Electronic ink screen control method and display control device

Abstract

A method for controlling an electronic ink screen, wherein the electronic ink screen includes multiple pixels, at least one pixel includes charged particles of a first color and charged particles of a second color, and the first color charged particles and the second color charged particles have the same electrical properties. The method for controlling the electronic ink screen includes: inputting a first color drive signal (B) into a pixel in the electronic ink screen to display the first color. The first color drive signal (B) includes multiple sub-signals corresponding to multiple drive stages, the multiple sub-signals including a first color imaging sub-signal (B6) and a particle separation sub-signal (BB'), and the drive stage corresponding to the particle separation sub-signal (BB') is at least one drive stage (Stage4, Stage5) before the drive stage (Stage6) corresponding to the first color imaging sub-signal. The particle separation sub-signal (BB') is configured to drive the first color charged particles and the second color charged particles in the pixel to move and separate the first color charged particles and the second color charged particles.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a control method for an electronic ink screen, a display control device, and an electronic ink display device. Background Art

[0002] Like traditional ink, electronic ink can be printed onto the surface of many materials (e.g., plastic, polyester film, paper, cloth, etc.); the difference is that electronic ink can change the displayable color under the action of an electric field, so that electronic ink display devices made of electronic ink can display images.

[0003] Compared with other types of displays, such as liquid crystal displays (LCDs) and organic electroluminescence displays (OLEDs), electronic ink displays have the advantages of low power consumption, ease of readability, and ease of inexpensive manufacturing. Summary of the Invention

[0004] In one aspect, a method for controlling an electronic ink display is provided. The electronic ink display includes a plurality of pixels, at least one pixel including charged particles of a first color and charged particles of a second color, the first color charged particles and the second color charged particles having the same electrical properties. The method for controlling the electronic ink display includes: inputting a first color driving signal to a pixel of the electronic ink display to display a first color;

[0005] The first color driving signal includes multiple sub-signals corresponding to multiple driving phases, including a first color imaging sub-signal and a particle separation sub-signal. The driving phase corresponding to the particle separation sub-signal is at least one driving phase prior to the driving phase corresponding to the first color imaging sub-signal. The first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; the particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles in the pixel to move and separate the first color charged particles from the second color charged particles.

[0006] In some embodiments, the particle separation sub-signal includes a first particle separation sub-signal, and the driving stage corresponding to the first particle separation sub-signal is a driving stage before the driving stage corresponding to the first color imaging sub-signal; the first particle separation sub-signal is a first color down-fader signal, and the first color down-fader signal is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and separate the first color charged particles and the second color charged particles.

[0007] In some embodiments, the particle separation sub-signal includes a second particle separation sub-signal, and the driving phase corresponding to the second particle separation sub-signal is a driving phase prior to the driving phase corresponding to the first color imaging sub-signal. The second particle separation sub-signal is a first color first dithering sub-signal, and the first color first dithering sub-signal includes a first level and a second level that appear alternately in a time sequence. The second particle separation signal is configured to drive the first color charged particles and the second color charged particles to swing; wherein the first level is configured to drive the first color charged particles and the second color charged particles to move toward the side close to the display surface of the electronic ink screen, and the second level is configured to drive the first color charged particles and the second color charged particles to move toward the side away from the display surface of the electronic ink screen. The duration of the first level is less than the duration of the second level.

[0008] In some embodiments, the particle separation sub-signal includes a first particle separation sub-signal and a second particle separation sub-signal, the driving stage corresponding to the first particle separation sub-signal is before the driving stage corresponding to the first color imaging sub-signal, and the driving stage corresponding to the second particle separation sub-signal is before the driving stage corresponding to the first particle separation sub-signal; the first particle separation sub-signal is a first color down-fader signal, and the first color down-fader signal is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and separate the first color charged particles and the second color charged particles.

[0009] The second particle separation sub-signal is a first-color first dithering sub-signal, comprising a first level and a second level that alternate in time sequence. The second particle separation sub-signal is configured to drive the first-color charged particles and the second-color charged particles to oscillate, wherein the first level is configured to drive the first-color charged particles and the second-color charged particles to move toward a side closer to the display surface of the electronic ink screen, and the second level is configured to drive the first-color charged particles and the second-color charged particles to move away from the display surface of the electronic ink screen; and the duration of the first level is shorter than the duration of the second level.

[0010] In some embodiments, the multiple sub-signals included in the first color drive signal further include a first color balance sub-signal, and the driving phase corresponding to the first color balance sub-signal is the first driving phase of the multiple driving phases. The first color balance sub-signal is configured to position the first color charged particles at an initial position; wherein the initial position is the position of the first color charged particles when the pixel to display the first color is not driven by the first color drive signal.

[0011] In some embodiments, the first color balance sub-signal includes a reference level, a third level, a fourth level, and a reference level arranged in sequence; the level polarity of the third level is opposite to the level polarity of the first color imaging sub-signal; when the particle separation sub-signal includes the first particle separation sub-signal, the level polarity of the fourth level is opposite to the level polarity of the first particle separation sub-signal; when the particle separation sub-signal includes the second particle separation sub-signal, the second particle separation sub-signal includes the first level and the second level that appear alternately in time sequence, and the polarity of the fourth level is opposite to the polarity of the second level.

[0012] In some embodiments, the first color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the sub-signals corresponding to the seventh driving stage included in the first color driving signal are: a first color balancing sub-signal, a first color second dithering sub-signal, a first color third dithering sub-signal, a first color first dithering sub-signal, a first color push-down sub-signal, a first color imaging sub-signal, and an electric field cancellation sub-signal.

[0013] The first color balancing sub-signal is configured to position the first color charged particles at an initial position; wherein the initial position is the position of the first color charged particles when the pixel to display the first color is not driven by the first color driving signal. The first color second dithering sub-signal is configured to drive the first color charged particles to swing; the first color second dithering sub-signal is configured to drive the first color charged particles to continue to swing; the first color second dithering sub-signal is configured to drive the first color charged particles and the second color charged particles to swing and separate the first color charged particles and the second color charged particles; the first color push-down sub-signal is configured to drive the first color charged particles and the second color charged particles to move away from the display surface of the electronic ink screen and separate the first color charged particles and the second color charged particles; the first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; and the electric field cancellation sub-signal is configured to cancel the drive of the first color charged particles.

[0014] In some embodiments, the control method further includes: inputting a second color drive signal to pixels of the electronic ink display to display a second color; wherein the second color drive signal includes multiple sub-signals corresponding to multiple drive phases. When the first color drive signal includes a second particle separation sub-signal, the second color drive signal includes a second color first dithering sub-signal; and the drive phase corresponding to the second color first dithering sub-signal is the same as the drive phase corresponding to the second particle separation sub-signal.

[0015] The second-color first dithering sub-signal includes a fifth level and a sixth level that appear alternately in time sequence; the second-color first dithering sub-signal is configured to drive the first-color charged particles and the second-color charged particles to oscillate; wherein the fifth level is configured to drive the first-color charged particles and the second-color charged particles to move toward a side closer to the display surface of the electronic ink screen, and the sixth level is configured to drive the first-color charged particles and the second-color charged particles to move away from the display surface of the electronic ink screen. The duration of the fifth level is equal to the duration of the first level, and the duration of the sixth level is equal to the duration of the second level.

[0016] In some embodiments, the second color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the seventh driving stage included in the second color driving signal are, in sequence: a second color flip sub-signal, a second color balance sub-signal, a second color second dithering sub-signal, a second color first dithering sub-signal, a second color pre-imaging sub-signal, a second color up-fader signal, and a second color imaging sub-signal.

[0017] The second color flip sub-signal is configured to drive the second color charged particles to flip; the second color balance sub-signal is configured to make the position of the second color charged particles be in the initial position; wherein, the initial position is the position of the second color charged particles when the pixel to be displayed the second color is not driven by the second color driving signal; the second color second dithering sub-signal is configured to drive the second color charged particles to swing; the second color first dithering sub-signal is configured to drive the second color charged particles to continue to swing; the second color pre-imaging sub-signal is configured to drive the second color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen; the second color up-pushing sub-signal is configured to drive the second color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen; the second color imaging sub-signal is configured to drive the second color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to be displayed the second color displays the second color.

[0018] In some embodiments, the at least one pixel also includes charged particles of a third color, and the electrical properties of the charged particles of the third color are opposite to those of the charged particles of the first color; the control method also includes: inputting a third color driving signal to the pixel to be displayed in the electronic ink screen of the third color.

[0019] When the first color driving signal includes a second particle separation sub-signal, the third color driving signal includes a third color first dithering sub-signal; the driving stage corresponding to the third color first dithering sub-signal is the same driving stage as the driving stage corresponding to the second particle separation sub-signal; the third color first dithering sub-signal includes a seventh level and a reference level that appear alternately in a time sequence; the third color first dithering sub-signal is configured to drive the third color charged particles to swing; wherein, the seventh level is configured to drive the third color charged particles to move toward the side close to the display surface of the electronic ink screen, and the electric field cancellation level is configured to cancel the drive of the first color charged particles; the duration of the seventh level is equal to the duration of the first level, and the duration of the reference level is equal to the duration of the second level.

[0020] In some embodiments, the third color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the seventh driving stage included in the third color driving signal are, in sequence: a third color balancing sub-signal, a third color third dithering sub-signal, a third color second dithering sub-signal, a third color first dithering sub-signal, an electric field cancellation sub-signal, a third color imaging sub-signal, and an electric field cancellation sub-signal.

[0021] The third color balance sub-signal is configured to make the position of the third color charged particles be in the initial position; wherein, the initial position is the position of the third color charged particles when the pixel to be displayed the third color is not driven by the third color driving signal; the third color third dithering sub-signal is configured to drive the third color charged particles to swing; the third color second dithering sub-signal is configured to drive the third color charged particles to continue to swing; the third color first dithering sub-signal is configured to drive the third color charged particles to continue to swing; the electric field cancellation sub-signal is configured to cancel the drive of the third color charged particles; the third color imaging sub-signal is configured to drive the third color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to be displayed the third color displays the third color; the electric field cancellation sub-signal is configured to cancel the drive of the third color charged particles.

[0022] In some embodiments, when the colors in the image to be displayed include a first color, a second color, and a third color, a first color driving signal is output to pixels in the electronic ink screen to display the first color, a second color driving signal is output to pixels in the electronic ink screen to display the second color, and a first color driving signal is output to pixels in the electronic ink screen to display the third color, including: in the Ith display driving phase of displaying the image to be displayed, each row of pixels of the electronic ink screen is scanned in sequence; a sub-signal corresponding to the Ith driving phase in the first color driving signal is output to pixels in each scanned row of pixels to display the first color, a sub-signal corresponding to the Ith driving phase in the second color driving signal is output to pixels in each scanned row of pixels to display the second color, and a sub-signal corresponding to the Ith driving phase in the third color driving signal is output to pixels in each scanned row of pixels to display the third color; wherein, I≥1, and the number of driving phases corresponding to the second color driving signal, the third color driving signal, and the first color driving signal are the same.

[0023] In some embodiments, when each of the pixels includes charged particles of the first color, charged particles of the second color, and charged particles of the third color, a first color driving signal is output to the pixel to be displayed in the electronic ink screen for the first color, a second color driving signal is output to the pixel to be displayed in the electronic ink screen for the second color, and a third color driving signal is output to the pixel to be displayed in the electronic ink screen for the third color, including: according to a stored first color waveform file, outputting a first color driving signal corresponding to the first color waveform file to the pixel to be displayed for the first color; the first color waveform file records the waveform of the first color driving signal; according to a stored second color waveform file, outputting a second color driving signal corresponding to the second color waveform file to the pixel to be displayed for the second color; the second color waveform file records the waveform of the second color driving signal; according to a stored third color waveform file, outputting a third color driving signal corresponding to the third color waveform file to the pixel to be displayed for the third color; the third color waveform file records the waveform of the third color driving signal.

[0024] On the other hand, a display control device is provided, including: a source driver, at least one memory and at least one processor; the memory is configured to store a first color waveform file, which records the waveform of a first color drive signal; the processor is configured to control the source driver to input the first color drive signal to the pixels to be displayed in the electronic ink screen according to the first color waveform file stored in the at least one memory.

[0025] In which, the first color driving signal includes multiple sub-signals corresponding to multiple driving stages, and the multiple sub-signals include a first color imaging sub-signal and a particle separation sub-signal, and the particle separation sub-signal is located in at least one stage before the stage where the first color imaging signal is located; the first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; the particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles in the pixel to move, and separate the first color charged particles and the second color charged particles.

[0026] In some embodiments, the particle separation sub-signal includes a first particle separation sub-signal, the driving phase corresponding to the first particle separation sub-signal being a driving phase preceding the driving phase corresponding to the first color imaging sub-signal. The first particle separation sub-signal is a first color down-fader signal, configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, thereby separating the first color charged particles from the second color charged particles.

[0027] In some embodiments, the particle separation sub-signal includes a second particle separation sub-signal, the driving phase corresponding to the second particle separation sub-signal being a driving phase preceding the driving phase corresponding to the first color imaging sub-signal. The second particle separation sub-signal is a first-color first dithering sub-signal, the first-color first dithering sub-signal including a first level and a second level that alternate in time sequence.

