Driving method, device and readable medium of electronic paper display device

Abstract

The present disclosure provides a driving method of an electronic paper display device, belonging to the technical field of display, which can solve the problem of residual image of the existing electronic paper display device. The first driving stage of the electronic paper display device is a first uniformization stage including a first sub-uniformization stage, and a balance stage is before a display stage; the driving method of the electronic paper display device of the present disclosure comprises: according to the image to be displayed, applying a first driving signal to the first electrode in the microstructure needing to display black, applying a second driving signal to the first electrode in the microstructure needing to display white, and applying a third driving signal to the first electrode in the microstructure needing to display red; a voltage signal is applied to the second electrode in the microstructure, the voltage signal comprises an alternating current second pulse signal of positive voltage, zero voltage and negative voltage in the first sub-uniformization stage in turn, and the absolute values of the effective voltages of the first pulse signal and the second pulse signal of the first electrode are equal, and the voltage polarities are opposite.

Description

Technical Field

[0001] This disclosure belongs to the field of display technology, and specifically relates to a driving method, apparatus and readable medium for an electronic paper display device. Background Technology

[0002] Electronic paper (E-paper, also known as electronic ink) display devices have received widespread attention due to their eye-friendly and energy-saving features.

[0003] The electronic paper display device comprises multiple microstructures and a first electrode and a second electrode disposed on opposite sides of each microstructure. Each microstructure encapsulates electrophoretic particles, including positively charged black and red particles and negatively charged white particles. Electrophoresis is the phenomenon in which charged solutes or particles move towards an electrode with the opposite charge in an electric field.

[0004] Electronic paper display devices control the movement of electrophoretic particles by controlling the electric fields generated by the first and second electrodes. When the electric fields drive black particles to the top of a microstructure, the microstructure displays black; when they drive white particles, it displays white; and when they drive red particles, it displays red. Based on this, by controlling the waveform to change the electric fields formed by the first and second electrodes, the electrophoretic particles in the semi-fluid inside the microstructure move up and down, thus controlling multiple microstructures to display different colors, thereby achieving image display. Summary of the Invention

[0005] This disclosure aims to at least solve one of the technical problems existing in the prior art, and to provide a driving method, apparatus and readable medium for an electronic paper display device.

[0006] In a first aspect, embodiments of this disclosure provide a driving method for an electronic paper display device. The electronic paper display device includes a plurality of microstructures and a first electrode and a second electrode disposed on opposite sides of each microstructure. The microstructures include black particles, white particles, and red particles, wherein the black particles and white particles carry opposite charges, and the black particles and red particles carry the same charges. The charge-to-mass ratio of the black particles is greater than that of the red particles. The first driving stage of the electronic paper display device is a first homogenization stage, which includes a first sub-homogenization stage. The driving stage of the electronic paper display device further includes a balancing stage and a display stage, wherein the balancing stage precedes the display stage. The driving method for the electronic paper display device includes:

[0007] According to the image to be displayed, a first driving signal is applied to the first electrode in the microstructure that needs to be displayed in black, a second driving signal is applied to the first electrode in the microstructure that needs to be displayed in white, and a third driving signal is applied to the first electrode in the microstructure that needs to be displayed in red; wherein, the first driving signal includes a first sub-driving signal in the first sub-homogenization stage, the second driving signal includes a second sub-driving signal in the first sub-homogenization stage, and the third driving signal includes a third sub-driving signal in the first sub-homogenization stage; the first sub-driving signal, the second sub-driving signal, and the third sub-driving signal include a first pulse signal in the first sub-homogenization stage in which negative voltage, zero voltage, and positive voltage alternate sequentially;

[0008] A voltage signal is applied to the second electrode in the microstructure. The voltage signal includes an alternating AC second pulse signal consisting of a positive voltage, a zero voltage, and a negative voltage during the first sub-homogenization stage. The absolute values ​​of the effective voltages of the first pulse signal of the first electrode and the second pulse signal of the second electrode opposite to the first electrode are equal, but their voltage polarities are opposite.

[0009] In some embodiments, the first homogenization stage further includes a second sub-homogenization stage, which is prior to the balancing stage and after the first sub-homogenization stage.

[0010] The first driving signal further includes a plurality of repeated fourth sub-driving signal units in the second sub-homogenization stage, and the second driving signal further includes a plurality of repeated fifth sub-driving signal units in the second sub-homogenization stage. The third driving signal further includes a plurality of repeated sixth sub-driving signal units in the second sub-homogenization stage.

[0011] Each of the fourth sub-driving signal units, each of the fifth sub-driving signal units, and each of the sixth sub-driving signal units includes a pulse signal with alternating positive and negative voltages and a zero voltage following the pulse signal.

[0012] In some embodiments, the first duration for applying the first driving signal, the second driving signal, and the third driving signal during the first sub-homogenization phase is less than the second duration for applying the first driving signal, the second driving signal, and the third driving signal during the second sub-homogenization phase.

[0013] In some embodiments, the display stage includes a first sub-display stage, and the first driving signal further includes a seventh sub-driving signal in the first sub-display stage. The seventh sub-driving signal is used to drive the red particles in the red display microstructure to move closer to the display side of the electronic paper display device relative to the white particles and the black particles. The seventh sub-driving signal includes at least two first pulse repetition units, and the first pulse repetition unit includes a zero voltage and a first voltage applied sequentially to the first electrode.

[0014] The second driving signal also includes an eighth sub-driving signal in the first sub-display stage. The eighth sub-driving signal includes pulse signals with alternating negative and positive voltages. The positive voltage pulse signal of the eighth sub-driving signal is synchronized with a first pulse repetition unit in the seventh sub-driving signal.

[0015] The third driving signal also includes a ninth sub-driving signal in the first sub-display stage. The ninth sub-driving signal includes pulse signals with alternating negative and positive voltages. The positive voltage pulse signal of the ninth sub-driving signal is synchronized with another first pulse repetition unit in the seventh sub-driving signal.

[0016] In some embodiments, the display stage further includes a second sub-display stage and a third sub-display stage, and the first driving signal further includes a tenth sub-driving signal in the second sub-display stage and an eleventh sub-driving signal in the third sub-display stage. The tenth sub-driving signal and the eleventh sub-driving signal include a second voltage, a zero voltage, and a third voltage applied sequentially to the first electrode. The second voltage is used to drive the black particles in the red display microstructure away from the display side of the electronic paper display device relative to the red particles and the white particles, and the third voltage is used to drive the red particles in the red display microstructure closer to the display side of the electronic paper display device relative to the black particles and the white particles. The absolute value of the effective voltage of the second voltage is equal to the absolute value of the first voltage and greater than the absolute value of the third voltage, and the voltage polarity of the second voltage is opposite to the voltage polarity of the first voltage and the third voltage.

[0017] In some embodiments, the third driving signal further includes a twelfth sub-driving signal during the second sub-display phase, the twelfth sub-driving signal being applied synchronously with the second voltage of the tenth sub-driving signal to drive the white particles toward the display side of the electronic paper display device relative to the black particles and the red particles, and to drive the black particles away from the display side of the electronic paper display device relative to the red particles.

[0018] In some embodiments, the duration of the negative voltage in the ninth sub-driving signal is longer than the duration of the positive voltage.

[0019] In some embodiments, the voltage of the second electrode further includes an AC third pulse signal in the third sub-display stage, the third pulse signal having the same absolute value and opposite polarity as the effective voltage of the second voltage of the eleventh sub-drive signal, for driving the white particles in the red display microstructure to approach the display side of the electronic paper display device relative to the red particles and the black particles.

