CN109300437A - A kind of electric moistening display part driving method and system - Google Patents
A kind of electric moistening display part driving method and system Download PDFInfo
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- CN109300437A CN109300437A CN201811321421.9A CN201811321421A CN109300437A CN 109300437 A CN109300437 A CN 109300437A CN 201811321421 A CN201811321421 A CN 201811321421A CN 109300437 A CN109300437 A CN 109300437A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims description 19
- 230000001133 acceleration Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 9
- 230000005428 wave function Effects 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 3
- 238000013481 data capture Methods 0.000 claims description 3
- 210000001367 artery Anatomy 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 12
- 239000003990 capacitor Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 241000588769 Proteus <enterobacteria> Species 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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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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Abstract
The invention discloses a kind of electric moistening display part driving method and systems, after the driving voltage for obtaining electric moistening display part, waveform of sharp pulses driving is carried out to electric moistening display part according to driving voltage, overcome in the prior art, with the increase of driving voltage, the pixel of electric moistening display part is easy breakdown technical problem, can effectively avoid the breakdown situation of the pixel of electric moistening display part.
Description
Technical field
The present invention relates to electrowetting field, especially a kind of electric moistening display part driving method and system.
Background technique
In recent years, reflection type display device is concerned, wherein one of most attracting application is exactly electrowetting (electrowetting
Also known as electricity is wet) display device, because its be based on showing under powering state to being realized under the control of polar liquid, so relative to
For other reflective display devices, reaction speed is very fast, while being also able to achieve high brightness, high contrast, low energy consumption.But such as
Where show that picture even video is still greatly improved space on Electrowetting device.
It is all in the prior art using TFT (Thin Film Transistor thin film transistor (TFT)) to electrowetting display unit
It is controlled, software and hardware control voltage is then recycled to realize that gray scale is shown.It is similar to liquid crystal display, thin film transistor (TFT)
After being integrated in each pixel on Electrowetting device, the switch conditions of each pixel are controlled in the way of rank scanning,
The voltage for recycling algorithm control output keeps the display brightness of each unit different to reach the realization of gray scale.Known electricity
Soaking display includes multiple pixel compartments, and Fig. 1 is the single pixel lattice sectional view in electric moistening display, as shown in Figure 1, pixel
Lattice include: first substrate 8, the second substrate 1, first electrode 7, second electrode 2, insulating layer 3, pixel wall 4, first fluid 5 and
Second fluid 6；Second electrode 2 is arranged in the second substrate 1, and insulating layer 3 is arranged in second electrode 2, and pixel wall 4 is arranged exhausted
In edge layer 3, first fluid 5 is filled between every two adjacent pixel wall, and first fluid 5 is opaque, and mutual with second fluid 6
It is immiscible, 6 light transmission of second fluid and conductive or polarity, second fluid 6 be filled in first fluid 5 and first electrode 7 it
Between.Wherein first fluid 5 is preferably ink, and second fluid 6 is preferably water.Electrowetting Electronic Paper is based on two kinds of fluid contact angles
Change and realize display switch, there are a kind of hysteresis phenomenons for electrowetting contact angle, i.e., there are three phases for the variation of contact angle.The
One stage was when starting to apply pixel voltage, and the variation of electrowetting contact angle less, can not observe display from human eye vision
The variation of device optically, the i.e. threshold voltage of contact angle；Second stage is electrowetting contact angle variation with the increase of voltage
Obviously, apparent optical change can be observed；Phase III is when voltage persistently increases, and electrowetting contact angle is not sent out substantially
Changing, the state in a kind of saturation do not observe apparent optical change equally at this time；In addition, part ink can not be by
The control of driving voltage, the telescopicing performance of oil film lose invertibity, electrowetting ink pixel quilt under the drive control of voltage
Breakdown.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to provide a kind of electric moistening display part driving method and system, for effectively avoiding the picture of electric moistening display part
Element is breakdown.
The technical scheme adopted by the invention is that: a kind of electric moistening display part driving method, comprising the following steps:
Driving voltage obtaining step obtains the driving voltage of electric moistening display part；
Actuation step carries out waveform of sharp pulses driving to the electric moistening display part according to the driving voltage.
