Electronic paper display device

Abstract

The application belongs to the technical field of display and particularly relates to an electronic paper display device, which comprises a first substrate, a second substrate arranged opposite to the first substrate, display micro-cups supported between the first substrate and the second substrate, the display micro-cups being arranged in an array in the display area, a deformation support structure supported between the first substrate and the second substrate and arranged between adjacent display micro-cups, the deformation support structure comprising support columns and at least one group of magnetic pole pairs, wherein the support columns are filled with magnetorheological material, and each group of the magnetic pole pairs is arranged on opposite sides of the support columns and configured to control magnetic particles in the magnetorheological material to form a target support body according to a deformation amount of the electronic paper display device. The electronic paper display device provided by the application can improve the stability of display.

Description

Technical Field

[0001] This disclosure belongs to the field of display technology, and specifically relates to an electronic paper display device. Background Technology

[0002] Flexible electronic paper has more application scenarios than rigid electronic paper. However, due to the microcup structure of the electronic paper film itself, the stability of the electronic paper display structure is insufficient. When the screen is deformed by force in any direction, the internal structure of the display area will be deformed to different degrees at different positions, resulting in differences in the actual degree of deformation within the surface and a decrease in the overall structural stability.

[0003] Therefore, improving the stability of flexible electronic paper is an urgent problem to be solved. Summary of the Invention

[0004] This application provides an electronic display paper device that solves the problem of poor stability of flexible electronic paper.

[0005] This application provides an electronic paper display device having a display area. The electronic paper display device includes: a first substrate; a second substrate disposed opposite to the first substrate; display microcuplets supported between the first substrate and the second substrate, wherein multiple display microcuplets are arranged in an array in the display area; and a deformation support structure supported between the first substrate and the second substrate and disposed between adjacent display microcuplets. The deformation support structure includes support pillars and at least one set of magnetic pole pairs. The support pillars are filled with magnetorheological material, and each set of magnetic pole pairs is disposed on opposite sides of the support pillar, configured to control the magnetic particles in the magnetorheological material to form a target support body according to the deformation of the electronic paper display device.

[0006] Optionally, the at least one set of magnetic pole pairs includes: at least one set of horizontal magnetic pole pairs, respectively disposed on opposite sides of the support column in the horizontal direction, configured to control the magnetic particles in the magnetorheological material to form a target support body according to the horizontal deformation of the electronic paper display device.

[0007] Optionally, multiple sets of horizontal magnetic pole pairs are provided, and the multiple sets of horizontal magnetic pole pairs are spaced apart along the vertical direction.

[0008] Optionally, the at least one set of magnetic pole pairs includes: at least one set of vertical magnetic pole pairs, respectively disposed on opposite sides of the support column in the vertical direction, configured to control the magnetic particles in the magnetorheological material to form a target support body according to the vertical deformation of the electronic paper display device.

[0009] Optionally, multiple sets of vertical magnetic pole pairs are provided, and the multiple sets of vertical magnetic pole pairs are spaced apart along the horizontal direction.

[0010] Optionally, the electronic paper display device further includes a non-display area located at the edge of the display area; wherein, the electronic paper display device further includes a deformation detection unit located in the non-display area and disposed inside the first substrate and the second substrate, the deformation detection unit being connected to the magnetic pole pair, and the deformation detection unit being configured to detect the deformation of the electronic paper display device.

[0011] Optionally, when the at least one set of magnetic pole pairs includes a vertical magnetic pole pair, the deformation detection unit includes: a light emitting module disposed on the inner side of the first substrate and configured to emit a probe light; a light reflecting module disposed on the inner side of the second substrate and configured to reflect the probe light emitted by the light emitting module to obtain reflected light; a light receiving module disposed on the inner side of the first substrate and configured to receive the probe light reflected by the light reflecting module; a detection module connected to the light emitting module and the light receiving module and configured to detect the time interval between the reflected light received by the light receiving module and the probe light emitted by the light emitting module; and a control module connected to the detection module and the vertical magnetic pole pair and configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module.

[0012] Optionally, the orthographic projection of the light reflection module on the first substrate covers both the light emission module and the light receiving module.