[0020] The second driving signal also includes a thirteenth sub-driving signal in the third sub-display stage, and the third driving signal also includes a fourteenth sub-driving signal in the third sub-display stage. The thirteenth and fourteenth sub-driving signals are applied synchronously with the third pulse signal and have the same absolute value and voltage polarity as the effective voltage of the third pulse signal.

[0021] In some embodiments, the display stage further includes a fourth sub-display stage, and the first driving signal further includes a fifteenth sub-driving signal in the fourth sub-display stage, the fifteenth sub-driving signal including at least two second pulse repetition units, the second pulse repetition unit including a third voltage and a zero voltage applied sequentially to the first electrode;

[0022] The second driving signal also includes a sixteenth sub-driving signal in the fourth sub-display stage, the sixteenth sub-driving signal including at least two third pulse repetition units, the third pulse repetition unit including a first voltage and a zero voltage applied sequentially to the first electrode.

[0023] In some embodiments, the display stage further includes a fifth sub-display stage and a sixth sub-display stage, and the first driving signal further includes a seventeenth sub-driving signal in the fifth sub-display stage and an eighteenth sub-driving signal in the sixth sub-display stage. The seventeenth sub-driving signal and the eighteenth sub-driving signal are used to drive the red particles in the red microstructure in the fifth sub-display stage and the sixth sub-display stage to approach the display side of the electronic paper display device relative to the white particles and the black particles.

[0024] The seventeenth sub-driving signal includes a fourth pulse signal and a fifth pulse signal applied sequentially to the first electrode, wherein the absolute value and polarity of the fourth pulse signal and the fifth pulse signal are the same as the effective voltage of the third voltage;

[0025] The eighteenth driving signal includes a sixth pulse signal, and the effective voltage value of the sixth pulse signal is the same as that of the fourth pulse signal and the fifth pulse signal.

[0026] In some embodiments, the third driving signal further includes a nineteenth sub-driving signal in the fifth sub-display stage, the nineteenth sub-driving signal being used to drive the white particles in the white microstructure in the fifth sub-display stage to move closer to the display side of the electronic paper display device relative to the red particles and the black particles, the nineteenth driving signal being between the fourth pulse signal and the fifth pulse signal.

[0027] In some embodiments, the second driving signal further includes a twentieth sub-driving signal in the sixth sub-display stage, the twentieth sub-driving signal being used to drive the black particles in the black display microstructure to approach the display side of the electronic paper display device relative to the red particles and the white particles, and the absolute value of the effective voltage of the twentieth sub-driving signal is greater than the absolute value of the effective voltage of the eighteenth sub-driving signal; the start time of the effective voltage of the twentieth sub-driving signal is earlier than the start time of the effective voltage of the eighteenth sub-driving signal.

[0028] In some embodiments, the driving phase of the electronic paper display device further includes a second homogenization phase, which is after the balancing phase and before the display phase;

[0029] The first driving signal, the second driving signal, and the third driving signal respectively include the twenty-first sub-driving signal, the twenty-second sub-driving signal, and the twenty-third sub-driving signal in the second homogenization stage; wherein the twenty-first sub-driving signal, the twenty-second sub-driving signal, and the twenty-third sub-driving signal each include pulse signals with alternating positive and negative voltages.

[0030] In some embodiments, the first drive signal further includes a twenty-fourth sub-drive signal in the balancing phase, the second drive signal further includes a twenty-fifth sub-drive signal in the balancing phase, and the third drive signal further includes a twenty-sixth sub-drive signal in the balancing phase.

[0031] The 24th, 25th, and 26th sub-driving signals are used to make the total charge of the black particles, white particles, and red particles in the microstructure equal to zero.

[0032] Secondly, embodiments of this disclosure also provide an electronic paper display device, including a plurality of microstructures and a first electrode and a second electrode disposed on opposite sides of each microstructure; the microstructures include black particles, white particles and red particles, wherein the black particles and the white particles carry opposite charges, and the black particles and the red particles carry the same charges; the charge-to-mass ratio of the black particles is greater than the charge-to-mass ratio of the red particles;

[0033] The first driving stage of the electronic paper display device is a first homogenization stage, which includes a first sub-homogenization stage. The driving stage of the electronic paper display device also includes a balancing stage and a display stage, with the balancing stage preceding the display stage.

[0034] The electronic paper display device further includes a processor configured to, based on an image to be displayed, apply a first driving signal to the first electrode in a microstructure where black is to be displayed, apply a second driving signal to the first electrode in a microstructure where white is to be displayed, and apply a third driving signal to the first electrode in a microstructure where red is to be displayed; wherein the first driving signal includes a first sub-driving signal in a first sub-homogenization stage, the second driving signal includes a second sub-driving signal in the first sub-homogenization stage, and the third driving signal includes a third sub-driving signal in the first sub-homogenization stage; the first sub-driving signal, the second sub-driving signal, and the third sub-driving signal include a first pulse signal in the first sub-homogenization stage in which negative voltage, zero voltage, and positive voltage alternate sequentially; and apply a voltage signal to the second electrode in the microstructure, the voltage signal including a second AC pulse signal in the first sub-homogenization stage in which positive voltage, zero voltage, and negative voltage alternate sequentially, wherein the absolute values ​​of the effective voltages of the first pulse signal of the first electrode and the second pulse signal of the second electrode opposite to the first electrode are equal, but their voltage polarities are opposite.

[0035] Thirdly, embodiments of this disclosure also provide a non-transient computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements the method described above. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the microstructure of an embodiment of the present disclosure;

[0037] Figure 2 This is a schematic flowchart of the driving method for an electronic paper display device according to an embodiment of the present disclosure;

[0038] Figure 3 This is a timing diagram of the first sub-homogenization stage of the driving method for the electronic paper display device according to an embodiment of the present disclosure;

[0039] Figure 4 This is a timing diagram of the second sub-homogenization stage of the driving method for the electronic paper display device according to an embodiment of the present disclosure;

[0040] Figure 5 This is a timing diagram of the first sub-display stage of the driving method for an electronic paper display device according to an embodiment of the present disclosure;

[0041] Figure 6 This is a timing diagram of the second and third sub-display stages of the driving method for the electronic paper display device according to an embodiment of the present disclosure.

[0042] Figure 7 This is a timing diagram of the fourth sub-display stage of the driving method for the electronic paper display device according to an embodiment of the present disclosure;

[0043] Figure 8 This is a timing diagram of the fifth and sixth sub-display stages of the driving method for the electronic paper display device according to an embodiment of the present disclosure.

[0044] Figure 9 This is a timing diagram of the second homogenization stage of the driving method for the electronic paper display device according to an embodiment of the present disclosure;

[0045] Figure 10 A timing diagram of the balancing phase of the driving method for the electronic paper display device according to an embodiment of the present disclosure;

[0046] Figure 11 This is a schematic diagram of the structure of an electronic paper display device according to an embodiment of the present disclosure. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solution of this disclosure / utility model, the following detailed description of this disclosure / utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0049] like Figure 1 As shown, an exemplary electronic paper display device includes a plurality of microstructures 10, and a first electrode 11 and a second electrode 12 disposed on opposite sides of each microstructure 10; each of the plurality of microstructures 10 includes charged particles of three colors; the three colored charged particles are white particles 102, black particles 101, and colored particles. The colored particles include, but are not limited to, red particles 103. In this embodiment, red particles 103 are used as an example for illustration. The black particles 101 have opposite charges to the white particles 102 and the same charges as the red particles 103, and the charge-to-mass ratio of the black particles 101 is greater than that of the red particles 103.

