A low-power method for eliminating electronic paper ghosting and electronic paper

Abstract

This invention discloses a low-power method for eliminating electronic paper ghosting and an electronic paper. The method includes: dividing the ambient temperature into a first temperature range, a second temperature range, and a third temperature range with progressively decreasing temperatures based on the viscosity of the solvent in the microcapsules of the electronic paper at different temperatures; during the electronic paper driving process, using a temperature detection unit to detect the current ambient temperature in real time to obtain the temperature range in which the current ambient temperature is located; if the current ambient temperature is in the second temperature range, pre-outputting a first pre-oscillation voltage waveform to the driving unit; before the formal output of the driving voltage, if the current ambient temperature is in the third temperature range, sequentially pre-outputting a second, third, and fourth pre-oscillation voltage waveform to the driving unit in stages to desorb particles and eliminate ghosting; while avoiding increased power consumption during ghosting elimination, the method improves the ghosting elimination effect.

Description

Technical Field

[0001] This invention relates to the field of electronic paper ghosting elimination technology, and particularly to a low-power method for eliminating electronic paper ghosting and electronic paper. Background Technology

[0002] Electronic paper using electrophoretic display (EPD) technology has become a very important information display medium. With its advantages such as low power consumption, paper-like visual effect, and flexibility, it is widely used in e-readers, smart labels, electronic price tags, and other fields. It possesses excellent bistable characteristics, consuming almost no power during static display, making it an energy-saving and environmentally friendly display technology.

[0003] The display layer of electronic paper consists of millions of microcapsules, each about the thickness of a human hair. Inside each microcapsule is a transparent liquid, positively charged white particles (usually titanium dioxide), and negatively charged black particles (carbon-based pigments). These microcapsules are sandwiched between a transparent front electrode and a pixelated rear electrode, forming independent, controllable pixel units. When a positive voltage is applied to a pixel, the positively charged white particles are attracted by the electric field and move upwards to the top of the microcapsule, reflecting ambient light and making the pixel appear white. The negatively charged black particles are repelled by the electric field and move downwards to the bottom, becoming invisible. Applying a reverse voltage displays black.

[0004] However, electrophoretic electronic paper suffers from a significant technical challenge: image retention. Especially at low temperatures, the viscosity of the electronic ink increases significantly, reducing the migration rate of charged particles. During image transitions, some particles fail to reach their target positions in time or become adhered to the microcapsule walls, resulting in image artifacts from the previous frame remaining in the new image and affecting display quality. At low temperatures, conventional driving parameters are insufficient to drive particle migration effectively, limiting the improvement in image retention. Simply increasing the driving voltage or extending the driving time leads to a substantial increase in power consumption, contradicting the core advantage of low power consumption in electronic paper. Therefore, a solution for improving image retention that can dynamically adjust the driving strategy based on ambient temperature is urgently needed. Summary of the Invention

[0005] In existing technologies, electrophoretic electronic paper exhibits increased particle viscosity and decreased migration rate in low-temperature environments, leading to display ghosting.

[0006] To address the aforementioned issues, a low-power method for eliminating electronic paper ghosting and an electronic paper itself are proposed. By dividing the temperature range, the pre-oscillation voltage output is only activated when the environment is within the corresponding temperature range, thus avoiding increased power consumption during ghosting elimination. In the low-temperature range, the ghosting elimination effect is improved by outputting the pre-oscillation voltage waveform in stages. This solves the problem in existing electrophoretic electronic paper where increased particle viscosity and decreased mobility in low-temperature environments lead to display ghosting.