[0028] The second particle separation signal is configured to drive the first and second color charged particles to oscillate; wherein the first level is configured to drive the first and second color charged particles to move toward a side closer to the display surface of the electronic ink screen, and the second level is configured to drive the first and second color charged particles to move away from the display surface of the electronic ink screen. The duration of the first level is shorter than the duration of the second level.

[0029] In some embodiments, the particle separation sub-signal includes a first particle separation sub-signal and a second particle separation sub-signal, the driving stage corresponding to the first particle separation sub-signal is before the driving stage corresponding to the first color imaging sub-signal, and the driving stage corresponding to the second particle separation sub-signal is before the driving stage corresponding to the first particle separation sub-signal.

[0030] The first particle separation sub-signal is a first color down-fader signal, which is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and separate the first color charged particles and the second color charged particles.

[0031] The second particle separation sub-signal is a first-color first dithering sub-signal, and the first-color first dithering sub-signal includes a first level and a second level that appear alternately in a time sequence. The second particle separation sub-signal is configured to drive the first-color charged particles and the second-color charged particles to oscillate, wherein the first level is configured to drive the first-color charged particles and the second-color charged particles to move toward a side closer to the display surface of the electronic ink screen, and the second level is configured to drive the first-color charged particles and the second-color charged particles to move away from the display surface of the electronic ink screen. The duration of the first level is shorter than the duration of the second level.

[0032] In some embodiments, the at least one memory is further configured to store a second color waveform file and a third color waveform file; wherein the second color waveform file contains a waveform of a second color drive signal; and the third color waveform file contains a waveform of a third color drive signal. The at least one processor is further configured to, based on the second color waveform file stored in the at least one memory, control the source driver to output a second color drive signal corresponding to the second color waveform file to pixels to display a second color; and, based on the third color waveform file stored in the at least one memory, control the source driver to output a third color drive signal corresponding to the third color waveform file to pixels to display a third color.

[0033] On the other hand, an electronic ink display device is provided, comprising: an electronic ink screen and a display control device coupled to the electronic ink screen, the electronic ink screen comprising multiple pixels, at least one pixel comprising charged particles of a first color and charged particles of a second color, the electrical properties of the charged particles of the first color being the same as the electrical properties of the charged particles of the second color; the display control device is the display control device as described above.

[0034] In some embodiments, the charge amount of the first color charged particles is greater than the charge amount of the second color charged particles.

[0035] On the other hand, a computer-readable storage medium is provided, which stores computer program instructions. When the computer program instructions are run on an electronic ink display device, the electronic ink display device executes the control method of the electronic ink screen as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0037] Figure 1 is a structural diagram of a system architecture using an electronic ink display device according to some embodiments of the present disclosure;

[0038] Figure 2 is a structural diagram of an electronic ink display device according to some embodiments of the present disclosure;

[0039] Figure 3 is a structural diagram of an electronic ink screen according to some embodiments of the present disclosure;

[0040] Figure 4 is a structural diagram of the connection between a pixel driving circuit and a pixel electrode according to some embodiments of the present disclosure;

[0041] Figure 5 is a structural diagram of a display control device according to some embodiments of the present disclosure;

[0042] Figure 6 is a structural diagram of another display control device according to some embodiments of the present disclosure;

[0043] Figure 7 is a flowchart of a method for controlling an electronic ink screen according to some embodiments of the present disclosure;

[0044] Figure 8 The screen displayed on the electronic price tag according to some embodiments of the present disclosure;

[0045] Figure 9 This is a template screen of an electronic price label according to some embodiments of the present disclosure;

[0046] Figure 10A is a waveform diagram of a data driving signal in a method for controlling an electronic ink screen according to some embodiments of the present disclosure;

[0047] Figure 10B is a waveform diagram of another data driving signal in the control method of the electronic ink screen according to some embodiments of the present disclosure;

[0048] Figure 10C This is a waveform diagram of another data driving signal in the control method of the electronic ink screen according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0050] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0051] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0052] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact. However, the term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0053] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [stated condition or event] is detected" are optionally interpreted to mean "upon determining" or "in response to determining" or "upon detecting [stated condition or event]" or "in response to detecting [stated condition or event]," depending on the context.

[0054] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0055] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0056] As used herein, "about" or "approximately," "substantially," includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0057] Electronic ink display devices use electrophoretic display technology to achieve display. Electronic ink display devices have many advantages and are therefore widely favored by consumers. However, electronic ink display devices also have some disadvantages. For example, when the refresh time is too long or the usage time is too long, the problem of imaging deviation may occur. Taking the electronic ink display device that can display black, white and red images as an example, after half a year of use, the electronic ink display device may have imaging deviation. The imaging deviation is mainly manifested as the appearance of red when displaying a black image (i.e., black-reddish phenomenon), thereby affecting the display quality and reducing the service life. The inventors of the present disclosure have found through research that one of the reasons for the above-mentioned imaging deviation problem is that when the electronic ink display device is used for too long, the particle activity decreases, and the black particles and red particles cannot be separated under the same voltage drive, resulting in the black-reddish phenomenon.

[0058] To address this issue, see Figure 1Some embodiments of the present disclosure provide a system architecture using an electronic ink display device, including: an electronic ink display device 100 and a communication peer device 200, which can be communicatively connected. The communication peer device 200 is configured to control the image (i.e., screen) displayed on the electronic ink display device 100. In some embodiments, the electronic ink display device 100 can establish a connection with the communication peer device 200 through wireless communication (e.g., Wi-Fi, Bluetooth, etc.). For example, the above system architecture also includes a wireless router or a wireless access point 300. The communication peer device 200 is connected to the wireless router or wireless access point (AccessPoint, AP) 300 through wireless communication or wired communication, and the electronic ink display device 100 establishes a connection with the wireless router or wireless access point 300 through wireless communication, and then communicates with the communication peer device 200. Of course, this embodiment is not limited to this communication connection method. For example, the communication peer device 200 and the electronic ink display device 100 can also establish a connection through wired communication.

[0059] The electronic ink display device 100 described above can be applied in a variety of scenarios. For example, the electronic ink display device 100 can be an electronic reader, a smart tag (also known as an electronic tag), an electronic watch (e.g., an electronic watch), a thermometer, a bus stop sign, and a gas station price sign. Smart tags can include electronic price tags placed on shelves in supermarkets, convenience stores, and pharmacies, luggage labels, and pharmaceutical labels placed on pharmaceutical packaging.

[0060] See also Figure 2 The electronic ink display device 100 may include: an electronic ink screen 1, a display control device 2, and a communication device 3. The electronic ink screen 1 and the communication device 3 are both connected to the display control device 2.

[0061] See also Figure 3In some embodiments, the electronic ink screen 1 includes a substrate 11, an electronic ink film (Front Panel Liner, FPL) 12 provided on the substrate 11, a first electrode layer 13 and a second electrode layer 14. In the thickness direction of the substrate 11, the first electrode layer 13 and the second electrode layer 14 are provided on both sides of the electronic ink film 12, and the first electrode layer 13 is closer to the substrate 11 than the second electrode layer 14. Generally speaking, the second electrode layer 14 is closer to the display surface of the electronic ink screen 1 than the first electrode layer 13. The electronic ink film 12 includes a plurality of microstructures 121, which may be, for example, microcups or microcapsules. Each microstructure 121 includes a transparent liquid and a plurality of charged particles. By supplying power to the first electrode layer 13 and the second electrode layer 14, the electric field formed between the two can drive the movement of the charged particles in each microstructure 121, so as to control the charged particles in each microstructure 121 suspended at a position close to the display surface ( Figure 3 The type of charged particles on the top of the microstructure 121 is controlled to control the color of each microstructure 121, thereby enabling the electronic ink screen 1 to display images.

[0062] In some embodiments, among the multiple charged particles included in the electronic ink film 12, there may be two charged particles with different colors but the same electrical properties (i.e., the electrical properties of the charges carried are the same), and the two charged particles have different charge amounts. Alternatively, among the multiple charged particles included in the electronic ink film 12, there may be two charged particles with different colors but different electrical properties (i.e., the electrical properties of the charges carried are opposite), and the charge amounts carried by the two charged particles are the same or approximately the same. Alternatively, among the multiple charged particles included in the electronic ink film 12, there may be three charged particles with different colors but different electrical properties, and two of the three charged particles have the same electrical properties, for example, both of the two charged particles are positively charged, and the charge amounts carried by the two charged particles are different, and the charge of the third charged particle is opposite to that of the first two charged particles, for example, it is negatively charged, and the charge amount carried by the third charged particle is the same or approximately the same as that of one of the first two charged particles.

[0063] For example, the multiple charged particles included in the electronic ink film 12 may include: first color charged particles, second color charged particles, and third color charged particles, the first color charged particles and the second color charged particles having the same charge, the first color charged particles and the third color charged particles having opposite charge, and the charge of the first color charged particles is greater than the charge of the second color charged particles, and the charge of the third color charged particles is the same or approximately the same as the charge of the first color charged particles. For example, the electronic ink film 12 includes white charged particles WG, black charged particles BG, and color charged particles CG (for example, red charged particles), wherein the white charged particles WG can be negatively charged, the black charged particles BG and the color charged particles CG can be positively charged, the charge of the black charged particles BG is the same or approximately the same as the charge of the white charged particles WG, for example, both are 11V to 15V, the charge of the black charged particles BG is greater than the charge of the color charged particles CG, for example, the charge of the color charged particles CG is 4V to 7V. In this way, the black charged particles BG are used as the first color charged particles, the colored charged particles CG are used as the second color charged particles, and the white charged particles WG are used as the third color charged particles. For another example, the electronic ink film 12 includes white charged particles WG, black charged particles BG, and colored charged particles CG, wherein the colored charged particles CG can be negatively charged, one of the white charged particles WG and the black charged particles BG (for example, the white charged particles WG) can be negatively charged, and the other (for example, the black charged particles BG) can be positively charged; wherein the charge of the white charged particles WG is the same or approximately the same as the charge of the black charged particles BG, and the charge of the colored charged particles CG is less than the charge of the white charged particles WG or the charge of the black charged particles BG, then the colored charged particles CG are used as the second color charged particles, the one with the same charge as the colored charged particles CG (the white charged particles WG) is used as the first color charged particles, and the one with the opposite charge to the colored charged particles CG (the black charged particles BG) is used as the third color charged particles.

[0064] See also Figure 3The electronic ink film 12, the first electrode layer 13 and the second electrode layer 14 in the above-mentioned electronic ink screen 1 can constitute a plurality of pixels P. For example, the plurality of pixels P can be distributed in an array, that is, the electronic ink screen includes S rows * Q columns of pixels P, S≥2, Q≥2. Correspondingly, the first electrode layer 13 may include a plurality of first electrodes (also referred to as pixel electrodes) 131 distributed at intervals; the second electrode layer 14 may include a plurality of second electrodes (also referred to as common electrodes) 141 positioned opposite to the plurality of first electrodes 131, and the plurality of second electrodes 141 may be electrically connected to each other. For example, the second electrode layer 14 may be a planar electrode layer, which only includes a closed contour line. As an example, a pixel P may include a first electrode 131 and one or more microstructures 121 (for example, it may be a microstructure 121), or it may be as follows Figure 3 As shown, one microstructure 121 is distributed in two adjacent pixels P.

[0065] In this way, the display control device 2 can apply a voltage signal (which can be called a COM signal, whose voltage value can be represented by CM) to the second electrode layer 14, and in the process of refreshing the image displayed on the electronic ink screen 1, it can apply a corresponding data drive signal to the first electrode 131 included therein according to the pixel data of each pixel P. The data drive signal is a signal that varies within a range defined by a high voltage value (i.e., a voltage value higher than the COM signal, which can be represented by HI) and a low voltage value (i.e., a voltage value lower than the COM signal, which can be represented by LO). For example, if the pixel data of a pixel P is first color pixel data, a first color driving signal is applied to the first electrode 131 of the pixel P, so that after the screen refresh is completed, the first color charged particles in the pixel P are suspended in a position close to the display surface, so that the pixel P displays the first color; if the pixel data of a pixel P is second color pixel data, a second color driving signal is applied to the first electrode 131 of the pixel P, so that after the screen refresh is completed, the second color charged particles in the pixel P are suspended in a position close to the display surface, so that the pixel P displays the second color; if the pixel data of a pixel P is third color pixel data, a third color driving signal is applied to the first electrode 131 of the pixel P, so that after the screen refresh is completed, the third color charged particles in the pixel P are suspended in a position close to the display surface, so that the pixel P displays the third color.

[0066] In some embodiments, see Figure 3 The electronic ink screen 1 may further include a pixel driving circuit 15 disposed on the substrate 11 to apply a data driving signal to each first electrode 131 in the first electrode layer 13. Figure 4The pixel driving circuit 15 may include a plurality of gate lines 151 and a plurality of data lines 152, wherein the plurality of gate lines GL and the plurality of data lines DL are arranged to cross each other, for example, they are arranged perpendicular to each other; the pixel driving circuit 15 may also include a switching device 153 connected to the crossed gate lines GL and data lines DL, for example, a thin film transistor (TFT). The display control device 2 is connected to the plurality of gate lines 151 to input scanning signals to the plurality of gate lines 151 to control the gating of each row of pixels P connected to the plurality of gate lines 151. For example, the display control device 2 can scan the plurality of rows of pixels P row by row, that is, input scanning signals to the plurality of gate lines 151 row by row in the order from the first row of gate lines to the last row of gate lines, so that each switching device 153 connected to the scanned gate lines 151 is in a conducting state. The display control device 2 is connected to a plurality of data lines 152 to input data drive signals to the first electrodes 131 in each selected (scanned) row of pixels P, thereby causing each pixel P to present a corresponding color under the action of the electric field. For example, if CM is 0V, HI is 15V, and LO is -15V, a 0V signal is provided to the second electrode layer, and a data drive signal in the range of -15V to 15V is provided to the first electrode 131 to control the magnitude of the electric field in which the pixel P is located.