[0050] Those skilled in the art should understand that, since the black particles 101 and the red particles 103 have the same electrical charge, and the charge-to-mass ratio of the black particles 101 is greater than that of the red particles 103, when a voltage is applied to the first electrode 11 and the second electrode 12 to generate an electric field, the moving speed of the black particles 101 is greater than that of the red particles 103.

[0051] It should be noted that the positions of the first electrode 11 and the second electrode 12 on opposite sides of the microstructure 10 are not limited; the first electrode 11 may be closer to the display side of the electronic paper display device than the second electrode 12, that is, the side where the first substrate is located is the display side of the electronic paper display device; alternatively, the second electrode 12 may be closer to the display side of the electronic paper display device than the first electrode 11, that is, the side where the second substrate is located is the display side of the electronic paper display device. In this embodiment, using... Figure 1The second electrode 12 shown is closer to the display side of the electronic paper display device than the first electrode 11, as an example for illustration.

[0052] Furthermore, the second electrodes 12 corresponding to each microstructure 10 can be electrically connected together. In this case, the voltage signal applied to each second electrode 12 is the same, and the second electrode 12 can be called the common electrode (or Vcom electrode). Of course, the second electrodes 12 corresponding to each microstructure 10 can also be not electrically connected together. In this case, the voltage signals applied to each second electrode 12 can be the same or different. In some embodiments, the second electrode 12 can be grounded (i.e., 0V voltage).

[0053] The electrical properties of the black particles 101, white particles 102, and red particles 103 are not limited. The black particles 101 and red particles 103 can be positively charged and the white particles 102 can be negatively charged, or the black particles 101 and red particles 103 can be negatively charged and the white particles 102 can be positively charged. In this embodiment, the example of black particles 101 and red particles 103 being positively charged and white particles 102 being negatively charged is used for illustration.

[0054] In the existing technology, the driving stages of an electronic paper display device include, in sequence, a balancing stage, a homogenization (shaking) stage, a balancing stage, a homogenization stage, and a display stage. If the charged particles in the previous image are not sufficiently homogenized before entering the balancing stage, the probability of ghosting in the current image is relatively high.

[0055] To address the aforementioned issues, the following technical solutions are provided in the embodiments of this disclosure.

[0056] Firstly, regarding Figure 1 The electronic paper display device shown has a first driving stage called a first homogenization stage T1. The driving stage of the electronic paper display device also includes a balancing stage T2 and a display stage T4, with the balancing stage T2 preceding the display stage T4.

[0057] like Figure 2 and 3 As shown, this disclosure provides a driving method for an electronic paper display device, the method comprising:

[0058] S100, according to the image to be displayed, a first driving signal 01 is applied to the first electrode 11 in the microstructure 10 that needs to display black, a second driving signal 02 is applied to the first electrode 11 in the microstructure 10 that needs to display white, and a third driving signal 03 is applied to the first electrode 11 in the microstructure 10 that needs to display red. The first driving signal 01 includes a first sub-driving signal 011 in the first sub-homogenization stage T11, the second driving signal 02 includes a second sub-driving signal 021 in the first sub-homogenization stage T11, and the third driving signal 03 includes a third sub-driving signal 031 in the first sub-homogenization stage T11; the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031 include a first pulse signal in the first sub-homogenization stage T11 that alternates between negative voltage, zero voltage, and positive voltage.

[0059] The first driving signal 01 is used to bring the red particles 103 closer to the display side of the electronic paper display device relative to the white particles 102 and the black particles 101 during the display phase T4. That is, the first driving signal 01 is applied to the first electrode 11 of the microstructure 10 that needs to display red. The first electrode 11 and the second electrode 12 generate an electric field. During the display phase T4, the electric field drives the red particles 103 to move towards the second electrode 12, so that the microstructure 10 is close to the display side of the electronic paper display device to display red, thereby realizing the display of the red portion of the image to be displayed. It should be understood that since the red particles 103 are positively charged, the first driving signal 01 applied to the first electrode 11 should be a positive voltage signal, and the voltage value of this positive voltage signal should be sufficient to move the red particles 103.

[0060] The second driving signal is used in the display phase T4 to bring the black particles 101 closer to the display side of the electronic paper display device relative to the white particles 102 and the red particles 103. That is, the second driving signal 02 is applied to the first electrode 11 of the microstructure 10 that needs to display black. The first electrode 11 and the second electrode 12 generate an electric field. In the display phase T4, the electric field drives the black particles 101 to move towards the second electrode 12, so that the microstructure 10 is close to the display side of the electronic paper display device to display black, thereby realizing the display of the black portion of the image to be displayed. It should be understood that since the black particles 101 are positively charged, the first driving signal 01 applied to the first electrode 11 should be a positive voltage signal, and the voltage value of this positive voltage signal should be sufficient to drive the black particles 101 to move.

[0061] The third driving signal is used in the display phase T4 to bring the white particles 103 closer to the display side of the electronic paper display device relative to the black particles 101 and the red particles 103. That is, the third driving signal 03 is applied to the first electrode 11 of the microstructure 10 that needs to display white. The first electrode 11 and the second electrode 12 generate an electric field. In the display phase T4, the electric field drives the white particles 101 to move towards the second electrode 12, so that the microstructure 10 is close to the display side of the electronic paper display device to display white, thereby realizing the display of the white portion of the image to be displayed. It should be understood that since the white particles 101 are negatively charged, the first driving signal 01 applied to the first electrode 11 should be a negative voltage signal, and the voltage value of this negative voltage signal should be sufficient to move the white particles 101.

[0062] In this embodiment, the first sub-homogenization stage T11 precedes the equilibrium stage T2, and the first driving signal 01, the second driving signal 02, and the third driving signal 03 are respectively included in the first sub-homogenization stage T11 as the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031. The first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031 all include a first pulse signal with alternating negative voltage, zero voltage, and positive voltage. Therefore, the black particles 101, white particles 102, and red particles 103 in each microstructure 10 can be fully separated and mixed evenly in the first sub-homogenization stage T11, thereby reducing the probability of afterimages.

[0063] In this embodiment, the number of first pulse signals of the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031 is not limited and can be specifically set as needed. (Appendix) Figure 3 The illustration only uses an example containing a first pulse signal.

[0064] S200, a voltage signal is applied to the second electrode 12 in the microstructure 10. The voltage signal includes an alternating AC second pulse signal 100 of positive voltage, zero voltage and negative voltage in the first sub-homogenization stage T11. The absolute values ​​of the effective voltages of the first pulse signal of the first electrode 11 and the second pulse signal 100 of the second electrode 12 opposite to the first electrode 11 are equal and the voltage polarities are opposite.

[0065] In the prior art, the second electrode 12 is usually grounded (i.e., 0V voltage). However, in the embodiments of this disclosure, an AC voltage is applied to the second electrode 12. This AC voltage is equal in magnitude but opposite in polarity to the voltage applied to the first electrode 11. In this way, compared with the scheme where the second electrode 12 is grounded, the absolute value of the potential difference between the electric field formed by the second electrode 12 and the first electrode 11 is doubled, and the potential difference is significantly increased, which increases the effect of driving the movement of charged particles.

[0066] It should be noted that since the driving signal applied to the first electrode 11 and the voltage signal applied to the second electrode 12 form an electric field, those skilled in the art will know that steps S100 and S200 can be executed synchronously.