[0007] Firstly, a low-power method for eliminating electronic paper ghosting includes: Step 100: Based on the viscosity of the solvent in the microcapsule of electronic paper at different temperatures, the ambient temperature is divided into a first temperature range, a second temperature range, and a third temperature range with the temperature decreasing sequentially. Step 200: During the electronic paper driving process, the current ambient temperature is detected in real time using a temperature detection unit to obtain the temperature range of the current ambient temperature; Step 300: Before the formal output of the driving voltage, if the current ambient temperature is in the second temperature range, the first pre-oscillation voltage waveform is pre-output to the driving unit to assist particle migration. Step 400: Before the formal output of the driving voltage, if the current ambient temperature is in the third temperature range, the second pre-oscillation voltage waveform, the third pre-oscillation voltage waveform, and the fourth pre-oscillation voltage waveform are sequentially pre-output to the driving unit in stages to desorb the particles and eliminate the afterimage. The second pre-oscillation voltage waveform is in the rising phase, used to activate particles; The third pre-oscillation voltage waveform is in the high-frequency vibration stage, which is used to desorb and loosen the electrophoretic particles from the microcapsule wall; The fourth pre-oscillation voltage waveform is in a falling and holding phase, used to maintain the loose state of the particles in order to migrate; The first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude of the falling holding phase.

[0008] In conjunction with the low-power elimination method for electronic paper ghosting described in the first aspect of the present invention, in a first possible embodiment, step 300 includes: Step 310: Determine the first duty cycle, first frequency, first voltage amplitude, and first duration based on the second temperature range; Step 320: Based on the first duty cycle, the first frequency, and the first voltage amplitude, output the first pre-oscillation voltage waveform to the driving unit for the first duration.

[0009] In conjunction with the first possible implementation of the first aspect of the present invention, in the second possible implementation, the first duty cycle is 50%, the first frequency is 50Hz, the first voltage amplitude is 5V, and the first duration is 300ms.

[0010] In conjunction with the low-power elimination method for electronic paper ghosting described in the first aspect of the present invention, in a third possible embodiment, step 400 includes: Step 410: Determine the second duty cycle, frequency rise range, amplitude rise range, and second duration of the second pre-oscillation voltage waveform based on the third temperature range; Step 420: Based on the second duty cycle, frequency rise range, amplitude rise range, and second duration, output the second pre-oscillation voltage waveform to the driving unit.

[0011] In conjunction with the third possible implementation of the first aspect of the present invention, in the fourth possible implementation, the second duty cycle is 50%, the frequency rise range is 10-50Hz, the amplitude rise range is 0-25V, and the second duration is 200ms.

[0012] In conjunction with the third possible implementation of the first aspect of the present invention, in the fifth possible implementation, step 400 further includes: Step 430: Determine the third duty cycle, the second frequency, and the third duration based on the second temperature range; Step 440: After the amplitude of the second pre-oscillation voltage waveform reaches its peak value, continue to pre-output the third pre-oscillation voltage waveform to the driving unit with the peak amplitude, the third duty cycle, the second frequency, and the third duration.

[0013] In conjunction with the fifth possible implementation of the first aspect of the present invention, and the sixth possible implementation, the third duty cycle is 50%, the second frequency is 300Hz, the peak amplitude is 25V, and the third duration is 800ms.

[0014] In conjunction with the fifth possible implementation of the first aspect of the present invention, in the seventh possible implementation, step 400 further includes: Step 450: Determine the fourth duty cycle, frequency drop range, amplitude drop range, and fourth duration of the fourth pre-oscillation voltage waveform based on the third temperature range. Step 460: After the third pre-oscillation voltage waveform reaches the specified duration, the fourth pre-oscillation voltage waveform is pre-output to the driving unit according to the fourth duty cycle, frequency drop range, amplitude drop range and fourth duration.

[0015] In conjunction with the seventh possible implementation of the first aspect of the present invention, in the eighth possible implementation, the fourth duty cycle is 50%, the frequency drop range is 300-50Hz, the amplitude drop range is 25-5V, and the fourth duration is 300ms.

