CN113096608A - Electrophoresis display panel, driving method thereof and display device - Google Patents

Abstract

The application discloses electrophoresis display panel and driving method, display device, electrophoresis display panel includes first electrode layer, second electrode layer and the charged particle who distributes between first electrode layer and second electrode layer, first electrode layer includes the display area and surrounds the marginal zone of display area, electrophoresis display panel still includes drive arrangement, drive arrangement is connected with first electrode layer, be used for through the first charged particle between first electrode layer and the second electrode layer of first drive waveform drive display area, and through the second drive waveform drive charged particle between the first electrode layer and the second electrode layer of marginal zone. The display effect of the edge area of the electrophoresis display panel is more flexible and controllable.

Description

Electrophoresis display panel, driving method thereof and display device

Technical Field

The embodiment of the application relates to but not limited to the technical field of display, and in particular relates to an electrophoretic display panel, a driving method thereof and a display device.

Background

Electronic Paper (E-Paper) is a display screen manufactured by using an electrophoretic display technology, and achieves an effect of displaying an image by continuously applying a waveform of a driving voltage to each pixel point through a driving integrated circuit. The three-color electronic paper is characterized in that black and white charged particles are packaged in the same capsule structure, and the three-color electronic paper is characterized in that black and white red, black and white yellow, black and white blue and other three-color charged particles are packaged in the same capsule structure, and the lifting movement of the charged particles with different charges is controlled by a positive electric field and a negative electric field applied from the outside so as to display black and white double-color and three-color display effects.

In the electronic paper in the related art, when displaying, the charged particles in the edge area and the display area are usually driven by using the same driving waveform, but because the display content in the edge area is usually relatively single, the driving method makes the driving waveform in the edge area tend to be complex, and the display effect is not well controlled.

Disclosure of Invention

The embodiment of the application provides an electrophoretic display panel, a driving method thereof and a display device, which can enable the display effect of the edge area of the electrophoretic display panel to be more flexible and controllable.

In order to solve the above technical problem, an embodiment of the present application provides an electrophoretic display panel, including a first electrode layer, a second electrode layer, and charged particles distributed between the first electrode layer and the second electrode layer, where the first electrode layer includes a display region and an edge region surrounding the display region; the electrophoretic display panel further includes a driving device, connected to the first electrode layer, for driving the charged particles between the first electrode layer and the second electrode layer of the display region by a first driving waveform, and driving the charged particles between the first electrode layer and the second electrode layer of the edge region by a second driving waveform.

Optionally, the charged particles include first to nth charged particles, N is a natural number greater than or equal to 2, and the driving device includes first to nth driving circuits corresponding to the first to nth charged particles one to one, respectively, wherein: the ith driving circuit is used for driving ith charged particles between a first electrode layer and a second electrode layer of the display area, wherein i is a natural number between 1 and N; the ith driving waveform output by the ith driving circuit comprises an ith balance stage, an ith jitter stage and an ith display stage, wherein the ith balance stage applies an ith direct current voltage to the first electrode layer of the display area, the ith display stage applies an ith data voltage to the first electrode layer of the display area, the total charge number of the applied ith direct current voltage and the ith data voltage is zero, and the ith jitter stage applies an alternating current voltage to the first electrode layer of the display area.

Optionally, the data voltage applied to the first electrode layer of the display region by the first driving circuit corresponding to the first charged particles in the first display phase is-E1 v dc voltage with duration between t11 and t12, the duration of the first display phase is between t10 and t13, and t10< t11< t12< t 13.

Optionally, the driving device further comprises an (N +1) th driving circuit, the (N +1) th driving circuit being configured to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region; the (N +1) th driving waveform output by the (N +1) th driving circuit comprises an (N +1) th balance stage and an (N +1) th display stage, wherein the (N +1) th balance stage applies an (N +1) th direct current voltage to the first electrode layer of the edge region, the (N +1) th display stage applies an (N +1) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +1) th direct current voltage and the (N +1) th data voltage is zero; the (N +1) th data voltage is applied as-E1 VDC voltage having a duration between t14 and t13, the duration of the (N +1) th display phase is t 10-t 13, t10< t11< t12< t14< t 13.