[0067] In some embodiments, the first homogenization stage T1 further includes a second sub-homogenization stage T12, which is prior to the equilibrium stage T2 and after the first sub-homogenization stage T11.

[0068] like Figure 4 As shown, the first driving signal 01 further includes multiple repeating fourth sub-driving signal units 012 in the second sub-homogenization stage T12; the second driving signal 02 further includes multiple repeating fifth sub-driving signal units 022 in the second sub-homogenization stage T12; and the third driving signal 03 further includes multiple repeating sixth sub-driving signal units 032 in the second sub-homogenization stage T12. Each fourth sub-driving signal unit 012, each fifth sub-driving signal unit 022, and each sixth sub-driving signal unit 032 includes a pulse signal with alternating positive and negative voltages and a zero voltage following the pulse signal.

[0069] By setting a second sub-homogenization stage T12, in the second sub-homogenization stage T12, the black particles 101, white particles 102, and red particles 103 are first moved rapidly and violently by alternating positive and negative voltage pulse signals, so as to further separate and mix them evenly. Then, zero voltage is applied to make the above charged particles slowly stop moving, thereby improving the homogenization effect of charged particles.

[0070] In some embodiments, the first duration of applying the first driving signal 01, the second driving signal 02, and the third driving signal 03 in the first sub-uniformation stage T11 is less than the second duration of applying the first driving signal 01, the second driving signal 02, and the third driving signal 03 in the second sub-uniformation stage T12. That is, the duration of applying the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031 to the first electrode 11 in the first sub-uniformation stage T11 (i.e., the first duration) is shorter than the duration of applying the fourth sub-driving signal 012, the fifth sub-driving signal 022, and the sixth sub-driving signal 032 to the first electrode 11 in the second sub-uniformation stage T12 (i.e., the second duration). This is to allow for a short period of high-intensity adjustment of the distance between various charged particles in the first sub-uniformation stage T11, and a long period of low-intensity adjustment of the distance between various charged particles in the second sub-uniformation stage T12. This achieves sufficient uniformity of various charged particles after the previous image is displayed, further reducing the probability of ghosting in the current image.

[0071] It should be noted that, Figure 4 Only one fourth sub-driving signal unit 012, one fifth sub-driving signal unit 022, and one sixth sub-driving signal unit 032 are shown in the second sub-homogenization stage T12. In practical applications, the fourth sub-driving signal unit 012, the fifth sub-driving signal unit 022, and the sixth sub-driving signal unit 032 are repeated multiple times. The second duration of applying the first driving signal 01, the second driving signal 02, and the third driving signal 03 mentioned in the embodiments of this disclosure refers to the cumulative duration of the repeated fourth sub-driving signal unit 012, the fifth sub-driving signal unit 022, and the sixth driving signal unit 032.

[0072] The following combination Figure 5-8 The present invention will provide a detailed description of the driving signal applied to the first electrode 11 and the voltage signal applied to the second electrode 12 in the display stage T4 of the present invention.

[0073] In some embodiments, such as Figure 5 As shown, the display stage T4 includes a first sub-display stage T41. The first driving signal 01 also includes a seventh sub-driving signal 013 in the first sub-display stage T41. The seventh sub-driving signal 013 is used to drive the red particles in the red display microstructure 10 to move closer to the display side of the electronic paper display device relative to the white and black particles. The seventh sub-driving signal 013 includes at least two first pulse repetition units. The first pulse repetition unit includes a zero voltage and a first voltage V1 applied sequentially to the first electrode. In some embodiments, the first voltage V1 is 11 to 15V.

[0074] The second driving signal 02 also includes an eighth sub-driving signal 023 in the first sub-display stage T41. The eighth sub-driving signal 023 includes pulse signals with alternating negative and positive voltages. The positive voltage pulse signal of the eighth sub-driving signal 023 is synchronized with a first pulse repetition unit in the seventh sub-driving signal 013. In the embodiments of this disclosure, as... Figure 5 As shown, the positive voltage pulse signal of the eighth sub-drive signal 023 is synchronized with the first pulse repetition unit in the seventh sub-drive signal 013.

[0075] In the first sub-display stage T41, the black particles 101 are individually homogenized using the eighth sub-drive signal 023, and the positive voltage pulse signal of the eighth sub-drive signal 023 is synchronized with a first pulse repetition unit in the seventh sub-drive signal 013. This can improve the black optical display effect and further eliminate afterimages while achieving red imaging.

[0076] The third driving signal 03 also includes a ninth sub-driving signal 033 in the first sub-display stage T41. The ninth sub-driving signal 033 includes pulse signals with alternating negative and positive voltages. The positive voltage pulse signal of the ninth sub-driving signal 033 is synchronized with another first pulse repetition unit in the seventh sub-driving signal 013. In this embodiment of the disclosure, as... Figure 5 As shown, the positive voltage pulse signal of the ninth sub-drive signal 033 is synchronized with the second first pulse repetition unit in the seventh sub-drive signal 013.

[0077] In the first sub-display stage T41, the white particles 102 are individually homogenized using the ninth sub-drive signal 033, and the positive voltage pulse signal of the ninth sub-drive signal 033 is synchronized with another first pulse repetition unit in the seventh sub-drive signal 013. This can improve the white optical display effect (both L value and A value can be improved) while achieving red imaging and further eliminate afterimages.

[0078] In some embodiments, such as Figure 6 As shown, the display stage T4 also includes a second sub-display stage T42 and a third sub-display stage T43. The first driving signal 01 also includes a tenth sub-driving signal 014 in the second sub-display stage T42 and an eleventh sub-driving signal 015 in the third sub-display stage T43. The tenth sub-driving signal 014 and the eleventh sub-driving signal 015 include a second voltage V2, a zero voltage, and a third voltage V3 applied sequentially to the first electrode 11. The second voltage V2 is used to drive the black particles 101 in the red display microstructure 10 away from the display side of the electronic paper display device relative to the red particles 103 and the white particles 102. The third voltage V3 is used to drive the red particles 103 in the red display microstructure 10 closer to the display side of the electronic paper display device relative to the black particles 101 and the white particles 102. The absolute value of the effective voltage of the second voltage V2 is equal to the absolute value of the first voltage V1 and greater than the absolute value of the third voltage V3. The voltage polarity of the second voltage V2 is opposite to the voltage polarity of the first voltage V1 and the third voltage V3. In some embodiments, the second voltage V2 is -11 to -15V, and the first voltage V3 is 4 to 7V.

[0079] In this embodiment, during the second sub-display stage T42, a large negative second voltage V2 is applied to the red particles 103, giving the red particles 103 and black particles 101 in the red-displaying microstructure 10 opposite forces to drive them to move away from the display side of the electronic paper display device. It should be noted that since the black particles 101 and red particles 103 have the same electrical charge, and the charge-to-mass ratio of the black particles 101 is greater than that of the red particles 103, when an electric field is generated by applying voltage to the first electrode 11 and the second electrode 12, the moving speed of the black particles 101 is greater than that of the red particles 103. That is, the black particles 101 are more active. Therefore, by applying a large negative second voltage V2 to the red particles 103, the black particles 101 can be driven more quickly relative to the red particles 103 to a position away from the display side of the electronic paper display device, thereby increasing the distance between the black particles 101 and the red particles 103 and separating them. Then, a small positive third voltage V3 is applied to the red particle 103, re-driving the red particle 103, which is far from the display side of the electronic paper display device, back to the display side of the electronic paper display device. After each application of the tenth sub-drive signal 014, the red particle 103 can be brought closer to the display side of the electronic paper display device relative to the black particle 101. By applying the tenth sub-drive signal 014 multiple times, the distance between the red particle 103 and the black particle 101 can be gradually increased, and red display can be gradually achieved.

