CN103984088A - Electric wetting displayer and drive method thereof - Google Patents
Electric wetting displayer and drive method thereof Download PDFInfo
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- CN103984088A CN103984088A CN201410203529.3A CN201410203529A CN103984088A CN 103984088 A CN103984088 A CN 103984088A CN 201410203529 A CN201410203529 A CN 201410203529A CN 103984088 A CN103984088 A CN 103984088A
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Abstract
The invention is suitable for the technical field of displayers, and provides an electric wetting displayer and a drive method of the electric wetting displayer. The electric wetting displayer comprises a first electrode, a second electrode, an insulation layer, a pixel wall, first fluid, second fluid and a voltage exerting unit which exerts a first voltage between the first electrode and the second electrode within a first preset time period; after the first preset time period, the voltage exerting unit exerts a dynamic voltage with incremental voltage values between the first electrode and the second electrode within a second preset time period, and the voltage value of the dynamic voltage is increased into a second voltage value after the second preset time period. According to the electric wetting displayer and the drive method of the electric wetting displayer, the electric wetting device is driven by the voltage gradually increasing, so that the visual area of each pixel grid is increased, and therefore the display contrast ratio of whole pixels is increased.
Description
Technical field
The present invention relates to display technology field, relate in particular to a kind of electric moistening display and driving method thereof.
Background technology
In recent years, reflection type display device receives much concern, and wherein one of the most attracting application is exactly electric moistening display part.Because it is based under powering state, realization under the control of polar liquid being shown, so reaction velocity is very fast for other reflective display device, also can realize high brightness, high-contrast, low energy consumption simultaneously.The wetting ultimate principle showing of electricity is: when not applying voltage, and under equilibrium state, colored glossy wet hydrophobic dielectric, because of its hydrophobicity whole unit that tiles, so color presents oily color, overall brightness is darker.Yet when applying voltage between transparency electrode and the second electrode of contacting with water, oil moves to a jiao of pixel cell, then the major part of pixel presents the white of substrate, and overall brightness brightens.
Electric moistening display 100 of the prior art, as depicted in figs. 1 and 2, comprising: first substrate 8, second substrate 1, the first electrode 7, the second electrode 2, insulation course 3, pixel wall 4, first fluid 5 and second fluid 6; The second electrode 2 is arranged on second substrate 1, insulation course 3 is arranged on the second electrode 2, pixel wall 4 is arranged on insulation course 3, first fluid 5 is filled between every two adjacent pixel wall, first fluid 5 is light tight, and immiscible with second fluid 6, second fluid 6 printing opacities also have electric conductivity or polarity, and second fluid 6 is filled between first fluid 5 and the first electrode 7.
First fluid 5 tilings in not alive situation, first fluid 5 can be ink, so the color of display color oil film, now light 9 is darker light.
While applying voltage between the first electrode 7 and the second electrode 2, all adopt the voltage of moment rising, as shown in Figure 3, the voltage that applies moment rising easily causes the movement of first fluid 5 unstable, and when the voltage applying increases suddenly, even make first fluid 5 easily divide, as shown in Figure 4 and Figure 5, bright light rays 11 through reflecting will reduce, thereby causes the decline of overall brightness.In sum, in prior art, there is the problem that makes ink splitting cause overall brightness to decline owing to applying the voltage of moment rising between electrode.
Summary of the invention
The object of the present invention is to provide a kind of electric moistening display, be intended to solve the problem that makes ink splitting cause overall brightness to decline owing to applying the voltage of moment rising between electrode for existing in prior art.
The present invention is achieved in that a kind of electric moistening display, and it comprises: the first electrode, the second electrode, insulation course, a plurality of pixel wall, first fluid and second fluid;
Described insulation course is arranged on described the second electrode, described a plurality of pixel wall is arranged on described insulation course, described first fluid is filled between every two adjacent described pixel wall, 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 is filled between described first fluid and described the first electrode;
Described electric moistening display also comprises voltage applying unit, and described voltage applying unit is connected with described the second electrode with described the first electrode;
Described voltage applying unit applies the first voltage in the first predetermined amount of time between described the first electrode and described the second electrode;
After described the first predetermined amount of time finishes, described voltage applying unit applies the dynamic electric voltage that a magnitude of voltage increases progressively in the second predetermined amount of time between described the first electrode and described the second electrode, and the magnitude of voltage of described dynamic electric voltage is increased to second voltage when described the second predetermined amount of time finishes;
After described the second predetermined amount of time finishes, described voltage applying unit applies described second voltage between described the first electrode and described the second electrode.