[0067] The electronic ink screen 1 has a bistable characteristic. Even if the above-mentioned electric field is cancelled, the electronic ink screen 1 can stay on the last refreshed picture. Therefore, the electronic ink screen 1 does not need continuous power supply to maintain the picture. In this way, the electronic ink display device 100 can achieve low power consumption.

[0068] In some embodiments, see Figure 5 The display control device 2 included in the electronic ink display device 100 includes at least one processor 21 , at least one memory 22 , a gate driver 23 (optional) and a source driver 24 .

[0069] The gate driver 23, also referred to as a gate drive circuit, is configured to output scanning signals to the electronic ink display 1 under the control of at least one processor 21 to control the gating of each row of pixels. This circuit can be provided in either the display control device 2 or the electronic ink display 1. This embodiment is not limited to this, and the gate driver 23 is provided in the display control device 2 as an example.

[0070] The source driver 24 may also be referred to as a source driving circuit, which is configured to output a data driving signal to the electronic ink screen 1 under the control of at least one processor 21 to control the color displayed by each pixel.

[0071] For example, the gate driver 23 and / or the source driver 24 can send a BUSY signal (busy status signal) to the processor 21 to inform the processor 21 of the status of itself (gate driver 23 and / or source driver 24). The processor 21 can determine whether to send a command or data to the gate driver 23 and / or source driver 24 based on the BUSY signal. The processor 21 sends a CLK (clock) signal to the gate driver 23 and the source driver 24 to provide the gate driver 23 and the source driver 24 with the clock required for their operation. In addition, the processor 21 can also send a direct current (DC) signal to the gate driver 23 and the source driver 24 to inform the gate driver 23 and / or the source driver 24 whether to send a command or data next. The source driver 24 may include multiple source driver sub-circuits, and the processor 21 may send a chip select (CS) signal to one of the multiple source driver sub-circuits to select this source driver sub-circuit for signal transmission. For example, the processor 21 may send a start scan command to the gate driver 23 to start scanning the first row of gate lines of the electronic ink screen; and may also send a data drive signal (ie, data) to the source driver 24 .

[0072] The memory 22 can store computer programs and data and may include high-speed random access memory, non-volatile memory such as disk storage devices, flash memory devices, etc., read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, one-time programmable memory (OTP), electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these. The memory 22 can exist independently and be connected to the processor 21 via a communication line. The memory can also be integrated with the processor 21.

[0073] like Figure 5As shown, at least one processor 21 is connected to the gate driver 23, the source driver 24 and at least one memory 22, and calls the data in the memory 22 by running or executing the computer program stored in the memory 22 to control the gate driver 23 and the source driver 24 to output corresponding signals. The at least one processor 21 can be one or more general-purpose central processing units (CPUs), microcontroller units (MCUs), logic devices (Logic), application-specific integrated circuits (ASICs) or integrated circuits for controlling the execution of programs in some embodiments of the present disclosure; wherein the CPU can be a single-core processor (singleCPU) or a multi-core processor (multi-CPU). A processor 21 here can refer to one or more devices, circuits or processing cores for processing data (such as computer program instructions, etc.).

[0074] Continue to see Figure 5 The display control device 2 may further include a temperature sensor 25 connected to the at least one processor 21. The temperature sensor 25 is configured to measure the ambient temperature and send the ambient temperature to the at least one processor 21, so that the at least one processor 21 controls the source driver 24 to output a data drive signal corresponding to the ambient temperature according to the ambient temperature.

[0075] In other embodiments, see Figure 6 The at least one processor 21 in the display control device 2 may include: a first processor 21a and a second processor 21b. As an example, the first processor 21a is a logic device (Logic), and the second processor 21b may be a microprocessor; compared to a microprocessor, a logic device may not include a data transmission function. The at least one memory 22 may include: a first memory 22a and a second memory 22b. As an example, the first memory 22a is a one-time programmable memory, and the second memory 22b is a random access memory. As an example, the first processor 21a can implement its corresponding functions by running a computer program stored in the first memory 22a.

[0076] For example, the first processor 21a, the first memory 22a, the second memory 22b, the gate driver 23, the source driver 24 and the temperature sensor 25 can be integrated together as a display driver chip. The display driver chip and the second processor 21b are electrically connected via a serial peripheral interface (SPI).

[0077] In some embodiments, the communication device 3 is a device for exchanging information with an external device (AP or wireless router), and is connected to at least one processor 21, for example, it can be connected to the second processor 21b, so as to send data or commands to the external device under the control of the processor 21, or receive data or commands sent by the external device. The communication device 3 can be a transceiver, a transceiver circuit, a transmitter, a receiver, etc.; for example, it can be a wireless communication device such as a Wi-Fi (Wireless-Fidelity, wireless network) device, a Bluetooth device, or a wired communication device such as a Universal Serial Bus (USB) interface. Among them, the Wi-Fi device provides the electronic ink display device 100 with network access that complies with Wi-Fi related standard protocols. The Bluetooth device can be an integrated circuit or a Bluetooth chip, etc. As an example, the communication device 3 and the processor 21 can be provided separately or integrated together, for example, the communication device 3 can be integrated with the second processor 21b.

[0078] In some embodiments, the communication peer device 200 may be a server or a terminal. The terminal may be a personal computer (PC), such as a desktop, laptop, tablet, or ultrabook, or a handheld terminal such as a mobile phone.

[0079] Based on the electronic ink display device introduced above, some embodiments of the present disclosure provide a control method for an electronic ink screen 1, the execution subject of which can be the above-mentioned display control device 2, or a product including the above-mentioned display control device 2, such as the electronic ink display device 100. The following takes the electronic ink screen including multiple pixels, at least one pixel including first color charged particles, second color charged particles and third color charged particles, and the first color is black, the second color is a color (such as red), and the third color is white as an example to illustrate the control method of the electronic ink screen. The electrical properties of the black charged particles and the colored charged particles are the same or approximately the same, for example, both are 11V to 15V, and the charge of the black charged particles is greater than the charge of the colored charged particles, for example, the charge of the colored charged particles is 4V to 7V.

[0080] In an electronic ink display device, each color of charged particles has a corresponding drive signal, which is configured to drive the charged particles of the corresponding color to move in order to achieve display. For example, the first color drive signal is a black drive signal, which is configured to drive the black charged particles to move so that pixels in the electronic ink screen that are to display black display black; the second color drive signal is a color drive signal, which is configured to drive the colored charged particles to move so that pixels in the electronic ink screen that are to display color display color; and the third color drive signal is a white drive signal, which is configured to drive the white charged particles to move so that pixels in the electronic ink screen that are to display white display white. By inputting the corresponding drive signal to the pixels in the electronic ink screen that are to display the target color and that are to be displayed, the target image can be displayed.

[0081] like Figure 2 and Figure 3 As shown, the display control device 2 can apply a voltage signal (which can be called a COM signal, whose voltage value can be represented by CM) to the second electrode layer 14 in the electronic ink screen 1. In the process of refreshing the image displayed by the electronic ink screen 1, a corresponding data drive signal can be applied to the first electrode 131 included therein according to the pixel data of each pixel P. The data drive signal can be a first color drive signal, a second color drive signal, or a third color drive signal, each of which has a corresponding voltage waveform. It can be understood that when the voltage waveform of the data drive signal is at a high level in a certain driving phase, for example, the voltage value of the high level is greater than the voltage value CM of the COM signal, a first electric field is formed in the pixel, directed from the first electrode 131 to the second electrode 141. Under the action of the first electric field, the black particles and the red particles move toward the side of the display surface closer to the electronic display screen, and the white particles move toward the side of the display surface farther away from the electronic display screen. When the voltage waveform of the data drive signal in a certain driving phase is at a low level, for example, the voltage value of the low level is less than the voltage value CM of the COM signal, a second electric field is formed in the pixel, directed from the second electrode 141 toward the first electrode 131. Under the action of the second electric field, the black and red particles move toward the side of the display surface away from the electronic display screen, and the white particles move toward the side of the display surface closer to the electronic display screen. When the voltage waveform of the data drive signal in a certain driving phase is at a reference level, for example, the voltage value of the reference level is equal to the voltage value CM of the COM signal, no electric field exists in the pixel, and the black, red, and white particles do not move under the action of the electric field.

[0082] The "high level" and "low level" mentioned in the present disclosure are relative to the voltage value CM of the voltage signal applied to the second electrode layer 14. For example, the voltage value of the high level is 15V, the voltage value of the low level is -15V, and the voltage value CM of the COM signal is 0V, that is, the voltage value of the reference level is 0V.

[0083] like Figure 7 As shown, the control method of the electronic display screen may include the following steps:

[0084] S101: Acquire a picture to be displayed (ie, a target picture).

[0085] Take the electronic ink display device 100 as an example of an electronic price tag. The to-be-displayed image of the electronic price tag can be considered as an image that has been input into the electronic price tag but has not yet been displayed. Figure 8 The picture shown in (a) includes only black and white colors, that is, the picture to be displayed includes only black pixel data and white pixel data; it can also be as follows Figure 8 The picture shown in (b) includes three colors: black, white and color (for example, red), that is, the picture to be displayed includes black pixel data, white pixel data and color pixel data; it can also be as follows Figure 8 The picture shown in (c) includes two colors: white and color, that is, the picture to be displayed includes white pixel data and color pixel data; it can also be as follows Figure 8 The picture shown in (d) includes two colors: black and color, that is, the picture to be displayed includes black pixel data and color pixel data; of course, it can also be as follows Figure 8 The picture shown in (e) is a color picture (for example, a red picture is displayed in full screen), and the picture to be displayed includes color pixel data.

[0086] The picture to be displayed includes multiple pixel data, and each pixel data can be composed of two bits of bit data. The two bits of bit data determine the color displayed by the pixel corresponding to the pixel data in the electronic ink screen 1. Specifically, if the pixel corresponding to a pixel data displays black, the pixel data is called black pixel data, and correspondingly, white pixel data and color pixel data have similar meanings. For example, the pixel data includes four forms: 00, 01, 10 and 11. Among them, 00 represents black pixel data; 01 represents white pixel data; 10 and 11 represent color pixel data, that is, when the first bit data of a pixel data is 1, the pixel data is color pixel data, otherwise the pixel data is black pixel data or white pixel data.

[0087] For example, the communication peer device 200 can send the image to be displayed to the electronic ink display device 100 via a wireless router or a wireless access point (AP) 300. In the electronic ink display device 100, Figure 5 The at least one processor 21 shown can receive the image to be displayed through the communication device 3 and store it in at least one memory 22. For example, see Figure 6 The second processor 21b in the display control device 2 can obtain the picture to be displayed through the communication device 3 and send the picture to be displayed to the first processor 21a. The first processor 21a receives the picture to be displayed and stores it in the second memory 22b.

[0088] Another example, Figure 5 One or more screens may be stored in at least one memory 22 shown. For example, the screen may be a screen to be displayed that is pre-configured before the electronic display device leaves the factory. For another example, the screen may also be a template screen. For an electronic price tag, the template screen may include a sub-screen that displays fixed content (i.e., non-adjustable content) and a sub-screen that displays variable content (i.e., adjustable content). The fixed content may include content applicable to different categories, such as supermarket names and discount reminders, and the variable content may include content such as category and price information. The sub-screen that displays variable content may be a white sub-screen. For example, Figure 9 The template image of a type of commodity (e.g., red wine) is shown. The template image can be read by at least one processor 21 as a to-be-displayed image, so as to drive the electronic ink screen 1 to display the template image according to subsequent steps. Of course, after the at least one processor 21 receives the information including the to-be-displayed content sent by the communication peer device 200 through the communication device 3, the template image can be updated according to the information of the variable content to generate a new to-be-displayed image (e.g., Figure 8 The screen to be displayed includes a sub-screen displaying fixed content and a sub-screen capable of presenting content to be displayed. The new screen to be displayed may also be stored in at least one memory 22 (eg, the second memory 22b).

[0089] Next, execute S102.

[0090] S102: Output a first color driving signal to pixels on the electronic ink screen that are to display a first color, output a second color driving signal to pixels on the electronic ink screen that are to display a second color, and output a third color driving signal to pixels on the electronic ink screen that are to display a third color. The first color driving signal is a black driving signal B, the second color driving signal is a color driving signal C, and the third color driving signal is a white driving signal W.

[0091] For example, when the image to be displayed includes color pixel data, a color driving signal C is output to the pixels to be displayed in the electronic ink screen. Figure 8 When the picture shown in (b), (c), (d) or (e) is colored, a color driving signal C is output to the pixel to be displayed in the electronic ink screen.

