one side, far away from the electronic paper diaphragm, of the water blocking film. According to the utility model, the problems that the brightness of the module is reduced in a dark light environment and the impression effect of a user is influenced because the transmittance specification of the existing water-blocking film is greater than or equal to 87% and the electronic paper module adopts a reflective display principle are solved.

Description

Technical Field

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

[0002] With the rapid development of color electronic paper display technology, the application scenarios of electronic paper products have become more diverse. Electronic paper labels are increasingly used in the retail sector, and electronic paper notebooks and study notebooks are favored by the market. Their low-carbon, eye-friendly, portable, and easy-to-use features meet the needs of modern office and education. They are also widely used in consumer electronics and smart home fields.

[0003] Electronic paper displays are also often called "reflective displays." They utilize ambient light sources shining on the electronic paper display screen, which then reflects the light into the viewer's eyes. Currently, the common practice is to optimize the upper water-blocking film to increase transparency and reduce reflection, thereby improving the brightness of the module display and enhancing the user's viewing experience.

[0004] However, existing water-blocking films have a transmittance specification of ≥87%, and electronic paper modules use a reflective display principle. Therefore, there is a problem where the module brightness decreases in low-light environments, affecting the user's viewing experience. Currently, the industry has not yet proposed an effective solution to these problems. Utility Model Content

[0005] Purpose of the utility model: To provide an electronic paper display module and an electronic paper display device, so as to at least solve one of the problems existing in the prior art.

[0006] Technical solution: An electronic paper display module, comprising:

[0007] substrate;

[0008] An electronic paper film is disposed on the substrate;

[0009] A water-blocking membrane is disposed on the electronic paper film on the side away from the substrate; and

[0010] An AR film layer is disposed at least on the water-blocking film on the side away from the electronic paper film;

[0011] Specifically, by providing an AR film layer at least on the outer surface of the water-blocking membrane, the surface reflectivity of the water-blocking membrane is reduced and the transmittance is increased.

[0012] Preferably, the AR membrane layer includes a first AR membrane layer and a second AR membrane layer, wherein the first AR membrane layer and the second AR membrane layer are respectively disposed on both sides of the water-blocking membrane.

[0013] Preferably, the thickness of the AR film is between 200-350 nm.

[0014] Preferably, the AR film layer has one, two, or multiple layers.

[0015] Preferably, the water-blocking membrane comprises: an anti-reflective polyester membrane, an OCA membrane, and a barrier membrane stacked sequentially.

[0016] Preferably, the AR film is either SiO2 or Si2Nb5.

[0017] Preferably, a conductive layer is provided on the side of the substrate near the electronic paper film.

[0018] Preferably, a driver chip and a flexible circuit board are respectively disposed on the conductive layer.

[0019] Preferably, the outer edges of the electronic paper film, the water-blocking film, and the AR film layer are provided with sealant.

[0020] To achieve the above objectives, according to another aspect of this application, an electronic paper display device is also provided.

[0021] The electronic paper display device according to this application includes the electronic paper display module as described above.

[0022] Beneficial effects: In this embodiment, by adding an AR film layer, the reflectivity of the water-blocking film is reduced and the transmittance is increased by setting an AR film layer on at least the outer surface of the water-blocking film. This achieves the purpose of reducing reflectivity and reducing the loss of light entering and exiting, thereby realizing the technical effect of improving brightness and enhancing the user's viewing experience. This solves the technical problem that the transmittance specification of the existing water-blocking film is ≥87%, and the electronic paper module is a reflective display principle. Therefore, the brightness of the module will decrease in dark light environment, which will affect the user's viewing experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the electronic paper display module structure of this utility model; and

[0024] Figure 2 This is a schematic diagram of another electronic paper display module structure of this utility model.

[0025] The attached figures are labeled as follows:

[0026] 10. Substrate;

[0027] 20. Electronic paper film;

[0028] 30. Water-resistant membrane;

[0029] 40. AR film layer; 401. First AR film layer; 402. Second AR film layer;

[0030] 50. Conductive layer;

[0031] 60. Driver chip;

[0032] 70. Flexible circuit board;

[0033] 80. Sealant. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figure 1-2 As shown, this application relates to an electronic paper display module and an electronic paper display device. Figure 1As shown, the electronic paper display module includes: a substrate 10; the substrate 10 refers to a carrier substrate 10, which can achieve a good bearing effect; further, the substrate 10 is a TFT glass substrate 10 or a flexible substrate 10; it can provide the effect of selecting a variety of materials, while also providing good physical properties.

[0039] For example, the TFT (thin-film transistor) glass substrate 10 provides the necessary circuitry to drive the electronic paper pixels, controls the voltage of each pixel, and ensures the display of images and text; the TFT layer controls the movement of particles in the FPL ink film through an electric field; the TFT glass substrate 10 controls the strength and direction of the electric field by installing thin-film transistors at each pixel location.