[0016] In a second aspect, an electronic paper employs a low-power method for eliminating electronic paper ghosting as described in the first aspect, comprising a control unit, a temperature detection unit, a driving unit, and a display unit; The temperature detection unit and the driving unit are electrically connected to the control unit, and the driving unit is electrically connected to the display unit. The display unit includes a transparent front electrode layer, a pixelated rear electrode layer, and a plurality of microcapsules disposed between the transparent front electrode layer and the pixelated rear electrode layer. The microcapsules contain solvent, positively charged particles, and negatively charged particles. The temperature detection unit is used to detect the current ambient temperature in real time during the electronic paper driving process, and the driving unit is used to output a driving voltage to the display unit to drive the particle movement for display. The control unit is used before the actual output drive voltage: When the current ambient temperature is within the second temperature range, a first pre-oscillation voltage waveform is pre-output to the drive unit to assist particle migration; When the current ambient temperature is within the third temperature range, the second, third, and fourth pre-oscillation voltage waveforms are sequentially pre-output to the driving unit in stages to desorb the particles and eliminate residual images. The second pre-oscillation voltage waveform is in the rising phase, used to activate particles; The third pre-oscillation voltage waveform is in the high-frequency vibration stage, which is used to desorb and loosen the electrophoretic particles from the microcapsule wall; The fourth pre-oscillation voltage waveform is in a falling and holding phase, used to maintain the loose state of the particles in order to migrate; The first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude of the falling holding phase.

[0017] The present invention provides a low-power method for eliminating electronic paper ghosting and an electronic paper that divides the temperature range and only activates the pre-oscillation voltage output when the environment is within the corresponding temperature range. This avoids increasing power consumption during ghosting elimination. In the low-temperature range, the ghosting elimination effect is improved by outputting the pre-oscillation voltage waveform in stages. This solves the problem in the prior art where the viscosity of particles increases and the mobility decreases in low-temperature environments, leading to display ghosting in electrophoretic electronic paper. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic flowchart of a specific embodiment of the low-power elimination method for electronic paper ghosting in this application; Figure 2 yes Figure 1 A flowchart illustrating a specific embodiment of step 300; Figure 3 yes Figure 1 A schematic diagram of a specific embodiment of step 400; Figure 4 yes Figure 3 A flowchart illustrating a specific embodiment following step 420; Figure 5 yes Figure 4 A flowchart of a specific embodiment following step 440; Figure 6 This is a schematic diagram of the viscosity of particles in microcapsules that have not undergone image retention elimination in a low-temperature environment; Figure 7 This is a schematic diagram of particle viscosity after image retention elimination in microcapsules at low temperatures. Figure 8 This is a schematic diagram of a specific embodiment of the electronic paper in this application. Detailed Implementation

[0020] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are all within the scope of protection of this invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In existing technologies, electrophoretic electronic paper exhibits increased particle viscosity and decreased migration rate in low-temperature environments, leading to display ghosting.

[0026] To address the above problems, a low-power method for eliminating electronic paper ghosting and an electronic paper itself are proposed.

[0027] Firstly, a low-power method for eliminating electronic paper ghosting, such as... Figure 1 , Figure 1 This is a schematic flowchart of a specific embodiment of the low-power elimination method for electronic paper ghosting in this application, including: Step 100: Based on the viscosity of the solvent in the electronic paper microcapsule at different temperatures, the ambient temperature is divided into a first temperature range, a second temperature range, and a third temperature range with successively decreasing temperatures.

[0028] In this embodiment, based on experimental data relating solvent viscosity and temperature inside the microcapsule, two key values ​​are preset: a low-temperature critical point T1 = 15℃ and a deep low-temperature critical point T2 = 5℃, dividing the temperature into three intervals: The first temperature range is the normal temperature range (T>15℃): the viscosity of the solvent inside the microcapsule is normal, the migration of charged particles is smooth, and the normal driving parameters can be used. The second temperature range is the mildly low temperature range (5℃<T≤15℃): the viscosity of the solvent inside the microcapsule increases slightly and the mobility of charged particles decreases, requiring slight adjustments. The third temperature range is the deep cryogenic range (T≤5℃): the viscosity of the solvent inside the microcapsules increases significantly, and particle adsorption becomes severe. Therefore, it is necessary to significantly optimize the driving parameters and introduce a pre-oscillation voltage for assistance, such as... Figure 6 , Figure 6 This is a schematic diagram of the viscosity of particles in microcapsules that have not undergone image retention elimination in a low-temperature environment.

[0029] Step 200: During the electronic paper driving process, the current ambient temperature is detected in real time using a temperature detection unit to obtain the temperature range of the current ambient temperature.