Further, the actuation step includes:
Drive waveforms obtaining step obtains driving square wave according to the driving voltage,
The driving square wave input differential circuit is driven the electrowetting to export waveform of sharp pulses by differential actuation step
Display device.
Further, the time constant of the differential circuit is less than or equal to 1/10 input pulse time width.
Further, the electric moistening display part driving method further include:
Driving voltage-aperture opening ratio data acquisition step carries out the electric moistening display part using different driving voltage
Waveform of sharp pulses drives to obtain the aperture opening ratio of the electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio data；
Fit procedure, according to the multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part driving voltage
With the matched curve of aperture opening ratio；
Optimal actuation step obtains the maximum point of aperture opening ratio acceleration according to the matched curve；According to the aperture opening ratio
Driving voltage corresponding to the maximum point of acceleration carries out waveform of sharp pulses driving to the electric moistening display part.
Further, the driving voltage-aperture opening ratio data acquisition step includes:
It obtains as the driving voltage rises, the electric moistening display part is in the more of non-polar fluid contraction phase
It organizes driving voltage-aperture opening ratio data or as the driving voltage declines, the electric moistening display part is in non-polar fluid
Multiple groups driving voltage-aperture opening ratio data of expansionary phase.
It is of the present invention another solution is that a kind of electric moistening display part drive system, comprising:
Driving voltage acquiring unit, for obtaining the driving voltage of electric moistening display part；
Driving unit, for carrying out waveform of sharp pulses driving to the electric moistening display part according to the driving voltage.
Further, the driving unit includes
Drive waveforms obtain module, for obtaining driving square wave according to the driving voltage,
Differential drive module drives the electricity for the driving square wave input differential circuit to be exported to waveform of sharp pulses
Soak display device.
Further, it includes editable wave function generator and high-voltage amplifier, institute that the drive waveforms, which obtain module,
The input terminal of the output end and high-voltage amplifier of stating editable wave function generator connects, the output end of the high-voltage amplifier
It is connect with the input terminal of the differential drive module.
Further, the electric moistening display part drive system further include:
Driving voltage-aperture opening ratio data capture unit, for utilizing different driving voltage to the electric moistening display part
Waveform of sharp pulses driving is carried out to obtain the aperture opening ratio of the electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio number
According to；
Fitting unit, for according to the driving of the multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part
The matched curve of voltage and aperture opening ratio；
Optimal driving unit, for obtaining the maximum point of aperture opening ratio acceleration according to the matched curve；It is opened according to described
Driving voltage corresponding to the mouth maximum point of rate acceleration carries out waveform of sharp pulses driving to the electric moistening display part.
The beneficial effects of the present invention are:
A kind of electric moistening display part driving method of the present invention and system, obtain the driving voltage of electric moistening display part
Afterwards, waveform of sharp pulses driving is carried out to electric moistening display part according to driving voltage, overcome in the prior art, with driving voltage
Increase, the pixel of electric moistening display part is easy breakdown technical problem, can effectively avoid the picture of electric moistening display part
The breakdown situation of element.
Detailed description of the invention
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
Fig. 1 is the single pixel lattice sectional view in electric moistening display；
Fig. 2 is a kind of specific embodiment signal of the differential circuit of electric moistening display part driving method in the present invention
Figure；
Fig. 3 is an a kind of specific embodiment structural schematic diagram of electric moistening display part drive system in the present invention；
Fig. 4 is an a kind of specific embodiment matched curve schematic diagram of electric moistening display part driving method in the present invention；
Fig. 5 is electrowetting display screen aperture opening ratio variation diagram under high drive square wave in existing drive scheme；
Fig. 6 is an a kind of specific embodiment display switch state of electric moistening display part driving method in the present invention
Figure；
Fig. 7 is a kind of specific embodiment pixel aperture opening ratio variation of electric moistening display part driving method in the present invention
Curve graph.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
A kind of electric moistening display part driving method, comprising the following steps:
Driving voltage obtaining step obtains the driving voltage of electric moistening display part；
Actuation step carries out waveform of sharp pulses driving to electric moistening display part according to driving voltage.