Optionally, the driving device further comprises an (N +2) th driving circuit, the (N +2) th driving circuit being configured to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region; the (N +2) th driving waveform output by the (N +2) th driving circuit includes an (N +2) th balancing stage and an (N +2) th display stage, the (N +2) th balancing stage applies an (N +2) th direct current voltage to the first electrode layer of the edge region, the (N +2) th display stage applies an (N +2) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +2) th direct current voltage and the (N +2) th data voltage is zero; the (N +2) th data voltage applied includes: the voltage of-E1 with the duration between t11 and t12 and the voltage of-E2 with the duration between t12 and t13, the maintaining time of the (N +2) th display stage is t 10-t 13, and E1> E2> 0.

Optionally, the alternating voltage signal is a square wave voltage signal, and the duty ratio is 50%.

Embodiments of the present application further provide a display device, including the electrophoretic display panel as described above.

Optionally, when the driving device includes an (N +1) th driving circuit and an (N +2) th driving circuit, the display device further includes a detecting device and a processor; the detection device is used for detecting whether a display picture of the edge area is abnormal or not and sending a detection result to the processor; the processor drives the first charged particles between the first electrode layer and the second electrode layer of the edge region using an (N +1) th drive circuit or an (N +2) th drive circuit according to the detection result.

The embodiment of the present application further provides a driving method of an electrophoretic display panel, where the electrophoretic display panel includes a first electrode layer, a second electrode layer, and charged particles distributed between the first electrode layer and the second electrode layer, the first electrode layer includes a display region and an edge region surrounding the display region, and the method includes: driving the charged particles between the first electrode layer and the second electrode layer of the display region by a first drive waveform; the charged particles between the first electrode layer and the second electrode layer of the edge region are driven by a second drive waveform.

Optionally, the driving device includes an (N +1) th driving circuit and an (N +2) th driving circuit, the display device further includes a detecting device and a processor, and the driving the charged particles between the first electrode layer and the second electrode layer of the edge region by the second driving waveform includes: the detection device detects whether a display picture of the edge area is abnormal or not and sends a detection result to the processor; the processor drives the first charged particles between the first electrode layer and the second electrode layer of the edge region using an (N +1) th drive circuit or an (N +2) th drive circuit according to the detection result.

The electrophoretic display panel and the driving method thereof, and the display device provided by the embodiment of the application, through using the first driving waveform to drive the charged particles between the first electrode layer and the second electrode layer of the display area, use the second driving waveform to drive the charged particles between the first electrode layer and the second electrode layer of the fringe area, the driving waveform of the charged particles of the fringe area is independent from the driving waveform of the charged particles of the display area, the driving waveform of the charged particles of the fringe area is no longer dependent on the driving waveform of the charged particles of the display area which is debugged, thereby the driving waveform of the charged particles of the fringe area can be independently controlled and independently burned, and the display effect of the fringe area is more flexible and controllable.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.

Drawings

The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.

Fig. 1 is a schematic structural diagram of an electrophoretic display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an electrophoretic display panel according to an embodiment of the disclosure;

fig. 3 is a schematic diagram of driving waveforms of driving circuits according to a first embodiment of the present application;

fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the present application;

fig. 5 is a flowchart illustrating a driving method of an electrophoretic display panel according to a third embodiment of the present application.

Description of reference numerals:

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Unless otherwise defined, technical or scientific terms used throughout the disclosure of the embodiments of the present application shall have the ordinary meaning as understood by those having ordinary skill in the art to which the present application belongs. The use of "first," "second," and similar terms in the embodiments of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that a particular element or item appears in front of the word or is detected by mistake, and that the word or item appears after the word or item and its equivalents, but does not exclude other elements or misdetections.

The embodiment of the application provides an electrophoretic display panel, a driving method thereof and a display device, so as to overcome the defects that the driving waveform of the edge area of the conventional electrophoretic display panel tends to be complex, the display effect is not easy to control and the like.

Example one

Fig. 1 is a schematic structural diagram of an electrophoretic display panel according to a first embodiment of the present disclosure, and as shown in fig. 1, the electrophoretic display panel according to the present embodiment includes: afirst electrode layer 10, asecond electrode layer 20 andcharged particles 30 distributed between thefirst electrode layer 10 and thesecond electrode layer 20, thefirst electrode layer 10 comprising adisplay area 11 and anedge area 12 surrounding thedisplay area 11.

The electrophoretic display panel further comprises a driving means 40, the driving means 40 being connected to thefirst electrode layer 10 for driving thecharged particles 30 between thefirst electrode layer 10 and thesecond electrode layer 20 of thedisplay area 11 by a first driving waveform and driving thecharged particles 30 between thefirst electrode layer 10 and thesecond electrode layer 20 of theedge area 12 by a second driving waveform.