[0030] In this embodiment, the temperature detection unit can be a thermistor sensor integrated into the circuit board to collect the real-time temperature T of the electronic paper display panel. The temperature detection unit can detect temperatures ranging from -10℃ to 50℃, accurately capturing temperature changes in the low-temperature range, and does not require additional panel space, thus reducing hardware costs.

[0031] Step 300: Before the formal output of the driving voltage, if the current ambient temperature is in the second temperature range, the first pre-oscillation voltage waveform is pre-output to the driving unit to assist particle migration.

[0032] In one possible implementation, such as Figure 2 , Figure 2 yes Figure 1 A schematic flowchart of a specific embodiment of step 300; step 300 includes: Step 310: Determine the first duty cycle, first frequency, first voltage amplitude, and first duration based on the second temperature range; Step 320: Based on the first duty cycle, first frequency, and first voltage amplitude, output the first pre-oscillation voltage waveform to the drive unit for the first duration.

[0033] Preferably, the first duty cycle is 50%, the first frequency is 50Hz, the first voltage amplitude is 5V, and the first duration is 300ms.

[0034] In this embodiment, the ambient temperature has a certain influence on the viscosity of the solvent, and the particle mobility decreases. At this time, a first pre-oscillation voltage waveform with a small amplitude can be output in advance to avoid a significant decrease in particle activity.

[0035] Step 400: Before the formal output of the driving voltage, if the current ambient temperature is in the third temperature range, the second, third, and fourth pre-oscillation voltage waveforms are sequentially pre-output to the driving unit in stages to desorb the particles and eliminate residual images. The second pre-oscillation voltage waveform is in the rising stage and is used to activate the particles. The third pre-oscillation voltage waveform is in the high-frequency vibration stage and is used to desorb and loosen the electrophoretic particles from the microcapsule wall. The fourth pre-oscillation voltage waveform is in the falling and holding stage and is used to maintain the loose state of the particles for migration. Among them, the first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude of the falling and holding stage.

[0036] In one possible implementation, such as Figure 3 , Figure 3 yes Figure 1 A schematic flowchart of a specific embodiment of step 400; step 400 includes: Step 410: Determine the second duty cycle, frequency rise range, amplitude rise range, and second duration of the second pre-oscillation voltage waveform according to the third temperature range; Step 420: Pre-output the second pre-oscillation voltage waveform to the drive unit according to the second duty cycle, frequency rise range, amplitude rise range, and second duration.

[0037] Preferably, the second duty cycle is 50%, the frequency rise range is 10-50Hz, the amplitude rise range is 0-25V, and the second duration is 200ms.

[0038] In this embodiment, the voltage amplitude needs to be increased slowly to gently activate the particles and avoid splashing caused by instantaneous high voltage.

[0039] In one possible implementation, such as Figure 4 , Figure 4 yes Figure 3 A schematic diagram of a specific embodiment following step 420; step 400 further includes: step 430, determining a third duty cycle, a second frequency, and a third duration based on the second temperature range; step 440, after the amplitude of the second pre-oscillation voltage waveform reaches its peak value, continuing to pre-output the third pre-oscillation voltage waveform to the drive unit with the peak amplitude, the third duty cycle, the second frequency, and the third duration.

[0040] Preferably, the third duty cycle is 50%, the second frequency is 300Hz, the peak amplitude is 25V, and the third duration is 800ms.

[0041] In this embodiment, high-frequency mechanical vibration is used to break the van der Waals force / electrostatic force adsorption between the particles and the substrate, causing the particles to enter a "suspended and loose" state.

[0042] In one possible implementation, such as Figure 5 , Figure 5 yes Figure 4 A flowchart of a specific embodiment following step 440; step 400 further includes: Step 450: Determine the fourth duty cycle, frequency drop range, amplitude drop range, and fourth duration of the fourth pre-oscillation voltage waveform based on the third temperature range; Step 460: After the third pre-oscillation voltage waveform reaches the specified duration, output the fourth pre-oscillation voltage waveform to the drive unit based on the fourth duty cycle, frequency drop range, amplitude drop range, and fourth duration.

[0043] Preferably, the fourth duty cycle is 50%, the frequency drop range is 300-50Hz, the amplitude drop range is 25-5V, and the fourth duration is 300ms.