Electric moistening display part is driven by waveform of sharp pulses, is overcome in the prior art, with the increase of driving voltage,
The pixel of electric moistening display part is easy breakdown technical problem, and the pixel that can effectively avoid electric moistening display part is breakdown
Situation.
As the further improvement of technical solution, actuation step includes:
Drive waveforms obtaining step obtains drive waveforms according to driving voltage, and in the present embodiment, drive waveforms are driving side
Wave.
Differential actuation step, by driving square wave input differential circuit to export waveform of sharp pulses driving electric moistening display
Part.
Wherein, during electrowetting is shown, the corresponding display content of drive waveforms is opened or closed, and actually one connects
The Periodic Rectangular square wave of string.And differential circuit is the mesh that waveform of sharp pulses driving is realized using the charge and discharge phenomena of capacitor
's.It is an a kind of specific implementation illustration of the differential circuit of electric moistening display part driving method in the present invention with reference to Fig. 2, Fig. 2
It is intended to；Input voltage Ui is Periodic Rectangular square wave, and output voltage Uo is spike, and differential circuit includes resistance R1 and capacitor
C1, in the present embodiment, the capacitor of capacitor C1 is 15nF, and the resistance value of resistance R1 is 3k Ω；Differential circuit is actuated to monocycle property
Rectangular pulse, output response is the voltage got from the both ends of resistance R1；In terms of circuit time, the time of differential circuit is normal
Number is less than or equal to 1/10 input pulse time width.Timeconstantτ=0.45 × 10 of differential circuit-4, τ=R × C.RC
Value it is smaller, the impulse waveform time is narrower, on the contrary then wider.Differential circuit only just has in the moment that input waveform mutates
Output voltage does not have any voltage value to export constant voltage input section.Differential circuit is by the driving square wave of input
Switch to sharp pulse wave and then drive electric moistening display part, avoids the breakdown problem of pixel；This driving method is successfully answered
It uses in passive electrowetting display screen.In actual use, it can be selected according to the technique and material for preparing electric moistening display part
Resistance of different sizes and capacitor form suitable differential circuit.
In addition, with reference to Fig. 1, when electric moistening display part is in the phase III that driving voltage persistently increases, due to electricity
Electronics in wetting display fluid is shown substrate and is captured, and electrowetting contact angle can not restore during voltage reduces
To original state, so that the optical states of display that is, the contrast of display or gray scale, aperture opening ratio reduction.Therefore, make
For the further improvement of technical solution, electric moistening display part driving method further include:
Driving voltage-aperture opening ratio data acquisition step carries out sharp arteries and veins to electric moistening display part using different driving voltage
Drive waveform is rushed to obtain the aperture opening ratio of electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio data；It is bright due to determining
Spending most important factor is exactly aperture opening ratio, and therefore, the aperture opening ratio data in addition to directly acquiring electric moistening display part obtain electricity profit
The relative luminance of wet display device replaces the aperture opening ratio also possible.
Fit procedure, according to multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part driving voltage with open
The matched curve of mouth rate；
Optimal actuation step obtains the maximum point of aperture opening ratio acceleration according to matched curve；Most according to aperture opening ratio acceleration
Driving voltage corresponding to big point carries out waveform of sharp pulses driving to electric moistening display part.
Sharp pulse wave is carried out to electric moistening display part according to driving voltage corresponding to the maximum point of aperture opening ratio acceleration
Shape driving, realizes the optimal driving of electric moistening display part, can not only guarantee the acceleration of motion of pixel ink, can also change
The pressure voltage of kind pixel, avoids the breakdown problem of pixel.
Further, driving voltage-aperture opening ratio data acquisition step includes:
It obtains as driving voltage rises, electric moistening display part is in the multiple groups driving electricity of non-polar fluid contraction phase
Pressure-aperture opening ratio data or as driving voltage declines, the multiple groups that electric moistening display part is in the non-polar fluid expansionary phase are driven
Dynamic voltage-aperture opening ratio data.