[0013] Optionally, when the at least one set of magnetic pole pairs includes a horizontal magnetic pole pair, the deformation detection unit further includes a light absorption module disposed on at least one side of the light reflection module in the horizontal direction. The light absorption module is configured to absorb the probe light emitted by the light emission module when the electronic paper display device undergoes horizontal deformation. The detection module is also configured to detect the light intensity difference between the reflected light received by the light receiving module and the probe light emitted by the light emission module. The control module is also connected to the horizontal magnetic pole pair and is configured to determine the horizontal deformation based on the light intensity difference detected by the detection module.

[0014] Optionally, when the at least one set of magnetic pole pairs includes a vertical magnetic pole pair, the deformation detection unit includes: a light emitting module disposed on the inner side of the first substrate and configured to emit a probe light; a light receiving module disposed on the inner side of the second substrate and configured to receive the probe light emitted by the light emitting module; a detection module connected to the light emitting module and the light receiving module and configured to detect the time interval between the probe light received by the light receiving module and the probe light emitted by the light emitting module; and a control module connected to the detection module and the vertical magnetic pole pair, the control module being configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module.

[0015] The technical solution provided in this application has at least the following beneficial effects:

[0016] This application utilizes a deformation support structure placed between adjacent display microcuplets. By incorporating this structure into the existing structural properties of the electronic paper display device, deformation support can be achieved without altering the actual arrangement of the microcuplets, ensuring the display effect of the display area and saving costs. When the electronic paper display device deforms, at least one set of magnetic pole pairs is controlled to generate a target magnetic field based on the deformation. Under the action of the target magnetic field, the magnetic particles of the magnetorheological material form a target support body. This target support body supports the display area, applying a supporting force to the deformed area, thereby restoring the deformed region, ensuring the display effect of the electronic paper display device, and improving the stability of the electronic paper display device. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 A schematic diagram of the structure of an electronic paper display device provided in an embodiment of this application is shown.

[0019] Figure 2 A structural diagram of a magnetorheological material provided in an embodiment of this application is shown.

[0020] Figure 3 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown.

[0021] Figure 4 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown.

[0022] Figure 5 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown.

[0023] Figure 6 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown.

[0024] Explanation of reference numerals in the attached figures:

[0025] A. Display area; B. Non-display area; 110. First substrate; 120. Second substrate; 200. Display microcup; 210. White charged particles; 310. Support column; 320. Magnetic pole pair; 330. Magnetorheological material; 331. Magnetic particles; 332. Base liquid; 333. Non-woven fiber; 334. Magnetic field direction; 410. Light emitting module; 420. Light reflecting module; 430. Light receiving module; 440. Detection module; 450. Control module; 460. Light absorption module. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0027] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0028] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0029] The instability of flexible electronic paper structures mainly stems from the instability of their materials and structures during mechanical deformation (such as bending and folding). These phenomena affect the performance and reliability of the devices. Types of instability include: surface wrinkling instability, buckling instability and interface debonding, and overall structural instability.

[0030] Surface wrinkling instability: Flexible electronic paper typically employs a hard-soft bilayer or multilayer structure (such as a hard conductive layer combined with a soft substrate). During deformation, the hard film layer may become unstable due to pressure, resulting in surface wrinkles. The critical strain for these wrinkles is very small, and even slight compression can trigger them, leading to uneven device surfaces and affecting electronic performance (such as conductivity or optical transparency).

[0031] Buckling instability and interface debonding: When a structure is subjected to compressive loads, buckling instability may occur, which manifests as bending of the thin film layer or interface debonding. This can lead to circular, straight-edge or "telephone line" debonding morphologies, further reducing the mechanical strength and electrical connection stability of the device.

[0032] Overall structural instability: Under extreme deformation, flexible electronic paper may collapse or undergo abrupt shape changes due to stress concentration (such as permanent damage to the bending area).

[0033] Figure 1 A schematic diagram of an electronic paper display device according to an embodiment of this application is shown. Please refer to [link / reference]. Figure 1 As shown, the electronic paper display device has a display area A and includes: a first substrate 110, a second substrate 120, a display microcup 200 and a deformation support structure; the second substrate 120 is disposed opposite to the first substrate 110.