[0080] In some embodiments, such as Figure 6 As shown, the third driving signal 03 also includes a twelfth sub-driving signal 034 in the second sub-display stage T42. The twelfth sub-driving signal 034 is applied synchronously with the second voltage V2 of the tenth sub-driving signal 014 to drive the white particles 102 closer to the display side relative to the black particles 101 and the red particles 103, and to drive the black particles 101 away from the display side of the electronic paper display device relative to the red particles 103. When the black particles 101 and the red particles 103 are positively charged and the white particles 102 are negatively charged, the twelfth sub-driving signal 034 is a negative voltage pulse signal.

[0081] In the second sub-display stage T42, a large negative second voltage V2 is applied to the first electrode 11 in the red microstructure 10. On the one hand, this can drive the black particles 101 to move away from the display side of the electronic paper display device. At the same time, a negative voltage pulse signal (i.e., the twelfth sub-drive signal 034) is applied to the first electrode 11 in the white microstructure 10, which can drive the white particles 102 to move towards the display side of the electronic paper display device, removing the black at the edges of the red characters and improving the situation of blackening of red characters on white background. On the other hand, it can also enhance the display effect of white radar lines.

[0082] In some embodiments, such as Figure 5 As shown, the duration t1 of the negative voltage in the ninth sub-drive signal 033 is greater than the duration t2 of the positive voltage, that is, the pulse width of the negative voltage in the ninth sub-drive signal 033 is greater than the pulse width of the positive voltage.

[0083] Before the white particles 102 are driven to move toward the display side of the electronic paper display device in the second sub-display stage T42, in the first sub-display stage T41, the duration of the positive and negative voltages in the ninth sub-drive signal 033 is controlled to achieve uniformity of duration, which can better control the position of the white particles 102, reduce the white chromaticity A value, and thus improve the white imaging effect.

[0084] In some embodiments, such as Figure 6 As shown, the voltage of the second electrode 12 also includes an AC third pulse signal 200 in the third sub-display stage T43. The third pulse signal 200 has the same absolute value as the effective voltage of the second voltage V2 of the eleventh sub-drive signal 015 but opposite polarity, and is used to drive the white particles 102 in the red-displaying microstructure 10 to approach the display side of the electronic paper display device relative to the red particles 103 and the black particles 101. That is, the third pulse signal 200 is a positive voltage signal, and the absolute value of its effective voltage is the same as the absolute value of the effective voltage of the second voltage V2.

[0085] Because the red particles 103 are driven to approach the display side of the electronic paper display device relative to the black particles 101 and white particles 102 using the seventh sub-driving signal 013 and the tenth sub-driving signal 014 respectively in the first sub-display stage T41 and the second sub-display stage T42, and the white particles 102 are driven to approach the display side of the electronic paper display device relative to the black particles 101 and red particles 103 using the twelfth sub-driving signal 034 in the second sub-display stage T42, the brightness of the red display screen decreases, resulting in poor red optical display effect. In this embodiment of the present disclosure, a third pulse signal 200 is applied to the second electrode 12 in the third sub-display stage T43, causing the absolute value of the potential difference between the second electrode 12 and the first electrode 11 to double, significantly increasing the potential difference and enhancing the effect of driving the red particles 103 to move, thereby greatly improving the red optical display effect.

[0086] The second driving signal 02 also includes a thirteenth sub-driving signal 024 in the third sub-display stage T43, and the third driving signal 03 also includes a fourteenth sub-driving signal 035 in the third sub-display stage T43. The thirteenth sub-driving signal 024 and the fourteenth sub-driving signal 035 are applied synchronously with the third pulse signal 200, and their absolute values ​​of effective voltage are equal to and have the same voltage polarity as the third pulse signal 200. That is, the thirteenth sub-driving signal 024 and the fourteenth sub-driving signal 035 are positive voltage signals, and their absolute values ​​of effective voltage are the same as the absolute values ​​of effective voltage of the second voltage V2.

[0087] Since the third pulse signal 200 is a positive voltage signal, it can also drive the white particles 102 to move towards the display side of the electronic paper display device, resulting in a decrease in the brightness of the red display screen. In order to solve this problem, in this embodiment of the present disclosure, while applying the AC third pulse signal 200 to the second electrode 12 in the third sub-display stage T43, a thirteenth sub-drive signal 024 is applied to the first electrode 11 for displaying black microstructure 10, and a fourteenth sub-drive signal 035 is applied to the first electrode 11 for displaying white microstructure 10, so as to balance the third pulse signal 200 applied to the second electrode 12, cancel the defect of reduced brightness of the red display screen caused by the third pulse signal 200, improve the display effect of white background with red text and improve the display effect of black optics.

[0088] In some embodiments, such as Figure 7 As shown, the display stage T4 also includes a fourth sub-display stage T44, and the first drive signal 01 also includes a fifteenth sub-drive signal 016 in the fourth sub-display stage T44. The fifteenth sub-drive signal 016 includes at least two second pulse repetition units, and the second pulse repetition unit includes a third voltage V3 and a zero voltage applied sequentially to the first electrode 11.

[0089] The second driving signal 02 also includes a sixteenth sub-driving signal 025 in the fourth sub-display stage T44. The sixteenth sub-driving signal 025 includes at least two third pulse repetition units, each of which includes a first voltage V1 and a zero voltage applied sequentially to the first electrode 11.

[0090] In the fourth sub-display stage T44, a smaller positive third voltage V3 and a larger positive third voltage V1 are applied to the first electrode 11 in the microstructure 10 used to display red and the first electrode 11 in the microstructure 10 used to display black, respectively. At the same time, the red particles 103 and the black particles 101 are driven to move towards the display side of the electronic paper display device, thereby increasing the red display brightness. The black particles 101 move closer to the display side of the electronic paper display device faster than the red particles 103, thereby enhancing the display effect of red background and black text.

[0091] In some embodiments, such as Figure 8 As shown, the display stage T4 also includes a fifth sub-display stage T45 and a sixth sub-display stage T46. The first driving signal 01 also includes a seventeenth sub-driving signal 017 in the fifth sub-display stage and an eighteenth sub-driving signal 018 in the sixth sub-display stage. The seventeenth sub-driving signal 017 and the eighteenth sub-driving signal 018 are used to drive the red particles 103 in the red microstructure 10 to be closer to the display side of the electronic paper display device relative to the white particles 102 and the black particles 101 in the fifth sub-display stage T45 and the sixth sub-display stage T46.

[0092] The seventeenth driving signal 017 includes a fourth pulse signal 0171 and a fifth pulse signal 0172 sequentially applied to the first electrode 11. The absolute values ​​and polarities of the fourth pulse signal 0171 and the fifth pulse signal 0172 are the same as the effective voltage of the third voltage V3. It should be noted that the duration of the fourth pulse signal 0171 can be less than the duration of the fifth pulse signal 0172, or the duration of the fourth pulse signal 0171 can be equal to the duration of the fifth pulse signal 0172. In this embodiment, as shown... Figure 8 As shown, the duration of the fourth pulse signal 0171 is less than the duration of the fifth pulse signal 0172, that is, the pulse width of the fourth pulse signal 0171 is less than the pulse width of the fifth pulse signal 0172.