In the present embodiment, referring to figs. 2 and 3, Fig. 3 is an a kind of tool of electric moistening display part drive system in the present invention
Body example structure schematic diagram；Electric moistening display part drive system includes power supply unit, editable wave function generator, height
Amplifier and differential circuit, the output of editable wave function generator editor's waveform are pressed, then voltage is amplified by high-voltage amplifier
After input differential circuit, after differential circuit is handled export waveform of sharp pulses drive electrowetting display screen.Wherein, differential circuit
Proteus can be used, analogue simulation is carried out to differential circuit, parameter is set as frequency f=100Hz, and the capacitor of capacitor C1 is
The resistance value of 15nF, resistance R1 are 3k Ω.It can be with design driven square wave, by high voltage amplifier using editable wave function generator
Device be amplified to must voltage value, be connected to electrowetting display screen by differential circuit.It, can then using drive system shown in Fig. 3
To modify the size of the driving voltage of electrowetting display screen, to obtain multiple groups driving voltage-aperture opening ratio data.
The realization process of optimal driving is specifically described below: with reference to Fig. 1 and Fig. 3, electric profit is driven using system shown in Figure 3
Wet display screen, in the present embodiment, the size of electrowetting display screen single pixel lattice used is 150 μm of 150 μ m, and pixel wall is high
Degree is 5.6 μm, and thickness of insulating layer is 1 μm, and the height of ITO bottom plate to upper cover plate is 75 μm in pixel compartments, and colored ink is using molten
Agent decane, molecular concentration 10wt%.
S0, to applying a starting voltage between two electrode of pixel of electrowetting display screen and continuing for some time, make electrowetting
Non-polar fluid in display is shunk；Wherein, starting voltage is greater than or equal to the driving saturation voltage of electrowetting display screen.
S1, it obtains electrowetting electronic-paper display screen and increases with driving voltage, electrowetting contact angle, aperture opening ratio or reflectivity
Variation, and as driving voltage reduces, the variation of electrowetting contact angle, aperture opening ratio or reflectivity；Specifically, since 0V
Apply driving voltage to test the aperture opening ratio of a display screen to 40V, every 0.1V, obtain multiple groups aperture opening ratio data (xi, yi), i=
0,1 ..., m, m=321, x indicate that voltage, y indicate the aperture opening ratio that each point is surveyed here.
S2, be with reference to Fig. 4, Fig. 4 a kind of electric moistening display part driving method in the present invention specific embodiment fitting
Curve synoptic diagram；Conic fitting, conic section are carried out to the data value of acquired driving voltage and aperture opening ratio in step S1
Fitting, which is equivalent to, removes actual relationship between two kinds of physical quantitys of forecast assessment with quadratic polynomial according to resulting experimental data, into
And determine matched curve.Fitting empirical equation are as follows: p (x)=a0+a1x+a2x2, wherein x be it is known, i.e., in driving data
Voltage value, Q (a0,a1,a2) error sum of squares a between matched curve and experimental data0,a1,a2Most by error sum of squares
Small value solves, and then determines matched curve.
By the extremum principle of the function of many variables, Q (a0,a1,a2) minimum meet:
Arrangement obtains the normal equation of quadratic polynomial Function Fitting:
It solves this equation and obtains a0,a1,a2Value, to obtain the fitting function p (x) under mean square deviation least meaning, from
And obtain the normal equation of quadratic fit curve.
S3, according to quadratic fit curve equation, aperture opening ratio acceleration during being driven acquires aperture opening ratio acceleration
The acceleration of maximum P point, the movement of pixel ink increases with the increase for applying maximum voltage.
S4, electrowetting display screen is driven using driving voltage corresponding to P point, it can while meeting aperture opening ratio and pixel
Not breakdown requirement.