[0092] Similarly, when the image to be displayed includes black pixel data, a black driving signal B is output to the pixels to be displayed black in the electronic ink screen. Figure 8 When the picture shown in (a), (b) or (d) is black, a black driving signal B is output to the pixels to be displayed in black in the electronic ink screen.

[0093] When the image to be displayed includes white pixel data, a white driving signal W is output to the pixels to be displayed white in the electronic ink screen. Figure 8 When the picture shown in (a), (b) or (c) is white, a white driving signal W is output to the pixel to be displayed in white in the electronic ink screen.

[0094] The above-mentioned pixels to be displayed in black refer to pixels corresponding to black pixel data in the image to be displayed, pixels to be displayed in white refer to pixels corresponding to white pixel data in the image to be displayed, and pixels to be displayed in color refer to pixels corresponding to color pixel data in the image to be displayed. It should be noted that the refresh processes of pixels to be displayed in different colors are synchronized, such as Figures 10A to 10C As shown, the entire process of driving an electronic ink display using the above-mentioned electronic ink display control method includes multiple driving stages, for example, the multiple driving stages are Stage 1 to Stage 10. The driving duration of each driving stage can be the same or different. The first color driving signal, the second color driving signal, and the third color driving signal each include multiple sub-signals corresponding to the multiple driving stages. Each sub-signal can correspond to at least one driving stage, for example, one sub-signal corresponds to one driving stage, or one sub-signal corresponds to two adjacent driving stages. The following describes the multiple sub-signals included in the first color driving signal, the second color driving signal, and the third color driving signal.

[0095] like Figures 10A to 10C As shown, the duration TB of the black driving signal B, the duration TW of the white driving signal W, and the duration TC of the color driving signal C are equal or substantially equal. The three durations being substantially equal means that the absolute value of the difference between any two of them is less than or equal to a preset value.

[0096] The first color driving signal B is described below.

[0097] In some embodiments, as Figures 10A to 10C As shown, the first color driving signal (black driving signal B) includes multiple sub-signals corresponding to multiple driving stages, and the multiple sub-signals include a first color imaging sub-signal B6 and a particle separation sub-signal BB'. The driving stage corresponding to the particle separation sub-signal BB' is at least one driving stage before the driving stage stage6 corresponding to the first color imaging sub-signal.

[0098] The first color imaging sub-signal B6 is configured to drive the first color charged particles in the pixel to move toward the side closer to the display surface of the electronic ink display, so that the pixel to display the first color displays the first color. For example, the black imaging sub-signal B6 is configured to drive the black charged particles BG in the pixel to move toward the side closer to the display surface of the electronic ink display, so that the pixel to display black displays black.

[0099] It is understandable that in Figures 10A to 10C As shown, the black imaging sub-signal B6 includes a high level that lasts for 17 unit time periods, and the voltage value of the high level is HI, which is greater than the voltage value CM of the COM signal, thereby forming a first electric field in the pixel from the first electrode 131 to the second electrode 141. Under the action of the first electric field, the black charged particles BG move toward the side close to the display surface of the electronic ink screen, and the colored charged particles CG have the same electrical properties as the black charged particles BG. At the same time, the colored charged particles CG also move toward the side close to the display surface of the electronic ink screen.

[0100] The particle separation sub-signal BB' is configured to drive the first color charged particles and the second color charged particles in the pixel to move and separate the first color charged particles from the second color charged particles. For example, the particle separation sub-signal BB' is configured to drive the black charged particles BG and the color charged particles CG in the pixel to move and separate the black charged particles BG from the color charged particles CG.

[0101] In an electronic display screen, when the black driving signal B does not include the particle separation signal BB', in the sixth driving stage stage6, the black charged particles BG in the pixel are driven to move toward the side of the display surface close to the electronic ink screen by the black imaging sub-signal B6. Since the black charged particles BG and the colored charged particles CG have the same electrical properties, the colored charged particles CG will also move toward the side of the display surface close to the electronic ink screen under the action of the black imaging sub-signal B6. Moreover, when the electronic display screen is displayed for a long time, the activity of the particles decreases. Under the action of the driving signal, the black charged particles BG and the colored charged particles CG move in the same direction and cannot be separated. This will cause the pixels to be displayed in black to have some colored charged particles CG mixed in addition to the black charged particles BG near the display surface, thereby causing imaging deviation, that is, the pixels to be displayed in black also display red, resulting in the black-reddish problem mentioned in the related art.

[0102] Some embodiments of the present disclosure provide a control method for an electronic ink screen. For a first color driving signal (black driving signal B), a particle separation sub-signal BB' is set before the black imaging sub-signal B6. In this way, before the black imaging sub-signal B6 drives the black charged particles BG in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to be displayed black displays black, the particle separation sub-signal BB' is used to separate the black charged particles BG and the color charged particles CG, so that the black charged particles BG and the color charged particles CG are layered, with a certain distance between the two. In this way, in the driving stage stage6 corresponding to the black imaging sub-signal B6, in the pixel to be displayed black, the black charged particles BG move to the side close to the display surface of the electronic ink screen under the drive of the black imaging sub-signal B6. Even though the colored charged particles CG will move toward the side of the display surface close to the electronic ink screen under the drive of the first color imaging sub-signal B6, since the black charged particles BG and the colored charged particles CG have been separated in the stage before the driving stage stage6, in the driving stage stage6, there is still a certain distance between the black charged particles BG and the colored charged particles CG, that is, the black charged particles BG are located on the side of the display surface close to the electronic display screen compared with the colored charged particles CG. The black charged particles BG are on the upper layer of the colored charged particles CG, and the pixels to be displayed black will not display red, thereby avoiding the black-reddish phenomenon and the problem of imaging deviation.

[0103] The particle separation sub-signal BB′ included in the first color driving signal (black driving signal B) is introduced below.

[0104] In some embodiments, as Figure 10AAs shown, the particle separation sub-signal BB′ includes a first particle separation sub-signal B5 , and the driving stage stage5 corresponding to the first particle separation sub-signal B5 is a driving stage before the driving stage stage6 corresponding to the first color imaging sub-signal B6 .

[0105] The first particle separation sub-signal B5 is a first color fader signal B5 (black fader signal B5). The first color fader signal B5 is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and to separate the first color charged particles and the second color charged particles. In other words, the black fader signal B5 is configured to drive the black charged particles and the colored charged particles to move toward a side away from the display surface of the electronic ink screen, and to separate the black charged particles from the colored charged particles.

[0106] like Figure 10A As shown, the black fader signal B5 includes a low level and a reference level that are arranged alternately in sequence, and the duration of the low level is less than the duration of the reference level. Exemplarily, the black fader signal B5 includes a low level that lasts for 5 unit time periods, a reference level that lasts for 32 unit time periods, a low level that lasts for 5 unit time periods, and a reference level that lasts for 32 unit time periods, which are arranged in sequence. Under the action of the black fader signal B5, a second electric field is formed in the pixel to be displayed black, directed from the second electrode 141 to the first electrode 131. Under the action of the second electric field, both the black charged particles BG and the colored charged particles CG move toward the side away from the display surface of the electronic ink screen. Since the charge of the black charged particles BG is greater than the charge of the color charged particles CG, under the action of the same black fader signal B5, the movement speed of the black charged particles BG is faster than that of the color charged particles CG. Therefore, compared with the color charged particles CG, the black charged particles BG run to the side of the display surface that is farther away from the electronic display screen, that is, the position of the black charged particles BG is in the lower layer of the position of the color charged particles CG, so that there is a certain distance between the black charged particles BG and the color charged particles CG, thereby achieving separation.

[0107] In the sixth driving stage Stage6, under the action of the black imaging sub-signal B6, the black charged particles BG and the colored charged particles CG move toward the side of the display surface close to the electronic display screen. Since the charge of the black charged particles BG is greater than the charge of the colored charged particles CG, under the action of the same black imaging sub-signal B6, the black charged particles BG move faster than the colored charged particles CG. Compared with the colored charged particles CG, the black charged particles BG run to the side of the display surface closer to the electronic display screen. It can be understood that in the movement of the black charged particles BG and the colored charged particles CG in the sixth driving stage Stage6, the black charged particles BG as a whole pass through the colored charged particles CG as a whole, and finally the position of the black charged particles BG is on the upper layer of the position of the colored charged particles CG. There is still a certain distance between the black charged particles BG and the colored charged particles CG, so that the pixels to be displayed black are displayed in black, and no red is mixed in the display, thereby avoiding the problem of imaging deviation.

[0108] In some examples, such as Figure 10A As shown, when the particle separation sub-signal BB' includes the first particle separation sub-signal B5, the first color drive signal B also includes a first color first dithering sub-signal B4. The driving stage stage4 corresponding to the first color first dithering signal B4 is a driving stage before the driving stage stage5 corresponding to the first particle separation sub-signal B5. The first color first dithering sub-signal B4 includes a first level (high level) and a second level (low level) that appear alternately in time sequence. The duration of the first level is equal to the duration of the second level. For example, the duration of the first level and the duration of the second level are both 4 unit time. The first level is configured to drive the first color charged particles and the second color charged particles to move toward the side close to the display surface of the electronic ink screen. This motion is called a push-black motion. The second level is configured to drive the first color charged particles and the second color charged particles to move toward the side away from the display surface of the electronic ink screen (i.e., drive the third color charged particles to move toward the side close to the display surface of the electronic ink screen). This motion is called a push-white motion.

[0109] The first color first dithering sub-signal B4 is configured to drive the first color charged particles and the second color charged particles to swing, and sets the duration of the first level to be equal to the duration of the second level. On the one hand, it can achieve the separation of the first color charged particles and the second color charged particles by making the first color charged particles and the second color charged particles swing. On the other hand, it avoids the problem of imaging deviation caused by the unequal duration of the black-pushing motion and the white-pushing motion, such as the problem of insufficient black chroma displayed by the sub-pixel to display black and insufficient white chroma displayed by the sub-pixel to display white.

[0110] In some embodiments, as Figure 10B As shown, the particle separation sub-signal BB′ includes a second particle separation sub-signal B4 , and the driving stage Stage 4 corresponding to the second particle separation sub-signal B4 is a driving stage before the driving stage Stage 6 corresponding to the first color imaging sub-signal B5 .

[0111] The second particle separation sub-signal B4 includes a first color first dithering sub-signal B4, the first color first dithering sub-signal B4 includes a first level and a second level that appear alternately in time sequence, and the duration of the first level is shorter than the duration of the second level. Figure 10B As shown, the first dithering sub-signal B4 of the first color includes a first level with a duration of 3 unit time periods, a second level with a duration of 4 unit time periods, a first level with a duration of 3 unit time periods, and a second level with a duration of 4 unit time periods, which are arranged in sequence. The first level is a high level with a voltage value of HI, and the second level is a low level with a voltage value of LO.

[0112] The second particle separation signal B4 is configured to drive the first and second color charged particles to oscillate. The first level is configured to drive the first and second color charged particles toward the side closer to the display surface of the electronic ink screen, while the second level is configured to drive the first and second color charged particles toward the side farther from the display surface of the electronic ink screen. Here, oscillation of the first and second color charged particles refers to the reciprocating motion of the first and second color charged particles within the pixel.

[0113] Driven by the second particle separation signal B4, a first electric field directed from the first electrode 131 to the second electrode 141 and a second electric field directed from the second electrode 141 to the first electrode 131 are alternately formed in the pixel to be displayed in black, so that the black charged particles BG and the colored charged particles CG move back and forth under the action of the first electric field and the second electric field, so that the black charged particles BG and the colored charged particles CG swing. Since the duration of the first level is shorter than the duration of the second level, that is, the black charged particles BG and the colored charged particles CG are affected by the second electric field for a longer time, and the duration of the white-pushing movement is longer than the duration of the black-pushing movement, the black charged particles BG and the colored charged particles CG both move toward the side away from the display surface of the electronic ink screen under the action of the longer white-pushing movement. Since the charge of the black charged particles BG is greater than the charge of the colored charged particles CG, under the action of the same second electric field, the black charged particles BG move faster than the colored charged particles CG. Therefore, compared with the colored charged particles CG, the black charged particles BG run to the side farther away from the display surface of the electronic display screen, that is, the position of the black charged particles BG is below the position of the colored charged particles CG, so that there is a certain distance between the black charged particles BG and the colored charged particles CG, thereby achieving separation.

[0114] Next, in the sixth driving stage Stage6, under the action of the black imaging sub-signal B6, the black charged particles BG and the colored charged particles CG move toward the side of the display surface close to the electronic display screen. Since the charge of the black charged particles BG is greater than the charge of the colored charged particles CG, under the action of the same black imaging sub-signal B6, the black charged particles BG move faster than the colored charged particles CG. Compared with the colored charged particles CG, the black charged particles BG run to the side of the display surface closer to the electronic display screen. It can be understood that in the movement of the black charged particles BG and the colored charged particles CG in the sixth driving stage Stage6, the black charged particles BG as a whole pass through the colored charged particles CG as a whole, and finally the position of the black charged particles BG is on the upper layer of the position of the colored charged particles CG. There is still a certain distance between the black charged particles BG and the colored charged particles CG, so that the pixels to be displayed black are displayed in black, and no red is mixed in the display, thereby avoiding the problem of imaging deviation.

