Electronic paper display panel, driving method, driving device and electronic paper device

Abstract

The disclosed embodiments provide an electronic paper display panel, a driving method, a driving device and an electronic paper device, wherein the electronic paper display panel comprises: a paper film and a driving substrate of the paper film; the paper film comprises a plurality of pixel paper film units, the pixel paper film units comprise: three types of paper film particles, the charge-to-mass ratios of the three types of paper film particles are all different, each paper film particle of the same type has two colors with equal areas, the colors of different types of paper film particles are not repeated, each paper film particle has two magnetic properties, and the two colors of the same type of paper film particles each correspond to one magnetic property; the driving substrate comprises a plurality of driving units corresponding one to the pixel paper film units, the driving units comprise: a pixel electrode layer and a magnetic induction structure; the magnetic induction structure is arranged corresponding to the pixel paper film unit; the pixel electrode layer is used to control different types of paper film particles to adjust up and down positions when receiving different voltage signals.

Description

Technical Field

[0001] The present disclosure relates to the display field, and in particular to an electronic paper display panel, a driving method, a driving device and an electronic paper device. Background Art

[0002] For conventional ESL products (i.e. electronic paper display products), the pixels use upper and lower electrodes to form an electric field, which attracts or repels charged balls using the electric field force (the structure is shown in the figure below). Figure 1 As shown in the figure, in order to distinguish the balls of different colors (also called paper film particles, each ball is coated with one color), the charge-to-mass ratio (i.e. charge and density) of the balls must be different. The balls of different colors can be separated by adjusting the electrode voltage and refresh time.

[0003] The above method is only controlled by electric field force, and the types of balls with different charge-to-mass ratios that can be distinguished are limited. Moreover, each color change requires the balls to swap positions by moving up and down, and the refresh rate is slow. Therefore, the currently commonly used electronic paper display can only achieve three-color display, which has fewer colors.

[0004] In conventional electronic paper, each charged particle in the paper film has only one color. Each change in color requires the charged particles to be moved, which results in a slow refresh rate and fewer displayable colors. Summary of the invention

[0005] In view of this, the embodiments of the present disclosure propose an electronic paper display panel, a driving method, a driving device and an electronic paper device to solve the following problems in the prior art: a conventional electronic paper display screen has only one color on each paper film particle, and the electric field is used to drive the paper film particles to change position and thus adjust the display color, but each time the color changes, the charged particles need to be pushed to move, resulting in slow refresh and few displayable colors.

[0006] On the one hand, the disclosed embodiment proposes an electronic paper display panel, comprising: a paper film and a driving substrate of the paper film; the paper film comprises a plurality of pixel paper film units, the pixel paper film units comprise: three types of paper film particles, the charge-to-mass ratios of the three types of paper film particles are all different, each paper film particle of the same type has two colors with equal areas, the colors of different types of paper film particles are not repeated, each paper film particle has two magnetic properties, and the two colors of the same type of paper film particles each correspond to one magnetic property; the driving substrate comprises a plurality of driving units corresponding to the pixel paper film units one by one, the driving units comprise: a pixel electrode layer and a magnetic induction structure; the magnetic induction structure is arranged corresponding to the pixel paper film unit, and is used to adjust the color of the paper film particles relative to the upper electrode layer by generating a changeable magnetic pole; the pixel electrode layer is used to control different types of paper film particles to adjust the upper and lower positions when receiving different voltage signals, so that the same type of paper film particles matching the current voltage value move to the side close to the upper electrode layer.

[0007] In some embodiments, the driving unit further includes: a TFT switch or two TFT switches, and the TFT switch is used to control the magnetic sensing structure and / or the pixel electrode layer.

[0008] In some embodiments, the TFT switch includes: a gate signal line, a magnetic field signal line, and an electric field signal line; wherein the magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; the electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; the gate signal line is connected to the magnetic field signal line and the electric field signal line at the same time, and is used to simultaneously turn on or off the magnetic field signal line and the electric field signal line.

[0009] In some embodiments, the two TFT switches include: two gate signal lines, a magnetic field signal line, and an electric field signal line; wherein the magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; the electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; a first gate signal line is connected to the magnetic field signal line, and is used to turn on or off the magnetic field signal line; and a second gate signal line is connected to the electric field signal line, and is used to turn on or off the electric field signal line.