Another object of the present invention is also to provide a kind of driving method based on above-mentioned electric moistening display, comprises the following steps:
Described voltage applying unit applies the first voltage in the first predetermined amount of time between described the first electrode and described the second electrode;
After described the first predetermined amount of time finishes, described voltage applying unit applies the dynamic electric voltage that a magnitude of voltage increases progressively in the second predetermined amount of time between described the first electrode and described the second electrode, and the magnitude of voltage of described dynamic electric voltage is increased to second voltage when described the second predetermined amount of time finishes;
After described the second predetermined amount of time finishes, described voltage applying unit applies described second voltage between described the first electrode and described the second electrode.
Electric moistening display provided by the invention and driving method thereof, compared with prior art, the driving voltage of electric moistening display is not unexpected rising, but adopt the voltage increasing gradually to drive electric moistening display part, electric field force between electrode can " not torn first fluid " as droplet, make the stable mass motion of first fluid to one jiao of pixel compartments, the middle effective area of each pixel compartments is increased, thereby improve the display comparison degree of pixel integral body, solved the problem that makes ink splitting cause overall brightness to decline owing to applying the voltage of moment rising between electrode that exists in prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the single pixel compartments sectional view in electric moistening display of the prior art;
Fig. 2 is the single pixel compartments vertical view in electric moistening display of the prior art;
Fig. 3 be electric moistening display of the prior art apply change in voltage schematic diagram;
Fig. 4 is the single pixel compartments sectional view applying in electric moistening display of the prior art after voltage;
Fig. 5 is the single pixel compartments vertical view applying in electric moistening display of the prior art after voltage;
Fig. 6 is the single pixel compartments schematic diagram in the electric moistening display that provides of the embodiment of the present invention;
Fig. 7 be the electric moistening display that provides of the embodiment of the present invention apply change in voltage schematic diagram;
Fig. 8 is that the electric moistening display that the embodiment of the present invention provides applies the single pixel compartments vertical view after voltage;
The display brightness schematic diagram relatively that applies the voltage that moment increases in the dynamic electric voltage that increases according to friction speed and prior art is provided in the electric moistening display part that provides of the embodiment of the present invention Fig. 9;
Figure 10 be the electric moistening display that provides of the another kind of embodiment of the present invention apply change in voltage schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
For technical scheme of the present invention is described, below by specific embodiment, describe.
The embodiment of the present invention provides a kind of electric moistening display 101, as shown in Figure 6, comprising: first substrate 8, second substrate 1, the first electrode 7, the second electrode 2, insulation course 3, pixel wall 4, first fluid 5 and second fluid 6; The second electrode 2 is arranged on second substrate 1, insulation course 3 is arranged on the second electrode 2, pixel wall 4 is arranged on insulation course 3, first fluid 5 is filled between every two adjacent pixel wall, first fluid 5 is light tight, and immiscible with second fluid 6, second fluid 6 printing opacities also have electric conductivity or polarity, and 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 comprises voltage applying unit 20, and voltage applying unit 20 is connected with the second electrode 2 with the first electrode 7.
As shown in Figure 7, voltage applying unit 20 is at the first predetermined amount of time t
1between introversive the first electrode 7 and the second electrode 5, apply the first voltage V
1.
At the first predetermined amount of time t
1after end, voltage applying unit 20 is at the second predetermined amount of time t
2-t
1between inherent the first electrode 7 and the second electrode 5, apply the dynamic electric voltage that a magnitude of voltage increases progressively, and the magnitude of voltage of dynamic electric voltage is at the second predetermined amount of time t
2-t
1during end, be increased to second voltage V
2.
At the second predetermined amount of time t
2-t
1after end, voltage applying unit 20 applies second voltage V between the first electrode 5 and the second electrode 5
2.
Further, in an embodiment of the present invention, at the second predetermined amount of time t
2-t
1in, the magnitude of voltage of dynamic electric voltage is from the first voltage V
1be incremented to gradually second voltage V
2.
Wherein, the waveform shape of dynamic electric voltage is oblique line formula rising waveform, parabolic rising waveform or circular arc type rising waveform.
Preferably, the waveform shape of dynamic electric voltage is oblique line formula rising waveform.
Concrete, the circuit that can consist of discrete components such as resistance and electric capacity obtains oblique line formula rising waveform, parabolic rising waveform or the circular arc type rising waveform in dynamic electric voltage waveform.
Because the embodiment of the present invention is by the first voltage V being added between the first electrode and the second electrode
1be incremented to gradually second voltage V
2although the speed that voltage increases slows down relatively, but the response speed to electric moistening display does not have too much influence, but make the motion of the ink between the first electrode and the second electrode more stable, make ink easier be contracted in a jiao of pixel wall, as shown in Figure 8, further make the bright light rays 11 reflecting increase, thereby cause the rising of overall brightness.
