CN106842758B - A kind of electronic paper display panel and its driving method - Google Patents
A kind of electronic paper display panel and its driving method Download PDFInfo
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- CN106842758B CN106842758B CN201710282461.6A CN201710282461A CN106842758B CN 106842758 B CN106842758 B CN 106842758B CN 201710282461 A CN201710282461 A CN 201710282461A CN 106842758 B CN106842758 B CN 106842758B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Molecular Biology (AREA)
- Computer Hardware Design (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention discloses a kind of electronic paper display panel and its driving methods, the display area of the display panel is divided into multiple pixel units, the pixel unit includes at least the first pixel region and the second pixel region, in the pixel unit, first sub-electrode is corresponding with first pixel region, and the second sub electrode is corresponding with second pixel region；First pixel region is at least used to form black, white or grey, second pixel region is at least used to form colour, so that first pixel region and the second pixel region can show same color, different colours can also be combined into, so that electronic paper display panel provided by the embodiment of the present invention, not only may be implemented black, white, black and white grayscale, moreover it is possible to show the colour of various colored pure colors and different grayscale, display color is more, and display effect is more diversified.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of electronic paper display panels and its driving method.
Background technique
With the development of display technology, electronic paper technology is with its unique super low-power consumption, the reduction advantages such as paper visual sense,
In E-book reading device using more and more common.Specifically, electronic paper technology is made in electrophoresis by controlling electric field
Color ion is mobile according to the size and Orientation for applying electric field, when applying electric field, maintains position constant.And electronic paper display fills
Set is to be moved to predeterminated position by the color ion in control electric field controls electrophoresis, and carry out instead under the irradiation of ambient
It penetrates, completes display.
But existing display device of electronic paper is only able to display white, black and black and white gray scale color, is difficult to realize display
The diversification of color, display effect are more single.
Summary of the invention
In order to solve the above technical problems, the embodiment of the invention provides a kind of electronic paper display panel, to realize display face
Display effect is enriched in the diversification of color.
To solve the above problems, the embodiment of the invention provides following technical solutions:
A kind of electronic paper display panel, comprising:
The first substrate and the second substrate being oppositely arranged；
Electrophoresis layer between the first substrate and the second substrate, the electrophoresis layer include black particles, leucoplastid
Electrically different, the threshold voltage of the black particles of son and the first colour particles, the black particles and the white particles
Greater than the threshold voltage of first colour particles, the threshold voltage of the white particles is greater than the threshold of first colour particles
Threshold voltage；
Positioned at the first substrate towards the first electrode layer of the electrophoresis layer side, the first electrode layer includes each other
Independent first sub-electrode and second sub electrode；
Positioned at the second substrate towards the second electrode lay of the electrophoresis layer side；
Wherein, the display area of the display panel is divided into multiple pixel units, and the pixel unit includes at least the
One pixel region and the second pixel region, in the pixel unit, first sub-electrode and first pixel region pair
It answers, the second sub electrode is corresponding with second pixel region；First pixel region is at least used to form black, white
Or grey, second pixel region are at least used to form colour.
A kind of driving method of electronic paper display panel, is applied to above-mentioned electronic paper display panel, which includes:
The stage is shown in different grayscale colours, in first time period, gives first sub-electrode and the second sub electrode
First driving signal is provided,
In second time period, provide the second driving signal to first sub-electrode, wherein first driving signal and
The electrically difference of second driving signal, and the absolute value of first driving signal is greater than the exhausted of second driving signal
To value；
Wherein, in the display panel black particles threshold voltage be greater than first colour particles threshold voltage,
The threshold voltage of the white particles be greater than first colour particles threshold voltage, the electrical property of the black particles with it is described
The electrical property of white particles is opposite.