[0034] The display microcup 200 is supported between the first substrate 110 and the second substrate 120. Multiple display microcups 200 are arranged in an array in the display area A. For example, the display microcup 200 can be an electrophoretic E-link microcapsule, an electrophoretic SiPix microcup, a cholesteric liquid crystal, a dual-color rotating ball, a microcup, or a physical or chemical color-changing technology. The first substrate 110 and the second substrate 120 can be polyethylene terephthalate (PET) substrates or polyimide (PI) substrates, etc.

[0035] When the display microcup 200 is a SiPix microcup, it encapsulates white charged particles 210 and a colored insulating liquid. When the colored insulating liquid is black, the direction of the electric field is switched by electrodes to control the up-and-down movement of the white charged particles 210 within the display microcup 200. When an electric field opposite in charge to the white charged particles 210 is applied to the electrodes, the white charged particles 210 are attracted to the top of the display microcup 200, close to the display surface, and are displayed as white. When an electric field with the same charge as the white charged particles 210 is applied to the electrodes, the white charged particles 210 are repelled to the bottom of the display microcup and hidden, and the display surface displays the color of the colored liquid below. By controlling the intensity and duration of the electric field applied to the electrodes, the number of white particles remaining at the top of the microcup can be controlled, thereby achieving different shades of grayscale effects. All display microcups 200 have the same height and width dimensions. Whether segmented electrodes or a TFT substrate are used for the driving electrodes depends on the application.

[0036] A deformation support structure is provided between the first substrate 110 and the second substrate 120, and is disposed between adjacent display microcup 200s. The deformation support structure includes support pillars 310 and at least one set of magnetic pole pairs 320. By placing the deformation support structure between adjacent display microcup 200s, the deformation can be supported without changing the arrangement of the display microcup 200s, thus ensuring the display effect of display area A and saving costs.

[0037] The support column 310 is filled with magnetorheological material 330, and each pair of magnetic poles 320 is located on the opposite side of the support column 310. It is configured to control the magnetic particles 331 in the magnetorheological material 330 to form a target support according to the deformation of the electronic paper display device.

[0038] Figure 2 A structural diagram of a magnetorheological material provided in an embodiment of this application is shown. Please refer to [link / reference]. Figure 2 As shown, the magnetorheological material 330 can be a magnetorheological fluid (MRF), including: magnetic particles 331, a base fluid 332, nonwoven fibers 333, and additives, etc. The magnetic particles 331 can be carbon-based iron powder, etc., and the base fluid 332 can be silicone oil, etc. In the absence of a magnetic field, the magnetic particles 331 are randomly dispersed in the base fluid 332, and the material is a low-viscosity fluid. Under shear stress, the particles easily slide, and the damping force is provided by the viscosity of the base fluid 332, resulting in a relatively small damping force. Under the influence of a target magnetic field, for example, when the target magnetic field direction 334 is vertical, the target magnetic field induces the magnetic particles 331 to move along the magnetic field direction 334, forming a target support. The target support is vertically supported and can be a chain-like, columnar, or other shape with supporting force.

[0039] The strength of the target magnetic field determines the number, density, and strength of the magnetic particles 331 in the target support, thereby linearly or nonlinearly adjusting the magnitude of the supporting force. The entire process can achieve a millisecond-level response (typically less than 10 ms) without hysteresis, and the magnetorheological material 330 can be recycled. When the magnetic particles 331 are arranged in the target support, the shear modulus and damping coefficient of the material can be improved, achieving coordinated control of stiffness and damping.

[0040] When the electronic paper display device deforms, at least one set of magnetic pole pairs 320 is controlled to generate a target magnetic field according to the deformation. Under the action of the target magnetic field, the magnetic particles 331 of the magnetorheological material 330 form a target support. The target support supports the display area A, thereby applying a supporting force to the deformed part, which can restore the deformed area, ensure the display effect of the electronic paper display device, and improve the stability of the electronic paper display device.

[0041] Please see Figure 1 As shown, at least one set of magnetic pole pairs 320 includes: at least one set of horizontal magnetic pole pairs 321, which are disposed on opposite sides of the support column 310 in the horizontal direction, and are configured to control the magnetic particles 331 in the magnetorheological material 330 to form a target support body according to the horizontal deformation of the electronic paper display device.