[0010] In some embodiments, the magnetic induction structure includes at least one of the following: an electromagnetic induction coil, a magnetic material layer.

[0011] In some embodiments, it also includes: an upper electrode layer disposed on the upper layer of the paper film.

[0012] On the other hand, an embodiment of the present disclosure proposes a driving method for driving the electronic paper display panel described in any embodiment of the present disclosure, including: detecting whether a switching control signal is received; when the switching control signal is received, sending a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color.

[0013] In some embodiments, sending a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color includes: sending a second signal to the pixel electrode layer so that the pixel electrode layer drives the same type of paper film particles matching the current voltage value to move close to the upper electrode layer side; and / or sending a first signal to the magnetic induction structure so that the magnetic induction structure generates a first magnetic field, and the first magnetic field is used to adjust the color of the paper film particles in the paper film relative to the upper electrode layer.

[0014] On the other hand, an embodiment of the present disclosure proposes a driving device for driving the electronic paper display panel described in any embodiment of the present disclosure, including: a detection module for detecting whether a switching control signal is received; a control module for sending a working signal to the magnetic induction structure and / or the pixel electrode layer when the switching control signal is received, so as to control the paper film to display a predetermined color.

[0015] On the other hand, an embodiment of the present disclosure provides an electronic paper device, including: the electronic paper display panel described in any embodiment of the present disclosure, and the driving device described in any embodiment of the present disclosure.

[0016] The paper film particles in the paper film of the disclosed embodiment have different electrical properties and magnetic properties. Therefore, under the dual effects of the electric field and the magnetic field, the colored paper film particles can be affected by the dual effects of the electric field force and the magnetic field force, realizing two motion modes: up and down motion and rotation. The different magnetic field force directions of the paper film particles correspond to different colors. The rotational motion caused by the magnetic field force responds faster than the up and down motion caused by the electric field force. Therefore, a faster response speed can be achieved on the basis of realizing color, and the color rendering amount is doubled, and the product performance is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a partial cross-sectional schematic diagram of an existing electronic paper display screen;

[0019] Figure 2 A schematic diagram of a partial cross-sectional structure of an electronic paper display panel provided in an embodiment of the present disclosure;

[0020] Figure 3 A design schematic diagram of a driving unit including a TFT switch provided in an embodiment of the present disclosure;

[0021] Figure 4 The embodiments of the present disclosure provide Figure 3 The different levels of the diagram are broken down layer by layer. Figure 1 ;

[0022] Figure 5 The embodiments of the present disclosure provide Figure 3 The different levels of the diagram are broken down layer by layer. Figure 2 ;

[0023] Figure 6 The embodiments of the present disclosure provide Figure 3 The different levels of the diagram are broken down layer by layer. Figure 3 ;

[0024] Figure 7 A design schematic diagram of a driving unit including two TFT switches provided in an embodiment of the present disclosure;

[0025] Figure 8 It is a hierarchical structure process diagram of an existing drive unit;

[0026] Fig. 9 A hierarchical structure process diagram of a driving unit of a TFT switch provided in an embodiment of the present disclosure;

[0027] Fig.10 A hierarchical structure process diagram of a driving unit of two TFT switches provided in an embodiment of the present disclosure;

[0028] Fig.11 A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 1 ;

[0029] Fig.12 A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 2 ;

[0030] Fig.13 A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 3 ;

[0031] Fig.14 A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 4 ;

[0032] Fig.15A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 5 ;

[0033] Fig.16 A driving and display diagram of an electronic paper display panel provided in an embodiment of the present disclosure Figure 6 ;

[0034] Fig.17 Another schematic diagram of a design of a drive unit provided in an embodiment of the present disclosure;

[0035] Fig.18 A flowchart of a driving method provided by an embodiment of the present disclosure;

[0036] Fig.19 A schematic diagram of the structure of a driving device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0040] The present disclosure provides an electronic paper display panel, a partial cross-sectional structure of which is shown as follows: Figure 2 As shown, including:

[0041] Paper film and driving substrate of the paper film;