Compared with prior art, above-mentioned technical proposal has the advantage that
Electronic paper display panel and its driving method provided by the embodiment of the present invention, by the way that each pixel unit to be divided into
At least two pixel region of first pixel region and the second pixel region, in the first pixel region and the second pixel region
First sub-electrode and second sub electrode control respectively, so that first pixel region and the second pixel region can be shown
Same color can also be combined into different colours, so that electronic paper display panel provided by the embodiment of the present invention, not only
Black, white, black and white grayscale may be implemented, moreover it is possible to show the colour of various colored pure colors and different grayscale, display color is more,
Display effect is more diversified.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of electronic paper display panel provided by one embodiment of the invention；
Fig. 2 (a) is when the display panel on first sub-electrode and the second electrode lay for applying when being displayed in white
V diagram；Fig. 2 (b) is when the display panel is used to be displayed in white, in the second sub electrode and the second electrode lay
Apply V diagram；
Fig. 3 is the distribution schematic diagram of each particle in the electrophoresis layer when the display panel is used to be displayed in white；
Fig. 4 (a) is when the display panel on first sub-electrode and the second electrode lay for applying when showing black
V diagram；Fig. 4 (b) is when the display panel is used to show black, in the second sub electrode and the second electrode lay
Apply V diagram；
Fig. 5 and Fig. 6 is when the display panel is for when showing black, the distribution of each particle to be illustrated in the electrophoresis layer
Figure；
Fig. 7 (a) is when the display panel is for showing the first colour, on first sub-electrode and the second electrode lay
Apply V diagram；Fig. 7 (b) is the second sub electrode and second when the display panel is for showing the first colour
Apply V diagram on electrode layer；
Fig. 8 is the distribution schematic diagram of each particle in the electrophoresis layer when the display panel is for showing the first colour；
Fig. 9 (a) is when the display panel is for showing the first colour, on first sub-electrode and the second electrode lay
Apply V diagram；Fig. 9 (b) is the second sub electrode and second when the display panel is for showing the first colour
Apply V diagram on electrode layer；
Figure 10 is the distribution signal of each particle in the electrophoresis layer when the display panel is for showing the first colour
Figure；
Figure 11 is structure when electronic paper display panel provided by the embodiment of the present invention shows different the first colours of grayscale
Schematic diagram；
Figure 12 is the flow chart of electronic paper display panel driving method provided by one embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
The embodiment of the present invention provides a kind of display device of electronic paper, as shown in Figure 1, the display device of electronic paper includes: phase
To the first substrate 10 and the second substrate 20 of setting；Electrophoresis layer between the first substrate 10 and the second substrate 20
30, the electrophoresis layer 30 includes black particles, white particles and the first colour particles, and the threshold voltage of the black particles is greater than
The threshold voltage of first colour particles, the threshold voltage of the white particles are greater than the threshold value electricity of the first betrothal gifts particle
Pressure；
Positioned at the first substrate 10 towards the first electrode layer 40 of 30 side of electrophoresis layer, the first electrode layer 40
Including the first sub-electrode 41 independent of each other and second sub electrode 42；
Positioned at the second substrate 20 towards the second electrode lay 50 of 30 side of electrophoresis layer；
Wherein, the viewing area of the display panel is divided into multiple pixel units 60, and the pixel unit 60 includes at least
First pixel region 61 and the second pixel region 62, in the pixel unit 60, first sub-electrode 41 and described first
Pixel region 61 is corresponding, and the second sub electrode 42 is corresponding with second pixel region 62；First pixel region 61 to
It is used to form black, white or grey less, second pixel region 62 is at least used to form colour.