[0115] In some examples, such as Figure 10BAs shown, the first color driving signal B includes an electric field cancellation sub-signal B5 corresponding to the fifth driving stage Stage5. The voltage waveform of the electric field cancellation sub-signal B5 is a reference level, and its voltage value is CM. Therefore, in the fifth driving stage Stage5, there is no electric field in the pixel to be displayed black, and the electric field cancellation sub-signal B5 will not drive the black charged particles BG and the color charged particles CG, and will not affect the separation effect of the second particle separation signal B4 on the black charged particles BG and the color charged particles CG.

[0116] In other embodiments, Figure 10C As shown, particle separation sub-signal BB' includes a first particle separation sub-signal B4 and a second particle separation sub-signal B5. The driving stage Stage 5 corresponding to the first particle separation sub-signal B5 precedes the driving stage Stage 6 corresponding to the first color imaging sub-signal B6. The driving stage Stage 4 corresponding to the second particle separation sub-signal B4 precedes the driving stage Stage 5 corresponding to the first particle separation sub-signal B5. In other words, particle separation sub-signal BB' includes sub-signals corresponding to two consecutive driving stages.

[0117] The first particle separation sub-signal B5 includes a first color fader signal B5, which is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, thereby separating the first color charged particles and the second color charged particles. Specifically, the black fader signal B5 is configured to drive the black charged particles and the colored charged particles to move toward a side away from the display surface of the electronic ink screen, thereby separating the black charged particles from the colored charged particles.

[0118] The second particle separation sub-signal B4 includes a first color first dithering sub-signal B4, which includes a first level and a second level that appear alternately in time sequence. The duration of the first level is shorter than the duration of the second level.

[0119] The second particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles to swing, wherein the first level is configured to drive the first color charged particles and the second color charged particles to move toward the side close to the display surface of the electronic ink screen, and the second level is configured to drive the first color charged particles and the second color charged particles to move toward the side away from the display surface of the electronic ink screen.

[0120] like Figure 10CAs shown, before the sixth driving stage Stage6, that is, before the first color imaging sub-signal B6 drives the black charged particles BG in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the first color charged particles and the second color charged particles are separated before the pixels to be displayed black display black.

[0121] First, in the fourth driving stage Stage 4, under the driving action of the second particle separation signal B4, a first electric field pointing from the first electrode 131 to the second electrode 141 and a second electric field pointing from the second electrode 141 to the first electrode 131 are alternately formed in the pixel to be displayed black, so that the black charged particles BG and the color charged particles CG move back and forth under the action of the first electric field and the second electric field, so that the black charged particles BG and the color charged particles CG swing. Since the duration of the first level is shorter than the duration of the second level, that is, the black charged particles BG and the colored charged particles CG are affected by the second electric field for a longer time, and the duration of the white-pushing movement is longer than the duration of the black-pushing movement, the black charged particles BG and the colored charged particles CG both move toward the side away from the display surface of the electronic ink screen under the action of the longer white-pushing movement. Since the charge of the black charged particles BG is greater than the charge of the colored charged particles CG, under the action of the same second electric field, the black charged particles BG move faster than the colored charged particles CG. Therefore, compared with the colored charged particles CG, the black charged particles BG run to the side farther away from the display surface of the electronic display screen, that is, the position of the black charged particles BG is below the position of the colored charged particles CG, so that there is a certain distance between the black charged particles BG and the colored charged particles CG, thereby achieving separation.

[0122] Then, in the fifth driving stage Stage 5, under the action of the black fader signal B5, a second electric field is formed in the pixel to be displayed black, which is directed from the second electrode 141 to the first electrode 131. Under the action of the second electric field, both the black charged particles BG and the color charged particles CG move toward the side away from the display surface of the electronic ink screen. Since the charge of the black charged particles BG is greater than the charge of the color charged particles CG, under the action of the same black fader signal B5, the black charged particles BG move faster than the color charged particles CG. As a result, compared with the color charged particles CG, the black charged particles BG are more likely to move faster. It runs to the side of the display surface that is farther away from the electronic display screen, that is, the position of the black charged particles BG is in the lower layer of the position of the colored charged particles CG, so that there is a certain distance between the black charged particles BG and the colored charged particles CG. Therefore, on the basis of the previous driving stage, the black charged particles BG and the colored charged particles CG are further separated, and the separation effect of the black charged particles BG and the colored charged particles CG is enhanced through the joint action of the first particle separation sub-signal B4 and the second particle separation sub-signal B5, thereby effectively avoiding the occurrence of black reddishness when the pixel displaying black displays black.

[0123] In some embodiments, the multiple sub-signals included in the first color driving signal B further include a first color balance sub-signal B1 , and the driving stage corresponding to the first color balance sub-signal B1 is the first driving stage Stage 1 among the multiple driving stages.

[0124] The first color balance sub-signal B1 is configured to position the first color charged particles at an initial position; the initial position is the position of the first color charged particles when a pixel to display the first color is not driven by the first color drive signal. For example, the first color balance sub-signal B1 is configured to position the black charged particles at an initial position; the initial position is the position of the black charged particles when a pixel to display black is not driven by the black drive signal B, for example, when the black charged particles are uniformly distributed across the pixel.

[0125] In this way, the first color charged particles are positioned at their initial positions by the first color balance sub-signal B1, which can balance the movement of the first color charged particles and prevent the imaging deviation problem caused by excessive pushing times of the first color charged particles.

[0126] In some examples, such as Figures 10A to 10C As shown, the first color balance sub-signal B1 includes a reference level, a third level, a fourth level, and a reference level arranged in sequence, wherein the voltage value of the reference level is CM.

[0127] The polarity of the third level is opposite to that of the first color imaging sub-signal. Here, the polarity of the first color imaging sub-signal refers to the polarity of the level in the first color imaging sub-signal that drives the first color charged particles. For example, if the first color imaging sub-signal B6 includes a high level with a duration of 17 time units, and the voltage value of the high level is HI, and the voltage value of the reference level CM is 0V, the polarity of the first color imaging sub-signal is positive, then the polarity of the third level is negative, and the voltage value of the third level is LO.

[0128] like Figure 10A and Figure 10C As shown, when the particle separation sub-signal BB' includes the first particle separation sub-signal B5, the polarity of the fourth level is opposite to the polarity of the first particle separation sub-signal B5. Here, the polarity of the first particle separation sub-signal B5 refers to the polarity of the level in the first particle separation sub-signal B5 that drives the first color charged particles. For example, if the first particle separation sub-signal B5 includes a low level with a duration of 5 time units, the voltage value of the low level is LO. Taking the voltage value of the reference level CM as 0V as an example, if the polarity of the first particle separation sub-signal B5 is negative, the polarity of the fourth level is positive, and the voltage value of the fourth level is HI.

[0129] like Figure 10B and Figure 10C As shown, when the particle separation sub-signal BB' includes the second particle separation sub-signal B4, the second particle separation sub-signal B4 includes a first level and a second level that appear alternately in time sequence, and the polarity of the fourth level is opposite to that of the second level. The second level is a low level, and its voltage value is LO. Taking the reference level voltage value CM as 0V as an example, if the polarity of the second level is negative, the polarity of the fourth level is positive, and the voltage value of the fourth level is HI.

[0130] As a possible design, to balance the movement of the first-color charged particles, the durations of the reference level, third level, fourth level, and reference level (sequentially arranged in sequence) in the first color balancing sub-signal B1 are set so that the first-color charged particles return to their initial positions when the pixels to display the first color are not driven by the first-color drive signal. Exemplarily, at least one processor in the display control device sets the durations of the high and low levels of each sub-signal in the first-color drive signal B through calculation and data compensation, such that the total duration of the high and low levels in the first-color drive signal B is equal, thereby achieving ultimate balance.

[0131] For example, Figure 10CAs shown, the first color balance sub-signal B1 includes a reference level with a duration of 10 unit times, a third level (low level) with a duration of 2 unit times, a fourth level (high level) with a duration of 18 unit times, and a reference level with a duration of 1 unit time, which are arranged in sequence.

[0132] In some embodiments, as Figure 10C As shown, the first color driving signal B includes sub-signals corresponding to at least seven driving stages, wherein the first color driving signal B includes the sub-signals corresponding to the first driving stage Stage 1 to the sub-signals corresponding to the seventh driving stage Stage 7, which are: a first color balancing sub-signal B1, a first color second dithering sub-signal B2, a first color third dithering sub-signal B3, a first color first dithering sub-signal B4, a first color push-down sub-signal B5, a first color imaging sub-signal B6, and an electric field cancellation sub-signal B7.

[0133] The first color balance sub-signal B1 is configured to position the first color charged particles at an initial position; wherein the initial position is the position of the first color charged particles when the pixel to display the first color is not driven by the first color driving signal.

[0134] The first color second dithering sub-signal B2 is configured to drive the first color charged particles to oscillate. For example, the first color second dithering sub-signal B2 can drive the black charged particles to oscillate in advance.

[0135] The first color third dithering sub-signal B3 is configured to drive the first color charged particles to continue to oscillate. For example, the first color second dithering sub-signal B3 can drive the black charged particles to continue to oscillate.

[0136] The first color second dithering sub-signal B2 and the first color third dithering sub-signal B3 can keep the black charged particles BG moving to avoid the afterimage phenomenon.

[0137] The first color first dithering sub-signal B4 is configured to drive the first color charged particles and the second color charged particles to oscillate and separate the first color charged particles from the second color charged particles. For example, the first color first dithering sub-signal B4 can drive the black charged particles BG and the color charged particles CG to continue oscillating. Because the duration of the first voltage wave in the first color first dithering sub-signal B4 is shorter than the duration of the second voltage wave, the black charged particles BG and the color charged particles CG can be moved to separate, with the black charged particles BG located below the color charged particles CG, i.e., the black charged particles BG are located on the side of the color charged particles CG away from the display surface of the electronic ink screen.

[0138] The first color fader signal B5 is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, thereby separating the first color charged particles and the second color charged particles. For example, the first color fader signal B5 is a push-to-white signal, which can drive the black charged particles BG and the color charged particles CG to move toward a side away from the display surface of the electronic ink screen. At this stage, the black charged particles BG are located below the color charged particles CG, and the white charged particles WG are located above the color charged particles CG, that is, toward the display surface.

[0139] The first color imaging sub-signal B6 is configured to drive the first color charged particles in the pixel to move toward the side of the display surface close to the electronic ink screen, so that the pixel to be displayed with the first color displays the first color. For example, the first color imaging sub-signal B6 can drive the black charged particles BG to move toward the side of the display surface close to the electronic ink screen. At the same time, the colored charged particles CG also move toward the side of the display surface close to the electronic ink screen under the action of the first color imaging sub-signal B6. Because the black charged particles BG and the colored charged particles CG are separated under the combined action of the first color first dither sub-signal B4 and the first color fader signal B5, in the sixth driving stage Stage 6, the black charged particles BG are located close to the display surface, and the colored charged particles CG are not mixed with the black charged particles BG.

[0140] Electric field cancellation sub-signal B7 is configured to cancel the driving of the first-color charged particles. This signal is used to reduce the electric field within the pixel to zero. The voltage waveform of electric field cancellation sub-signal B7 is at a reference level, which is the same as the voltage of the second electrode layer. This eliminates the voltage difference between the first and second electrodes in the pixel, and simultaneously keeps the black charged particles in the pixel close to the display surface due to inertia.

[0141] In some embodiments, the first color driving signal B also includes sub-signals corresponding to the eighth driving stage Stage8 to the tenth driving stage Stage10, and the multiple sub-signals are respectively the electric field cancellation sub-signal B8, the electric field cancellation sub-signal B9 and the electric field cancellation sub-signal B10, that is, in the eighth driving stage Stage8 to the tenth driving stage Stage10, the first color driving signal B no longer drives the first color charged particles. The electronic ink screen 1 has a bistable characteristic. Even if the electric field in the electronic ink screen is cancelled, the electronic ink screen 1 can stay on the last refreshed screen. Therefore, the black particles in the pixels to be displayed black are still in the state of the sixth driving stage Stage6 in the eighth driving stage Stage8 to the tenth driving stage Stage10, so that the pixels to be displayed black can continue to display black.

[0142] As an example, compare Figure 10C , the first color driving signal B can be expressed as:

[0143] {CM,LO,HI,CM}, / / corresponds to the sub-signal of the first driving stage Stage1

[0144] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the second driving stage Stage2

[0145] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the third driving stage Stage3

[0146] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the fourth driving stage Stage4

[0147] {LO,CM,LO,CM}, / / corresponds to the sub-signal of the fifth driving stage Stage5

[0148] {CM,CM,HI,CM}, / / corresponds to the sub-signal of the sixth driving stage Stage 6

[0149] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the seventh driving stage Stage7

[0150] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the eighth driving stage Stage8

[0151] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the ninth driving stage Stage9

[0152] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the tenth driving stage Stage 10

[0153] Each row represents a cycle unit in the sub-signal corresponding to a driving phase, that is, a cycle unit includes the above four parts. From the above data, we can see the voltage value of each of the four parts included in each cycle unit.

