CN105093519A - Electrowetting display panel, display device, and display panel display method - Google Patents
Electrowetting display panel, display device, and display panel display method Download PDFInfo
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- CN105093519A CN105093519A CN201510493091.1A CN201510493091A CN105093519A CN 105093519 A CN105093519 A CN 105093519A CN 201510493091 A CN201510493091 A CN 201510493091A CN 105093519 A CN105093519 A CN 105093519A
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- 238000000034 method Methods 0.000 title abstract description 4
- 239000012530 fluid Substances 0.000 claims abstract description 65
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims description 8
- 230000008033 biological extinction Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 230000031700 light absorption Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention discloses an electrowetting display panel, which comprises an upper substrate, a common electrode arranged on the upper substrate, a lower substrate arranged oppositely to the upper substrate, a hydrophobic layer arranged on the lower substrate, multiple pixel walls arranged on the hydrophobic layer, multiple pixel units defined by crossing of the multiple pixel walls, and multiple pixel electrodes located between the lower substrate and the hydrophobic layer and corresponding to the multiple pixel units, wherein each pixel unit comprises a light-transmitting first fluid filling the gap between the adjacent pixel walls, and a light-absorbing second fluid filling the gap between the first fluid and the hydrophobic layer, and the second fluid and the first fluid are mutually insoluble; and each pixel electrode comprises a first pixel sub electrode and a second pixel sub electrode which are mutually insulated. The invention also discloses a display device comprising the electrowetting display panel and the electrowetting display panel display method. The electrowetting display panel is simply designed, the electrowetting display panel processing process is simplified, and the panel response speed is improved.
Description
Technical field
The present invention relates to field of display, particularly relate to the display packing of a kind of Electrowetting display panel, display device and display panel.
Background technology
Electric moistening display is the new technology being applied in display in recent years, its because of have low power consumption, wide viewing angle and high response speed feature and extremely study and pay attention to.
General Electrowetting display panel structure as shown in Figure 1, in order to start gesture to display panel one, being made rough pattern electrode 105, being made electric field uneven distribution.Substrate does a series of activities such as gluing, exposure, development makes substrate surface form specific pattern, make work flow more complicated, and this special surface topography causes adverse influence to follow-up processing.Another kind of Electrowetting display panel as shown in Figure 2 again, comprise upper substrate 101, the infrabasal plate 102 relative with described upper substrate, the public electrode 103 arranged between upper and lower substrate, hydrophobic dielectric layer 104, insulation course 110, pixel electrode 105, and be arranged at least two barricades 106 on hydrophobic dielectric layer 104; Described at least two barricades 106 limit a pixel region.Ink 107 and polar liquid 108 is filled with in described pixel region, when the ink of Electrowetting display panel is black ink, when not powering up, black ink 107 spreads on the hydrophobic dielectric layer 104 of this pixel region, the light of surround lighting or backlight incides black oil reservoir and is absorbed, and thus shows black state; After powering up, hydrophobic dielectric layer 104 creates CHARGE DISTRIBUTION, make the affinity that had between water and hydrophobic nature dielectric layer and order about the position that ink 107 is expressed to corner barricade 106 place of pixel region.But when pixel changes from ON state to OFF state, general Electrowetting display panel is by removing the voltage on electrode, and make second fluid automatically revert to OFF state, the time is long, and the response speed of display panel is slow.
Summary of the invention
The process in order to solve above-mentioned the deficiencies in the prior art, the invention provides a kind of Electrowetting display panel, its structural design is simple, simplifying this Electrowetting display panel, and improve the response speed of this panel.Present invention also offers and comprise the display device of this Electrowetting display panel and the display packing of this Electrowetting display panel.