[0042] The paper film includes a plurality of pixel paper film units, and the pixel paper film units include: three types of paper film particles 1, the charge-to-mass ratios of the three types of paper film particles are all different, each paper film particle of the same type has two colors with equal areas, the colors of different types of paper film particles are not repeated, each paper film particle has two magnetic properties (the figure and subsequent embodiments all take N and S poles as examples), and the two colors of the same type of paper film particles each correspond to one magnetic property;

[0043] The driving substrate includes a plurality of driving units corresponding one to one with the pixel paper film units, and the driving units include: a pixel electrode layer 2 and a magnetic induction structure 3; the magnetic induction structure is arranged corresponding to the pixel paper film unit and is used to adjust the color of the paper film particles relative to the upper electrode layer 4 by generating a changeable magnetic pole; the pixel electrode layer is used to control different types of paper film particles to adjust their upper and lower positions when receiving different voltage signals, so that the same type of paper film particles matching the current voltage value move to the side close to the upper electrode layer.

[0044] The paper film particles in the paper film of the disclosed embodiment have different electrical properties and magnetic properties. Therefore, under the dual effects of the electric field and the magnetic field, the colored paper film particles can be affected by the dual effects of the electric field force and the magnetic field force, realizing two motion modes: up and down motion and rotation. The different magnetic field force directions of the paper film particles correspond to different colors. The rotational motion caused by the magnetic field force responds faster than the up and down motion caused by the electric field force. Therefore, a faster response speed can be achieved on the basis of realizing color, and the color rendering amount is doubled, and the product performance is better.

[0045] The electronic paper display panel further comprises an upper electrode layer arranged on the upper layer of the paper film. Figure 2 As shown in the figure. Figure 2 , which shows an example of a cross-sectional structure of a pixel paper film unit in an electronic paper display panel. The magnetic induction structure in the figure may be an electromagnetic induction coil (also called a spiral coil) or a magnetic material layer, etc. The embodiments of the present disclosure will be described using a spiral coil as an example.

[0046] The driving unit further includes one TFT switch or two TFT switches, and the TFT switch is used to control the magnetic sensing structure and / or the pixel electrode layer. If there is one TFT switch, the magnetic sensing structure and the pixel electrode layer need to be controlled simultaneously, and if there are two TFT switches, the magnetic sensing structure and the pixel electrode layer can be controlled independently.

[0047] In the case of only one TFT switch, the TFT switch can exist in the driving substrate in the form of a gate signal line, a magnetic field signal line, and an electric field signal line, that is, a TFT switch includes a gate signal line, a magnetic field signal line, and an electric field signal line; wherein the magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; the electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; the gate signal line is connected to the magnetic field signal line and the electric field signal line at the same time, and is used to simultaneously turn on or off the magnetic field signal line and the electric field signal line.

[0048] Figure 3 A schematic diagram of a drive unit including a TFT switch is shown. It can be clearly seen in the figure that a gate signal line is connected to a magnetic field signal line and an electric field signal line at the same time. For the sake of clarity, Figure 3 The schematic diagrams after the different levels are split layer by layer are as follows Figure 4 , Figure 5 As shown, Figure 4 For Figure 3 A schematic diagram of the design of the driving unit after removing the pixel electrode (i.e. the abbreviation of the pixel electrode layer) based on the original image; Figure 5 For Figure 4 Based on this, the design diagram of the drive unit after removing the magnetic field signal line and the corresponding layers of the spiral coil is shown. Figure 6 For Figure 5 The design schematic diagram of the drive unit after removing the corresponding layers of the electric field signal line is shown. When removing the various layers in the above-mentioned figures, other layers not related to the embodiments of the present disclosure are not deleted together. For example, the multiple small box areas (insulating layer areas) used to connect to the upper electrode layer in the figure are not deleted, as well as the semiconductor areas connecting the magnetic field signal line and the electric field signal line, etc., which will not be repeated here. Compared with the existing drive unit, the drive unit of the embodiment of the present disclosure adds a spiral coil and a magnetic field signal line, and the other structures are similar to the existing drive unit structure, which will not be repeated here.