It should be noted that in embodiments of the present invention, first sub-electrode 41 and first pixel region 61 are right
Projection of first sub-electrode 41 on the first substrate 10 and first pixel region 61 should be referred to described first
Projection on substrate 10 is least partially overlapped, does not hand over projection of second pixel region 62 on the first substrate 10
It is folded；The second sub electrode 42 is corresponding with second pixel region 62 to refer to the second sub electrode 42 in the first substrate
Projection and projection of second pixel region 62 on the first substrate 10 on 10 is at least partly overlapping, with described first
Projection of the pixel region 61 on the first substrate 10 does not overlap；Optionally, in embodiments of the present invention, the first son electricity
Throwing of first pixel region 61 on the first substrate 10 is completely covered in projection of the pole 41 on the first substrate 10
Shadow；Projection of the second sub electrode 42 on the first substrate 10 covers second pixel region 62 in first base
Projection on plate 10.
Wherein, the threshold voltage refers to that it corresponds to the moveable minimum of particle and applies alive absolute value, is positive value, no
With positive negativity.It is alive exhausted that the threshold voltage of such as black particles refers to that the minimum that black particles can be made mobile is applied
To value, the threshold voltage of the white particles refers to that the minimum that white particles can be made mobile applies alive absolute value, institute
The threshold voltage for stating the first colour particles refers to that the minimum that the first colour particles can be made mobile applies alive absolute value.
It should be noted that in embodiments of the present invention, the threshold voltage of the black particles and the white particles
Threshold voltage can be equal, can not also wait, and the present invention to this and without limitation, specifically depends on the circumstances.
When specific works, the display panel is by controlling in first sub-electrode 41 and the second sub electrode 42
Voltage controls the display color of the display panel.Such as when the display panel is for need to only pass through control institute when showing black
The voltage in the first sub-electrode 41 and second sub electrode 42 is stated, first pixel region 61 and the second pixel region 62 is corresponding
The white particles in region and the first colour particles are moved to 10 side of first substrate, and black particles are moved to the second substrate 20
Side；When the display panel is for need to only pass through control first sub-electrode 41 and the second son electricity when being displayed in white
Voltage on pole 42, the black particles of 62 corresponding region of first pixel region 61 and the second pixel region and first are colored
Particle is moved to 10 side of first substrate, and white particles are moved to 20 side of the second substrate；When the display panel
It, only need to be by controlling the voltage in first sub-electrode 41 and second sub electrode 42 when for showing the first colour, it will be described
The black particles and white particles of 62 corresponding region of first pixel region 61 and the second pixel region are moved to the first substrate
10 sides, the first colour particles are moved to 20 side of the second substrate；When the display panel is for showing different grayscale
When the first colour, it need to only pass through the voltage on the first sub-electrode 41 of control, control white particles, the black of the first pixel region 61
Particle and the first colour particles are mobile, realize black and white grayscale, while controlling the voltage in second sub electrode 42, control the second pixel
62 white particles of region, black particles and the first colour particles are mobile, realize the first colour.
It can be seen that electronic paper display panel provided by the embodiment of the present invention, black, white, black not only may be implemented
Lime rank, moreover it is possible to show that first colored and different grayscale first is colored, display color is more, and display effect is more diversified.
On the basis of the above embodiments, in one embodiment of the invention, first colour particles and described black
The electrical property of colored particle is identical.In another embodiment of the present invention, the electricity of first colour particles and the white particles
Property is identical, and the present invention to this and without limitation, specifically depends on the circumstances.
Below by taking first colour particles are identical with the electrical property of the black particles as an example, the embodiment of the present invention is mentioned
The electronic paper display panel of confession is illustrated.Using the black ion and the first colour particles as positivity particle, white particles are
For negativity particle.But the present invention is to this and without limitation, in other embodiments of the invention, black particles and described
First colour particles may be negativity particle, and the white particles are positivity particle, specifically depend on the circumstances.