[0042] In some embodiments, by providing horizontal magnetic pole pairs 321, when horizontal deformation of the electronic paper display device is detected, at least one set of horizontal magnetic pole pairs 321 can be controlled to generate a horizontal magnetic field to restore the horizontal deformation. When there is a set of horizontal magnetic pole pairs 321, the horizontal magnetic pole pairs 321 can be configured to cover the horizontal region of the support. For example, when only horizontal deformation occurs, the horizontal magnetic pole pairs 321 will generate a horizontal magnetic field, and the target support formed by the magnetic particles 331 in the magnetorheological material 330 is horizontal, thereby supporting the horizontal deformation.

[0043] Please see Figure 1 As shown, at least one set of magnetic pole pairs 320 further includes at least one set of vertical magnetic pole pairs 322, which are disposed on opposite sides of the support column 310 in the vertical direction and are configured to control the magnetic particles 331 in the magnetorheological material 330 to form a target support body according to the vertical deformation of the electronic paper display device.

[0044] In some embodiments, by setting vertical magnetic pole pairs 322, when vertical deformation of the electronic paper display device is detected, at least one set of vertical magnetic pole pairs 322 can be controlled to generate a vertical magnetic field to restore the vertical deformation. When there is a set of vertical magnetic pole pairs 322, the vertical magnetic pole pairs 322 can be configured to cover the vertical region of the support. For example, when only vertical deformation occurs, the vertical magnetic pole pairs 322 will generate a vertical magnetic field, and the target support formed by the magnetic particles 331 in the magnetorheological material 330 is vertical, thereby supporting the vertical deformation.

[0045] In some embodiments, the deformation includes horizontal deformation and vertical deformation. If horizontal deformation is detected simultaneously, the horizontal magnetic pole pair 321 is controlled to generate a horizontal magnetic field according to the horizontal deformation, and the vertical magnetic pole pair 322 is controlled to generate a vertical magnetic field according to the vertical deformation. The magnetic particles 331 in the magnetic flow edge material will be simultaneously subjected to the horizontal and vertical magnetic fields to form a target support. The target support is inclined, and the supporting force generated by the target support will be decomposed into horizontal and vertical directions, thereby realizing the restoration of the horizontal and vertical deformation of the display area A.

[0046] Figure 3 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown. Please refer to [link / reference]. Figure 3 As shown, there are multiple sets of horizontal magnetic pole pairs 321, and these multiple sets of horizontal magnetic pole pairs 321 are spaced apart along the vertical direction.

[0047] In some embodiments, multiple horizontal magnetic pole pairs 321 can be configured and spaced apart vertically. Each horizontal magnetic pole pair 321 can be controlled to generate a horizontal magnetic field, thereby forming multiple target supports to support the generated horizontal deformation. For example, when there are two horizontal magnetic pole pairs, the two magnetic pole pairs 320 can be respectively positioned near the first substrate 110 and the second substrate 120.

[0048] Figure 4 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown. Please refer to [link / reference]. Figure 4 As shown, there are multiple sets of vertical magnetic pole pairs 322, and these multiple sets of vertical magnetic pole pairs 322 are spaced apart along the horizontal direction.

[0049] In some embodiments, the vertical magnetic pole pairs 322 can be set into multiple groups, and the multiple groups of vertical magnetic pole pairs 322 can be spaced apart in the horizontal direction. Each group of horizontal magnetic pole pairs 321 can be controlled to generate a vertical magnetic field, thereby forming multiple target supports to support the generated vertical deformation.

[0050] By setting multiple sets of horizontal magnetic pole pairs 321 or vertical magnetic pole pairs 322, multiple target supports can be formed accordingly, and the material of magnetic particles 331 in magnetorheological material 330 can be reduced. Compared with setting only one set of magnetic pole pairs 320 to cover the entire horizontal or vertical area of ​​the support column 310, setting multiple sets of magnetic pole pairs 320 consumes less power. While ensuring the support effect, it can save the cost of magnetorheological material 330 and save power consumption.

[0051] Figure 5 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown. Please refer to [link / reference]. Figure 5 As shown, the electronic paper display device also has a non-display area B, located at the edge of the display area A; wherein, the electronic paper display device further includes a deformation detection unit, which is located in the non-display area B and disposed inside the first substrate 110 and the second substrate 120. The deformation detection unit is connected to the magnetic pole pair 320 and is configured to detect the deformation of the electronic paper display device.