[0040] The electronic paper film 20 is disposed on the substrate 10; it can achieve good display effect and good assembly effect.

[0041] A water-blocking film 30 is disposed on the electronic paper film 20 on the side away from the substrate 10; it can prevent moisture or water vapor from penetrating, protect the electronic paper film 20 from the influence of a humid environment, and extend its service life.

[0042] AR film layer 40 is disposed on the water-blocking film 30 on the side away from the electronic paper film 20. By disposing of AR film layer 40, the surface reflectivity of water-blocking film 30 can be reduced and the transmittance can be increased, thereby achieving a brighter display effect. AR film can effectively reduce surface reflection of water-blocking film 30, thereby enhancing the readability and display effect of electronic paper.

[0043] Specifically, when using a single-layer AR film 40, the reflectivity can be reduced, and the loss of light entering and exiting can be reduced. The reflectivity of the single-layer AR film 40 is required to be <3%. The transmittance of the water-blocking film 30 increases by 5-10%, and the brightness of the module will also increase by 5-10%, improving the display effect in low-light environments.

[0044] Specifically, by providing an AR film layer 40 at least on the outer surface of the water-blocking film 30, the surface reflectivity of the water-blocking film 30 is reduced and the transmittance is increased. By optimizing the optical properties of the film, the surface of the water-blocking film 30 does not produce excessive reflection, thereby improving the display effect and light transmittance of the device; at the same time, the main function of the AR film layer 40 is to enhance the light transmittance and anti-reflection properties of the film, which can improve the visual effect of the display screen or electronic paper.

[0045] As can be seen from the above description, this application achieves the following technical effects:

[0046] In this embodiment, an AR film layer 40 is added. By setting the AR film layer 40 on at least the outer surface of the water-blocking film 30, the surface reflectivity of the water-blocking film 30 is reduced and the transmittance is increased. This achieves the purpose of reducing reflectivity and reducing the loss of light entering and exiting, thereby realizing the technical effect of improving brightness and enhancing the user's viewing experience. This solves the technical problem that the transmittance specification of the existing water-blocking film 30 is ≥87%, and the electronic paper module is based on the reflective display principle. Therefore, the brightness of the module will decrease in dark light environments, affecting the user's viewing experience.

[0047] like Figure 2 As shown, the AR film layer 40 includes a first AR film layer 401 and a second AR film layer 402, which are respectively disposed on both sides of the water-blocking membrane 30. It can be understood that by disposing of the first AR film layer 401 and the second AR film layer 402 on the upper and lower sides of the water-blocking membrane 30, the anti-reflective and anti-reflective effects are improved, brightness is increased, and the customer's viewing experience is better. Furthermore, the parameters of the two AR film layers can be customized according to the actual customer requirements to achieve the desired effect.

[0048] Furthermore, the thickness of the AR film layer 40 is between 200-350 nm. This ensures good anti-reflective and anti-reflective effects while also allowing for a variety of sizes to be selected, thus enabling flexible use.

[0049] Furthermore, the AR film layer 40 can be a single layer, a double layer, or multiple layers. This allows for a variety of desired effects.

[0050] Specifically, the thickness of a single-layer AR film is generally chosen within half the wavelength (λ / 2) of the incident light. For visible light, the wavelength is approximately between 400 nm and 700 nm, so the thickness of a single-layer film is typically between 200 nm and 350 nm.

[0051] Reflectivity: The reflectivity of a single-layer AR film can be reduced to about 3% (for SiO2 materials). This is because the phase difference between the reflected and transmitted waves causes the reflected light and the incident light to interfere with each other and cancel each other out, thus reducing reflection.

[0052] Transmittance: Through the design of a single-layer AR film, the transmittance can typically be increased by 5%-7%.

[0053] For example, for SiO2 film materials, the optimal film thickness is usually in the range of 200-250nm, which reduces the reflectivity to ≤3% and increases the transmittance by about 5%-7%.

[0054] Double-layer AR film (double-layer stacking)

[0055] The double-layer AR film further optimizes reflectivity and transmittance by stacking two films with different refractive indices (such as SiO2 and TiO2).

[0056] Film design: By selecting materials with different refractive indices (high and low refractive index materials), reflectivity can be significantly reduced. Typically, low refractive index materials (such as SiO2) are used for the outer layer, while high refractive index materials (such as TiO2) are used for the inner layer.

[0057] Reflectivity: The reflectivity of the double-layer AR film can be further reduced to below 1%.

[0058] Transmittance: The increase in transmittance is usually around 8%-10%.

[0059] For example: outer layer: SiO2 (refractive index n≈1.46), inner layer: TiO2 (refractive index n≈2.4), with thicknesses of 100nm-150nm and 50nm-100nm respectively, reflectivity ≤1%, and transmittance increased by about 8%-10%.

[0060] Multilayer AR film (three or more layers)

[0061] Multilayer film design allows for precise control of the thickness of each layer, enabling optimal suppression of reflection and enhancement of transmission for different wavelengths of light.