[0154] See also Figure 10CThe numbers marked on each waveform of the first color drive signal B correspond to a cycle unit in the sub-signal of each driving stage, which includes four parts, and the voltage amplitude of each part is different, and the number of cycle units included in the sub-signal of each driving stage is also different. The duration of the four parts included in a cycle unit in the sub-signal of each driving stage, and the number of repetitions (cycle number, i.e., the number of cycles of the four parts) of the cycle unit are represented by the following data. Among them, the duration is represented by the number of unit durations, and an example can be a hexadecimal number. For example, a duration of 0x0a represents 10 unit durations.

[0155] {0x0a, 0x02, 0x12, 0x01, 0x04}, / / corresponds to the sub-signal of the first driving stage Stage 1

[0156] {0x05,0x05,0x06,0x06,0x07}, / / corresponds to the sub-signal of the second driving stage Stage 2

[0157] {0x20,0x20,0x20,0x20,0x08}, / / corresponds to the sub-signal of the third driving stage Stage 3

[0158] {0x03,0x04,0x03,0x04,0x24}, / / corresponds to the sub-signal of the fourth driving stage Stage 4

[0159] {0x05,0x20,0x05,0x20,0x06}, / / corresponds to the sub-signal of the fifth driving stage Stage 5

[0160] {0x0a,0x01,0x11,0x01,0x04}, / / corresponding to the sub-signal of the sixth driving stage Stage 6

[0161] {0x02,0x0d,0x02,0x0d,0x02}, / / corresponds to the sub-signal of the seventh driving stage Stage 7

[0162] {0x02,0x0d,0x02,0x0d,0x02}, / / corresponds to the sub-signal of the eighth driving stage Stage 8

[0163] {0x00,0x00,0x00,0x00,0x00}, / / corresponds to the sub-signal of the ninth driving stage Stage 9

[0164] {0x00,0x00,0x00,0x00,0x00}, / / corresponds to the sub-signal of the tenth driving stage Stage 10

[0165] Taking the sub-signal corresponding to the fourth driving stage Stage 4 of the first color drive signal B (first color first dithering signal B4) as an example, the four parts of a cyclic unit include: a high level with a duration of 0x03 and a voltage value of HI, a low level with a duration of 0x04 and a voltage value of LO, a high level with a duration of 0x03 and a voltage value of HI, and a low level with a duration of 0x04 and a voltage value of LO. This cyclic unit is repeated 24 times.

[0166] It should be noted that if Figure 10C As shown, for the second color drive signal C and the third color drive signal W, the second color drive signal C (color drive signal C) includes multiple sub-signals corresponding to multiple drive stages, and the third color drive signal W (white drive signal W) includes multiple sub-signals corresponding to multiple drive stages, and each sub-signal has a corresponding voltage waveform. In the second color drive signal C and the third color drive signal W, the duration of the four parts included in a cyclic unit in the sub-signals corresponding to each drive stage, as well as the number of repetitions of the cyclic unit, are consistent with the duration of the four parts included in a cyclic unit in the sub-signals corresponding to each drive stage of the first color drive signal B, as well as the number of repetitions of the cyclic unit. The difference between the first color drive signal B, the second color drive signal C, and the third color drive signal W lies in the different voltage waveforms.

[0167] The second color driving signal C is introduced below.

[0168] In some embodiments, as Figures 10B to 10C As shown, the second color driving signal C (color driving signal C) includes multiple sub-signals corresponding to multiple driving stages. When the first color driving signal B includes the second particle separation sub-signal B4, the second color driving signal C includes the second color first dithering sub-signal C4. The driving stage corresponding to the second color first dithering sub-signal C4 and the driving stage corresponding to the second particle separation sub-signal B4 are the same driving stage, both of which are the fourth driving stage Stage4.

[0169] The second color first dithering sub-signal C4 includes a fifth level and a sixth level that appear alternately in time sequence. The duration of the fifth level is equal to the duration of the first level, and the duration of the sixth level is equal to the duration of the second level. Since the data of the sub-signals corresponding to the fourth driving stage Stage4 are all {0x03, 0x04, 0x03, 0x04, 0x24}, the second color first dithering sub-signal C4 includes, in sequence, a fifth level with a duration of 3 unit time lengths, a sixth level with a duration of 4 unit time lengths, a fifth level with a duration of 3 unit time lengths, and a sixth level with a duration of 4 unit time lengths. The fifth level is a high level with a voltage value of HI, and the sixth level is a low level with a voltage value of LO. In other words, the duration of the fifth level of the second color first dithering sub-signal C4 is less than the duration of the sixth level.

[0170] The second-color first dither sub-signal C4 is configured to drive the first-color and second-color charged particles to oscillate. The fifth level is configured to drive the first-color and second-color charged particles toward the side closer to the display surface of the electronic ink screen, and the sixth level is configured to drive the first-color and second-color charged particles toward the side farther from the display surface of the electronic ink screen. Here, oscillation of the first-color and second-color charged particles refers to the reciprocating motion of the first-color and second-color charged particles within the pixel.

[0171] Driven by the second color first dithering sub-signal C4, a first electric field directed from the first electrode 131 to the second electrode 141 and a second electric field directed from the second electrode 141 to the first electrode 131 are alternately formed in the pixel to be displayed. As a result, the black charged particles BG and the color charged particles CG move back and forth under the action of the first electric field and the second electric field, causing the black charged particles BG and the color charged particles CG to swing. Since the duration of the fifth level is shorter than the duration of the sixth level, that is, the black charged particles BG and the colored charged particles CG are affected by the second electric field for a longer time, and the duration of the white-pushing movement is longer than the duration of the black-pushing movement, the black charged particles BG and the colored charged particles CG both move toward the side away from the display surface of the electronic ink screen under the action of the longer white-pushing movement. Since the charge of the black charged particles BG is greater than the charge of the colored charged particles CG, under the action of the same second electric field, the black charged particles BG move faster than the colored charged particles CG. Therefore, compared with the colored charged particles CG, the black charged particles BG run to the side farther away from the display surface of the electronic display screen, that is, the position of the black charged particles BG is below the position of the colored charged particles CG, so that there is a certain distance between the black charged particles BG and the colored charged particles CG, thereby achieving separation.

[0172] In this way, the second color first dithering sub-signal C4 can separate the black charged particles BG and the color charged particles CG in the pixel to be displayed, thereby avoiding the imaging deviation problem caused by the inability to separate the particles in the subsequent driving stage.

[0173] In some embodiments, as Figure 10C As shown, the second color driving signal C includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage Stage 1 to the seventh driving stage Stage 7 included in the second color driving signal C are: a second color flip sub-signal C1, a second color balance sub-signal C2, a second color second dithering sub-signal C3, a second color first dithering sub-signal C4, a second color pre-imaging sub-signal C5, a second color up-fader signal C6, and a second color imaging sub-signal C7.

[0174] The second color inversion sub-signal C1 is configured to drive the second color charged particles to invert, so that the second color charged particles move toward a side close to the display surface of the electronic ink screen.

[0175] The second color balance sub-signal C2 is configured to position the second color charged particles at an initial position; wherein the initial position is the position of the second color charged particles when the pixel to display the second color is not driven by the second color driving signal C.

[0176] The second color flip sub-signal C1 and the second color balance sub-signal C2 have opposite polarities. In the first driving stage Stage1 and the second driving stage Stage2, the second color flip sub-signal drives the colored charged particles to move toward the side close to the display surface of the electronic display screen, and the second color balance sub-signal C2 drives the colored charged particles to move toward the side away from the display surface of the electronic ink screen. Under the joint action of the second color flip sub-signal C1 and the second color balance sub-signal C2, the colored charged particles can be more stably in the initial position, for example, the colored charged particles are evenly dispersed in the pixels, preventing the colored charged particles from being pushed too many times and causing imaging deviation.

[0177] The second color second dithering sub-signal C3 is configured to drive the second color charged particles to swing; for example, the second color second dithering sub-signal C3 can drive the colored charged particles CG to swing in advance.

[0178] The second color first dithering sub-signal C4 is configured to drive the second color charged particles to continue to sway; for example, the second color second dithering sub-signal C4 can drive the colored charged particles CG to continue to sway.

[0179] The second-color second dithering sub-signal C3 and the second-color first dithering sub-signal C4 enable the colored charged particles CG to maintain motion to prevent image sticking. Furthermore, because the duration of the fifth level in the second-color first dithering sub-signal C4 is shorter than the duration of the sixth level, the second-color first dithering sub-signal C4 separates the black charged particles BG from the colored charged particles CG, with the black charged particles BG located below the colored charged particles CG.

[0180] The second color pre-imaging sub-signal C5 is configured to drive the second color charged particles in the pixel to move toward a side closer to the display surface of the electronic ink screen. For example, the second color pre-imaging sub-signal C5 is configured to drive the colored charged particles in the pixel to move toward a side closer to the display surface of the electronic ink screen.

[0181] like Figure 10C As shown, the second color pre-imaging sub-signal C5 includes an eighth level and a ninth level alternately arranged in sequence, wherein the duration of the eighth level is shorter than the duration of the ninth level. Exemplarily, the second color pre-imaging sub-signal C5 includes an eighth level with a duration of 5 time units, a ninth level with a duration of 32 time units, an eighth level with a duration of 5 time units, and a ninth level with a duration of 32 time units. The eighth level is a low level with a voltage value of LO, and the ninth level has a voltage value of RV, which is lower than the high level voltage value HI and higher than the reference level voltage value CM. Exemplarily, LO is -15V, HI is 15V, and RV is 6V. The eighth level is configured to drive the colored charged particles and the black charged particles toward the side away from the display surface of the electronic display, while the ninth level is configured to drive the colored charged particles toward the side closer to the display surface of the electronic display.

[0182] In the fifth driving stage, Stage 5, the black and colored charged particles are first driven by the eighth level of the second color pre-imaging sub-signal C5 to move toward a side away from the display surface of the electronic display screen. Because the charge of the black charged particles is greater than that of the colored charged particles, the black charged particles move to a position further away from the display surface. Under the influence of the ninth level, the colored charged particles move toward a side closer to the display surface of the electronic ink screen. Because the voltage value RV of the ninth level is less than the voltage value HI of the high level, the ninth level is insufficient to drive the movement of the black charged particles (see the voltage value HI or LO of the sub-signal in the first color driving signal that can drive the movement of the black charged particles, i.e., the voltage amplitude needs to be greater than a certain value, such as greater than 15V). Therefore, in this stage, the colored charged particles are located above the black charged particles, closer to the display surface of the electronic ink screen, so that the pixels to be displayed in color display color.

[0183] The second color up-fader signal C6 is configured to drive the second color charged particles in the pixel to move toward a side closer to the display surface of the electronic ink screen. For example, the second color up-fader signal C6 is configured to drive the color charged particles in the pixel to move toward a side closer to the display surface of the electronic ink screen.

[0184] The second color up-fader signal includes a ninth level with a duration of 17 unit times. The voltage value of the ninth level is RV, which is less than the voltage value HI of the high level. Therefore, in the sixth driving stage Stage6, the colored charged particles CG move further toward the side close to the display surface of the electronic ink screen, and the black charged particles do not move with the colored charged particles toward the side close to the display surface of the electronic ink screen.

[0185] The second color imaging sub-signal C7 is configured to drive the second color charged particles in the pixel to move toward the side closer to the display surface of the electronic ink display, so that the pixel to display the second color displays the second color. For example, the second color imaging sub-signal C7 is configured to drive the colored charged particles in the pixel to move toward the side closer to the display surface of the electronic ink display, so that the pixel to display the color displays the color.

[0186] The second color imaging sub-signal C7 includes an eighth level and a ninth level that appear alternately in sequence. For details, please refer to the description of the second color pre-imaging sub-signal C5. The difference between the second color imaging sub-signal C7 and the second color pre-imaging sub-signal C5 is that the duration of each level is different, which will not be repeated here.

[0187] The second color pre-imaging sub-signal C5 and the second color imaging sub-signal C7 can make the second color charged particles in the pixels to be displayed the second color closer to one side of the display surface, thereby achieving a better display effect.

[0188] In some embodiments, the second color driving signal C also includes sub-signals corresponding to the eighth driving stage Stage8 to the tenth driving stage Stage10, and the multiple sub-signals are respectively the electric field cancellation sub-signal C8, the electric field cancellation sub-signal C9 and the electric field cancellation sub-signal C10, that is, in the eighth driving stage Stage8 to the tenth driving stage Stage10, the second color driving signal C no longer drives the second color charged particles. The electronic ink screen 1 has a bistable characteristic. Even if the electric field in the electronic ink screen is canceled, the electronic ink screen 1 can stay on the last refreshed screen. Therefore, the color particles in the pixels to be displayed in color are still in the state of the seventh driving stage Stage7 in the eighth driving stage Stage8 to the tenth driving stage Stage10, so that the pixels to be displayed in color can continue to display color.