Technical matters to be solved by this invention is achieved by the following technical programs:
A kind of Electrowetting display panel, comprising:
Upper substrate and the public electrode be arranged on upper substrate;
The infrabasal plate be oppositely arranged with upper substrate;
Be arranged on the hydrophobic layer on infrabasal plate;
Be arranged on the multiple pixel wall on hydrophobic layer;
Intersected by multiple pixel wall and the multiple pixel cells defined, each pixel cell comprises:
Be filled in the first fluid of the printing opacity between neighbor wall;
Be filled in the second fluid between first fluid and hydrophobic layer, it is extinction fluid, and immiscible with first fluid;
Multiple pixel electrodes corresponding with multiple pixel cell between infrabasal plate and hydrophobic layer, each pixel electrode comprises the first pixel sub-electrode and the second pixel sub-electrode of mutually insulated.
Further, described second fluid is lighttight fluent meterial.
Further, described first fluid is conduction light-transmissive fluid; Described second fluid is insulation extinction liquid.
Further, described first pixel sub-electrode and/or the second pixel sub-electrode are reflection or transparency electrode.
Further, described first pixel sub-electrode and/or the second pixel sub-electrode are made up of IZO or ITO material.
Further, the height of described pixel wall is not less than the thickness of second fluid under its flat presentation.
A kind of display device, comprises arbitrary above-mentioned Electrowetting display panel.
Further, the on-off element that be electrically connected corresponding to each pixel electrode is also comprised.
Further, described on-off element is TFT, and the first pixel sub-electrode or the second pixel sub-electrode drain with TFT or source electrode is connected, and the second pixel sub-electrode or the first pixel sub-electrode are connected with TFT grid.
A kind of display packing of Electrowetting display panel, when display pixel, apply contrary voltage at the first pixel sub-electrode and the second pixel sub-electrode respectively, then second fluid is gathered to the first pixel sub-electrode or the flowing of the second pixel sub-electrode direction, makes the pixel transmittance that first fluid is corresponding; When closing pixel, the first pixel sub-electrode that light transmission part is corresponding or the second pixel sub-electrode do not have voltage, and the second pixel sub-electrode corresponding with second fluid or the first pixel sub-electrode apply voltage, make second fluid accelerate trickling and come in its flat presentation.
The present invention has following beneficial effect: this Electrowetting display panel is by the particular design to the pixel electrode of each pixel cell and energising display packing, electric field is distributed as expected, thus make the driving of fluid easier, improve the response speed of Electrowetting display panel, solve existing Electrowetting display panel when pixel closed by needs, by removing the voltage on pixel electrode, second fluid is made automatically to revert to OFF state (i.e. its flat presentation), return time is long, makes the problem that its response speed is slow; This Electrowetting display panel structure simple designs, makes its work flow simplify.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of Electrowetting display panel of prior art;
Fig. 2 is the schematic diagram of the another kind of Electrowetting display panel of prior art;
Fig. 3 is the schematic diagram of Electrowetting display panel one embodiment of the present invention;
Fig. 4 is the schematic diagram after the pressurization of the pixel cell of Electrowetting display panel one shown in Fig. 3;
Fig. 5 is schematic diagram when Electrowetting display panel described in Fig. 4 one pixel cell is closed;
Fig. 6 is another schematic diagram when Electrowetting display panel described in Fig. 4 one pixel cell is closed;
The pixel electrode floor map that Fig. 7 is Electrowetting display panel shown in Fig. 3.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail.
Refer to Fig. 3, which show the schematic diagram of a kind of embodiment of Electrowetting display panel of the present invention.This Electrowetting display panel comprises upper substrate 1, the infrabasal plate 2 be oppositely arranged with upper substrate 1, be arranged on the hydrophobic layer 3 between upper and lower base plate 2, multiple pixel wall 4, multiple pixel cell, between hydrophobic layer 3 with infrabasal plate 2 and the multiple pixel electrodes 53 corresponding with multiple pixel cell, the public electrode 54 be positioned on upper substrate.
