CN103984088B - A kind of electric moistening display and driving method thereof - Google Patents
A kind of electric moistening display and driving method thereof Download PDFInfo
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- CN103984088B CN103984088B CN201410203529.3A CN201410203529A CN103984088B CN 103984088 B CN103984088 B CN 103984088B CN 201410203529 A CN201410203529 A CN 201410203529A CN 103984088 B CN103984088 B CN 103984088B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 44
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 230000000630 rising effect Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The present invention is applicable to display technology field, and the present invention provides a kind of electric moistening display and driving method thereof, and electric moistening display includes: the first electrode, the second electrode, insulating barrier, pixel wall, first fluid and second fluid；Electric moistening display also includes voltage applying unit, voltage applying unit in the first predetermined amount of time to applying the first voltage between the first electrode and the second electrode；After the first predetermined amount of time terminates, voltage applying unit is to applying the dynamic electric voltage that magnitude of voltage is incremented by between the first electrode and the second electrode in the second predetermined amount of time, and the magnitude of voltage of dynamic electric voltage is increased to the second voltage at the end of the second predetermined amount of time.The electric moistening display of present invention offer and driving method thereof, use the voltage being gradually increased to drive electric moistening display part, make the middle effective area of each pixel compartments increase, thus improves overall the displaying contrast of pixel.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of electric moistening display and driving method thereof.
Background technology
In recent years, reflection type display device receives much concern, and one of the most attracting application is exactly electrowetting
Display device.Because it is based on realizing display under control to polar liquid under powering state, so relative to
For other reflective display device, response speed is very fast, also can realize high brightness, high-contrast, low simultaneously
Energy consumption.The ultimate principle that electrowetting shows is: when not applying voltage, i.e. under poised state, and band color
Glossy wet hydrophobic dielectric, the whole unit that tiles because of its hydrophobicity, thus color present oil color,
Overall brightness is dark.But, when applying voltage between transparency electrode and the second electrode contacted with water,
Oil moves to a jiao of pixel cell, and then the major part of pixel presents the white of substrate, and overall brightness becomes
Bright.
Electric moistening display 100 of the prior art, as depicted in figs. 1 and 2, including: first substrate 8,
Second substrate the 1, first electrode the 7, second electrode 2, insulating barrier 3, pixel wall 4, first fluid 5 and
Second fluid 6；Second electrode 2 is arranged on second substrate 1, and insulating barrier 3 is arranged on the second electrode 2,
Pixel wall 4 arranges on the insulating layer 3, and first fluid 5 is filled between the pixel wall that each two is adjacent, the
One fluid 5 is light tight, and immiscible with second fluid 6, second fluid 6 printing opacity and have electric conductivity or
Polarity, second fluid 6 is filled between first fluid 5 and the first electrode 7.
In the case of being not added with voltage, first fluid 5 tiles, and first fluid 5 can be ink, therefore shows
The color of colored oil film, now light 9 is dark light.
When applying voltage between the first electrode 7 and the second electrode 2, all use the voltage that moment rises, as
Shown in Fig. 3, the voltage applying moment rising is easily caused the mobile instability of first fluid 5, and when executing
When the voltage added increases suddenly, first fluid 5 is even made easily to divide, as shown in Figure 4 and Figure 5, through anti-
The bright light rays 11 shot out will reduce, thus causes the decline of overall brightness.In sum, prior art
Middle existence due to apply in-between the electrodes the voltage that moment rises make ink splitting cause overall brightness declines asks
Topic.
Summary of the invention
It is an object of the invention to provide a kind of electric moistening display, it is intended to solve to exist in prior art
Owing to applying the problem that the voltage of moment rising makes ink splitting cause overall brightness to decline in-between the electrodes.