As shown in Figure 9, for electric moistening display part being applied in the dynamic electric voltage that increases according to different speed and prior art the display brightness that electric moistening display is applied after the voltage that moment increases, compare.Its orbicular spot is for applying the display brightness of the voltage of moment increase to electric moistening display, side's point is for applying the display brightness of the dynamic electric voltage increasing according to friction speed to electric moistening display part in the present invention, from figure, can show that adopting the present invention is that the brightness of the electric moistening display that provides of embodiment is obviously bright than prior art, and when the speed of working as voltage rising is slower, display brightness is brighter.
Further, in other embodiments of the invention, refer to Figure 10, voltage applying unit is t in the first predetermined amount of time
1between the first electrode 7 and the second electrode 5, apply the first voltage V
1.
At the first predetermined amount of time t
1after end, voltage applying unit 20 applies higher than the first voltage V between the first electrode 7 and the second electrode 5
1threshold voltage V
3, and at the second predetermined amount of time t
2-t
1inside apply from threshold voltage V
3be incremented to gradually second voltage V
2dynamic electric voltage.
At the second predetermined amount of time t
2-t
1after end, voltage applying unit 20 applies second voltage V between the first electrode 7 and the second electrode 5
2.
First the embodiment of the present invention suddenlys change the first voltage instantaneous to threshold voltage, and then threshold voltage is incremented to second voltage gradually, compare the speed that voltage increases that promoted with above-described embodiment, therefore promoted the response speed of electric moistening display, also make the motion of ink more stable simultaneously, make ink easier be contracted in a jiao of pixel compartments, further make the bright light rays reflecting increase, thereby cause the rising of overall brightness.
Another kind of embodiment of the present invention provides the driving method of electric moistening display in a kind of above-described embodiment, comprises the following steps:
Voltage applying unit 20 is at the first predetermined amount of time t
1between inherent the first electrode 7 and the second electrode 5, apply the first voltage V
1.
At the first predetermined amount of time t
1after end, voltage applying unit 20 is applied to the second predetermined amount of time t
2-t
1between inherent the first electrode 7 and the second electrode 5, apply the dynamic electric voltage that a magnitude of voltage increases progressively, and the magnitude of voltage of dynamic electric voltage is at the second predetermined amount of time t
2-t
1during end, be increased to second voltage V
2.
At the second predetermined amount of time t
2-t
1after end, voltage applying unit 20 applies second voltage V between the first electrode 7 and the second electrode 5
2.
Further, in an embodiment of the present invention, at the second predetermined amount of time t
2-t
1in, the magnitude of voltage of dynamic electric voltage is from the first voltage V
1be incremented to gradually second voltage V
2.
Further, in the another kind of embodiment of the present invention, at the second predetermined amount of time t
2-t
1in, the magnitude of voltage of dynamic electric voltage is from being greater than the first voltage V
1threshold voltage V
3be incremented to gradually second voltage V
2.
Electric moistening display provided by the invention and driving method thereof, compared with prior art, the driving voltage of electric moistening display is not unexpected rising, but first moment is elevated to threshold voltage, and then adopt the voltage increasing gradually to drive electric moistening display part, electric field force between electrode can " not torn first fluid " as droplet, make the stable mass motion of first fluid to one jiao of pixel compartments, the middle effective area of each pixel compartments is increased, thereby improve the display comparison degree of pixel integral body, do not reduce response speed simultaneously, solved the problem that makes ink splitting cause overall brightness to decline owing to applying the voltage of moment rising between electrode that exists in prior art.
It should be noted that, in the present invention, the structure of electric moistening display and driving method are equally also applicable to electric wet-type display.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the present invention by the definite scope of patent protection of submitted to claims.
Claims (10)
1. an electric moistening display, comprising: the first electrode, the second electrode, insulation course, a plurality of pixel wall, first fluid and second fluid;
Described insulation course is arranged on described the second electrode, described a plurality of pixel wall is arranged on described insulation course, described first fluid is filled between every two adjacent described pixel wall, 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 is filled between described first fluid and described the first electrode;
It is characterized in that, described electric moistening display also comprises voltage applying unit, and described voltage applying unit is connected with described the second electrode with described the first electrode;
Described voltage applying unit applies the first voltage in the first predetermined amount of time between described the first electrode and described the second electrode;
After described the first predetermined amount of time finishes, described voltage applying unit applies the dynamic electric voltage that a magnitude of voltage increases progressively in the second predetermined amount of time between described the first electrode and described the second electrode, and the magnitude of voltage of described dynamic electric voltage is increased to second voltage when described the second predetermined amount of time finishes;
After described the second predetermined amount of time finishes, described voltage applying unit applies described second voltage between described the first electrode and described the second electrode.
2. electric moistening display as claimed in claim 1, is characterized in that, in described the second predetermined amount of time, the magnitude of voltage of described dynamic electric voltage is to be incremented to gradually described second voltage from described the first voltage.