Specifically, in embodiments of the present invention, as shown in Figures 2 and 3, wherein Fig. 2 (a) is when the display panel is used
When being displayed in white, apply V diagram on first sub-electrode 41 and the second electrode lay 50；Fig. 2 (b) is when described aobvious
Show panel for applying V diagram on the second sub electrode 41 and the second electrode lay 50, Fig. 3 is works as when being displayed in white
Display panel is stated for when being displayed in white, the distribution schematic diagram of each particle in the electrophoresis layer.Specifically, working as the display panel
When for being displayed in white, apply first voltage V1, the second electrode lay 50 on first sub-electrode 41 and second sub electrode 42
Upper application common voltage Vcom, the absolute difference that the first voltage subtracts the common voltage are greater than the white particles
Threshold voltage, and the first voltage is less than the common voltage, optionally, the common voltage is zero, the first voltage
For negative voltage, thus under the action of the first voltage and the common voltage, so that white particles are moved to the second substrate
20 sides, the black ion and first colour particles are moved to 10 side of first substrate, realize white displays.
As shown in Figure 4-Figure 6, wherein Fig. 4 (a) is when the display panel is for when showing black, first son to be electric
Apply V diagram on pole 41 and the second electrode lay 50；Fig. 4 (b) be when the display panel for show black when, it is described
Apply V diagram in second sub electrode 41 and the second electrode lay 50, Fig. 5 and Fig. 6 are black for showing when the display panel
When color, the distribution schematic diagram of each particle in the electrophoresis layer.
Specifically, when the display panel is used to show black, as shown in figure 4, first in 41 He of the first sub-electrode
Apply second voltage in second sub electrode 42, apply common voltage on the second electrode lay 50, the second voltage with it is described public
The absolute value of the difference of voltage is greater than the threshold voltage of the black particles, and the second voltage is greater than the common voltage,
Thus under the action of the second voltage and the common voltage, so that white particles are moved to 10 side of first substrate, institute
It states black ion and first colour particles is moved to 20 side of the second substrate, as shown in Figure 5；Continue as shown in figure 4,
Apply tertiary voltage, the tertiary voltage and the common voltage on first sub-electrode 41 and second sub electrode 42 again
Difference is less than zero, and the absolute value of the difference of the tertiary voltage and the common voltage is less than the threshold voltage of black particles,
And it is greater than the threshold voltage of the first colour particles, so that the first colour particles are also moved to 10 side of first substrate, only black
Particle is located at 20 side of the second substrate, as shown in fig. 6, realizing black display.
In one embodiment of the invention, as shown in Figure 7 and Figure 8, Fig. 7 (a) is when the display panel is for showing
When the first colour, apply V diagram on first sub-electrode 41 and the second electrode lay 50；Fig. 7 (b) is when the display
When panel is for showing the first colour, apply V diagram in the second sub electrode 41 and the second electrode lay 50, Fig. 8 is to work as
When the display panel is for showing the first colour, the distribution schematic diagram of each particle in the electrophoresis layer.
Specifically, when the display panel is for showing the first colour, as shown in Fig. 7 (a), in first sub-electrode
Apply first voltage V1 on 41, applies common voltage Vcom on the second electrode lay 50, the first voltage subtracts the common electrical
The absolute difference of pressure is greater than the threshold voltage of the white particles, and the first voltage is less than the common voltage, optional
, the common voltage is zero, and the first voltage is negative voltage, thus in the work of the first voltage and the common voltage
Under, so that the white particles of the first pixel region are moved to 20 side of the second substrate, the black ion and first coloured silk
Colored particle is moved to 10 side of first substrate, realizes white displays in the first pixel region, as shown in Figure 8；Meanwhile as schemed
Shown in 7 (b), apply the 4th voltage, the 4th voltage and the difference of the common voltage in the second sub electrode 42
Absolute value is greater than the threshold voltage of first colour particles and is less than the threshold voltage of black particles, so that the second pixel region
First colour particles be moved to 20 side of the second substrate, the black particles are still located on first substrate 10 1
The first colored display is realized in the second pixel region in side, as shown in figure 8, so that first pixel region and described
The pixel unit that second pixel region is constituted realizes the first colored display.