Electric moistening display part is driven using traditional drive scheme, i.e., is driven using square wave, for a saturation electricity
Pressure is the electrowetting display screen of 32V, applies 40V driving voltage to it.After display screen is applied 40V driving voltage switch 8 times, oil
The reaction speed of ink obviously slows down.It is in existing drive scheme with reference to Fig. 5, Fig. 5, electrowetting display screen is opened under high drive square wave
Mouth rate variation diagram；After illustrating the reduction of ink movement velocity, the aperture opening ratio in the 120s time after from standard-sized sheet to closing voltage becomes
Change.The good electrowetting display switch time is about 10ms, and after applying the driving voltage more than threshold voltage to it, 120s
Ink is not still spread out completely in some pixels afterwards, and the average open rate of display screen is reduced to 49.03% from 75.71%.
Also, ink movement becomes sluggish in pixel, and some pixels are breakdown, not by the control of voltage.And it uses of the invention
Sharp pulse driving method drives above-mentioned electric moistening display part, when the driving voltage input differential circuit of 40V is driven, reference
Fig. 6, Fig. 6 are an a kind of specific embodiment display switch state diagrams of electric moistening display part driving method in the present invention；Show
The display switch state anticipated after continuing 2 minutes under 40V driving voltage.Pixel is driven using different size of driving voltage
Point, and the aperture opening ratio of pixel is obtained, the change curve of pixel aperture opening ratio is obtained, as shown in fig. 7, Fig. 7 is one in the present invention
One specific embodiment pixel aperture opening ratio change curve of kind electric moistening display part driving method；Pixel aperture opening ratio is maximum
It can reach 81.5%, the method than directly driving using traditional square wave increases 7.11%；Two are carried out to the aperture opening ratio curve of Fig. 7
Secondary fitting acquires aperture opening ratio acceleration, learns from aperture opening ratio acceleration a=3.53 and is increased to a=3.70.
It it should be noted that the electric moistening display part in the embodiment of the present invention is monochrome display, and is passive
Display screen is driven, if the electric moistening display part to be driven is color active electrowetting display screen, this hair also can be used
Bright driving method is driven, and same desired effect will be obtained.
The present invention also provides a kind of electric moistening display part drive systems, comprising:
Driving voltage acquiring unit, for obtaining the driving voltage of electric moistening display part；
Driving unit, for carrying out waveform of sharp pulses driving to electric moistening display part according to driving voltage.
Further, driving unit includes
Drive waveforms obtain module, for obtaining driving square wave according to driving voltage；Specifically, with reference to Fig. 3, drive waveforms
Obtaining module includes editable wave function generator and high-voltage amplifier, the output end and height of editable wave function generator
The input terminal connection of amplifier is pressed, the output end of high-voltage amplifier is connect with the input terminal of differential drive module.
Differential drive module is shown for that will drive square wave input differential circuit with exporting waveform of sharp pulses driving electrowetting
Device.With reference to Fig. 3, differential drive module is differential circuit.
As the further improvement of technical solution, electric moistening display part drive system further include:
Driving voltage-aperture opening ratio data capture unit, for being carried out using different driving voltage to electric moistening display part
Waveform of sharp pulses drives to obtain the aperture opening ratio of electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio data；
Fitting unit, for according to multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part driving voltage
With the matched curve of aperture opening ratio；
Optimal driving unit, for obtaining the maximum point of aperture opening ratio acceleration according to matched curve；Accelerated according to aperture opening ratio
It spends driving voltage corresponding to maximum point and waveform of sharp pulses driving is carried out to electric moistening display part.
The course of work of electric moistening display part drive system is specific referring to above-mentioned electric moistening display part driving method
Description, repeats no more.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (9)
1. a kind of electric moistening display part driving method, which comprises the following steps:
Driving voltage obtaining step obtains the driving voltage of electric moistening display part；
Actuation step carries out waveform of sharp pulses driving to the electric moistening display part according to the driving voltage.
2. electric moistening display part driving method according to claim 1, which is characterized in that the actuation step includes:
Drive waveforms obtaining step obtains driving square wave according to the driving voltage,
The driving square wave input differential circuit is driven the electrowetting to show by differential actuation step to export waveform of sharp pulses
Device.