The present invention is achieved in that a kind of electric moistening display, comprising: the first electrode, the second electrode,
Insulating barrier, multiple pixel wall, first fluid and second fluid；
Described insulating barrier is arranged on described second electrode, and the plurality of pixel wall is arranged on described insulating barrier,
Described first fluid is filled between the described pixel wall that each two is adjacent, and described first fluid is light tight, and
Immiscible with described second fluid, described second fluid printing opacity also has electric conductivity or polarity, and described second
Fluid filled is between described first fluid and described first electrode；
Described electric moistening display also includes voltage applying unit, described voltage applying unit and described first electricity
Pole and described second electrode connect；
Described voltage applying unit in the first predetermined amount of time to described first electrode and described second electrode it
Between apply the first voltage；
After described first predetermined amount of time terminates, described voltage applying unit in the second predetermined amount of time to
The dynamic electric voltage that a magnitude of voltage is incremented by is applied between described first electrode and described second electrode, and described dynamic
The magnitude of voltage of state voltage is increased to the second voltage at the end of described second predetermined amount of time；
After described second predetermined amount of time terminates, described voltage applying unit is to described first electrode and described
Described second voltage is applied between second electrode.
Another object of the present invention also resides in a kind of driving method based on above-mentioned electric moistening display of offer,
Comprise the following steps:
Described voltage applying unit in the first predetermined amount of time to described first electrode and described second electrode it
Between apply the first voltage；
After described first predetermined amount of time terminates, described voltage applying unit in the second predetermined amount of time to
The dynamic electric voltage that a magnitude of voltage is incremented by is applied between described first electrode and described second electrode, and described dynamic
The magnitude of voltage of state voltage is increased to the second voltage at the end of described second predetermined amount of time；
After described second predetermined amount of time terminates, described voltage applying unit is to described first electrode and described
Described second voltage is applied between second electrode.
The electric moistening display of present invention offer and driving method thereof, compared with prior art, electrowetting shows
The driving voltage of device is not to raise suddenly, but the voltage that employing is gradually increased is to drive electric moistening display part,
It is droplet that first fluid will not " be torn " by the electric field force between electrode, makes the entirety that first fluid is stable
Move to one jiao of pixel compartments, make the middle effective area of each pixel compartments increase, thus improve pixel entirety
Display contrast, solve the voltage existed in prior art owing to applying moment rising in-between the electrodes and make oil
Ink division causes the problem that overall brightness declines.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to embodiment or existing skill
In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creative labor
On the premise of dynamic property, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the single pixel compartments profile in electric moistening display of the prior art；
Fig. 2 is the single pixel compartments top view in electric moistening display of the prior art；
Fig. 3 is the applying change in voltage schematic diagram of electric moistening display of the prior art；
Fig. 4 is the single pixel compartments profile after applying voltage in electric moistening display of the prior art；
Fig. 5 is the single pixel compartments top view after applying voltage in electric moistening display of the prior art；
Fig. 6 is the single pixel compartments schematic diagram in the electric moistening display that the embodiment of the present invention provides；
Fig. 7 is the applying change in voltage schematic diagram of the electric moistening display that the embodiment of the present invention provides；
Fig. 8 is that the single pixel compartments after the electric moistening display that the embodiment of the present invention provides applies voltage is overlooked
Figure；
Fig. 9 is to apply in the electric moistening display part that the embodiment of the present invention provides according to moving that friction speed increases
The display brightness applying, in state voltage and prior art, the voltage that moment increases compares schematic diagram；
Figure 10 is the applying change in voltage schematic diagram of the electric moistening display that another kind embodiment of the present invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
In order to technical scheme is described, illustrate below by specific embodiment.
Embodiments provide a kind of electric moistening display 101, as shown in Figure 6, including: the first base
Plate 8, second substrate the 1, first electrode the 7, second electrode 2, insulating barrier 3, pixel wall 4, first fluid 5
And second fluid 6；Second electrode 2 is arranged on second substrate 1, and insulating barrier 3 is arranged on the second electrode 2
On, pixel wall 4 arranges on the insulating layer 3, and first fluid 5 is filled between the pixel wall that each two is adjacent,
First fluid 5 is light tight, and immiscible with second fluid 6, and second fluid 6 printing opacity also has electric conductivity
Or polarity, second fluid 6 is filled between first fluid 5 and the first electrode 7.