When the electrophoretic display panel in the related art debugs the driving waveforms, the display effect of the display area and the edge area need to be considered, so that the overall difficulty when the driving waveforms are debugged is high, and the image quality improvement effect is very limited. This application is independent from the drive waveform of the charged particle of display area through the drive waveform with the charged particle of fringe field, and the drive waveform of the charged particle of fringe field no longer depends on the drive waveform of the charged particle of display area that has debugged, can carry out independent control to the drive waveform of the charged particle of fringe field, and independent burning record, and then eliminate the not good scheduling problem of picture quality of fringe field for the display effect of fringe field is nimble controllable more.

In this embodiment, thefirst electrode layer 10 may be a pixel electrode layer, thesecond electrode layer 20 may be a common electrode layer having a voltage of 0V, and thecommon electrode layer 20 may be a transparent electrode for display. By applying different voltages to different positions of thefirst electrode layer 10, the electrophoretic display panel can display patterns or characters on the whole.

In the present embodiment, thecharged particles 30 may have a microcapsule structure or a microcup structure. Taking the microcapsule structure as an example, the microcapsule is wrapped with transparent electrophoretic fluid and charged particles of different colors, and the driving voltages of the charged particles of different colors are different. The charged particles move in the microcapsules to perform display by driving a driving voltage applied between thefirst electrode layer 10 and thesecond electrode layer 20.

In this embodiment, thecharged particles 30 include first to nth charged particles, N is a natural number greater than or equal to 2, and thedriving device 40 includes first to nth driving circuits corresponding to the first to nth charged particles one to one, respectively, wherein: the ith driving circuit is used for driving ith charged particles between a first electrode layer and a second electrode layer of the display area, wherein i is a natural number between 1 and N; the ith driving waveform output by the ith driving circuit comprises an ith balance stage, an ith jitter stage and an ith display stage, wherein the ith balance stage applies an ith direct current voltage to the first electrode layer of the display area, the ith display stage applies an ith data voltage to the first electrode layer of the display area, the total charge number of the applied ith direct current voltage and the ith data voltage is zero, and the ith jitter stage applies an alternating current voltage to the first electrode layer of the display area.

Generally, if the time for applying a positive voltage to the charged particles cannot be equal to the time for applying a negative voltage, the charged particles are subjected to more force in one direction. If such a situation continues for a long time, the charged particles may be damaged, affecting the display effect. In this embodiment, the ith dc voltage is applied to the first electrode layer of the display region in the ith balance stage, and the total charge number between the applied ith dc voltage and the ith data voltage is zero (since the total charge number of the positive and negative voltages is always zero in the ith dither stage, it is not necessary to consider balancing this stage), which can be avoided.

This embodiment causes the charged particles to oscillate, i.e. to generate a small amplitude back and forth motion, near the respective positions by applying an alternating voltage signal of varying amplitude to the first electrode layer of the display area at the ith shaking stage. This can improve the motion activity of the charged particles. After the electrophoretic display panel displays static content for a long time, the charged particles are in the same position for a long time. At this time, the charged particles may be hindered by the surrounding environment (e.g., liquid surrounding the charged particles) and may not move sensitively in response to the data voltage. Such a hindrance can be overcome well after the charged particles are oscillated.

In this embodiment, the alternating voltage signal applied to the first electrode layer of the display area in the ith dithering stage may be a square wave voltage signal, and the duty ratio is 50%.

In this embodiment, the frequency of the alternating voltage signal applied to the first electrode layer of the display region in the ith dithering stage may be 24Hz or higher, so that the human eye cannot perceive the change of the image. This can prevent the occurrence of a flicker phenomenon when switching display contents. Further, the frequency may be 30Hz or more to obtain a better effect of preventing flicker.

In this embodiment, the duration of the alternating voltage signal applied to the first electrode layer of the display region in the ith dithering stage may be less than or equal to the duration of the ith display stage, so as to reduce power consumption and shorten driving time.

In this embodiment, the number of periods of the alternating voltage signal applied to the first electrode layer of the display region in the ith dithering stage may be arbitrarily set. Generally, the greater the number of cycles, the better the effect of the oscillation. In the case of 4 cycles shown in fig. 3, 2 or a little more cycles can give a good oscillation effect and low power consumption can be maintained.