[0189] As an example, compare Figure 10C, the second color driving signal C can be expressed as:

[0190] {CM,CM,HI,CM}, / / corresponds to the sub-signal of the first driving stage Stage1

[0191] {LO,LO,LO,LO}, / / corresponds to the sub-signal of the second driving stage Stage2

[0192] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the third driving stage Stage3

[0193] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the fourth driving stage Stage4

[0194] {LO,RV,LO,RV}, / / corresponds to the sub-signal of the fifth driving stage Stage5

[0195] {CM,CM,RV,CM}, / / corresponds to the sub-signal of the sixth driving stage Stage6

[0196] {LO,RV,LO,RV}, / / corresponds to the sub-signal of the seventh driving stage Stage7

[0197] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the eighth driving stage Stage8

[0198] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the ninth driving stage Stage9

[0199] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the tenth driving stage Stage 10

[0200] Each row represents a cycle unit in a sub-signal of a stage, that is, a cycle unit includes the above four parts. From the above data, we can see the voltage value of each of the four parts included in each cycle unit.

[0201] The duration of the four parts included in a cyclic unit in the sub-signal corresponding to each driving stage in the second color driving signal C, and the number of repetitions of the cyclic unit can refer to the previous data on the duration of the four parts included in a cyclic unit in the sub-signal corresponding to each driving stage in the first color driving signal B, and the number of repetitions of the cyclic unit.

[0202] Taking the sub-signal corresponding to the fourth driving stage Stage 4 of the second color drive signal C (second color first dithering signal C4) as an example, the four parts of a cyclic unit include: a high level with a duration of 0x03 and a voltage value of HI, a low level with a duration of 0x04 and a voltage value of LO, a high level with a duration of 0x03 and a voltage value of HI, and a low level with a duration of 0x04 and a voltage value of LO. This cyclic unit is repeated 24 times.

[0203] The third color driving signal W is introduced below.

[0204] In some embodiments, as Figures 10B to 10C As shown, the third color driving signal W (white driving signal W) includes multiple sub-signals corresponding to multiple driving stages. When the first color driving signal B includes the second particle separation sub-signal B4, the third color driving signal W includes the third color first dithering sub-signal W4. The driving stage corresponding to the third color first dithering sub-signal W4 and the driving stage corresponding to the second particle separation sub-signal B4 are the same driving stage, both of which are the fourth driving stage Stage4.

[0205] The third-color first dithering sub-signal W4 includes a seventh level and a reference level that alternate in time sequence. The duration of the seventh level is equal to the duration of the first level, and the duration of the reference level is equal to the duration of the second level. For example, the data of the sub-signals corresponding to the fourth driving stage Stage 4 are all {0x03, 0x04, 0x03, 0x04, 0x24}. The third-color first dithering sub-signal W4 includes, in sequence, the seventh level with a duration of 3 time units, the reference level with a duration of 4 time units, the seventh level with a duration of 3 time units, and the reference level with a duration of 4 time units. The seventh level is a low level with a voltage value of LO, and the reference level has a voltage value of CM.

[0206] The third-color first dither sub-signal W4 is configured to drive the third-color charged particles to oscillate. The seventh level is configured to drive the third-color charged particles toward the side of the display surface closer to the electronic ink screen. The electric field removal level is configured to remove the drive to the first-color charged particles. The electric field removal level is the same as the potential of the second electrode layer, eliminating a voltage difference between the first and second electrode layers in the pixel and allowing the third-color charged particles in the pixel to further separate due to inertia. Here, oscillation of the third-color charged particles refers to the reciprocating motion of the third-color charged particles within the pixel.

[0207] In this way, the third color charged particles are driven to move by the third color first dithering sub-signal W4, so that the afterimage phenomenon in the subsequent stage can be avoided.

[0208] In some embodiments, as Figure 10C As shown, the third color driving signal W includes sub-signals corresponding to at least seven driving stages, wherein the third color driving signal includes the sub-signals corresponding to the first driving stage Stage1 to the sub-signals corresponding to the seventh driving stage Stage7, which are: a third color balancing sub-signal W1, a third color third dithering sub-signal W2, a third color second dithering sub-signal W3, a third color first dithering sub-signal W4, an electric field cancellation sub-signal W5, a third color imaging sub-signal W6 and an electric field cancellation sub-signal W7.

[0209] The third color balance sub-signal W1 is configured to position the third color charged particles at an initial position; wherein the initial position is the position of the third color charged particles when the pixel to display the third color is not driven by the third color driving signal.

[0210] The third color third dithering sub-signal W2 is configured to drive the third color charged particles to swing; for example, the third color second dithering sub-signal W2 can drive the white charged particles WG to swing in advance.

[0211] The third color second dithering sub-signal W3 is configured to drive the third color charged particles to continue to sway; for example, the third color second dithering sub-signal W3 can drive the white charged particles WG to continue to sway.

[0212] The third color first dithering sub-signal W4 is configured to drive the third color charged particles to continue to sway; for example, the third color first dithering sub-signal W4 can drive the white charged particles WG to continue to sway.

[0213] The third color third dithering sub-signal W2, the third color second dithering sub-signal W3, and the third color first dithering sub-signal W4 can keep the white charged particles WG in motion to avoid image sticking. During the swinging of the white charged particles WG, the black charged particles BG and the color charged particles CG also swing under the influence of the above sub-signals, and in the opposite direction of the movement of the white charged particles WG.

[0214] The electric field deactivation sub-signal W5 is configured to deactivate the driving of the third color charged particles.

[0215] The third color imaging sub-signal W6 is configured to drive the third color charged particles in the pixel toward the side closer to the display surface of the electronic ink display, so that the pixel that is to display the third color displays the third color. For example, the third color imaging sub-signal W6 is configured to drive the white charged particles WG in the pixel toward the side closer to the display surface of the electronic ink display, so that the pixel that is to display white displays white.

[0216] The electric field deactivation sub-signal W7 is configured to deactivate the driving of the third color charged particles.

[0217] In some embodiments, the third color driving signal W also includes sub-signals corresponding to the eighth driving stage Stage8 to the tenth driving stage Stage10, and the multiple sub-signals are respectively the electric field cancellation sub-signal W8, the electric field cancellation sub-signal W9 and the electric field cancellation sub-signal W10, that is, in the eighth driving stage Stage8 to the tenth driving stage Stage10, the third color driving signal W no longer drives the second color charged particles. The electronic ink screen 1 has a bistable characteristic. Even if the electric field in the electronic ink screen is cancelled, the electronic ink screen 1 can stay on the last refreshed screen. Therefore, the black particles in the pixels to be displayed white are still in the state of the sixth driving stage Stage6 in the eighth driving stage Stage8 to the tenth driving stage Stage10, so that the pixels to be displayed white can continue to display white.

[0218] As an example, compare Figure 10C , the second color driving signal C can be expressed as:

[0219] {CM,CM,HI,CM}, / / corresponds to the sub-signal of the first driving stage Stage 1

[0220] {LO,LO,LO,LO}, / / corresponds to the sub-signal of the second driving stage Stage2

[0221] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the third driving stage Stage3

[0222] {HI,LO,HI,LO}, / / corresponds to the sub-signal of the fourth driving stage Stage4

[0223] {LO,RV,LO,RV}, / / corresponds to the sub-signal of the fifth driving stage Stage5

[0224] {CM,CM,RV,CM}, / / corresponds to the sub-signal of the sixth driving stage Stage6

[0225] {LO,RV,LO,RV}, / / corresponds to the sub-signal of the seventh driving stage Stage7

[0226] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the eighth driving stage Stage8

[0227] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the ninth driving stage Stage9

[0228] {CM,CM,CM,CM}, / / corresponds to the sub-signal of the tenth driving stage Stage 10

[0229] Each row represents a cycle unit in a sub-signal of a stage, that is, a cycle unit includes the above four parts. From the above data, we can see the voltage value of each of the four parts included in each cycle unit.

[0230] The duration of the four parts included in a cyclic unit in the sub-signal corresponding to each driving stage in the second color driving signal C, and the number of repetitions of the cyclic unit can refer to the previous data on the duration of the four parts included in a cyclic unit in the sub-signal corresponding to each driving stage in the first color driving signal B, and the number of repetitions of the cyclic unit.

[0231] Taking the sub-signal (third color first dithering signal W4) corresponding to the fourth driving stage Stage 4 of the second color drive signal C as an example, the four parts of a cyclic unit include: a high level with a duration of 0x03 and a voltage value of HI, a low level with a duration of 0x04 and a voltage value of LO, a high level with a duration of 0x03 and a voltage value of HI, and a low level with a duration of 0x04 and a voltage value of LO. This cyclic unit is repeated 24 times.

[0232] In some embodiments, when the colors in the image to be displayed include a first color, a second color, and a third color, outputting a first color driving signal to a pixel in the electronic ink screen to display the first color, outputting a second color driving signal to a pixel in the electronic ink screen to display the second color, and outputting a first color driving signal to a pixel in the electronic ink screen to display the third color includes:

[0233] In the I display driving phase of displaying the image to be displayed, each row of pixels of the electronic ink screen 1 is scanned in sequence; a sub-signal corresponding to the I driving phase in the first color driving signal is output to the pixels to be displayed in the first color in each scanned row of pixels, a sub-signal corresponding to the I driving phase in the second color driving signal is output to the pixels to be displayed in the second color in each scanned row of pixels, and a sub-signal corresponding to the I driving phase in the third color driving signal is output to the pixels to be displayed in the third color in each scanned row of pixels; wherein I ≥ 1, and the number of driving phases corresponding to the second color driving signal, the third color driving signal, and the first color driving signal is the same, for example, as Figures 10A to 10C As shown, the number of driving phases corresponding to the second color driving signal, the third color driving signal and the first color driving signal is ten.

[0234] In some embodiments, the display control device 2 may store a waveform file LUTWF_B of the first color driving signal B, a waveform file LUT WF_C of the second color driving signal C, and a waveform file LUTWF_W of the third color driving signal W, wherein the waveform file is used to represent Figure 10CThe program of the data driving signal (first color driving signal, second color driving signal and third color driving signal) shown.

[0235] At least one processor 21 in the display control device 2 can control the source driver 24 to output corresponding data drive signals to each pixel based on the image to be displayed and the waveform files stored in the at least one memory 22. More specifically, based on the stored first color waveform file LUT WF_B, a first color drive signal corresponding to LUT WF_B is output to pixels to display the first color; the first color waveform file contains the waveform of the first color drive signal. Based on the stored second color waveform file LUT WF_C, a second color drive signal corresponding to LUT WF_C is output to pixels corresponding to the second color pixel data in the image to be displayed; the second color waveform file contains the waveform of the second color drive signal. Based on the stored third color waveform file LUT WF_W, a third color drive signal corresponding to LUT WF_W is output to pixels to display the third color; the third color waveform file contains the waveform of the third color drive signal.

[0236] In some embodiments, after the trial production of the electronic ink display device, it is necessary to test the display effect of the trial-produced electronic ink display device to determine whether there is an imaging deviation problem, and to modify the control method of the electronic ink screen. By modifying the initial version of the program and continuously debugging until the display screen of the electronic ink display device has no imaging deviation problem, the final electronic ink display device can be obtained.

[0237] For example, the initial version of the program is first used to light up a black screen. Since electronic ink display devices usually have imaging deviation problems after half a year of use, the electronic ink display device after trial production is placed in a high temperature and high humidity environment (for example, temperature 40°C, humidity 60%) for about 240 hours to simulate the scenario where the electronic ink display device is used for a long time. The display screen is observed under a microscope to determine whether there are colored charged particles (red charged particles) in the pixels to be displayed in black. If so, it means that the display screen of the electronic ink display device after trial production has an imaging deviation problem, such as the reddish black phenomenon.

[0238] Next, debug the initial version of the program and constantly determine whether the display screen has a black-reddish phenomenon during the debugging process. Figure 10A The waveform program of the data driving signal shown in FIG10A drives the electronic ink display device. The waveform program of the data driving signal shown in FIG10A modifies the waveform framework relative to the first version program, that is, modifies the sub-signal corresponding to the fifth driving stage Stage5; the corresponding Figure 10BThe waveform of the data driving signal shown is used to drive the electronic ink display device. Figure 10B The waveform of the data driving signal shown in the program is modified compared to the first version of the program, that is, the duration of the first level and the second level in the sub-signal corresponding to the fourth driving stage Stage4 is modified; the corresponding Figure 10C The program drives the electronic ink display device using the waveform of the data drive signal shown, thereby resetting the waveform framework and waveform data of the initial version of the program. After the program is reset, it can be burned into the display control device, which controls the electronic ink screen for display and determines whether the display screen has a black-red cast. The above debugging procedure and determination process are repeated until the display screen no longer has a black-red cast, and the debugging process is completed, resulting in a final electronic ink display device that is ready for shipment. This electronic ink display device can avoid display anomalies and extend its service life.

[0239] like Figure 5 As shown, some embodiments of the present disclosure further provide a display control device 2. The functions that can be implemented by the display control device 2 can be specifically referred to the above embodiments, and will not be elaborated here.

[0240] The display control device 2 includes a source driver 24 , at least one memory 22 , and at least one processor 21 .

[0241] At least one memory 22 is configured to store a first color waveform file, wherein the first color waveform file records the waveform of the first color driving signal; at least one processor 21 is configured to control the source driver 24 to input the first color driving signal B to the pixel to be displayed in the first color on the electronic ink screen according to the first color waveform file stored in the at least one memory;

[0242] Among them, the first color driving signal B includes multiple sub-signals corresponding to multiple driving stages, and the multiple sub-signals include a first color imaging sub-signal B6 and a particle separation sub-signal, and the particle separation sub-signal is located in at least one stage before the stage where the first color imaging signal is located.