[0093] The eighteenth driving signal 018 includes a sixth pulse signal, which has the same effective voltage value as the fourth pulse signal 0171 and the fifth pulse signal 0172.

[0094] In the fifth sub-display stage T45 and the sixth sub-display stage T46, the red particles 103 in the red display microstructure 10 are driven to move toward the display side of the electronic paper display device using the seventeenth sub-drive signal 017 and the eighteenth sub-drive signal 018, in order to improve the bezel line and enhance the red display effect in the edge area of ​​the electronic paper display device.

[0095] In some embodiments, such as Figure 8 As shown, the third driving signal 03 also includes a nineteenth sub-driving signal 036 in the fifth sub-display stage T45. The nineteenth sub-driving signal 036 is used in the fifth sub-display stage T45 to drive the white particles 102 in the white microstructure 10 towards the display side of the electronic paper display device relative to the red particles 103 and black particles 101. The nineteenth driving signal 036 is located between the fourth pulse signal 0171 and the fifth pulse signal 0172. When the black particles 101 and red particles 103 are positively charged and the white particles 102 are negatively charged, the nineteenth sub-driving signal 036 is a negative voltage pulse signal.

[0096] Since the red particles 103 are driven to move toward the display side of the electronic paper display device in both the third sub-display stage T43 and the fourth sub-display stage T44, it will affect the white text that needs to be displayed. In order to solve the above problem, in the fifth sub-display stage T45, the nineteenth sub-driving signal 036 is used to drive the white particles 102 toward the display side of the electronic paper display device, which can improve the display effect of white text and enhance the display effect of white radar lines.

[0097] In some embodiments, such as Figure 8 As shown, the second driving signal 02 also includes a twentieth sub-driving signal 026 in the sixth sub-display stage T46. The twentieth sub-driving signal 026 is used to drive the black particles 101 in the black display microstructure 10 to approach the display side of the electronic paper display device relative to the red particles 103 and the white particles 102. The absolute value of the effective voltage of the twentieth sub-driving signal 026 is greater than the absolute value of the effective voltage of the eighteenth sub-driving signal 018, and the start time of the effective voltage of the twentieth sub-driving signal 026 is earlier than the start time of the effective voltage of the eighteenth sub-driving signal 018. That is, first, the black particles 101 in the black display microstructure 10 are driven to approach the display side of the electronic paper display device relative to the red particles 103 and the white particles 102, and then the red particles 103 in the red display microstructure 10 are driven to approach the display side of the electronic paper display device relative to the black particles 101 and the white particles 102.

[0098] In the prior art, during the display stage T4, the black particles 101 in the microstructure 10 displaying black are first driven to move closer to the display side of the electronic paper display device relative to the red particles 103 and white particles 102. Then, the red particles 103 in the microstructure 10 displaying red are driven to move closer to the display side of the electronic paper display device relative to the black particles 101 and white particles 102. Since a negative voltage is subsequently applied to the first electrode 11 in the microstructure 10 displaying red, this will affect the black display effect. In the embodiment of this disclosure, the red particles 103 in the microstructure 10 displaying red are driven to move towards the display side of the electronic paper display device during the first sub-display stage T41, the second sub-display stage T42, the third sub-display stage T43, the fourth sub-display stage T44, and the fifth sub-display stage T45. Then, the black particles 101 in the microstructure 10 displaying black are driven to move towards the display side of the electronic paper display device during the sixth sub-display stage T46. This will not affect the display of black text and will improve the display effect of black text on a red background.

[0099] In some embodiments, the driving phase of the electronic paper display device further includes a second homogenization phase T3, which occurs after the balancing phase T2 and before the display phase T4. Figure 9 As shown, the first driving signal 01, the second driving signal 02, and the third driving signal 03 respectively include the twenty-first sub-driving signal 019, the twenty-second sub-driving signal 027, and the twenty-third sub-driving signal 037 in the second homogenization stage T3; wherein, the twenty-first sub-driving signal 019, the twenty-second sub-driving signal 027, and the twenty-third sub-driving signal 037 all include pulse signals with alternating positive and negative voltages.

[0100] After the balancing phase T2, homogenization is performed again to separate black particles 101, white particles 102, and red particles 103, so that the various particles are concentrated in the corresponding positions in the microstructure 10 space according to their colors and maintain an appropriate spacing, thereby reducing the accumulation speed of afterimages caused by screen switching.

[0101] In this embodiment, the number of pulse signals for the twenty-first sub-drive signal 019, the twenty-second sub-drive signal 027, and the twenty-third sub-drive signal 037 is not limited and can be specifically set as needed. (Appendix) Figure 9 The illustration only uses an example containing a first pulse signal.

[0102] In some embodiments, such as Figure 10As shown, the first driving signal 01 further includes a twenty-fourth sub-driving signal 010 in the equilibrium phase T2, the second driving signal 02 further includes a twenty-fifth sub-driving signal 028 in the equilibrium phase T2, and the third driving signal 03 further includes a twenty-sixth sub-driving signal 038 in the equilibrium phase T2. The twenty-fourth sub-driving signal 010, the twenty-fifth sub-driving signal 028, and the twenty-sixth sub-driving signal 038 are used to make the total charge of the black particles 101, white particles 102, and red particles 103 within the microstructure 10 equal to zero.

[0103] It should be noted that, due to limitations in IC functionality and EPD (Electrophoretic, E-Paper) power consumption, the solutions in this disclosure can be applied to 5.65-12 inch electronic paper display devices.

[0104] The driving method for the electronic paper display device provided in this disclosure performs homogenization before the balancing phase T2, completely dispersing the positions of charged particles at the end of the previous frame, thereby achieving a better imaging effect.

[0105] This embodiment shortens the existing two balancing stages to one and increases the time of the display stage T4, which is beneficial for adjusting the image during the display stage T4. During the first sub-homogenization stage T11 and the third sub-display stage T43, an AC voltage signal is applied to the second electrode 12, simultaneously supplying power to the second electrode 12 and the first electrode 11. This increases the potential difference within the microstructure, which can more effectively drive the movement of charged particles.

[0106] In this embodiment, while applying an AC third pulse signal 200 to the second electrode 12 during the third sub-display stage T43, a thirteenth sub-drive signal 024 is applied to the first electrode 11 for displaying black microstructure 10, and a fourteenth sub-drive signal 035 is applied to the first electrode 11 for displaying white microstructure 10. This is to balance the third pulse signal 200 applied to the second electrode 12, counteract the defect of reduced brightness of the red display screen caused by the third pulse signal 200, improve the display effect of red text on white background, and improve the display effect of black optics.

[0107] In this embodiment, the order in which the red particles 103 and the black particles 101 are driven to move toward the display side of the electronic paper display device is changed compared to the prior art. First, the red particles 103 in the red microstructure 10 are driven to move toward the display side of the electronic paper display device in the first sub-display stage T41, the second sub-display stage T42, and the third sub-display stage T43. Then, the black particles 101 in the black microstructure 10 are driven to move toward the display side of the electronic paper display device in the fourth sub-display stage T44 and the sixth sub-display stage T46. This does not affect the display of black text and improves the display effect of red background and black text.

[0108] In this embodiment of the present disclosure, before the white particles 102 of the microstructure 10 that displays white are driven to move toward the display side of the electronic paper display device in the second sub-display stage T42, the duration of the positive and negative voltages in the ninth sub-drive signal 033 is controlled in the first sub-display stage T41 to achieve uniformity of duration. This allows for better control of the position of the white particles 102, reduces the white chromaticity A value, and thus improves the white imaging effect.