[0049] In the case of including two TFT switches, the TFT switch can be provided with two gate signal lines, one magnetic field signal line, and one electric field signal line in the driving substrate; wherein the magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; the electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; the first gate signal line is connected to the magnetic field signal line, and is used to turn on or off the magnetic field signal line; the second gate signal line is connected to the electric field signal line, and is used to turn on or off the electric field signal line. Figure 7 A schematic diagram of a design of a driving unit including two TFT switches is shown, including two gate signal lines.

[0050] In specific implementation, in order to avoid the interference that may be caused by the simultaneous control of the magnetic field and the electric field, the disclosed embodiment preferably adopts a solution of two TFT switches, that is, the electric field of the pixel electrode layer is turned on first, so that the charged paper film particles move to the specified position, and then the TFT controlling the spiral coil is turned on to adjust the color by rotating the paper film particles. Therefore, the electric field and the magnetic field do not interfere with each other. In the above design process, the influence of the current size and the number of coils in the spiral coil on the movement of the paper film particles can be verified by experiments, and the magnetic field can be adjusted to a state where the size of the magnetic field can only rotate the paper film particles but not move them.

[0051] The existing hierarchical structure process of the drive unit is as follows Figure 8 As shown, it usually includes the bottom layer Gate (gate signal line), the insulating layer (GI) between Gate and Active (semiconductor), the next layer is Active, the next layer is the electric field signal line (also called SD), the insulating layer (PVX) between SD and the pixel electrode layer (also called the lower electrode layer), and the top layer is the pixel electrode (ITO).

[0052] The disclosed embodiment has a hierarchical structure process of a driving unit of a TFT switch. Fig. 9 As shown, the hierarchical structure process of the driving unit with two TFT switches in the embodiment of the present disclosure is as follows Fig.10 As shown. Figure 8 , Fig. 9 and Fig.10 The comparison shows the process changes of the embodiment of the present disclosure relative to the existing drive unit.

[0053] The disclosed embodiments have made improvements on the structure of the paper film and the driving substrate of a conventional electronic paper display panel, and proposed a new type of electronic paper display panel that can double the displayable colors and improve the refresh rate without increasing the number of particles.

[0054] In existing electronic paper display panels, different paper film particles have different charge-to-mass ratios, and therefore can be driven to different positions by different voltages. This is a mature process for existing paper film particles. On this basis, the paper film particles of the disclosed embodiment are also provided with magnetism, which can be changed by coating materials or the internal structure of the paper film particles, which will not be elaborated in the disclosed embodiment. In addition, the disclosed embodiment also coats different colors on two different polarity sides, so one paper film particle can have two colors. Compared with existing paper films, the color is doubled without increasing the number of particles.

[0055] Since the paper film particles in the paper film of the embodiment of the present disclosure have different electrical and magnetic properties (for example, the magnetism is the South Pole and the North Pole), under the dual action of the electric field and the magnetic field, the colored paper film particles can be affected by the dual action of the electric field force and the magnetic field force, realizing two motion modes: up and down motion and rotation. The rotational motion caused by the magnetic field force responds faster than the up and down motion caused by the electric field force, so a faster response speed can be achieved on the basis of realizing color.

[0056] When driving, the paper film particles with different charges can be separated into upper and lower parts by an electric field, for example Fig.11 As shown, a negative voltage (-15V) is applied to the pixel electrode layer, and the upper electrode layer is generally a common electrode at around 0V and remains unchanged. The negatively charged paper film particles are pushed to the upper layer, and then a magnetic field is added to control the flow direction of the coil current and the direction of the S and N poles so that the S pole is facing upward, and the A1 color corresponding to the N pole of the paper film particle will be attracted upward, and the entire pixel will display the A1 color.

[0057] like Fig.12 As shown, when the A2 color needs to be displayed, a -15V voltage is applied to the bottom electrode to move the yellow particles to the top. The A2 side is the S pole, and the magnetic field on the upper side of the spiral coil should be the S pole. Adding a clockwise current can generate a magnetic field in this direction. The states of the other two color particles are that A3 and A4 particles are in the middle layer of the electrophoretic liquid, and the S pole (A4 side) is facing upward; A5 and A6 particles are in the bottom layer, and the S pole (A6 side) is facing upward.

