CN203259713U - Flexible electrowetting display apparatus - Google Patents
Flexible electrowetting display apparatus Download PDFInfo
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- CN203259713U CN203259713U CN 201320302568 CN201320302568U CN203259713U CN 203259713 U CN203259713 U CN 203259713U CN 201320302568 CN201320302568 CN 201320302568 CN 201320302568 U CN201320302568 U CN 201320302568U CN 203259713 U CN203259713 U CN 203259713U
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- infrabasal plate
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Abstract
The utility model discloses a flexible electrowetting display apparatus, comprising an upper substrate, a lower substrate, N fluid cavities separated by cavity walls and positioned between the upper substrate and a lower substrate. Each fluid cavity is filled with a polarity conductive liquid and a nonpolar oily liquid which are immiscible. The upper substrate and the lower substrate are of flexible materials. One side of the upper substrate, which is close to the fluid cavities, is provided with a hydrophobic dielectric layer. The lower substrate is provided with super-hydrophobic areas, and hydrophilic areas or super-hydrophilic areas corresponding to the fluid cavities. For each fluid cavity, surface wettability differences between the super-hydrophobic area and the super-hydrophilic area or the hydrophilic area are employed, and the polarity conductive liquid can be firmly attached in the super-hydrophilic area or the hydrophilic area, and thus the position of the polarity conductive liquid when the substrates are deformed can be kept, the relative positions of the polarity conductive liquid and the nonpolar oily liquid are stably controlled without using solid members, thereby achieving a function of flexible electrowetting display.
Description
Technical field
The utility model relates to a kind of electric moisten display device, particularly a kind of flexible electrical moisten display device.
Background technology
The characteristics such as electrowetting technology is the novel micro-fluidic technologies of research of being used widely in recent years, and it has low in energy consumption, fast response time, device architecture is simple, volume is little.Also have simultaneously the advantage at wide visual angle based on the new display of electrowetting technology, possess excellent using value.The electric moistening display structure of main flow has comprised hydrophobicity insulation course, transparency electrode and fluid cavity at present.Wherein comprised polarity conducting liquid and nonpolar oiliness liquid in the fluid cavity, and these two kinds of liquid must satisfy some other requirement, for example: low melting point; Suitable viscosity; Good electric wettability, the density that especially will satisfy unmixing and approach as far as possible.Adjacent fluid chambers is separated by the chamber wall usually, and the fluid in each cavity is controlled separately.But present propose various based on the wetting display device model of electricity, all only possesses the quiescent operation performance, when being in machinery, rocks by device, especially in the situation of parts generation deformation, owing to do not possess the mechanical part of confined liquid relative position in the fluid cavity, the flowability of liquid can make two kinds of liquid generation relative displacements, thereby has affected real-time display effect, has limited electrowetting technology and has shown the application in field such as flexibility bent, wearing.
Summary of the invention
Goal of the invention: technical problem to be solved in the utility model provides a kind of flexible electrical moisten display device, this device can make immiscible two kinds of liquid accurate replied enlargement and contraction of locating and realizing polar liquid in bent flexible cavity in the electric moisten display device, and does not need to prepare extra device component.
Technical scheme: a kind of flexible electrical moisten display device comprises upper substrate, infrabasal plate and N the fluid cavity that is separated by the chamber wall between upper and lower base plate; Fill immiscible polarity conducting liquid and nonpolar oiliness liquid in described each fluid cavity; Described upper substrate and infrabasal plate are flexible material; Described upper substrate is provided with the hydrophobic medium layer near fluid cavity one side; Be provided with on infrabasal plate corresponding to described each fluid cavity with the water droplet contact angle greater than 150 ° super-hydrophobic zone, with the water droplet contact angle less than 90 ° hydrophilic region or with the super hydrophilic region of water droplet contact angle less than 10 °; Be provided with the first electrode, the second electrode between the hydrophobic medium layer that described each fluid cavity is corresponding and the upper substrate; Described the first electrode is with respect to infrabasal plate hydrophilic region or super hydrophilic region setting; Wherein, N is the natural number greater than zero.
As optimal way of the present utility model, described upper substrate and infrabasal plate are polyester sheet.
As improvement of the present utility model, the highly reflective material of micron order or nanoscale structures is adopted in described super-hydrophobic zone.
As further improvement of the utility model, described the first electrode, the second electrode are transparency electrode.