In another embodiment of the present invention, as shown in Figure 9 and Figure 10, Fig. 9 (a) is when the display panel is for showing
When showing the first colour, apply V diagram on first sub-electrode 41 and the second electrode lay 50；Fig. 9 (b) is when described aobvious
Show panel for show the first colour when, apply V diagram, Figure 10 on the second sub electrode 41 and the second electrode lay 50
For when the display panel for show first it is colored when, the distribution schematic diagram of each particle in the electrophoresis layer.
Specifically, as shown in figure 9, in each second sub electrode 42 of first sub-electrode 41 apply the 4th voltage, it is described
The absolute value of the difference of 4th voltage and the common voltage is greater than the threshold voltage of first colour particles and is less than black
The threshold voltage of particle, so that first colour particles of the first pixel region and the second pixel region are moved to described second
20 side of substrate, the black particles are still located on 10 side of first substrate, realize the first colored display, as shown in Figure 10.
As shown in figure 11, when the display panel is used to show the first colour of different grayscale, in the first sub-electrode 41
The difference of the 5th voltage of upper application, the 5th voltage and the common voltage is greater than the white particles and the black particles
Threshold voltage so that the white particles and the black particles are to transporting among the first substrate 10 and the second substrate 20
Time that is dynamic, being applied by controlling the 5th voltage, so that the white particles and the black particles are moved to described the
At different location between one substrate 10 and the second substrate 20, the mixing of different brightness is realized, so that the first pixel region 61 is in
Existing different grayscale；Meanwhile application makes the 4th voltage in second sub electrode 42, so that the first colour particles are moved to the second substrate
20 sides, so that the first colour is presented in the second pixel region 62, so that first pixel region 61 and second picture
The first colour of different grayscale is presented in the pixel unit 60 that plain region 62 forms.
It should be noted that being moved to from first substrate 10 since the threshold voltage of first colour particles is smaller
The time of two substrate 20 (or being moved to first substrate 10 from the second substrate 20) sides is shorter, so that color by control first
Colored particle is moved to different location between first substrate 10 and the second substrate 20, so that second pixel region 62 realizes difference
The colored difficulty of the first of grayscale is larger, in other embodiments of the invention, can also certainly in the case where technique can be realized
To be moved to 20 different location of first substrate 10 and the second substrate by controlling the first colour particles, so that second pixel region
The first colored of different grayscale is realized in domain 62, and the present invention to this and without limitation, specifically depends on the circumstances.
Based on any of the above embodiments, in an alternate embodiment of the present invention where, in the pixel unit 60
Interior, the area of first sub-electrode 41 is greater than or equal to the area of the second sub electrode 42, colored to increase described first
The amplitude of accommodation of different grayscale realizes the display of more different colours.
Based on any of the above embodiments, in one embodiment of the invention, the electrophoresis layer 30 further includes M
Colour particles, the pixel unit 60 further includes M+1 pixel region, and the first electrode layer 40 further includes M+1 sub-electrode,
The M+1 sub-electrode is corresponding with the M+1 pixel region, wherein the threshold voltage of the M colour particles is less than described
The threshold voltage of black particles and the threshold voltage for being less than the white particles, M are followed successively by the positive integer for greater than 1 and being not less than N,
N is the positive integer not less than 2.
Similarly, on the basis of the above embodiments, in one embodiment of the invention, the M colour particles and institute
The electrical property for stating black particles is identical.In another embodiment of the present invention, the M colour particles and the white particles
It is electrically identical.The present invention to this and without limitation, specifically depends on the circumstances.Optionally, the M colour particles and described first
Colour particles are electrically identical.
On the basis of the above embodiments, in one embodiment of the invention, in the pixel unit 60, described
The area of one sub-electrode 41 is greater than the area of the M+1 sub-electrode, to increase the adjusting width of the colored different grayscale of the M
Degree, realizes the display of more different colours.