[0052] For example, by setting a deformation detection unit in the non-display area B of the electronic paper display device, and with the deformation detection unit located at the edge of the display area A, the deformation of the electronic display paper can be accurately detected to determine the magnitude of the magnetic field generated by the control magnetic pole pair 320.

[0053] Please see Figure 5 As shown, when at least one set of magnetic pole pairs 320 includes a vertical magnetic pole pair 322, the deformation detection unit includes: a light emitting module 410, a light reflecting module 420, a light receiving module 430, a detection module 440, and a control module 450. The light emitting module 410 is disposed inside the first substrate 110 and is configured to emit a detection light beam; the light reflecting module 420 is disposed inside the second substrate 120 and is configured to reflect the detection light beam emitted by the light emitting module 410 to obtain a reflected light beam; the light receiving module 430 is disposed inside the second substrate 120. Inside the first substrate 110, a detection module 440 is configured to receive the probe light reflected by the light reflection module 420. A detection module 440, connected to the light emitting module 410 and the light receiving module 430, is configured to detect the time interval between the reflected light received by the light receiving module 430 and the probe light emitted by the light emitting module 410. A control module 450, connected to the detection module 440 and the vertical magnetic pole pair 322, is configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module 440. The orthographic projection of the light reflection module 420 onto the first substrate 110 covers the light emitting module 410 and the light receiving module 430.

[0054] In some embodiments, a detection light is emitted by the light emitting module 410. Since the light reflecting module 420 is located on the opposite side of the light emitting module 410, the detection light emitted by the light emitting module 410 can be reflected to obtain a reflected light. The light receiving module 430 is located at the same location as the light emitting module 410 and can receive the reflected light from the light emitting module 410. The detection module 440 can detect the time when the light emitting module 410 emits the detection light and the time when the light receiving module 430 receives the reflected light. Thus, the time interval between the reflected light received by the light receiving module 430 and the detection light emitted by the light emitting module 410 can be calculated. When the time interval decreases compared to the first preset time interval threshold, it indicates that a vertical deformation has occurred. The magnitude of the vertical deformation can be determined based on the difference between the time interval and the first preset time interval to determine the degree of vertical deformation. Thus, the magnitude of the magnetic field generated by the vertical magnetic pole pair 322 can be determined based on the vertical deformation.

[0055] Please see Figure 5 As shown, when at least one set of magnetic pole pairs 320 includes a horizontal magnetic pole pair 321, the deformation detection unit further includes: a light absorption module 460, which is disposed on at least one side of the light reflection module 420 in the horizontal direction, and is configured to absorb the detection light emitted by the light emission module 410 when the electronic paper display device undergoes horizontal deformation; the detection module 440 is further configured to detect the light intensity difference between the reflected light received by the light receiving module 430 and the detection light emitted by the light emission module 410; and the control module 450 is further connected to the horizontal magnetic pole pair 321, and is configured to determine the horizontal deformation based on the light intensity difference detected by the detection module 440.

[0056] In some embodiments, when horizontal deformation occurs, the light emitting module 410, the light receiving module 430, or the light reflecting module 420 will shift, causing part or all of the detection light emitted by the light emitting module 410 to shift to the light absorption module 460, and the reflected light reflected by the light reflecting module 420 will decrease, thereby weakening the intensity of the reflected light received by the light receiving module 430. The detection module 440 can also detect the intensity of the detection light emitted by the light emitting module 410 and the intensity of the reflected light received by the light receiving module 430, and can calculate the intensity difference between the detection light and the reflected light. If the intensity difference is greater than a preset intensity threshold, it indicates that horizontal deformation has occurred, and the degree of horizontal deformation can be determined according to the magnitude of the intensity difference, thereby determining the magnitude of the magnetic field generated by the horizontal magnetic pole pair 321 according to the horizontal deformation. It should be noted that the light emitting module 410 can be an LED light-emitting module, the light receiving module 430 can be a device that receives light, such as a circuit containing a photoresistor, etc., the light reflecting module 420 can be set at the driving backlight module end, and the light reflecting module 420 can be a reflector, etc., and the light receiving module 430 and the light absorbing module 460 can be set at the electronic paper film end. The detection module is a device with a timing function that can collect light intensity. For example, the detection module includes a timer and a light sensor, etc. The timer is used to detect the time when the light receiving module receives light, and the light sensor is used to detect the light intensity of the light receiving device. The control module can be a logic control circuit or a programmable chip, etc.