[0044] In this embodiment, the voltage amplitude needs to be reduced slowly to avoid sudden cessation of oscillation causing the particles to re-adsorb, maintaining a loose state for subsequent directional driving. At the same time, due to the low temperature, a certain amplitude voltage still needs to be output after the voltage is reduced to maintain particle activity.

[0045] In this embodiment, by dividing the temperature into ranges and only activating the pre-oscillation voltage output when the environment is within the corresponding temperature range, increased power consumption is avoided during image retention. In the low-temperature range, the image retention effect is improved by outputting the pre-oscillation voltage waveform in stages. Figure 7 , Figure 7 This is a schematic diagram of particle viscosity after image retention elimination in microcapsules at low temperatures; it solves the problem of image retention caused by increased particle viscosity and decreased migration rate in electrophoretic electronic paper at low temperatures in existing technologies.

[0046] Secondly, an electronic paper, such as Figure 8 , Figure 8This is a schematic diagram of a specific embodiment of the electronic paper in this application. A low-power method for eliminating electronic paper ghosting according to the first aspect includes a control unit 502, a temperature detection unit 501, a driving unit 503, and a display unit 504. The temperature detection unit 501 and the driving unit 503 are electrically connected to the control unit 502, and the driving unit 503 is electrically connected to the display unit 504. The display unit includes a transparent front electrode layer, a pixelated rear electrode layer, and multiple microcapsules disposed between the transparent front electrode layer and the pixelated rear electrode layer. The microcapsules contain solvent, positively charged particles, and negatively charged particles. The temperature detection unit is used to detect the current ambient temperature in real time during the electronic paper driving process, and the driving unit is used to output a driving voltage to the display unit to drive particle movement. The display shows that the control unit is used to pre-output a first pre-oscillation voltage waveform to the drive unit before the formal output of the driving voltage: when the current ambient temperature is in the second temperature range, it pre-outputs a second, third, and fourth pre-oscillation voltage waveform to the drive unit in stages to desorb the particles and eliminate residual images; the second pre-oscillation voltage waveform is in the rising phase to activate the particles; the third pre-oscillation voltage waveform is in the high-frequency vibration phase to desorb and loosen the electrophoretic particles from the microcapsule wall; the fourth pre-oscillation voltage waveform is in the falling and holding phase to maintain the loose state of the particles for migration. The first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude during the falling and holding phase.

[0047] The present invention discloses a low-power method for eliminating electronic paper ghosting and an electronic paper. By dividing the temperature into ranges, the pre-oscillation voltage output is only activated when the environment is within the corresponding temperature range, thus avoiding increased power consumption during ghosting elimination. In the low-temperature range, the ghosting elimination effect is improved by outputting the pre-oscillation voltage waveform in stages. This solves the problem in the prior art where the particle viscosity of electrophoretic electronic paper increases and the mobility decreases in a low-temperature environment, resulting in display ghosting.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-power method for eliminating electronic paper ghosting, characterized in that, include: Step 100: Based on the viscosity of the solvent in the microcapsule of electronic paper at different temperatures, the ambient temperature is divided into a first temperature range, a second temperature range, and a third temperature range with the temperature decreasing sequentially. Step 200: During the electronic paper driving process, the current ambient temperature is detected in real time using a temperature detection unit to obtain the temperature range of the current ambient temperature; Step 300: Before the formal output of the driving voltage, if the current ambient temperature is in the second temperature range, the first pre-oscillation voltage waveform is pre-output to the driving unit to assist particle migration. Step 400: Before the formal output of the driving voltage, if the current ambient temperature is in the third temperature range, the second pre-oscillation voltage waveform, the third pre-oscillation voltage waveform, and the fourth pre-oscillation voltage waveform are sequentially pre-output to the driving unit in stages to desorb the particles and eliminate the afterimage. The second pre-oscillation voltage waveform is in the rising phase, used to activate particles; The third pre-oscillation voltage waveform is in the high-frequency vibration stage, which is used to desorb and loosen the electrophoretic particles from the microcapsule wall; The fourth pre-oscillation voltage waveform is in a falling and holding phase, used to maintain the loose state of the particles in order to migrate; The first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude of the falling holding phase.