Wherein first fluid 5 is preferably ink, and second fluid 6 is preferably water.
Electric moistening display 101 also includes voltage applying unit 20, voltage applying unit 20 and the first electrode 7
Connect with the second electrode 2.
As it is shown in fig. 7, voltage applying unit 20 is at the first predetermined amount of time t1Introversive first electrode 7 and the
The first voltage V is applied between two electrodes 51。
At the first predetermined amount of time t1After end, voltage applying unit 20 is at the second predetermined amount of time t2-t1
The dynamic electric voltage that a magnitude of voltage is incremented by, and dynamic electric is applied between inherent first electrode 7 and the second electrode 5
The magnitude of voltage of pressure is at the second predetermined amount of time t2-t1At the end of be increased to the second voltage V2。
At the second predetermined amount of time t2-t1After end, voltage applying unit 20 is to the first electrode 5 and the second electricity
The second voltage V is applied between pole 52。
Further, in an embodiment of the present invention, at the second predetermined amount of time t2-t1In, dynamic electric
The magnitude of voltage of pressure is from the first voltage V1Gradually it is incremented to the second voltage V2。
Wherein, the waveform shape of dynamic electric voltage for oblique line formula rising waveform, parabolic rising waveform or circle
Arc formula rising waveform.
Preferably, the waveform shape of dynamic electric voltage for oblique line formula rising waveform.
Concrete, can be obtained in dynamic voltage waveforms by the circuit of the discrete component such as resistance and electric capacity composition
Oblique line formula rising waveform, parabolic rising waveform or circular arc type rising waveform.
The the first voltage V being added between the first electrode and the second electrode due to the embodiment of the present invention1Gradually it is incremented by
To the second voltage V2, although the speed that voltage increases slows down relatively, but the response speed to electric moistening display
Degree not too much influence, the motion but making ink between the first electrode and the second electrode is more stable,
Make ink easier be contracted in a jiao of pixel wall, as shown in Figure 8, make the light reflected further
Line 11 increases, thus causes the rising of overall brightness.
As it is shown in figure 9, be electric moistening display part is applied the dynamic electric voltage that increases according to different speed and
Electric moistening display is applied the display brightness after the voltage of moment increase by prior art compare.Wherein
Round dot is the display brightness that electric moistening display applies the voltage that moment increases, and side's point is to electricity in the present invention
Moistening display device applies the display brightness of the dynamic electric voltage increased according to friction speed, can draw from figure
The employing present invention is that the brightness of the electric moistening display that embodiment provides is substantially bright than prior art, and when electricity
Press rise speed the slowest when, display brightness is the brightest.
Further, in other embodiments of the present invention, referring to Figure 10, voltage applying unit is pre-first
T in the section of fixing time1The first voltage V is applied between the first electrode 7 and the second electrode 51。
At the first predetermined amount of time t1After end, voltage applying unit 20 is at the first electrode 7 and the second electrode 5
Between apply higher than the first voltage V1Threshold voltage V3, and at the second predetermined amount of time t2-t1Interior applying from
Threshold voltage V3Gradually it is incremented to the second voltage V2Dynamic electric voltage.
At the second predetermined amount of time t2-t1After end, voltage applying unit 20 is to the first electrode 7 and the second electricity
The second voltage V is applied between pole 52。
First first voltage instantaneous is suddenlyd change to threshold voltage by the embodiment of the present invention, the most again by threshold voltage by
Gradually it is incremented to the second voltage, improves the speed that voltage increases compared with above-described embodiment, therefore improve electricity
The response speed of moistening display, the motion simultaneously also making ink is more stable, makes ink easier shrink
At one jiao of pixel compartments, make the bright light rays reflected increase further, thus cause the rising of overall brightness.