In the present embodiment, by setting the ith display stage after the ith dithering stage and applying the ith data voltage signal to the pixel electrode layer, the charged particles can correctly respond to the ith data voltage signal and display new content. Since the motion activity of the charged particles is increased in the ith dithering stage, the possible obstruction of the charged particles can be reduced, and the situation that the charged particles cannot move to a predetermined display position is avoided. The problem of inaccurate display content is thus avoided.

In this embodiment, N may be 2 or 3. For example, when N is 2, the charged particles may include black charged particles and white charged particles. For example, when N is 3, the charged particles may include black charged particles, white charged particles, and red charged particles, or may include black charged particles, white charged particles, and yellow charged particles, and the like. In the following, the case where N is 3 and the charged particles include charged particles of three colors of black, white and red will be described as an example, and it should be noted that the embodiment of the present invention is also applicable to the case where N is another numerical value and the color of the charged particles is another color.

In this embodiment, it is assumed that the first chargedparticles 31 are white charged particles, the second chargedparticles 32 are black charged particles, the third chargedparticles 33 are red charged particles, the driving circuit corresponding to the white charged particles is a first driving circuit, the driving circuit corresponding to the black charged particles is a second driving circuit, and the driving circuit corresponding to the red charged particles is a third driving circuit. The first to third driving waveforms output by the first to third driving circuits are shown in fig. 3.

The first data voltage applied to the first electrode layer of the display region by the first driving circuit in the first display phase is a direct current voltage with a magnitude of-E1V and a duration between t11 and t12, the duration of the first display phase is between t10 and t13, and t10< t11< t12< t 13.

The second data voltage applied to the first electrode layer of the display region by the second driving circuit in the second display phase is a direct current voltage with a magnitude of + E2V and a duration between t21 and t22, the duration of the second display phase is between t20 and t23, and t20< t21< t22< t 23.

The third data voltage applied to the first electrode layer of the display region by the third driving circuit in the third display stage includes: (1) a dc voltage of magnitude-E31 volts for a duration between t31 and t32, (2) a dc voltage of magnitude + E32 volts for a duration between t32 and t33, (1) a dc voltage of magnitude-E33 volts for a duration between t34 and t35, (2) a dc voltage of magnitude + E34 volts for a duration between t35 and t36, and a duration between t30 and t36 for the third display phase, t30< t31< t32< t33< t34< t35< t 36.

Alternatively, E1 ═ E2 ═ E31 ═ E33 ═ 15V, and 4V < E32 ═ E34< 10V.

Since the first driving circuit applies-E1 v dc voltage with duration time between t11 and t12 to the first electrode layer of the display region in the first display stage, there is a period of inactivity from t12 to t13, at this time, the pixel electrode layer of the edge region is easily affected by the data voltage of other regions, an induced voltage is generated, a voltage difference is formed between the induced voltage and the voltage of the common electrode layer, and the red charged particles are relatively active, so that the electrophoretic display panel in the related art is easily subjected to the problem of red edge display image in this stage, which seriously affects the image display effect of the electronic paper and reduces the user experience.

In this embodiment, the driving apparatus further includes an (N +1) th driving circuit, and the (N +1) th driving circuit is configured to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region.

The (N +1) th driving waveform output by the (N +1) th driving circuit comprises an (N +1) th balance stage and an (N +1) th display stage, wherein the (N +1) th balance stage applies an (N +1) th direct current voltage to the first electrode layer of the edge region, the (N +1) th display stage applies an (N +1) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +1) th direct current voltage and the applied (N +1) th data voltage is zero; the (N +1) th data voltage is applied as-E1 VDC voltage having a duration between t14 and t13, the duration of the (N +1) th display phase is t 10-t 13, t10< t11< t12< t14< t 13.

The (N +1) th driving waveform output by the (N +1) th driving circuit in the embodiment omits a shaking stage, so that the driving waveform of an edge area is simplified, the power consumption of equipment is saved, and the (N +1) th data voltage is applied at the end of a display stage, so that the problem that the edge of a display image of an electrophoretic display panel in the related art is easily reddened at the stage is solved, the image display effect of the electronic paper is improved, and the use experience of a user is improved.

In the present embodiment, the time difference between t14 and t13 is equal to the time of the minimum number of frames driven by a black picture to a white picture.

In this embodiment, the driving apparatus further includes an (N +2) th driving circuit, and the (N +2) th driving circuit is configured to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region.