Beneficial effect: compared with prior art, the fluid cavity of flexible electrical moisten display device of the present utility model utilizes the surface wettability difference of super-hydrophobic zone and super hydrophilic or hydrophilic region, because this super hydrophilic or hydrophilic region has strong adhesion to the polarity conducting liquid, in substrate generation deformation process, can keep the location to the polarity conducting liquid, in the situation by solid components not, the relative position of stable control polarity conducting liquid and nonpolar oiliness liquid.Therefore, when adopting flexible base, board to realize bent, the flexible display device dressed, the show state of device can not be subject to the impact of deformation.Upper substrate and infrabasal plate adopt polyester sheet, and polyester sheet has greatly reduced and realized the required cost of flexible display device as general available material; Super-hydrophobic zone adopts the highly reflective material of micron order or nanoscale structures then can realize reflective flexible Presentation Function; The first transparent electrode and the second electrode can improve visible light in the transmissivity of upper substrate.
Description of drawings
Diagrammatic cross-section when Fig. 1 is the single fluid cavity OFF state of the utility model flexible electrical moisten display device;
Fig. 2 is the single fluid cavity lower substrate structure of the utility model flexible electrical moisten display device figure;
Diagrammatic cross-section when Fig. 3 is the single fluid cavity ON state of the utility model flexible electrical moisten display device.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
Diagrammatic cross-section when being illustrated in figure 1 as the single fluid cavity OFF state of flexible electrical moisten display device, a kind of flexible electrical moisten display device comprises upper substrate 11, infrabasal plate 12 and N the fluid cavity 10 that is separated by chamber wall 15 between upper and lower base plate.Fill immiscible polarity conducting liquid 13 and nonpolar oiliness liquid 14 in each fluid cavity.Wherein, upper substrate 11 and infrabasal plate 12 are flexible material.Upper substrate 11 is provided with hydrophobic medium layer 18 near a side of fluid cavity 10, and the material of this hydrophobic medium layer 18 can be fluoropolymer, such as teflon.Be provided with on the infrabasal plate 12 of each fluid cavity 10 correspondence with the water droplet contact angle greater than 150 ° super-hydrophobic regional 19, with the water droplet contact angle less than 90.Hydrophilic region 20; Be provided with the first electrode 16, the second electrode 17 with fluid cavity 10 interior liquid indirect contacts between the hydrophobic medium layer 18 of each fluid cavity 10 correspondence and the upper substrate 11; The first electrode 16 arranges with respect to infrabasal plate hydrophilic region or super hydrophilic region 20, and shape is comparatively long and narrow, its width dimensions is less than the size of infrabasal plate hydrophilic region or super hydrophilic region 20, the second electrode 17 is polygonal electrode, be distributed in all places except the first electrode 16, the second electrode 17 and the first electrode 16 spacings are very little.Electrode arranges like this and has guaranteed on the one hand the indirect contact of the first electrode 16 with polarity conducting liquid 13, so that the first electrode 16 does not occupy the whole top of polarity conducting liquid 13, reserve a part of area and make the second electrode 17 and the 13 top indirect contacts of polarity conducting liquid on the other hand.Wherein, N is the natural number greater than zero.Hydrophilic region 20 can also be by substituting with the super hydrophilic region 20 of water droplet contact angle less than 10 °.Wherein, super-hydrophobic regional 19 for the micro nano structure made by fluoropolymer or utilize fluoropolymer to carry out the common micro nano structure of finishing; Made by hydrophilic material less than 90 ° hydrophilic region 20 with the water droplet contact angle; With super hydrophilic area the micro nano structure for by water wetted material made of water droplet contact angle less than 10 °.
This upper substrate 11 adopts the requirement of materials to comprise with infrabasal plate 12: high, heat-resisting cold-resistant, the oil resistance of physical strength, water tolerance, the good transparency and bending property, utilize polyester sheet in the present embodiment.This chamber wall 15 is made by transparent material, plays a supporting role in the middle of upper substrate 11 and infrabasal plate 12.This first electrode 16 and the second electrode 17 are made by the electrically conducting transparent material, such as tin indium oxide.The first electrode 16 and the second electrode 17 play respectively ground connection and apply the effect that drives signal in the present embodiment, and both also interchangeable uses namely apply the driving signal to electrode 16, and electrode 17 is applied ground signalling.This hydrophobic medium layer 18 is made by transparent material, such as the transparent amorphous fluoropolymer of single layer of hydrophobic, perhaps at transparent inorganic or this fluoropolymer of organic dielectric layer surface deposition, utilizes AF1600 in the present embodiment.This hydrophobic medium layer covers this upper substrate 11 surfaces.