3. electric moistening display as claimed in claim 1, is characterized in that, in described the second predetermined amount of time, the magnitude of voltage of described dynamic electric voltage is to be incremented to gradually described second voltage from being greater than the threshold voltage of described the first voltage.
4. electric moistening display as claimed in claim 2 or claim 3, is characterized in that, the waveform of described dynamic electric voltage is oblique line formula rising waveform.
5. electric moistening display as claimed in claim 2 or claim 3, is characterized in that, the waveform of described dynamic electric voltage is parabolic rising waveform or circular arc type rising waveform.
6. a driving method for the electric moistening display based on as described in claim 1 to 5 any one, is characterized in that, comprises the following steps:
Described voltage applying unit applies the first voltage in the first predetermined amount of time between described the first electrode and described the second electrode;
After described the first predetermined amount of time finishes, described voltage applying unit applies the dynamic electric voltage that a magnitude of voltage increases progressively in the second predetermined amount of time between described the first electrode and described the second electrode, and the magnitude of voltage of described dynamic electric voltage is increased to second voltage when described the second predetermined amount of time finishes;
After described the second predetermined amount of time finishes, described voltage applying unit applies described second voltage between described the first electrode and described the second electrode.
7. driving method as claimed in claim 6, is characterized in that, in described the second predetermined amount of time, the magnitude of voltage of described dynamic electric voltage is to be incremented to gradually described second voltage from described the first voltage.
8. driving method as claimed in claim 6, is characterized in that, in described the second predetermined amount of time, the magnitude of voltage of described dynamic electric voltage is to be incremented to gradually described second voltage from being greater than the threshold voltage of described the first voltage.
9. driving method as claimed in claim 7 or 8, is characterized in that, the waveform of described dynamic electric voltage is oblique line formula rising waveform.
10. driving method as claimed in claim 7 or 8, is characterized in that, the waveform of described dynamic electric voltage is parabolic rising waveform or circular arc type rising waveform.
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| CN201410203529.3A CN103984088B (en) | 2014-05-14 | 2014-05-14 | A kind of electric moistening display and driving method thereof |
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|---|---|---|---|
| CN201410203529.3A CN103984088B (en) | 2014-05-14 | 2014-05-14 | A kind of electric moistening display and driving method thereof |
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| CN103984088B CN103984088B (en) | 2016-09-28 |
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Cited By (11)
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| CN104867460A (en) * | 2015-05-20 | 2015-08-26 | 华南师范大学 | Gradation display modulating method for electrowetting display |
| CN106486071A (en) * | 2016-12-23 | 2017-03-08 | 福州大学 | A kind of electric moistening display non-linear voltage amplitude gray modulation method and its device |
| CN107111988A (en) * | 2014-12-29 | 2017-08-29 | 亚马逊技术股份有限公司 | Reduce visual artifact and reduce the power consumption in electric moistening display |
| CN107367835A (en) * | 2017-08-08 | 2017-11-21 | 华南师范大学 | A kind of electric moistening 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 |
| CN108140351A (en) * | 2015-09-28 | 2018-06-08 | 亚马逊科技公司 | Improve the brightness of electric moistening display and reduce its power consumption |
| CN109300437A (en) * | 2018-11-07 | 2019-02-01 | 深圳市国华光电科技有限公司 | A kind of electric moistening display part driving method and system |
| CN109782476A (en) * | 2019-03-13 | 2019-05-21 | 京东方科技集团股份有限公司 | A kind of reflective display and preparation 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 |
| US10991322B2 (en) | 2017-03-09 | 2021-04-27 | Academy Of Shenzhen Guohua Optoelectronics | Bistable driving method for electrowetting display and related electrowetting display |
| CN114527563A (en) * | 2020-11-23 | 2022-05-24 | 华为技术有限公司 | Liquid light ring control method and device |
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| CN106486071A (en) * | 2016-12-23 | 2017-03-08 | 福州大学 | A kind of electric moistening display non-linear voltage amplitude gray modulation method and its device |
| 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 |
| US10991322B2 (en) | 2017-03-09 | 2021-04-27 | Academy Of Shenzhen Guohua Optoelectronics | Bistable driving method for electrowetting display and related electrowetting display |
| CN107367835B (en) * | 2017-08-08 | 2020-06-16 | 华南师范大学 | Electrowetting display and preparation method thereof |
| CN107367835A (en) * | 2017-08-08 | 2017-11-21 | 华南师范大学 | A kind of electric moistening 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 |
| CN109300437A (en) * | 2018-11-07 | 2019-02-01 | 深圳市国华光电科技有限公司 | A kind of electric moistening display part driving method and system |
| CN109782476A (en) * | 2019-03-13 | 2019-05-21 | 京东方科技集团股份有限公司 | A kind of reflective display and preparation 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 |
| CN114527563A (en) * | 2020-11-23 | 2022-05-24 | 华为技术有限公司 | Liquid light ring control method and device |
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