The another kind of embodiment of the present invention provides the driving method of electric moistening display in a kind of above-described embodiment,
Comprise the following steps:
Voltage applying unit 20 is at the first predetermined amount of time t1Between inherent first electrode 7 and the second electrode 5
Apply the first voltage V1。
At the first predetermined amount of time t1After end, voltage applying unit 20 is applied to the second predetermined amount of time t2-t1
The dynamic electric voltage that a magnitude of voltage is incremented by, and dynamic electric is applied between inherent first electrode 7 and the second electrode 5
The magnitude of voltage of pressure is at the second predetermined amount of time t2-t1At the end of be increased to the second voltage V2。
At the second predetermined amount of time t2-t1After end, voltage applying unit 20 is to the first electrode 7 and the second electricity
The second voltage V is applied between pole 52。
Further, in an embodiment of the present invention, at the second predetermined amount of time t2-t1In, dynamic electric
The magnitude of voltage of pressure is from the first voltage V1Gradually it is incremented to the second voltage V2。
Further, in another kind embodiment of the present invention, at the second predetermined amount of time t2-t1In, dynamically
The magnitude of voltage of voltage is from more than the first voltage V1Threshold voltage V3Gradually it is incremented to the second voltage V2。
The electric moistening display of present invention offer and driving method thereof, compared with prior art, electrowetting shows
The driving voltage of device is not to raise suddenly, but first moment is increased to threshold voltage, uses and gradually increases
The voltage added is to drive electric moistening display part, and first fluid will not " be torn " by the electric field force between electrode
For droplet, making the stable mass motion of first fluid to a jiao of pixel compartments, making can in each pixel compartments
Apparent area increases, thus improves overall the displaying contrast of pixel, does not reduce response speed simultaneously, solves
Prior art exists owing to applying the voltage that moment rises in-between the electrodes to make ink splitting cause overall bright
The problem that degree declines.
It should be noted that structure and the driving method of electric moistening display can equally be well applied to electricity in the present invention
Wet-type display.
Above content is to combine concrete preferred implementation further description made for the present invention, no
Can assert the present invention be embodied as be confined to these explanations.Common for the technical field of the invention
For technical staff, make some equivalents without departing from the inventive concept of the premise and substitute or obvious modification,
And performance or purposes are identical, all should be considered as belonging to the present invention by the claims submitted to determine special
Profit protection domain.
Claims (10)
1. an electric moistening display, including: the first electrode, the second electrode, insulating barrier, multiple pixel wall,
First fluid and second fluid；
Described insulating barrier is arranged on described second electrode, and the plurality of pixel wall is arranged on described insulating barrier,
Described first fluid is filled between the described pixel wall that each two is adjacent, and described first fluid is light tight, and
Immiscible with described second fluid, described second fluid printing opacity also has electric conductivity or polarity, and described second
Fluid filled is between described first fluid and described first electrode；
Described electric moistening display also includes voltage applying unit, described voltage applying unit and described first electricity
Pole and described second electrode connect；
It is characterized in that, described voltage applying unit in the first predetermined amount of time to described first electrode and institute
State and between the second electrode, apply the first voltage；
After described first predetermined amount of time terminates, described voltage applying unit in the second predetermined amount of time to
The dynamic electric voltage that a magnitude of voltage is incremented by is applied between described first electrode and described second electrode, and described dynamic
The magnitude of voltage of state voltage is increased to the second voltage at the end of described second predetermined amount of time；
After described second predetermined amount of time terminates, described voltage applying unit is to described first electrode and described
Described second voltage is applied between second electrode.
2. electric moistening display as claimed in claim 1, it is characterised in that in described second scheduled time
In section, the magnitude of voltage of described dynamic electric voltage is gradually to be incremented to described second voltage from described first voltage.
3. electric moistening display as claimed in claim 1, it is characterised in that in described second scheduled time
In section, the magnitude of voltage of described dynamic electric voltage is gradually to be incremented to institute from more than the threshold voltage of described first voltage
State the second voltage.
4. electric moistening display as claimed in claim 2 or claim 3, it is characterised in that described dynamic electric voltage
Waveform is oblique line formula rising waveform.
5. electric moistening display as claimed in claim 2 or claim 3, it is characterised in that described dynamic electric voltage
Waveform is parabolic rising waveform or circular arc type rising waveform.