[0109] Secondly, such as Figure 11 As shown, this embodiment of the present disclosure provides an electronic paper display device, including a plurality of microstructures 10 and a first electrode 11 and a second electrode 12 disposed on opposite sides of each microstructure 10; the microstructure 10 includes black particles 101, white particles 102 and red particles 103, the black particles 101 and white particles 102 carry opposite charges, and the black particles 101 and red particles 103 carry the same charges; the charge-to-mass ratio of the black particles 101 is greater than the charge-to-mass ratio of the red particles 103.

[0110] The first driving stage of the electronic paper display device is the first homogenization stage T1, which includes a first sub-homogenization stage T11. The driving stage of the electronic paper display device also includes a balancing stage T2 and a display stage T4, with the balancing stage T2 preceding the display stage T4.

[0111] like Figure 11 As shown, the electronic paper display device further includes a processor 20, which is configured to, according to the image to be displayed, apply a first driving signal 01 to the first electrode in the microstructure 10 that needs to display black, apply a second driving signal 02 to the first electrode 11 in the microstructure 10 that needs to display white, and apply a third driving signal 03 to the first electrode 11 in the microstructure 10 that needs to display red; wherein, the first driving signal 01 includes the first sub-driving signal 011 in the first sub-homogenization stage T11, the second driving signal 02 includes the second sub-driving signal 021 in the first sub-homogenization stage T11, and the third driving signal 03 includes the first sub-homogenization... The third sub-driving signal 031 of the first sub-homogenization stage T11; the first sub-driving signal 011, the second sub-driving signal 021 and the third sub-driving signal 031 include a first pulse signal in the first sub-homogenization stage T11 in which negative voltage, zero voltage and positive voltage alternate in sequence; and, applying a voltage signal to the second electrode in the microstructure 10, the voltage signal including an AC second pulse signal 100 in the first sub-homogenization stage T11 in which positive voltage, zero voltage and negative voltage alternate in sequence, the first pulse signal of the first electrode 11 and the second pulse signal 100 of the second electrode 12 opposite to the first electrode 11 have the same absolute value and opposite voltage polarity.

[0112] In the electronic paper display device of this embodiment, the first sub-homogenization stage T11 of the driving phase precedes the equilibrium stage T2, and the first driving signal 01, the second driving signal 02, and the third driving signal 03 are respectively included in the first sub-homogenization stage T11 as the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031. Each of the first sub-driving signal 011, the second sub-driving signal 021, and the third sub-driving signal 031 includes a first pulse signal that alternates between negative voltage, zero voltage, and positive voltage. Therefore, the black particles 101, white particles 102, and red particles 103 in each microstructure 10 can be sufficiently separated and uniformly mixed in the first sub-homogenization stage T11, thereby reducing the probability of afterimages. Furthermore, the absolute value of the potential difference between the second electrode 12 and the first electrode 11 is doubled, significantly increasing the potential difference and enhancing the effect of driving the charged particles to move.

[0113] It should be noted that the explanation and effects of processor 20 can be found in the driving method of electronic paper display devices, and will not be repeated here.

[0114] Thirdly, embodiments of this disclosure also provide a non-transient computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described driving methods for an electronic paper display device.

[0115] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure / utility model, and this disclosure / utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this disclosure / utility model, and these modifications and improvements are also considered to be within the protection scope of this disclosure / utility model.

Claims

1. A driving method of an electronic paper display device, characterized by, The electronic paper display device comprises a plurality of microstructures and first electrodes and second electrodes arranged on opposite sides of each microstructure; the microstructure comprises black particles, white particles and red particles, the black particles and the white particles have opposite electric charges, the black particles and the red particles have the same electric charge; the charge mass ratio of the black particles is greater than that of the red particles; characterized in that, The first driving stage of the electronic paper display device is a first uniformization stage, the first uniformization stage comprises a first sub-uniformization stage, the driving stage of the electronic paper display device further comprises a balance stage and a display stage, the balance stage is before the display stage; the driving method of the electronic paper display device comprises: According to the image to be displayed, a first driving signal is applied to the first electrode in the microstructure needing to display black, a second driving signal is applied to the first electrode in the microstructure needing to display white, and a third driving signal is applied to the first electrode in the microstructure needing to display red; wherein the first driving signal comprises a first sub-driving signal in the first sub-uniformization stage, the second driving signal comprises a second sub-driving signal in the first sub-uniformization stage, and the third driving signal comprises a third sub-driving signal in the first sub-uniformization stage; the first sub-driving signal, the second sub-driving signal and the third sub-driving signal comprise a first pulse signal of positive voltage, zero voltage and negative voltage in the first sub-uniformization stage; A voltage signal is applied to the second electrode in the microstructure, the voltage signal comprises an alternating current second pulse signal of positive voltage, zero voltage and negative voltage in the first sub-uniformization stage, and the effective voltage of the first pulse signal of the first electrode and the second pulse signal of the second electrode opposite to the first electrode has equal absolute value and opposite polarity; The driving stage of the electronic paper display device further comprises a second uniformization stage, the second uniformization stage is after the balance stage and before the display stage; the first driving signal, the second driving signal and the third driving signal respectively comprise a twenty-first sub-driving signal, a twenty-second sub-driving signal and a twenty-third sub-driving signal in the second uniformization stage; wherein the twenty-first sub-driving signal, the twenty-second sub-driving signal and the twenty-third sub-driving signal all comprise pulse signals of positive voltage and negative voltage in turn.

2. The method of claim 1, wherein, The first uniformization stage further comprises a second sub-uniformization stage, the second sub-uniformization stage is before the balance stage and after the first sub-uniformization stage; The first driving signal further comprises a plurality of repeated fourth sub-driving signal units in the second sub-uniformization stage, the second driving signal further comprises a plurality of repeated fifth sub-driving signal units in the second sub-uniformization stage, and the third driving signal further comprises a plurality of repeated sixth sub-driving signal units in the second sub-uniformization stage; The first driving signal further comprises a plurality of repeated fourth sub-driving signal units in the second sub-uniformization stage, the second driving signal further comprises a plurality of repeated fifth sub-driving signal units in the second sub-uniformization stage, and the third driving signal further comprises a plurality of repeated sixth sub-driving signal units in the second sub-uniformization stage; Each of the fourth, fifth and sixth sub-driving signal units comprises pulse signals of positive and negative voltages alternating in sequence and zero voltage after the pulse signals.

3. The method of claim 2, wherein, The first, second and third driving signals are applied for a first time length in the first sub-uniformization stage, and for a second time length in the second sub-uniformization stage, the first time length being less than the second time length.

4. The method of claim 2, wherein, The display stage comprises a first sub-display stage, the first driving signal further comprises a seventh sub-driving signal in the first sub-display stage, the seventh sub-driving signal being used to drive the red particles in the micro-structure displaying red to be close to the display side of the electronic paper display device relative to the white and black particles, the seventh sub-driving signal comprising at least two first pulse repetition units, each first pulse repetition unit comprising zero voltage and first voltage applied to the first electrode in sequence; The second driving signal further comprises an eighth sub-driving signal in the first sub-display stage, the eighth sub-driving signal comprising pulse signals of negative and positive voltages alternating in sequence, the positive voltage pulse signal of the eighth sub-driving signal being synchronized with one of the first pulse repetition units in the seventh sub-driving signal; The third driving signal further comprises a ninth sub-driving signal in the first sub-display stage, the ninth sub-driving signal comprising pulse signals of negative and positive voltages alternating in sequence, the positive voltage pulse signal of the ninth sub-driving signal being synchronized with another of the first pulse repetition units in the seventh sub-driving signal.