2. The low-power elimination method for electronic paper ghosting according to claim 1, characterized in that, Step 300 includes: Step 310: Determine the first duty cycle, first frequency, first voltage amplitude, and first duration based on the second temperature range; Step 320: Based on the first duty cycle, the first frequency, and the first voltage amplitude, output the first pre-oscillation voltage waveform to the driving unit for the first duration.

3. The low-power elimination method for electronic paper ghosting according to claim 2, characterized in that, The first duty cycle is 50%, the first frequency is 50Hz, the first voltage amplitude is 5V, and the first duration is 300ms.

4. The low-power elimination method for electronic paper ghosting according to claim 1, characterized in that, Step 400 includes: Step 410: Determine the second duty cycle, frequency rise range, amplitude rise range, and second duration of the second pre-oscillation voltage waveform based on the third temperature range; Step 420: Based on the second duty cycle, frequency rise range, amplitude rise range, and second duration, output the second pre-oscillation voltage waveform to the driving unit.

5. The low-power elimination method for electronic paper ghosting according to claim 4, characterized in that, The second duty cycle is 50%, the frequency rise range is 10-50Hz, the amplitude rise range is 0-25V, and the second duration is 200ms.

6. The low-power elimination method for electronic paper ghosting according to claim 4, characterized in that, Step 400 further includes: Step 430: Determine the third duty cycle, the second frequency, and the third duration based on the second temperature range; Step 440: After the amplitude of the second pre-oscillation voltage waveform reaches its peak value, continue to pre-output the third pre-oscillation voltage waveform to the driving unit with the peak amplitude, the third duty cycle, the second frequency, and the third duration.

7. The low-power elimination method for electronic paper ghosting according to claim 6, characterized in that, The third duty cycle is 50%, the second frequency is 300Hz, the peak amplitude is 25V, and the third duration is 800ms.

8. The low-power elimination method for electronic paper ghosting according to claim 6, characterized in that, Step 400 further includes: Step 450: Determine the fourth duty cycle, frequency drop range, amplitude drop range, and fourth duration of the fourth pre-oscillation voltage waveform based on the third temperature range. Step 460: After the third pre-oscillation voltage waveform reaches the specified duration, the fourth pre-oscillation voltage waveform is pre-output to the driving unit according to the fourth duty cycle, frequency drop range, amplitude drop range and fourth duration.

9. The low-power elimination method for electronic paper ghosting according to claim 8, characterized in that, The fourth duty cycle is 50%, the frequency drop range is 300-50Hz, the amplitude drop range is 25-5V, and the fourth duration is 300ms.

10. An electronic paper, employing a low-power method for eliminating electronic paper ghosting as described in any one of claims 1-9, characterized in that, Includes a control unit, a temperature detection unit, a drive unit, and a display unit; The temperature detection unit and the driving unit are electrically connected to the control unit, and the driving unit is electrically connected to the display unit. The display unit includes a transparent front electrode layer, a pixelated rear electrode layer, and a plurality of microcapsules disposed between the transparent front electrode layer and the pixelated rear electrode layer. The microcapsules contain solvent, positively charged particles, and negatively charged particles. The temperature detection unit is used to detect the current ambient temperature in real time during the electronic paper driving process, and the driving unit is used to output a driving voltage to the display unit to drive the particle movement for display. The control unit is used before the actual output drive voltage: When the current ambient temperature is within the second temperature range, a first pre-oscillation voltage waveform is pre-output to the drive unit to assist particle migration; When the current ambient temperature is within the third temperature range, the second, third, and fourth pre-oscillation voltage waveforms are sequentially pre-output to the driving unit in stages to desorb the particles and eliminate residual images. The second pre-oscillation voltage waveform is in the rising phase, used to activate particles; The third pre-oscillation voltage waveform is in the high-frequency vibration stage, which is used to desorb and loosen the electrophoretic particles from the microcapsule wall; The fourth pre-oscillation voltage waveform is in a falling and holding phase, used to maintain the loose state of the particles in order to migrate; The first pre-oscillation voltage waveform is a square wave, and its amplitude is equal to the holding amplitude of the falling holding phase.

Images