6. a driving method based on the electric moistening display as described in claim 1 to 5 any one,
It is characterized in that, comprise the following steps:
Described voltage applying unit in the first predetermined amount of time to described first electrode and described second electrode it
Between apply the first voltage；
After described first predetermined amount of time terminates, described voltage applying unit in the second predetermined amount of time to
The dynamic electric voltage that a magnitude of voltage is incremented by is applied between described first electrode and described second electrode, and described dynamic
The magnitude of voltage of state voltage is increased to the second voltage at the end of described second predetermined amount of time；
After described second predetermined amount of time terminates, described voltage applying unit is to described first electrode and described
Described second voltage is applied between second electrode.
7. driving method as claimed in claim 6, it is characterised in that in described second predetermined amount of time,
The magnitude of voltage of described dynamic electric voltage is gradually to be incremented to described second voltage from described first voltage.
8. driving method as claimed in claim 6, it is characterised in that in described second predetermined amount of time,
The magnitude of voltage of described dynamic electric voltage is gradually to be incremented to described second from more than the threshold voltage of described first voltage
Voltage.
9. driving method as claimed in claim 7 or 8, it is characterised in that the waveform of described dynamic electric voltage
For oblique line formula rising waveform.
10. driving method as claimed in claim 7 or 8, it is characterised in that the ripple of described dynamic electric voltage
Shape is parabolic rising waveform or circular arc type rising waveform.
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| US9659534B2 (en) * | 2014-12-29 | 2017-05-23 | Amazon Technologies, Inc. | Reducing visual artifacts and reducing power consumption in electrowetting displays |
| CN104867460A (en) * | 2015-05-20 | 2015-08-26 | 华南师范大学 | Gradation display modulating method for electrowetting display |
| US10255835B2 (en) * | 2015-09-28 | 2019-04-09 | Amazon Technologies, Inc. | Luminance and reducing power consumption in electrowetting displays |
| CN106486071B (en) * | 2016-12-23 | 2018-11-27 | 福州大学 | A kind of electric moistening display non-linear voltage amplitude gray modulation method and device thereof |
| CN106952620B (en) | 2017-03-09 | 2018-09-25 | 深圳市国华光电研究院 | The bistable state driving method and relevant electric moistening display of electric moistening display |
| CN107367835B (en) * | 2017-08-08 | 2020-06-16 | 华南师范大学 | Electrowetting display and preparation method thereof |
| CN107767821A (en) * | 2017-10-17 | 2018-03-06 | 华南师范大学 | A kind of fast refreshing method, system and device for suppressing ink splitting |
| CN109300437B (en) * | 2018-11-07 | 2020-11-24 | 深圳市国华光电科技有限公司 | Electrowetting display device driving method and system |
| CN109782476B (en) * | 2019-03-13 | 2022-12-16 | 京东方科技集团股份有限公司 | Reflective display device and manufacturing method thereof |
| CN110277071A (en) * | 2019-08-01 | 2019-09-24 | 福州大学 | Electrowetting low power image display methods based on human-eye visual characteristic |
| CN114527563B (en) * | 2020-11-23 | 2023-02-03 | 华为技术有限公司 | Liquid light ring control method and device |
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| KR20060120006A (en) * | 2003-10-08 | 2006-11-24 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Electrowetting display device |
| EP1761819A1 (en) * | 2004-06-23 | 2007-03-14 | Koninklijke Philips Electronics N.V. | Bi-stable electrowetting optical element and driving method therefore |
| GB0918959D0 (en) * | 2009-10-29 | 2009-12-16 | Liquavista Bv | Driving an electrowetting display device |
| TWI407404B (en) * | 2010-11-30 | 2013-09-01 | Ind Tech Res Inst | Driving method of electro-wetting display device |
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Application publication date: 20140813 Assignee: Guangxian Technology (Guangdong) Co.,Ltd. Assignor: SHENZHEN GUOHUA OPTOELECTRONICS Co.,Ltd. Contract record no.: X2024980014574 Denomination of invention: An electrowetting display and its driving method Granted publication date: 20160928 License type: Exclusive License Record date: 20240910 |