Described multiple pixel electrode 53 is arranged on described infrabasal plate 2 in rectangular, and this pixel electrode 53 is preferably obtained by transparent conductive material, as tin indium oxide (ITO) or indium zinc oxide (IZO).Pixel electrode 53 described in each comprises the first pixel sub-electrode 531 of mutually insulated and the second pixel sub-electrode 532(as shown in Figure 7), different voltage can be applied according to actual conditions.The large I of the first pixel sub-electrode 531 and the second pixel sub-electrode 532 requires specific design according to pixel cell aperture opening ratio; The second pixel sub-electrode 532 that second fluid 52 gathers rear correspondence is preferably distributed in on-off element, near the (not shown) of TFT silicon island, can improve pixel cell aperture opening ratio.
It is preferably that trellis is arranged on described hydrophobic layer 3 that described multiple pixel wall 4 is intersected, and the unit that adjacent pixel wall 4 defines is defined as pixel cell.The making material of described hydrophobic layer 3 comprises teflon, fluororesin or has little, the antiacid alkali resistant of surface tension according to P-xylene etc., resist the material of the performance of various organic solvent.The first fluid 51 that each pixel cell described comprises the printing opacity be filled between neighbor wall 4 and the second fluid 52 be filled between first fluid 51 and hydrophobic layer 3, this second fluid 52 is extinction fluid, and immiscible with first fluid 51; Wherein, preferably but do not limit ground, described first fluid 51 can be conduction light-transmissive fluid; Described second fluid 52 can be insulation extinction flowing liquid, and as the alkane of opaque ink or similar hexadecane, the present embodiment is preferably ink.
The height of described pixel wall 4 is not less than the thickness of second fluid 52 under its flat presentation, makes described second fluid 52 pixel wall 4 under its flat presentation can separate the second fluid 52 of different pixels unit.Pixel wall 4 is preferably made up of water wetted material.
When not applying any voltage to this Electrowetting display panel, this first fluid 51 and second fluid 52 are lamination setting, because this second fluid 52 is ink, therefore this Electrowetting display panel display ink colors.
When applying opposite voltage to the first pixel sub-electrode 531 and the second pixel sub-electrode 532, due to the existence of the second pixel sub-electrode 532 reverse voltage, make much smaller than the first pixel sub-electrode 531 of its comprehensive electric field, under this electric field action, first fluid 51 drives second fluid 52 to be more prone to gather to the second pixel sub-electrode 532 direction flowing fast, thus make this pixel cell printing opacity, as shown in Figure 4; When this pixel cell closed by needs, first pixel sub-electrode 531 corresponding to light transmission part does not have electric signal, namely its voltage is removed, a suitable voltage is applied to the second pixel sub-electrode 532 corresponding to second fluid 52, second fluid 52 can be forced to trickle faster to come in its flat presentation, substantially reduce the return time of second fluid 52, thus increase the response speed of Electrowetting display panel, as shown in Figure 5.
As the improvement of the present embodiment, more black when being in OFF state to make pixel cell, to increase contrast, can arrange a light-absorption layer 55 in the region of the first pixel sub-electrode 531 or the second pixel sub-electrode 532 correspondence, it is near infrabasal plate 2.Concrete enforcement as shown in Figure 6, one deck light-absorption layer 55 is made in the second pixel sub-electrode 532 corresponding region, then when this pixel cell needs to close, first pixel sub-electrode 531 does not have electric signal, and the second pixel sub-electrode 532 applies certain voltage, the thickness of second fluid 52 in the first pixel sub-electrode corresponding region is increased, acts in conjunction with light-absorption layer 55, thus make pixel cell more black when OFF state, add contrast.
As the improvement of the present embodiment, the pixel electrode 53 of this Electrowetting display panel can be reflecting electrode, namely described first pixel sub-electrode 531 and/or the second pixel sub-electrode 532 are reflecting electrode, and it can be the metal material with high reflectance, as silver, platinum, chromium, Mo and Mo alloys etc.