3. electric moistening display part driving method according to claim 2, which is characterized in that the time of the differential circuit
Constant is less than or equal to 1/10 input pulse time width.
4. electric moistening display part driving method according to any one of claims 1 to 3, which is characterized in that the electricity profit
Wet display device driving method further include:
Driving voltage-aperture opening ratio data acquisition step carries out sharp arteries and veins to the electric moistening display part using different driving voltage
Drive waveform is rushed to obtain the aperture opening ratio of the electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio data；
Fit procedure, according to the multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part driving voltage with open
The matched curve of mouth rate；
Optimal actuation step obtains the maximum point of aperture opening ratio acceleration according to the matched curve；Accelerated according to the aperture opening ratio
It spends driving voltage corresponding to maximum point and waveform of sharp pulses driving is carried out to the electric moistening display part.
5. electric moistening display part driving method according to claim 4, which is characterized in that the driving voltage-opening
Rate data acquisition step includes:
It obtains as the driving voltage rises, the multiple groups that the electric moistening display part is in the non-polar fluid contraction phase are driven
It moves voltage-aperture opening ratio data or as the driving voltage declines, the electric moistening display part is in non-polar fluid expansion
Multiple groups driving voltage-aperture opening ratio the data in stage.
6. a kind of electric moistening display part drive system characterized by comprising
Driving voltage acquiring unit, for obtaining the driving voltage of electric moistening display part；
Driving unit, for carrying out waveform of sharp pulses driving to the electric moistening display part according to the driving voltage.
7. electric moistening display part drive system according to claim 6, which is characterized in that the driving unit includes
Drive waveforms obtain module, for obtaining driving square wave according to the driving voltage,
Differential drive module drives the electrowetting for the driving square wave input differential circuit to be exported to waveform of sharp pulses
Display device.
8. electric moistening display part drive system according to claim 7, which is characterized in that the drive waveforms obtain mould
Block includes editable wave function generator and high-voltage amplifier, the output end and high pressure of the editable wave function generator
The input terminal of amplifier connects, and the output end of the high-voltage amplifier is connect with the input terminal of the differential drive module.
9. according to the described in any item electric moistening display part drive systems of claim 6 to 8, which is characterized in that the electricity profit
Wet display device drive system further include:
Driving voltage-aperture opening ratio data capture unit, for being carried out using different driving voltage to the electric moistening display part
Waveform of sharp pulses drives to obtain the aperture opening ratio of the electric moistening display part, obtains multiple groups driving voltage-aperture opening ratio data；
Fitting unit, for according to the multiple groups driving voltage-aperture opening ratio data acquisition electric moistening display part driving voltage
With the matched curve of aperture opening ratio；
Optimal driving unit, for obtaining the maximum point of aperture opening ratio acceleration according to the matched curve；According to the aperture opening ratio
Driving voltage corresponding to the maximum point of acceleration carries out waveform of sharp pulses driving to the electric moistening display part.
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| CN201811321421.9A CN109300437B (en) | 2018-11-07 | 2018-11-07 | Electrowetting display device driving method and system |
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| CN201811321421.9A CN109300437B (en) | 2018-11-07 | 2018-11-07 | Electrowetting display device driving method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192558A (en) * | 2020-01-15 | 2020-05-22 | 电子科技大学中山学院 | Driving method of electronic ink for display |
| CN111341277A (en) * | 2020-03-19 | 2020-06-26 | 华南师范大学 | Electrowetting display device driving method and system |
| CN114898718A (en) * | 2022-06-10 | 2022-08-12 | 福州大学 | Real-time color conversion method for colored electrowetting electronic paper |
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Effective date of registration: 20240613 Address after: 518000 b715, Yinxing technology building, 1301 Guanlan community sightseeing Road, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN GUOHUA OPTOELECTRONICS Co.,Ltd. Country or region after: China Address before: 518110 703-1, 7th floor, No. 1301-1, sightseeing Road, dabuxiang community, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN GUOHUA OPTOELECTRONICS Co.,Ltd. Country or region before: China Patentee before: ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS Patentee before: SOUTH CHINA NORMAL University |