On the basis of the above embodiments, in a preferred embodiment of the invention, the face of the second sub electrode 42
Product is identical as the area of the M+1 sub-electrode, to realize institute by the voltage of control second sub electrode 42 and M sub-electrode
State the display for the display color that more mixed proportions are formed after first colored colored two kinds of color mixing with M+1.
Optionally, described first is colored for red, and second is colored for green, but the present invention is to this and without limitation, specifically
It depends on the circumstances.
Correspondingly, being applied to the present invention the embodiment of the invention also provides a kind of driving method of electronic paper display panel
Electronic paper display panel provided by any of the above-described embodiment, as described in Figure 12, which includes:
The stage is shown in different grayscale colours, in first time period, gives first sub-electrode and the second sub electrode
First driving signal is provided, applies common drive signal on the second electrode lay, so that first pixel region and second
The first colour particles and black particles are moved to the second substrate side in pixel region, and white particles are moved to first substrate one
Side；
In second time period, the second driving signal is provided to first sub-electrode, remains public on the second electrode lay
Driving signal altogether, wherein the electrically difference of first driving signal and second driving signal, so that the first pixel region
In the first colour particles be moved to first substrate side, black particles are from the second substrate to one sidesway of first substrate
Dynamic, white particles are mobile from first substrate from the second substrate side；
Wherein, in the display panel black particles threshold voltage be greater than first colour particles threshold voltage,
The threshold voltage of the white particles be greater than first colour particles threshold voltage, the electrical property of the black particles with it is described
The electrical property of white particles is opposite.
It should be noted that by controlling the second driving signal applied on the first sub-electrode in first pixel region
Time, can control the moving distance of white particles and black particles, realize that different grayscale is shown, then with the second pixel region
The first of domain is colored superimposed, so that the pixel unit realizes the first colored display of different grayscale.
On the basis of the above embodiments, in one embodiment of the invention, first colour particles and described black
The electrical property of colored particle is identical.In another embodiment of the present invention, the electricity of first colour particles and the white particles
Property is identical, and the present invention to this and without limitation, specifically depends on the circumstances.Below with first colour particles and the black grain
For the electrical property of son is identical, it is provided for the embodiments of the invention electronic paper display panel and is illustrated.With the black ion
It is positivity particle with the first colour particles, white particles is for negativity particles.But the present invention is to this and without limitation, in this hair
In bright other embodiments, the black particles and first colour particles may be negativity particle, the white particles
For positivity particle, specifically depend on the circumstances.
It should be noted that when the electronic paper display panel is for when showing pure color, this method to further include the driving side
Method includes:
Apply third driving signal to first sub-electrode and second sub electrode simultaneously, applies on the second electrode lay public
Driving signal, so that the corresponding particle of the pre-set color is moved to the second substrate side, the particle of other colors is moved to
One substrate side.
Specifically, when the electronic paper display panel is used to be displayed in white, this method comprises: simultaneously to first son
Electrode and second sub electrode apply third driving signal, apply common drive signal on the public electrode, so that the white
Particle is moved to the second substrate side, and the black particles and the first coloured particles are moved to first substrate side.Wherein, described
Difference between third driving signal and common voltage is greater than the threshold voltage of white particles or the threshold greater than the black particles
Threshold voltage.
When the electronic paper display panel is used to show black, this method comprises:
Apply third driving signal on first sub-electrode and second sub electrode, applies public drive on the second electrode lay
Dynamic signal, so that white particles are moved to first substrate side, the black ion and first colour particles are moved to institute
State the second substrate side；
Apply fourth drive signal on first sub-electrode and second sub electrode, public drive is maintained on the second electrode lay
Dynamic signal, so that the first colour particles are also moved to first substrate side, only black particles are located at the second substrate side, realize
Black display.
When the electronic paper display panel is for showing the first colour, this method comprises:
Apply third driving signal on first sub-electrode and second sub electrode, applies public drive on the second electrode lay
Dynamic signal, so that first colour particles are moved to the second substrate side, the black particles are still located on the first base
The first colored display is realized in plate side.