[0062] Multilayer design: Common multilayer AR film designs include three-layer films, four-layer films, etc., which utilize the superposition of materials with different refractive indices and control the thickness of the film layer by layer to achieve the best optical effect.

[0063] Reflectivity: Multilayer films can reduce reflectivity to below 0.5%, or even close to zero (theoretically, it can reach 0%).

[0064] Transmittance: Transmittance can be increased by 10%-15%.

[0065] For example, a three-layer design: the outer layer is SiO2 (100-150nm), the middle layer is TiO2 (50-100nm), and the inner layer is SiO2 (50-100nm). The reflectivity of the multilayer film can be reduced to below 0.5%, and the transmittance can be increased by about 15%.

[0066] Furthermore, the water-blocking membrane 30 comprises: an anti-reflective polyester film, an OCA film, and a barrier film stacked sequentially. It is understood that this achieves a combination of protection, adhesion, and barrier functions.

[0067] Specifically, anti-reflective polyester film (AG PET film): as a surface film layer, its main functions are anti-reflection, anti-scratch, and enhancing the durability of the film. It is commonly used for screen protection and display protection of electronic products.

[0068] OCA film (Optically Clear Adhesive film): This is typically an optically transparent adhesive film, mainly used for bonding and protection. It is commonly used as an adhesive layer between devices such as displays and touch screens. It can function as a transparent layer while also providing some adhesive properties.

[0069] Barrier membrane: The core component of the water-blocking membrane 30, it is specifically designed to prevent water vapor or liquid penetration. It is usually composed of materials such as metal layers, polyamide (PA), and polyvinyl alcohol (PVOH), and has high water vapor barrier performance.

[0070] Furthermore, the AR film 40 is either SiO2 or Si2Nb5. This allows for the achievement of good optical performance, providing excellent anti-reflection capabilities and enhanced light transmittance.

[0071] Furthermore, a conductive layer 50 is disposed on the side of the substrate 10 near the electronic paper film 20. It is understood that this allows for good conductivity; by applying a voltage, a uniform electric field distribution is formed on its surface, enabling uniform current transmission. Preferably, the conductive layer 50 is ITO.

[0072] Furthermore, a driver chip 60 and a flexible circuit board 70 are respectively disposed on the conductive layer 50. It is understood that by providing the driver chip 60, a good driving control effect can be achieved. By providing the flexible circuit board 70, a good electrical connection effect can be achieved, thereby ensuring a good electrical signal transmission effect.

[0073] Furthermore, the outer edges of the electronic paper film 20, the water-blocking film 30, and the AR film layer 40 are provided with sealant 80. It is understood that by providing sealant 80, i.e., edge sealing adhesive (EC edge sealing adhesive), a good sealing effect can be achieved, thereby improving the service life of the equipment; at the same time, it can also improve the structural strength.

[0074] This application also relates to an electronic paper display device, including the electronic paper display module as described above. The electronic paper display device using the above-described electronic paper display module provided in this embodiment has the same basic principle and technical effects as the above embodiment. For any parts not mentioned in this embodiment, please refer to the corresponding content above.

[0075] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An electronic paper display module, characterized in that, include: base(10); An electronic paper film (20) is disposed on the substrate (10); A water-blocking membrane (30) is disposed on the electronic paper film (20) on the side away from the substrate (10); and An AR film layer (40) is disposed on the water-blocking film (30) on the side away from the electronic paper film (20); The reflectivity of the water-blocking membrane (30) is reduced and the transmittance is increased by providing an AR film layer (40) at least on the outer surface of the water-blocking membrane (30).

2. The electronic paper display module according to claim 1, characterized in that, The AR membrane layer (40) includes a first AR membrane layer (401) and a second AR membrane layer (402), wherein the first AR membrane layer (401) and the second AR membrane layer (402) are respectively disposed on both sides of the water-blocking membrane (30).

3. The electronic paper display module according to claim 1, characterized in that, The thickness of the AR film (40) is between 200-350 nm.

4. The electronic paper display module according to claim 1, characterized in that, The AR film layer (40) can be a single layer, a double layer, or a multi-layer layer.

5. The electronic paper display module according to claim 1, characterized in that, The water-blocking membrane (30) comprises: an anti-reflective polyester membrane, an OCA membrane, and a barrier membrane stacked sequentially.

6. The electronic paper display module according to claim 1, characterized in that, The AR film (40) is either SiO2 or Si2Nb5.

7. The electronic paper display module according to claim 1, characterized in that, A conductive layer (50) is provided on the side of the substrate (10) near the electronic paper film (20).

8. The electronic paper display module according to claim 7, characterized in that, A driving chip (60) and a flexible circuit board (70) are respectively disposed on the conductive layer (50).

9. The electronic paper display module according to claim 1, characterized in that, The outer edges of the electronic paper film (20), the water-blocking film (30), and the AR film layer (40) are provided with sealant (80).

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

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