[0058] like Fig.13 As shown, when the A3 color needs to be displayed, a voltage of +6V is applied to the bottom electrode, and the upper electrode layer is generally a common electrode at around 0V and remains unchanged, forming an electric field from bottom to top, causing the A3 particles to move to the top. Because one side of A3 is an N pole, to display A3, the N pole (A3 surface) needs to face up and the S pole (A4 surface) needs to face down. The spiral coil is below the magnetic particles, so the N pole needs to be on the spiral coil. Adding a counterclockwise current can generate a magnetic field in this direction. The states of the other two color particles are: A5 and A6 color particles are in the middle layer of the electrophoretic liquid, and the N pole (A5 surface) faces up; A1 and A2 paper film particles are in the bottom layer, and the N pole (A1 surface) faces up.

[0059] like Fig.14 As shown, when the A4 color needs to be displayed, a +6V voltage is applied to the bottom electrode to make the A4 particles move to the top. The A4 side is the S pole, and the magnetic field on the upper side of the spiral coil should be the S pole. Adding a clockwise current can generate a magnetic field in this direction. The states of the other two color particles are that the A5 and A6 particles are in the middle layer of the electrophoretic liquid, and the S pole (A6 side) is facing upward; the A1 and A2 paper film particles are in the bottom layer, and the S pole (A2 side) is facing upward.

[0060] like Fig.15As shown, when the A5 color needs to be displayed, a +15V voltage is applied to the bottom electrode to make the A5 particles move to the top. The A5 side is the N pole, so the magnetic field on the upper side of the spiral coil should be the N pole. Adding a counterclockwise current can generate a magnetic field in this direction. The states of the other two color particles are that the A3 and A4 particles are in the middle layer of the electrophoretic liquid, and the N pole (A3 side) is facing upward; the A1 and A2 paper film particles are in the bottom layer, and the N pole (A1 side) is facing upward.

[0061] like Fig.16 As shown, when the A6 color needs to be displayed, a +15V voltage is applied to the bottom electrode to move the A6 particles to the top. The A6 side is the S pole, and the magnetic field on the upper side of the spiral coil should be the S pole. Adding a clockwise current can generate a magnetic field in this direction. The states of the other two color particles are that the A3 and A4 particles are in the middle layer of the electrophoretic liquid, and the S pole (A4 side) is facing upward; the A1 and A2 paper film particles are in the bottom layer, and the S pole (A2 side) is facing upward.

[0062] The magnetic induction structure in the above figures is based on a spiral coil as an example, and it can also be Fig.17 The film layer (i.e., magnetic material layer) generating a magnetic field is shown, and other structures are not described here. The film layer material generating a magnetic field can be a two-dimensional layered material or a two-dimensional atomic crystal such as Cr2Ge2Te6, CrSiTe3, Cr2Sn2Te6, K2CuF4, FePS3, NiPS3, MnPS3, Fe3GeTe2, CrI3, VSe2, etc.

[0063] The present disclosure also provides a driving method for driving the electronic paper display panel of the above embodiment of the present disclosure. The process is as follows: Fig.18 As shown, steps S1801 to S1802 are included:

[0064] S1801, detecting whether a switching control signal is received;

[0065] S1802, when receiving the switching control signal, sending a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color.

[0066] In the process of sending a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color, a second signal can be sent to the pixel electrode layer so that the pixel electrode layer drives the same type of paper film particles that match the current voltage value to move close to the upper electrode layer side; and / or, a first signal is sent to the magnetic induction structure so that the magnetic induction structure generates a first magnetic field, and the first magnetic field is used to adjust the color of the paper film particles in the paper film relative to the upper electrode layer.

[0067] The paper film particles in the paper film of the disclosed embodiment have different electrical properties and magnetic properties. Therefore, under the dual effects of the electric field and the magnetic field, the colored paper film particles can be affected by the dual effects of the electric field force and the magnetic field force, realizing two motion modes: up and down motion and rotation. The different magnetic field force directions of the paper film particles correspond to different colors. The rotational motion caused by the magnetic field force responds faster than the up and down motion caused by the electric field force. Therefore, a faster response speed can be achieved on the basis of realizing color, and the color rendering amount is doubled, and the product performance is better.