[0057] Figure 6 A schematic diagram of another electronic paper display device provided in an embodiment of this application is shown. Please refer to [link / reference]. Figure 6 As shown, when at least one set of magnetic pole pairs 320 includes a vertical magnetic pole pair 322, the deformation detection unit includes: a light emitting module 410, a light receiving module 430, a detection module 440, and a control module 450. The light emitting module 410 is disposed inside the first substrate 110 and configured to emit a probe light. The light receiving module 430 is disposed inside the second substrate 120 and configured to receive the probe light emitted by the light emitting module 410. The detection module 440 is connected to the light emitting module 410 and the light receiving module 430 and is configured to detect the time interval between the probe light received by the light receiving module 430 and the probe light emitted by the light emitting module 410. The control module 450 is connected to the detection module 440 and the vertical magnetic pole pair 322 and is configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module 440. The orthographic projection of the light emitting module 410 on the second substrate 120 covers the light receiving module 430.

[0058] In some embodiments, the light receiving module 430 can be directly disposed on the opposite side of the light emitting module 410. After the light emitting module 410 emits a detection light, the light receiving module 430 will receive the detection light within a second preset interval threshold if no vertical deformation occurs. If vertical deformation occurs, the time interval between the detection light of the light receiving module 430 and the detection light emitted by the light emitting module 410 will be less than the second preset interval threshold. The detection module 440 detects the time interval between the detection light received by the light receiving module 430 and the detection light emitted by the light emitting module 410, and determines the magnitude of the vertical deformation based on the difference between the time interval and the second preset interval threshold, thereby determining the degree of vertical deformation and determining the magnitude of the magnetic field generated by the vertical magnetic pole pair 322 based on the vertical deformation.

[0059] Please see Figure 6 As shown, when at least one set of magnetic pole pairs 320 includes a vertical magnetic pole pair 322, the deformation detection unit further includes: a light absorption module 460, which is disposed on at least one side of the light receiving module 430 in the horizontal direction, and is configured to absorb the detection light emitted by the light emitting module 410 when the electronic paper display device undergoes horizontal deformation; the detection module 440 is further configured to detect the light intensity difference between the detection light received by the light receiving module 430 and the detection light emitted by the light emitting module 410; and the control module 450 is further connected to the horizontal magnetic pole pair 321, and is configured to determine the horizontal deformation based on the light intensity difference detected by the detection module 440.

[0060] In some embodiments, when horizontal deformation occurs, the light emitting module 410 or the light receiving module 430 will shift, causing part or all of the detection light emitted by the light emitting module 410 to shift to the light absorption module 460, and the intensity of the detection light received by the light receiving module 430 will decrease. The detection module 440 can also detect the intensity of the detection light emitted by the light emitting module 410 and the intensity of the detection light received by the light receiving module 430, and can calculate the intensity difference between the detection light emitted by the light emitting module 410 and the detection light received by the receiving module. If the intensity difference is greater than a preset intensity threshold, it indicates that horizontal deformation has occurred, and the degree of horizontal deformation can be determined according to the magnitude of the intensity difference, thereby determining the magnitude of the magnetic field generated by the horizontal magnetic pole pair 321 according to the horizontal deformation. It should be noted that the light emitting module 410 can be an LED light-emitting module, and the light receiving module 430 can be a device that receives light, such as a circuit containing a photoresistor, which can be set at the driving backlight module end. The light receiving module 430 and the light absorption module 460 can be set at the electronic paper film end. The detection module is a device with a timing function and can collect light intensity. For example, the detection module includes a timer and a light sensor. The timer is used to detect the time when the light receiving module receives light, and the light sensor is used to detect the light intensity of the light receiving device. The control module can be a logic control circuit or a programmable chip.