Based on any of the above embodiments, in one embodiment of the invention, the electrophoresis layer further includes M coloured silk
Colored particle, the pixel unit further include M+1 pixel region, and the first electrode layer further includes M+1 sub-electrode, and described
M+1 sub-electrode and the M+1 pixel region to it is corresponding when this method further include:
In the colored stage, in first time period, the first driving signal is provided to the M+1 sub-electrode；
In second time period, M driving signal is provided to the M+1 sub-electrode；
Wherein, the threshold voltage of the M colour particles is less than the threshold voltage of the black particles and is less than described white
The threshold voltage of colored particle, M are followed successively by the positive integer for greater than 1 and being not less than N, and N is the positive integer not less than 2.
On the basis of the above embodiments, in one embodiment of the invention, the M colour particles and the black
The electrical property of particle is identical.In another embodiment of the present invention, the electrical phase of the M colour particles and the white particles
Together.The present invention to this and without limitation, specifically depends on the circumstances.Optionally, the M colour particles and the first colored grain
It is sub electrically identical.
On the basis of the above embodiments, in one embodiment of the invention, in the pixel unit, described first
The area of sub-electrode is greater than the area of the M+1 sub-electrode, real to increase the amplitude of accommodation of the colored different grayscale of the M
The now display of more different colours.
On the basis of the above embodiments, in a preferred embodiment of the invention, the area of the second sub electrode
It is identical as the area of the M+1 sub-electrode, to realize described the by the voltage of control second sub electrode and M sub-electrode
The display for the display color that more mixed proportions are formed after one colored colored two kinds of color mixing with M+1.
Optionally, described first is colored for red, and second is colored for green, but the present invention is to this and without limitation, specifically
It depends on the circumstances.
The first colour is shown when M colour with the electronic paper display panel since the electronic paper display panel is shown
When, the driving method of the electronic paper display panel, it is no longer repeated to this by the present invention.
In conclusion electronic paper display panel and its driving method provided by the embodiment of the present invention, not only may be implemented
Black, white, black and white grayscale, moreover it is possible to show the colour of various colored pure colors and different grayscale, display color is more, display effect
It is more diversified.
Various pieces are described in a progressive manner in this specification, and what each some importance illustrated is and other parts
Difference, same and similar part may refer to each other between various pieces.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with the principles and novel features disclosed in this article
Widest scope.
Claims (11)
1. a kind of electronic paper display panel characterized by comprising
The first substrate and the second substrate being oppositely arranged；
Electrophoresis layer between the first substrate and the second substrate, the electrophoresis layer include black particles, white particles and
Electrically difference, the threshold voltage of the black particles of first colour particles, the black particles and the white particles are greater than
The threshold voltage of first colour particles, the threshold voltage of the white particles are greater than the threshold value electricity of first colour particles
Pressure, the threshold voltage refer to that it corresponds to the moveable minimum of particle and applies alive absolute value；
Positioned at the first substrate towards the first electrode layer of the electrophoresis layer side, the first electrode layer includes independent of one another
The first sub-electrode and second sub electrode；
Positioned at the second substrate towards the second electrode lay of the electrophoresis layer side；
Wherein, the display area of the display panel is divided into multiple pixel units, and the pixel unit includes at least the first picture
Plain region and the second pixel region, in the pixel unit, first sub-electrode is corresponding with first pixel region, institute
It is corresponding with second pixel region to state second sub electrode；First pixel region is at least used to form black, white or ash
Color, second pixel region are at least used to form colour.
2. display panel according to claim 1, which is characterized in that first colour particles and the black particles
It is electrically identical.
3. display panel according to claim 1, which is characterized in that first colour particles and the white particles
It is electrically identical.
4. display panel according to claim 1, which is characterized in that in the pixel unit, first sub-electrode
Area be greater than the second sub electrode area.