[0068] The present disclosure also provides a driving device for driving the electronic paper display panel of the above embodiment of the present disclosure. The structure of the driving device is shown in FIG. Fig.19 As shown, including:

[0069] The detection module 10 is used to detect whether a switching control signal is received; the control module 20 is coupled to the detection module 10 and is used to send a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color when the switching control signal is received.

[0070] The control module 20 can be specifically used to send a second signal to the pixel electrode layer so that the pixel electrode layer drives the same type of paper film particles that match the current voltage value to move close to the upper electrode layer side; and / or, send a first signal to the magnetic induction structure so that the magnetic induction structure generates a first magnetic field, and the first magnetic field is used to adjust the color of the paper film particles in the paper film relative to the upper electrode layer.

[0071] The embodiment of the present disclosure further provides an electronic paper device, including the electronic paper display panel of the above embodiment of the present disclosure and the driving device of the above embodiment of the present disclosure, and the specific scheme is not repeated here.

[0072] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and the examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0073] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present disclosure. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present disclosure may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present disclosure should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0074] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. An electronic paper display panel, characterized in that: include: A paper film and a driving substrate for the paper film; The paper film includes a plurality of pixel paper film units, and the pixel paper film units include: three types of paper film particles, the charge-to-mass ratios of the three types of paper film particles are all different, each paper film particle of the same type has two colors with equal areas, the colors of different types of paper film particles are not repeated, each paper film particle has two magnetic properties, and the two colors of the same type of paper film particles each correspond to one magnetic property; The driving substrate includes a plurality of driving units corresponding to the pixel paper film units one by one, and the driving units include: a pixel electrode layer and a magnetic induction structure; The magnetic induction structure is arranged corresponding to the pixel paper film unit and is used to adjust the color of the paper film particles relative to the upper electrode layer by generating a variable magnetic pole; The pixel electrode layer is used to control different types of paper film particles to adjust their upper and lower positions when receiving different voltage signals, so that the same type of paper film particles matching the current voltage value move to the side close to the upper electrode layer; The driving unit further comprises: One TFT switch or two TFT switches, wherein the TFT switch is used to control the magnetic sensing structure and / or the pixel electrode layer; The two TFT switches include: Two gate signal lines, one magnetic field signal line, and one electric field signal line; wherein, The magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; The electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; A first gate signal line, connected to the magnetic field signal line, for switching on or off the magnetic field signal line; The second gate signal line is connected to the electric field signal line and is used to turn on or off the electric field signal line.

2. The electronic paper display panel according to claim 1, characterized in that: The one TFT switch comprises: A gate signal line, a magnetic field signal line, and an electric field signal line; wherein, The magnetic field signal line is used to control the magnetic induction structure to generate a predetermined magnetic field; The electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer; The gate signal line is connected to the magnetic field signal line and the electric field signal line at the same time, and is used to simultaneously turn on or off the magnetic field signal line and the electric field signal line.

3. The electronic paper display panel according to any one of claims 1 to 2, characterized in that: The magnetic induction structure includes at least one of the following: an electromagnetic induction coil and a magnetic material layer.

4. The electronic paper display panel according to any one of claims 1 to 2, characterized in that: Also includes: An upper electrode layer is arranged on the upper layer of the paper film.

5. A driving method, characterized in that: Used to drive the electronic paper display panel according to any one of claims 1 to 4, comprising: detecting whether a switching control signal is received; When the switching control signal is received, a working signal is sent to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color.

6. The driving method according to claim 5, characterized in that: The sending of a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color includes: Sending a second signal to the pixel electrode layer so that the pixel electrode layer drives the same type of paper film particles matching the current voltage value to move closer to the upper electrode layer; and / or, A first signal is sent to the magnetic induction structure to make the magnetic induction structure generate a first magnetic field, wherein the first magnetic field is used to adjust the color of paper film particles in the paper film relative to the upper electrode layer.

7. A driving device, characterized in that: Used to drive the electronic paper display panel according to any one of claims 1 to 4, comprising: A detection module, used to detect whether a switching control signal is received; The control module is used to send a working signal to the magnetic induction structure and / or the pixel electrode layer to control the paper film to display a predetermined color when receiving the switching control signal.

8. An electronic paper device, characterized in that: include: The electronic paper display panel according to any one of claims 1 to 4, and the driving device according to claim 7.

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