The (N +2) th driving waveform output by the (N +2) th driving circuit comprises an (N +2) th balance stage and an (N +2) th display stage, wherein the (N +2) th balance stage applies an (N +2) th direct current voltage to the first electrode layer of the edge region, the (N +2) th display stage applies an (N +2) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +2) th direct current voltage and the applied (N +2) th data voltage is zero; the (N +2) th data voltage applied includes: the voltage of-E1 with the duration between t11 and t12 and the voltage of-E4 with the duration between t12 and t13, the maintaining time of the (N +2) th display stage is t 10-t 13, and E1> E4> 0.

In the embodiment, the (N +2) th driving waveform output by the (N +2) th driving circuit omits a shaking stage, so that the power consumption of the device is saved, and after the driving waveform of the white charged particles is output in the display stage, a lower voltage is maintained until the display stage is finished, so that the problem that the edge of a displayed image is easily reddened in the display stage of an electrophoretic display panel in the related art is solved, the image display effect of the electronic paper is improved, and the use experience of a user is improved.

In this embodiment, the (N +1) th driving waveform is simpler than the (N +2) th driving waveform, the power consumption of the device is lower, the (N +2) th driving waveform is more general, and the effect of processing the abnormal condition of the edge is better. Since the red charged particles are less active at normal or low temperatures and more active at high temperatures, it is conceivable that the (N +1) th driving circuit is used to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region at normal or low temperatures and the (N +2) th driving circuit is used to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region at high temperatures.

Example two

Based on the inventive concept of the foregoing embodiment, an embodiment of the present application further provides a display device, including the electrophoretic display panel described in the first embodiment.

The display device of the embodiment of the application can be as follows: handheld devices such as e-readers, tablets, etc. are powered by batteries. Since the display device of this embodiment uses different driving waveforms to drive the charged particles between the first electrode layer and the second electrode layer in the display area and the charged particles between the first electrode layer and the second electrode layer in the edge area, the display effect of the edge area of the display panel is more flexible and controllable.

In this embodiment, the charged particles may include first to nth charged particles, N is a natural number greater than or equal to 2, and the driving device includes first to nth driving circuits corresponding to the first to nth charged particles one to one, respectively, wherein: the ith driving circuit is used for driving ith charged particles between a first electrode layer and a second electrode layer of the display area, and i is a natural number between 1 and N.

The ith driving waveform output by the ith driving circuit comprises an ith balance stage, an ith jitter stage and an ith display stage, wherein the ith balance stage applies an ith direct current voltage to the first electrode layer of the display area, the ith display stage applies an ith data voltage to the first electrode layer of the display area, the total charge number of the applied ith direct current voltage and the ith data voltage is zero, and the ith jitter stage applies an alternating current voltage to the first electrode layer of the display area.

In this embodiment, the data voltage applied to the first electrode layer of the display region by the first driving circuit corresponding to the first charged particles in the first display phase is-E1 v dc voltage with duration between t11 and t12, the duration of the first display phase is between t10 and t13, and t10< t11< t12< t 13.

In this embodiment, the driving apparatus may further include an (N +1) th driving circuit for driving the first charged particles between the first electrode layer and the second electrode layer of the edge region; the (N +1) th driving waveform output by the (N +1) th driving circuit comprises an (N +1) th balance stage and an (N +1) th display stage, wherein the (N +1) th balance stage applies an (N +1) th direct current voltage to the first electrode layer of the edge region, the (N +1) th display stage applies an (N +1) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +1) th direct current voltage and the applied (N +1) th data voltage is zero; the (N +1) th data voltage is applied as-E1 VDC voltage having a duration between t14 and t13, the duration of the (N +1) th display phase is t 10-t 13, t10< t11< t12< t14< t 13.

In this embodiment, the driving apparatus may further include an (N +2) th driving circuit, the (N +2) th driving circuit being configured to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region; the (N +2) th driving waveform output by the (N +2) th driving circuit includes an (N +2) th balancing stage and an (N +2) th display stage, the (N +2) th balancing stage applies an (N +2) th direct current voltage to the first electrode layer of the edge region, the (N +2) th display stage applies an (N +2) th data voltage to the first electrode layer of the edge region, and the total charge number of the applied (N +2) th direct current voltage and the (N +2) th data voltage is zero; the (N +2) th data voltage applied includes: the voltage of-E1 with the duration between t11 and t12 and the voltage of-E2 with the duration between t12 and t13, the maintaining time of the (N +2) th display stage is t 10-t 13, and E1> E2> 0.