5. display panel according to claim 1-4, which is characterized in that the electrophoresis layer further includes M colour
Particle, the pixel unit further include M+1 pixel region, and the first electrode layer further includes M+1 sub-electrode, the M+
1 sub-electrode is corresponding with the M+1 pixel region, wherein the threshold voltage of the M colour particles is less than the black particles
Threshold voltage and be less than the threshold voltages of the white particles, M is followed successively by greater than 1 and is not less than the positive integer of N, and N is not small
In 2 positive integer.
6. display panel according to claim 5, which is characterized in that the M colour particles and the black particles
It is electrically identical.
7. display panel according to claim 5, which is characterized in that the M colour particles and the white particles
It is electrically identical.
8. display panel according to claim 5, which is characterized in that the area of first sub-electrode is greater than the M+
The area of 1 sub-electrode.
9. display panel according to claim 5, which is characterized in that the area of the second sub electrode and the M+1
The area of sub-electrode is identical.
10. a kind of driving method of electronic paper display panel, which is characterized in that it is described in any item to be applied to claim 1-9
Display panel, the driving method include:
The stage is shown in different grayscale colours, in first time period, is provided the first driving signal to first sub-electrode, is given institute
It states second sub electrode and applies the 4th voltage, apply common drive signal on the second electrode lay, so that first pixel region
The first colour particles and black particles are moved to the second substrate side in domain, and white particles are moved to first substrate side, described
The first colour particles are moved to the second substrate side in second pixel region；
In second time period, the second driving signal is provided to first sub-electrode, maintains public drive on the second electrode lay
Dynamic signal, wherein first driving signal and second driving signal it is electrically different so that the in the first pixel region
One colour particles are moved to first substrate side, and black particles are mobile from the second substrate to the first substrate side, white
Colored particle is mobile from first substrate from the second substrate side, realizes that different grayscale is shown；
Wherein, in the display panel black particles threshold voltage be greater than first colour particles threshold voltage, it is described
The threshold voltage of white particles is greater than the threshold voltage of first colour particles, the electrical property of the black particles and the white
The electrical property of particle is opposite.
11. driving method according to claim 10, which is characterized in that when the electrophoresis layer further includes M colour particles,
The pixel unit further includes M+1 pixel region, and the first electrode layer further includes M+1 sub-electrode, the M+1 electricity
Pole and the M+1 pixel region to it is corresponding when this method further include:
In the colored stage, in first time period, the first driving signal is provided to the M+1 sub-electrode；
In second time period, M driving signal is provided to the M+1 sub-electrode；
Wherein, the threshold voltage of the M colour particles is less than the threshold voltage of the black particles and is less than the leucoplastid
The threshold voltage of son, M are followed successively by the positive integer for greater than 1 and being not less than N, and N is the positive integer not less than 2.
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| CN107331354B (en) * | 2017-08-10 | 2019-09-03 | 上海中航光电子有限公司 | Electrophoretic display panel and its driving method and display device |
| CN108681178B (en) * | 2018-06-29 | 2021-11-16 | 上海天马微电子有限公司 | Electronic paper display panel, manufacturing method thereof and electronic paper display device |
| CN111292691B (en) * | 2018-12-10 | 2021-12-28 | 江西兴泰科技有限公司 | Low-temperature red waveform debugging method for black-white-red electronic paper module |
| CN110780505B (en) * | 2019-11-13 | 2023-01-20 | 京东方科技集团股份有限公司 | Electronic paper display device and driving method thereof |
| KR20230003577A (en) * | 2020-06-05 | 2023-01-06 | 이 잉크 캘리포니아 엘엘씨 | Methods for achieving color states of less charged particles in an electrophoretic medium containing at least four types of particles |
| CN116540467A (en) * | 2023-07-06 | 2023-08-04 | 惠科股份有限公司 | Electronic paper display screen and driving method thereof |
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