[0243] The first color imaging sub-signal B6 is configured to drive the first color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color.

[0244] The particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles in the pixel to move and separate the first color charged particles and the second color charged particles.

[0245] In some embodiments, at least one memory 22 is further configured to store a second color waveform file and a third color waveform file; wherein the second color waveform file records the waveform of the second color driving signal; and the third color waveform file records the waveform of the third color driving signal.

[0246] At least one processor 21 is also configured to control the source driver 24 to output a second color drive signal corresponding to the second color waveform file to the pixels to be displayed with the second color according to the second color waveform file stored in the at least one memory 22; and to control the source driver 24 to output a third color drive signal corresponding to the third color waveform file to the pixels to be displayed with the third color according to the third color waveform file stored in the at least one memory 22.

[0247] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a processor, the computer (e.g., an electronic ink display device) executes one or more steps in the method for controlling an electronic ink screen as described in any of the above embodiments.

[0248] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, including, and / or carrying instructions and / or data.

[0249] Some embodiments of the present disclosure further provide a computer program product, which includes computer program instructions that, when executed on a computer, cause the computer to perform one or more steps of the electronic ink screen control method described in the above embodiments.

[0250] Some embodiments of the present disclosure further provide a computer program. When the computer program is executed on a computer, the computer program causes the computer to execute one or more steps of the control method of the electronic ink screen as described in the above embodiments.

[0251] The beneficial effects of the above-mentioned computer-readable storage medium, computer program product and computer program are the same as the beneficial effects of the control method of the electronic ink screen described in some of the above-mentioned embodiments, and will not be repeated here.

[0252] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for controlling an electronic ink display, wherein the electronic ink display comprises a plurality of pixels, at least one pixel comprising charged particles of a first color and charged particles of a second color, wherein the charged particles of the first color and the charged particles of the second color have the same electrical properties, the method comprising: Inputting a first color driving signal to pixels of the electronic ink screen to display a first color; The first color driving signal includes a plurality of sub-signals corresponding to a plurality of driving phases, the plurality of sub-signals including a first color imaging sub-signal and a particle separation sub-signal, and the driving phase corresponding to the particle separation sub-signal is at least one driving phase prior to the driving phase corresponding to the first color imaging sub-signal; The first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; The particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles in the pixel to move and separate the first color charged particles from the second color charged particles; The particle separation sub-signal includes a first particle separation sub-signal and a second particle separation sub-signal, wherein a driving phase corresponding to the first particle separation sub-signal is before a driving phase corresponding to the first color imaging sub-signal, and a driving phase corresponding to the second particle separation sub-signal is before a driving phase corresponding to the first particle separation sub-signal; The first particle separation sub-signal is a first color down-fader signal, and the first color down-fader signal is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and separate the first color charged particles from the second color charged particles; The second particle separation sub-signal is a first color first dithering sub-signal, and the first color first dithering sub-signal includes a first level and a second level that appear alternately in a time sequence; The second particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles to swing, wherein the first level is configured to drive the first color charged particles and the second color charged particles to move toward a side close to the display surface of the electronic ink screen, and the second level is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen; The duration of the first level is shorter than the duration of the second level.

2. The control method according to claim 1, wherein: The multiple sub-signals included in the first color driving signal further include a first color balance sub-signal, and the driving phase corresponding to the first color balance sub-signal is the first driving phase among the multiple driving phases; The first color balance sub-signal is configured to place the first color charged particles at an initial position; wherein the initial position is the position of the first color charged particles when the pixel to display the first color is not driven by the first color driving signal.

3. The control method according to claim 2, wherein: The first color balance sub-signal includes a reference level, a third level, a fourth level and a reference level arranged in sequence; The polarity of the third level is opposite to the polarity of the first color imaging sub-signal; In a case where the particle separation sub-signal includes a first particle separation sub-signal, a level polarity of the fourth level is opposite to a level polarity of the first particle separation sub-signal; In the case where the particle separation sub-signal includes a second particle separation sub-signal, the second particle separation sub-signal includes a first level and a second level that appear alternately in time sequence, and the polarity of the fourth level is opposite to that of the second level.

4. The control method according to any one of claims 1 to 3, wherein: The first color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the sub-signals corresponding to the seventh driving stage included in the first color driving signal are sequentially: a first color balance sub-signal; the first color balance sub-signal is configured to cause the positions of the first color charged particles to be at an initial position; wherein the initial position is the position of the first color charged particles when the pixel to display the first color is not driven by the first color drive signal; a first color second dithering sub-signal; the first color second dithering sub-signal is configured to drive the first color charged particles to swing; a first color third dithering sub-signal; and a first color second dithering sub-signal configured to drive the first color charged particles to continue to oscillate; a first dithering sub-signal of a first color; and a second dithering sub-signal of the first color configured to drive the first color charged particles and the second color charged particles to swing and separate the first color charged particles and the second color charged particles; a first color fader down signal; the first color fader down signal is configured to drive the first color charged particles and the second color charged particles to move toward a side away from a display surface of the electronic ink screen, and separate the first color charged particles from the second color charged particles; a first color imaging sub-signal; the first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; The electric field cancellation sub-signal is configured to cancel the driving of the first color charged particles.

5. The control method according to claim 1, further comprising: Inputting a second color driving signal to pixels in the electronic ink screen that are to display a second color; Wherein, the second color driving signal includes a plurality of sub-signals corresponding to a plurality of driving stages; The second color driving signal includes a second color first dithering sub-signal; the driving phase corresponding to the second color first dithering sub-signal and the driving phase corresponding to the second particle separation sub-signal are the same driving phase; The second color first dithering sub-signal includes a fifth level and a sixth level that appear alternately in time sequence; The second-color first dithering sub-signal is configured to drive the first-color charged particles and the second-color charged particles to swing; wherein the fifth level is configured to drive the first-color charged particles and the second-color charged particles to move toward a side close to the display surface of the electronic ink screen, and the sixth level is configured to drive the first-color charged particles and the second-color charged particles to move toward a side away from the display surface of the electronic ink screen; The duration of the fifth level is equal to the duration of the first level, and the duration of the sixth level is equal to the duration of the second level.

6. The control method according to claim 5, wherein: The second color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the seventh driving stage included in the second color driving signal are sequentially: A second color flip sub-signal; the second color flip sub-signal is configured to drive the second color charged particles to flip; a second color balance sub-signal; the second color balance sub-signal is configured to cause the position of the second color charged particles to be at an initial position; wherein the initial position is the position of the second color charged particles when the pixel to display the second color is not driven by the second color drive signal; a second color second dithering sub-signal; the second color second dithering sub-signal is configured to drive the second color charged particles to swing; a second color first dithering sub-signal; the second color first dithering sub-signal is configured to drive the second color charged particles to continue to oscillate; a second color pre-imaging sub-signal; the second color pre-imaging sub-signal is configured to drive the second color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen; a second color up-fader signal; the second color up-fader signal is configured to drive the second color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen; The second color imaging sub-signal is configured to drive the second color charged particles in the pixel to move toward the side close to the display surface of the electronic ink screen, so that the pixel to display the second color displays the second color.

7. The control method according to claim 1, wherein: The at least one pixel further includes third color charged particles, the charge property of the third color charged particles being opposite to the charge property of the first color charged particles; The control method further includes: inputting a third color driving signal to pixels in the electronic ink screen that are to display a third color; The third color driving signal includes a third color first dithering sub-signal; the driving phase corresponding to the third color first dithering sub-signal and the driving phase corresponding to the second particle separation sub-signal are the same driving phase; The third color first dithering sub-signal includes a seventh level and a reference level that appear alternately in time sequence; The third-color first dithering sub-signal is configured to drive the third-color charged particles to oscillate; wherein the seventh level is configured to drive the third-color charged particles to move toward a side close to the display surface of the electronic ink screen, and the reference level is configured to cancel the drive on the first-color charged particles; The duration of the seventh level is equal to the duration of the first level, and the duration of the reference level is equal to the duration of the second level.

8. The control method according to claim 7, wherein: The third color driving signal includes sub-signals corresponding to at least seven driving stages, wherein the sub-signals corresponding to the first driving stage to the seventh driving stage included in the third color driving signal are sequentially: a third color balance sub-signal; the third color balance sub-signal being configured to cause the position of the third color charged particles to be at an initial position; wherein the initial position is the position of the third color charged particles when the pixel to display the third color is not driven by the third color driving signal; a third color third dithering sub-signal; the third color third dithering sub-signal is configured to drive the third color charged particles to swing; a third color second dithering sub-signal; the third color second dithering sub-signal is configured to drive the third color charged particles to continue to oscillate; a third color first dithering sub-signal; the third color first dithering sub-signal is configured to drive the third color charged particles to continue to oscillate; an electric field cancellation sub-signal; the electric field cancellation sub-signal is configured to cancel the driving of the third color charged particles; a third color imaging sub-signal; the third color imaging sub-signal being configured to drive the third color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the third color displays the third color; The electric field cancellation sub-signal is configured to cancel the driving of the third color charged particles.

9. The control method according to claim 1, wherein: The at least one pixel further includes charged particles of a third color, the charge property of the charged particles of the third color being opposite to the charge property of the charged particles of the first color, the colors in the image to be displayed include the first color, the second color, and the third color, the control method further including outputting a second color driving signal to the pixel in the electronic ink screen to display the second color, and outputting a third color driving signal to the pixel in the electronic ink screen to display the third color; The method of outputting a first color driving signal to pixels in the electronic ink screen that are to display a first color, outputting a second color driving signal to pixels in the electronic ink screen that are to display a second color, and outputting a third color driving signal to pixels in the electronic ink screen that are to display a third color comprises: In the I display drive phase of displaying the image to be displayed, each row of pixels of the electronic ink screen is scanned in sequence; the sub-signal of the first color drive signal corresponding to the I drive phase is output to the pixels to be displayed in each scanned row of pixels of the first color, the sub-signal of the second color drive signal corresponding to the I drive phase is output to the pixels to be displayed in each scanned row of pixels of the second color, and the sub-signal of the third color drive signal corresponding to the I drive phase is output to the pixels to be displayed in each scanned row of pixels of the third color; wherein I ≥ 1, and the number of drive phases corresponding to the first color drive signal, the second color drive signal, and the third color drive signal are the same.

10. A display control device, comprising: Source driver; at least one memory; The at least one memory is configured to store a first color waveform file, wherein the first color waveform file records a waveform of a first color driving signal; at least one processor; The at least one processor is configured to control the source driver to input a first color driving signal to pixels to be displayed in the electronic ink screen according to the first color waveform file stored in the at least one memory; The first color driving signal includes a plurality of sub-signals corresponding to a plurality of driving stages, the plurality of sub-signals including a first color imaging sub-signal and a particle separation sub-signal, the particle separation sub-signal being located at least one stage before the stage of the first color imaging signal; The first color imaging sub-signal is configured to drive the first color charged particles in the pixel to move toward a side close to the display surface of the electronic ink screen, so that the pixel to display the first color displays the first color; The particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles in the pixel to move, and to separate the first color charged particles and the second color charged particles; The particle separation sub-signal includes a first particle separation sub-signal and a second particle separation sub-signal, wherein a driving phase corresponding to the first particle separation sub-signal is before a driving phase corresponding to the first color imaging sub-signal, and a driving phase corresponding to the second particle separation sub-signal is before a driving phase corresponding to the first particle separation sub-signal; The first particle separation sub-signal is a first color down-fader signal, and the first color down-fader signal is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen, and separate the first color charged particles from the second color charged particles; The second particle separation sub-signal is a first color first dithering sub-signal, and the first color first dithering sub-signal includes a first level and a second level that appear alternately in a time sequence; The second particle separation sub-signal is configured to drive the first color charged particles and the second color charged particles to swing, wherein the first level is configured to drive the first color charged particles and the second color charged particles to move toward a side close to the display surface of the electronic ink screen, and the second level is configured to drive the first color charged particles and the second color charged particles to move toward a side away from the display surface of the electronic ink screen; The duration of the first level is shorter than the duration of the second level. The display control device according to claim 10 , wherein: The at least one memory is further configured to store a second color waveform file and a third color waveform file; wherein the second color waveform file records the waveform of the second color driving signal; and the third color waveform file records the waveform of the third color driving signal; The at least one processor is also configured to control the source driver to output a second color drive signal corresponding to the second color waveform file to the pixels to display the second color based on the second color waveform file stored in the at least one memory; and to control the source driver to output a third color drive signal corresponding to the third color waveform file to the pixels to display the third color based on the third color waveform file stored in the at least one memory.

12. An electronic ink display device, comprising: An electronic ink screen, the electronic ink screen comprising a plurality of pixels, at least one pixel comprising charged particles of a first color and charged particles of a second color, the electrical properties of the charged particles of the first color being the same as the electrical properties of the charged particles of the second color; and A display control device coupled to the electronic ink screen, wherein the display control device is the display control device according to claim 10 or 11.

13. The electronic ink display device according to claim 12, wherein: The charge amount of the first color charged particles is greater than the charge amount of the second color charged particles.

14. A computer-readable storage medium storing computer program instructions, wherein when the computer program instructions are executed on an electronic ink display device, the electronic ink display device executes the method for controlling the electronic ink screen according to any one of claims 1 to 9.

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