In this embodiment, the (N +1) th driving waveform is simpler than the (N +2) th driving waveform, the power consumption of the device is lower, the (N +2) th driving waveform is more general, and the effect of processing the abnormal condition of the edge is better. Since the red charged particles are less active at normal or low temperatures and more active at high temperatures, it is conceivable that the (N +1) th driving circuit is used to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region at normal or low temperatures and the (N +2) th driving circuit is used to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region at high temperatures.

In this embodiment, as shown in fig. 4, the display device may further include adetection device 50 and aprocessor 60, where thedetection device 50 is configured to detect whether a display screen of the edge area is abnormal, and send a detection result to theprocessor 60; theprocessor 60 drives the first charged particles between the first electrode layer and the second electrode layer of the edge region using the (N +1) th drive circuit or the (N +2) th drive circuit according to the detection result.

In this embodiment, whether the display screen of the edge region is abnormal is detected by thedetection device 50, and if the display screen of the edge region is detected to be abnormal (for example, the phenomenon of edge blushing occurs), the (N +2) th driving circuit is used to drive the first charged particles between the first electrode layer and the second electrode layer of the edge region; and if the display picture of the edge area is detected to have no abnormity, driving the first charged particles between the first electrode layer and the second electrode layer of the edge area by using an (N +1) th driving circuit.

In this embodiment, the detectingdevice 50 may be an optical detecting instrument or any other type of detecting instrument for detecting the panel defect based on the optical principle, which is not limited in this application.

In this embodiment, the first driver circuit, the second driver circuit, the third driver circuit, the (N +1) th driver circuit, and the (N +2) th driver circuit may use any special or general circuit configuration, and may include software, hardware, or a combination thereof.

In this embodiment, the driving apparatus may include a data memory, and the data memory stores driving waveform data corresponding to the first driving circuit, the second driving circuit, the third driving circuit, the (N +1) th driving circuit, and the (N +2) th driving circuit. These data can be transmitted to the same voltage generation circuit to generate and apply different drive waveforms to thefirst electrode layer 10.

EXAMPLE III

Fig. 5 is a schematic flowchart of a driving method of an electrophoretic display panel according to the present application, where the electrophoretic display panel includes a first electrode layer, a second electrode layer, and charged particles distributed between the first electrode layer and the second electrode layer, the first electrode layer includes a display region and an edge region surrounding the display region, as shown in fig. 5, the driving method includes:

step S1: the charged particles between the first electrode layer and the second electrode layer of the display area are driven by a first drive waveform.

Step S2: the charged particles between the first electrode layer and the second electrode layer of the edge region are driven by a second drive waveform.

In this embodiment, the driving device includes an (N +1) th driving circuit and an (N +2) th driving circuit, the display device further includes a detecting device and a processor, and drives the charged particles between the first electrode layer and the second electrode layer of the edge region by a second driving waveform, including:

the detection device detects whether the display picture of the edge area is abnormal or not and sends the detection result to the processor.

The processor drives the first charged particles between the first electrode layer and the second electrode layer of the edge region using an (N +1) th drive circuit or an (N +2) th drive circuit according to the detection result.

In this embodiment, the (N +1) th driving waveform output by the (N +1) th driving circuit and the (N +2) th driving waveform output by the (N +2) th driving circuit can refer to the description of the first embodiment, and are not repeated herein.

In the description of the embodiments of the present application, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present application.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims (10)