The vertical view of infrabasal plate 12 in the fluid cavity 10 such as Fig. 2.This hydrophilic region or super hydrophilic region 20 are in the centre of infrabasal plate, and super-hydrophobic regional 19 have covered the every other area on infrabasal plate 12 surfaces.This polarity conducting liquid 13 is the conducting liquids such as water, salt solusion because the difference of super hydrophilic region 20 and super-hydrophobic regional 19 aspect wellability, polarity conducting liquid 13 by stable maintenance at super hydrophilic region 20.This nonpolar oiliness liquid 14 is filled in fluid cavity 10 inner other spaces.Two kinds of fluids do not dissolve each other, and make polarity conducting liquid 13 opaque by dyeing.When this first electrode 16 and the second electrode 17 did not apply voltage, this polarity conducting liquid 13 maintained original state, and pigmented section effective area ratio is less.
As shown in Figure 3, when the single fluid cavity of electric moistening display was in ON state, these the first electrode 16, the second electrodes 17 applied respectively ground connection and drive after the signal, the polarity conducting liquid 13 of indirect contact are arranged at upper substrate 11 surface spreadings with the first electrode 16.Polarity conducting liquid 13 and nonpolar oiliness liquid 14 approximate stacked distribution, pigmented section effective area ratio is near 100%.
Compared with prior art, the infrabasal plate 12 of flexible electrical moisten display device fluid cavity 10 of the present utility model comprises super-hydrophobic regional 19, super hydrophilic or hydrophilic region 20.This super-hydrophobic regional 19 has very strong hydrophobe, and polarity conducting liquid 13 can't be stablized and rests on its surface, and super hydrophilic or hydrophilic region 20 has extremely strong water wettability, and polarity conducting liquid 13 has very strong adhesion with its surface.This adhesion makes polarity conducting liquid 13 such as base plate deformation, and machinery rocks etc. still to stablize in the situation and sticks to infrabasal plate 12 surfaces.Therefore, when adopting flexible base, board to realize bent, the flexible display device dressed, the show state of device can not be subject to the impact of deformation.And this super shape hydrophilic or hydrophilic region 20 of infrabasal plate can be arbitrary shape in the utility model, and can be positioned at the optional position of fluid cavity 10 infrabasal plates 12.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. flexible electrical moisten display device comprises upper substrate, infrabasal plate and N the fluid cavity that is separated by the chamber wall between upper and lower base plate; Fill immiscible polarity conducting liquid and nonpolar oiliness liquid in described each fluid cavity; It is characterized in that: described upper substrate and infrabasal plate are flexible material; Described upper substrate is provided with the hydrophobic medium layer near fluid cavity one side; Be provided with on infrabasal plate corresponding to described each fluid cavity with the water droplet contact angle greater than 150 ° super-hydrophobic zone, with the water droplet contact angle less than 90 ° hydrophilic region or with the super hydrophilic region of water droplet contact angle less than 10 °; Be provided with the first electrode, the second electrode between the hydrophobic medium layer that described each fluid cavity is corresponding and the upper substrate; Described the first electrode is with respect to infrabasal plate hydrophilic region or super hydrophilic region setting; Wherein, N is the natural number greater than zero.
2. a kind of flexible electrical moisten display device according to claim 1, it is characterized in that: described upper substrate and infrabasal plate are polyester sheet.
3. a kind of flexible electrical moisten display device according to claim 1 is characterized in that: the highly reflective material of described super-hydrophobic zone employing micron order or nanoscale structures.
4. a kind of flexible electrical moisten display device according to claim 1, it is characterized in that: described the first electrode, the second electrode are transparency electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302568 CN203259713U (en) | 2013-05-28 | 2013-05-28 | Flexible electrowetting display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302568 CN203259713U (en) | 2013-05-28 | 2013-05-28 | Flexible electrowetting display apparatus |
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| CN203259713U true CN203259713U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320302568 Expired - Fee Related CN203259713U (en) | 2013-05-28 | 2013-05-28 | Flexible electrowetting display apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257445A (en) * | 2013-05-28 | 2013-08-21 | 东南大学 | Flexible electric moisturizing display device |
| CN104614852A (en) * | 2015-02-04 | 2015-05-13 | 东南大学 | Optical scanning device and application method thereof |
| CN106886090A (en) * | 2017-01-25 | 2017-06-23 | 东南大学 | A kind of miniature dynamic ager |
-
2013
- 2013-05-28 CN CN 201320302568 patent/CN203259713U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257445A (en) * | 2013-05-28 | 2013-08-21 | 东南大学 | Flexible electric moisturizing display device |
| CN103257445B (en) * | 2013-05-28 | 2016-01-13 | 东南大学 | A kind of flexible electrical moisten display device |
| CN104614852A (en) * | 2015-02-04 | 2015-05-13 | 东南大学 | Optical scanning device and application method thereof |
| CN106886090A (en) * | 2017-01-25 | 2017-06-23 | 东南大学 | A kind of miniature dynamic ager |
| CN106886090B (en) * | 2017-01-25 | 2020-04-21 | 东南大学 | Miniature dynamic color matching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20160528 |