[0061] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. An electronic paper display device, comprising a display area, characterized in that, The electronic paper display device includes: First substrate; The second substrate is disposed opposite to the first substrate; Display microcup supports are located between the first substrate and the second substrate, and multiple display microcup arrangements are arrayed in the display area; A deformation support structure is provided between the first substrate and the second substrate and disposed between adjacent display microcup structures. The deformation support structure includes a support column and at least one set of magnetic pole pairs. The support column is filled with magnetorheological material, and each pair of magnetic poles is located on opposite sides of the support column. It is configured to control the magnetic particles in the magnetorheological material to form a target support body according to the deformation of the electronic paper display device. The at least one set of magnetic pole pairs includes: at least one set of horizontal magnetic pole pairs, respectively disposed on opposite sides of the support column in the horizontal direction, configured to control the magnetic particles in the magnetorheological material to form a target support body according to the horizontal deformation of the electronic paper display device.

2. The electronic paper display device according to claim 1, characterized in that, The horizontal magnetic pole pairs are provided in multiple sets, and the multiple sets of horizontal magnetic pole pairs are arranged at intervals along the vertical direction.

3. The electronic paper display device according to claim 1, characterized in that, The at least one set of magnetic pole pairs includes: At least one pair of vertical magnetic poles are disposed on opposite sides of the support column in the vertical direction, and are configured to control the magnetic particles in the magnetorheological material to form a target support body according to the vertical deformation of the electronic paper display device.

4. The electronic paper display device according to claim 3, characterized in that, The vertical magnetic pole pairs are arranged in multiple sets, and the multiple sets of vertical magnetic pole pairs are arranged at intervals along the horizontal direction.

5. The electronic paper display device according to any one of claims 1 to 4, characterized in that, The electronic paper display device further includes a non-display area located at the edge of the display area; wherein, the electronic paper display device further includes a deformation detection unit. The deformation detection unit is located in the non-display area and is disposed inside the first substrate and the second substrate. The deformation detection unit is connected to the magnetic pole pair and is configured to detect the deformation of the electronic paper display device.

6. The electronic paper display device according to claim 5, characterized in that, When the at least one set of magnetic pole pairs includes a vertical magnetic pole pair, the deformation detection unit includes: A light emitting module, located on the inner side of the first substrate, is configured to emit detection light rays; A light reflection module is disposed on the inner side of the second substrate. The light reflection module is configured to reflect the detection light emitted by the light emission module to obtain reflected light. A light receiving module is disposed on the inner side of the first substrate and is configured to receive the detection light reflected by the light reflecting module; A detection module, connected to the light emitting module and the light receiving module, is configured to detect the time interval between the reflected light received by the light receiving module and the detection light emitted by the light emitting module; A control module, connected to the detection module and the vertical magnetic pole pair, is configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module.

7. The electronic paper display device according to claim 6, characterized in that, The orthographic projection of the light reflection module on the first substrate covers both the light emission module and the light receiving module.

8. The electronic paper display device according to claim 6, characterized in that, When the at least one set of magnetic pole pairs includes a horizontal magnetic pole pair, the deformation detection unit further includes a light absorption module disposed on at least one side of the light reflection module in the horizontal direction, and the light absorption module is configured to absorb the detection light emitted by the light emission module when the electronic paper display device undergoes horizontal deformation; The detection module is also configured to detect the light intensity difference between the reflected light received by the light receiving module and the probe light emitted by the light emitting module; The control module is also connected to the horizontal magnetic pole pair, and the control module is configured to determine the horizontal deformation based on the light intensity difference detected by the detection module.

9. The electronic paper display device according to claim 5, characterized in that, When the at least one set of magnetic pole pairs includes a vertical magnetic pole pair, the deformation detection unit includes: A light emitting module, located on the inner side of the first substrate, is configured to emit detection light rays; An optical receiving module is disposed on the inner side of the second substrate and is configured to receive the detection light emitted by the optical emitting module; A detection module, connected to the light emitting module and the light receiving module, is configured to detect the time interval between the detection light received by the light receiving module and the detection light emitted by the light emitting module; A control module, connected to the detection module and the vertical magnetic pole pair, is configured to determine the vertical deformation of the electronic paper display device based on the time interval detected by the detection module.

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