Translated fromChinese

1.一种电泳显示面板，其特征在于，包括第一电极层、第二电极层以及分布在所述第一电极层和所述第二电极层之间的带电粒子，所述第一电极层包括显示区域以及包围所述显示区域的边缘区域；1. An electrophoretic display panel, comprising a first electrode layer, a second electrode layer, and charged particles distributed between the first electrode layer and the second electrode layer, the first electrode layer including a display area and an edge area surrounding the display area;所述电泳显示面板还包括驱动装置，所述驱动装置与所述第一电极层连接，用于通过第一驱动波形驱动所述显示区域的第一电极层和第二电极层之间的带电粒子，并通过第二驱动波形驱动所述边缘区域的第一电极层和第二电极层之间的带电粒子。The electrophoretic display panel further includes a driving device connected to the first electrode layer for driving charged particles between the first electrode layer and the second electrode layer in the display area through a first driving waveform , and the charged particles between the first electrode layer and the second electrode layer in the edge region are driven by the second driving waveform.2.根据权利要求1所述的电泳显示面板，其特征在于，所述带电粒子包括第一带电粒子至第N带电粒子，N为大于或等于2的自然数，所述驱动装置包括分别与所述第一带电粒子至第N带电粒子一一对应的第一驱动电路至第N驱动电路，其中：2 . The electrophoretic display panel according to claim 1 , wherein the charged particles include a first charged particle to an Nth charged particle, N is a natural number greater than or equal to 2, and the driving device comprises One-to-one correspondence between the first charged particle and the Nth charged particle from the first drive circuit to the Nth drive circuit, wherein:第i驱动电路用于驱动所述显示区域的第一电极层和第二电极层之间的第i带电粒子，i为1至N之间的自然数；The i-th driving circuit is used to drive the i-th charged particles between the first electrode layer and the second electrode layer in the display area, where i is a natural number between 1 and N;所述第i驱动电路输出的第i驱动波形包括第i平衡阶段、第i抖动阶段和第i显示阶段，所述第i平衡阶段向所述显示区域的第一电极层施加第i直流电压，所述第i显示阶段向所述显示区域的第一电极层施加第i数据电压，施加的第i直流电压与第i数据电压的总电荷数为零，所述第i抖动阶段向所述显示区域的第一电极层施加交流电压。The i-th driving waveform output by the i-th driving circuit includes the i-th balance stage, the i-th jitter stage and the i-th display stage, and the i-th balance stage applies the i-th DC voltage to the first electrode layer of the display area, The i-th display stage applies the i-th data voltage to the first electrode layer of the display area, and the total charge of the applied i-th DC voltage and the i-th data voltage is zero. An alternating voltage is applied to the first electrode layer of the region.3.根据权利要求2所述的电泳显示面板，其特征在于，第一带电粒子对应的第一驱动电路在第一显示阶段向所述显示区域的第一电极层施加的数据电压为持续时间在t11到t12之间的-E1伏直流电压，第一显示阶段的持续时间为t10到t13之间，t10<t11<t12<t13。3 . The electrophoretic display panel according to claim 2 , wherein the data voltage applied to the first electrode layer of the display area by the first driving circuit corresponding to the first charged particles in the first display stage is a duration of -E1 VDC between t11 and t12, the duration of the first display stage is between t10 and t13, t10<t11<t12<t13.4.根据权利要求3所述的电泳显示面板，其特征在于，所述驱动装置还包括第(N+1)驱动电路，第(N+1)驱动电路用于驱动所述边缘区域的第一电极层和第二电极层之间的第一带电粒子；4 . The electrophoretic display panel according to claim 3 , wherein the driving device further comprises an (N+1)th driving circuit, and the (N+1)th driving circuit is used to drive the first edge region of the edge region. 5 . first charged particles between the electrode layer and the second electrode layer;所述第(N+1)驱动电路输出的第(N+1)驱动波形包括第(N+1)平衡阶段和第(N+1)显示阶段，所述第(N+1)平衡阶段向边缘区域的第一电极层施加第(N+1)直流电压，所述第(N+1)显示阶段向边缘区域的第一电极层施加第(N+1)数据电压，施加的第(N+1)直流电压与第(N+1)数据电压的总电荷数为零；The (N+1)th driving waveform output by the (N+1)th driving circuit includes the (N+1)th balance stage and the (N+1)th display stage. The (N+1)th DC voltage is applied to the first electrode layer in the edge region, the (N+1)th data voltage is applied to the first electrode layer in the edge region during the (N+1)th display stage, and the (N+1)th data voltage is applied to the first electrode layer in the edge region. +1) The total charge of the DC voltage and the (N+1)th data voltage is zero;施加的第(N+1)数据电压为持续时间在t14到t13之间的-E1伏直流电压，第(N+1)显示阶段的持续时间为t10～t13，t10<t11<t12<t14<t13。The (N+1)th data voltage applied is -E1 volts DC voltage with a duration between t14 and t13, and the duration of the (N+1)th display stage is t10～t13, t10<t11<t12<t14< t13.5.