5. The method of claim 4, wherein, The display stage further comprises a second sub-display stage and a third sub-display stage, the first driving signal further comprising a tenth sub-driving signal in the second sub-display stage and an eleventh sub-driving signal in the third sub-display stage, the tenth and eleventh sub-driving signals comprising second, zero and third voltages applied to the first electrode in sequence, wherein the second voltage is used to drive the black particles in the micro-structure displaying red to be away from the display side of the electronic paper display device relative to the red and white particles, and the third voltage is used to drive the red particles in the micro-structure displaying red to be close to the display side of the electronic paper display device relative to the black and white particles; the absolute value of the effective voltage of the second voltage is equal to that of the first voltage and greater than that of the third voltage, and the voltage polarity of the second voltage is opposite to that of the first and third voltages.

6. The method of claim 5, wherein, The third driving signal further comprises a twelfth sub-driving signal in the second sub-display stage, the twelfth sub-driving signal being applied synchronously with the second voltage of the tenth sub-driving signal, and being used to drive the white particles to be close to the display side of the electronic paper display device relative to the black and red particles, and to drive the black particles to be away from the display side of the electronic paper display device relative to the red particles.

7. The method of claim 6, wherein, The duration of the negative voltage in the ninth sub-driving signal is greater than the duration of the positive voltage.

8. The method of claim 5, wherein, The voltage of the second electrode further includes a third pulse signal of an alternating current in the third sub-display stage, the third pulse signal is the same as the absolute value of the effective voltage of the second voltage of the eleventh sub-driving signal and opposite in polarity, for driving the white particles in the microstructure displaying red to be close to the display side of the electronic paper display device relative to the red particles and the black particles; The second driving signal further includes a thirteenth sub-driving signal in the third sub-display stage, the third driving signal further includes a fourteenth sub-driving signal in the third sub-display stage, the thirteenth sub-driving signal and the fourteenth sub-driving signal are synchronously applied with the third pulse signal, and are equal to the absolute value of the effective voltage of the third pulse signal and the same in voltage polarity.

9. The method of claim 8, wherein, The display stage further includes a fourth sub-display stage, and the first driving signal further includes a fifteenth sub-driving signal in the fourth sub-display stage, the fifteenth sub-driving signal includes at least two second pulse repetition units, and the second pulse repetition unit includes a third voltage and a zero voltage applied to the first electrode in sequence; The second driving signal further includes a sixteenth sub-driving signal in the fourth sub-display stage, and the sixteenth sub-driving signal includes at least two third pulse repetition units, and the third pulse repetition unit includes a first voltage and a zero voltage applied to the first electrode in sequence.

10. The method of claim 9, wherein, The display stage further includes a fifth sub-display stage and a sixth sub-display stage, and the first driving signal further includes a seventeenth sub-driving signal in the fifth sub-display stage and an eighteenth sub-driving signal in the sixth sub-display stage, the seventeenth sub-driving signal and the eighteenth sub-driving signal are used to drive the red particles in the microstructure displaying red to be close to the display side of the electronic paper display device relative to the white particles and the black particles in the fifth sub-display stage and the sixth sub-display stage; The seventeenth sub-driving signal includes a fourth pulse signal and a fifth pulse signal applied to the first electrode in sequence, and the fourth pulse signal and the fifth pulse signal are the same as the absolute value and polarity of the effective voltage of the third voltage; The eighteenth sub-driving signal includes a sixth pulse signal, and the sixth pulse signal is the same as the effective voltage value of the fourth pulse signal and the fifth pulse signal.

11. The method of claim 10, wherein, The third driving signal further includes a nineteenth sub-driving signal in the fifth sub-display stage, the nineteenth sub-driving signal is used to drive the white particles in the microstructure displaying white to be close to the display side of the electronic paper display device relative to the red particles and the black particles in the fifth sub-display stage, and the nineteenth sub-driving signal is between the fourth pulse signal and the fifth pulse signal.

12. The method of claim 10, wherein, The second driving signal further comprises a twentieth sub-driving signal in the sixth sub-display stage, the twentieth sub-driving signal is used for driving the black particles in the micro-structure to be close to the display side of the electronic paper display device relative to the red particles and the white particles when displaying black color, and the absolute value of the effective voltage of the twentieth sub-driving signal is greater than the absolute value of the effective voltage of the eighteenth sub-driving signal; the starting time of the effective voltage of the twentieth sub-driving signal is earlier than the starting time of the effective voltage of the eighteenth sub-driving signal.

13. The method of any one of claims 1-12, wherein, The first driving signal further comprises a twenty-fourth sub-driving signal in the balance stage, the second driving signal further comprises a twenty-fifth sub-driving signal in the balance stage, and the third driving signal further comprises a twenty-sixth sub-driving signal in the balance stage. The twenty-fourth sub-driving signal, the twenty-fifth sub-driving signal and the twenty-sixth sub-driving signal are used for making the total number of charges of the black particles, the white particles and the red particles in the micro-structure equal to zero.

14. An electronic paper display device, characterized by comprising: The electronic paper display device comprises a plurality of micro-structures, and a first electrode and a second electrode arranged on opposite sides of each micro-structure; the micro-structure comprises black particles, white particles and red particles, the black particles and the white particles have opposite electric charges, and the black particles and the red particles have the same electric charges; the charge mass ratio of the black particles is greater than the charge mass ratio of the red particles. The first driving stage of the electronic paper display device is a first uniformization stage, the first uniformization stage comprises a first sub-uniformization stage, the driving stage of the electronic paper display device further comprises a balance stage, a second uniformization stage and a display stage, and the balance stage is before the second uniformization stage and the display stage. The electronic paper display device further comprises a processor for executing a computer program stored therein to implement the method of any one of claims 1-13, applying a first driving signal to the first electrode in the microstructure requiring display of black, applying a second driving signal to the first electrode in the microstructure requiring display of white, applying a third driving signal to the first electrode in the microstructure requiring display of red; wherein the first driving signal comprises a first sub-driving signal in the first sub-uniformization stage, the second driving signal comprises a second sub-driving signal in the first sub-uniformization stage, and the third driving signal comprises a third sub-driving signal in the first sub-uniformization stage; the first sub-driving signal, the second sub-driving signal and the third sub-driving signal comprise first pulse signals of negative voltage, zero voltage and positive voltage in the first sub-uniformization stage; and applying a voltage signal to the second electrode in the microstructure, the voltage signal comprising alternating AC second pulse signals of positive voltage, zero voltage and negative voltage in the first sub-uniformization stage, the effective voltage of the first pulse signal of the first electrode and the second pulse signal of the second electrode opposite to the first electrode being equal in absolute value and opposite in voltage polarity; The first driving signal, the second driving signal and the third driving signal respectively comprise twenty-first sub-driving signal, twenty-second sub-driving signal and twenty-third sub-driving signal in the second uniformization stage; wherein the twenty-first sub-driving signal, the twenty-second sub-driving signal and the twenty-third sub-driving signal each comprise pulse signals of positive and negative voltage in turn.

15. A non-transitory computer readable medium having stored thereon a computer program, the program being executed by a processor to implement the method of any one of claims 1-13.

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