根据权利要求3或4所述的电泳显示面板，其特征在于，所述驱动装置还包括第(N+2)驱动电路，第(N+2)驱动电路用于驱动所述边缘区域的第一电极层和第二电极层之间的第一带电粒子；5 . The electrophoretic display panel according to claim 3 , wherein the driving device further comprises an (N+2)th driving circuit, and the (N+2)th driving circuit is used to drive the edge region. 6 . first charged particles between the first electrode layer and the second electrode layer;所述第(N+2)驱动电路输出的第(N+2)驱动波形包括第(N+2)平衡阶段和第(N+2)显示阶段，所述第(N+2)平衡阶段向边缘区域的第一电极层施加第(N+2)直流电压，所述第(N+2)显示阶段向边缘区域的第一电极层施加第(N+2)数据电压，施加的第(N+2)直流电压与第(N+2)数据电压的总电荷数为零；The (N+2)th driving waveform output by the (N+2)th driving circuit includes the (N+2)th balance stage and the (N+2)th display stage. The (N+2)th DC voltage is applied to the first electrode layer in the edge region, the (N+2)th data voltage is applied to the first electrode layer in the edge region during the (N+2)th display stage, and the (N+2)th data voltage is applied to the first electrode layer in the edge region. +2) The total charge of the DC voltage and the (N+2)th data voltage is zero;施加的第(N+2)数据电压包括：持续时间在t11到t12之间的-E1电压以及持续时间在t12到t13之间的-E2电压，第(N+2)显示阶段的维持时间为t10～t13，E1>E2>0。The applied (N+2)th data voltage includes: the -E1 voltage with a duration between t11 and t12 and the -E2 voltage with a duration between t12 and t13, and the maintenance time of the (N+2)th display stage is t10～t13, E1>E2>0.6.根据权利要求2所述的电泳显示面板，其特征在于，所述交流电压信号为方波电压信号，占空比为50％。6 . The electrophoretic display panel according to claim 2 , wherein the AC voltage signal is a square wave voltage signal, and the duty cycle is 50%. 7 .7.一种显示装置，其特征在于，包括如权利要求1至6任一所述的电泳显示面板。7. A display device, comprising the electrophoretic display panel according to any one of claims 1 to 6.8.根据权利要求7所述的显示装置，其特征在于，当所述驱动装置包括第(N+1)驱动电路和第(N+2)驱动电路时，所述显示装置还包括检测装置和处理器；8 . The display device according to claim 7 , wherein when the driving device comprises a (N+1)th driving circuit and an (N+2)th driving circuit, the display device further comprises a detection device and a processor;所述检测装置用于检测边缘区域的显示画面是否异常，并将检测结果发送至处理器；The detection device is used to detect whether the display screen of the edge area is abnormal, and send the detection result to the processor;所述处理器根据所述检测结果，使用第(N+1)驱动电路或第(N+2)驱动电路驱动所述边缘区域的第一电极层和第二电极层之间的第一带电粒子。The processor uses the (N+1)th driving circuit or the (N+2)th driving circuit to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region according to the detection result .9.一种电泳显示面板的驱动方法，其特征在于，所述电泳显示面板包括第一电极层、第二电极层以及分布在所述第一电极层和所述第二电极层之间的带电粒子，所述第一电极层包括显示区域以及包围所述显示区域的边缘区域，所述方法包括：9 . A driving method for an electrophoretic display panel, wherein the electrophoretic display panel comprises a first electrode layer, a second electrode layer, and charged electrodes distributed between the first electrode layer and the second electrode layer. 10 . particles, the first electrode layer includes a display area and an edge area surrounding the display area, and the method includes:通过第一驱动波形驱动所述显示区域的第一电极层和第二电极层之间的带电粒子；Drive charged particles between the first electrode layer and the second electrode layer in the display area by a first driving waveform;通过第二驱动波形驱动所述边缘区域的第一电极层和第二电极层之间的带电粒子。The charged particles between the first electrode layer and the second electrode layer of the edge region are driven by a second driving waveform.10.根据权利要求9所述的电泳显示面板的驱动方法，其特征在于，所述驱动装置包括第(N+1)驱动电路和第(N+2)驱动电路，所述显示装置还包括检测装置和处理器，所述通过第二驱动波形驱动所述边缘区域的第一电极层和第二电极层之间的带电粒子，包括：10 . The driving method of an electrophoretic display panel according to claim 9 , wherein the driving device comprises a (N+1)th driving circuit and an (N+2)th driving circuit, and the display device further comprises a detection The device and the processor, wherein the charged particles between the first electrode layer and the second electrode layer in the edge region are driven by the second driving waveform, comprising:所述检测装置检测边缘区域的显示画面是否异常，并将检测结果发送至处理器；The detection device detects whether the display screen of the edge area is abnormal, and sends the detection result to the processor;所述处理器根据所述检测结果，使用第(N+1)驱动电路或第(N+2)驱动电路驱动所述边缘区域的第一电极层和第二电极层之间的第一带电粒子。The processor uses the (N+1)th driving circuit or the (N+2)th driving circuit to drive the first charged particles between the first electrode layer and the second electrode layer in the edge region according to the detection result .

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