Present invention also offers a kind of display device, it comprises above-mentioned Electrowetting display panel and the on-off element that be electrically connected corresponding to each pixel electrode, controlled the voltage condition of the first pixel sub-electrode and the second pixel sub-electrode by on-off element, and then control first fluid and the distribution of second fluid on hydrophobic layer.Described on-off element preferred film field effect transistor TFT, the first pixel sub-electrode or the second pixel sub-electrode drain with TFT or source electrode is connected, and the second pixel sub-electrode or the first pixel sub-electrode are connected with TFT grid.
Invention further provides a kind of display packing of Electrowetting display panel, when needs display pixel, contrary voltage is applied at the first pixel sub-electrode and the second pixel sub-electrode, due to the existence of a wherein pixel sub-electrode reverse voltage, make much smaller than another pixel sub-electrode corresponding region of the comprehensive electric field of its corresponding region, under this electric field action, the sub-electrode direction flowing that second fluid is more prone to comprehensive electric field is little is gathered, and makes the pixel transmittance that first fluid is corresponding; When pixel closed by needs, a pixel sub-electrode corresponding to light transmission part does not have voltage, namely removes its voltage, another pixel sub-electrode corresponding with second fluid applies suitable voltage, under the effect of electric field, make second fluid revert to OFF state fast, namely trickling is come in its flat presentation.The display packing of this Electrowetting display panel is by the voltage signal contrary or different with the connection of the second pixel sub-electrode to the first pixel sub-electrode of two mutually insulateds, not only driving voltage is lower, and be easy to fast realize pixel transmittance display and closed condition, namely second fluid shortens greatly from sprawling the time of shrinking state or sprawling from contraction state, improves the response speed of Electrowetting display panel.
The above embodiment only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.
Claims (10)
1. an Electrowetting display panel, is characterized in that, comprising:
Upper substrate and the public electrode be arranged on upper substrate;
The infrabasal plate be oppositely arranged with upper substrate;
Be arranged on the hydrophobic layer on infrabasal plate;
Be arranged on the multiple pixel wall on hydrophobic layer;
Intersected by multiple pixel wall and the multiple pixel cells defined, each pixel cell comprises:
Be filled in the first fluid of the printing opacity between neighbor wall;
Be filled in the second fluid between first fluid and hydrophobic layer, it is extinction fluid, and immiscible with first fluid;
Multiple pixel electrodes corresponding with multiple pixel cell between infrabasal plate and hydrophobic layer, each pixel electrode comprises the first pixel sub-electrode and the second pixel sub-electrode of mutually insulated.
2. Electrowetting display panel according to claim 1, is characterized in that, described second fluid is lighttight fluent meterial.
3. Electrowetting display panel according to claim 1, is characterized in that, described first fluid is conduction light-transmissive fluid; Described second fluid is insulation extinction liquid.
4. Electrowetting display panel according to claim 1, is characterized in that, described first pixel sub-electrode and/or the second pixel sub-electrode are reflection or transparency electrode.
5. Electrowetting display panel according to claim 1, is characterized in that, described first pixel sub-electrode and/or the second pixel sub-electrode are made up of IZO or ITO material.
6. Electrowetting display panel according to claim 1, is characterized in that, the height of described pixel wall is not less than the thickness of second fluid under its flat presentation.
7. a display device, is characterized in that, comprises the arbitrary described Electrowetting display panel of claim 1 to 6.
8. display device according to claim 7, is characterized in that, also comprises the on-off element that be electrically connected corresponding to each pixel electrode.
9. display device according to claim 8, is characterized in that, described on-off element is TFT, and the first pixel sub-electrode or the second pixel sub-electrode drain with TFT or source electrode is connected, and the second pixel sub-electrode or the first pixel sub-electrode are connected with TFT grid.
10. the display packing of an Electrowetting display panel, be applied to arbitrary described Electrowetting display panel in claim 1 to 6, it is characterized in that, when display pixel, contrary voltage is applied respectively at the first pixel sub-electrode and the second pixel sub-electrode, then second fluid is gathered to the first pixel sub-electrode or the flowing of the second pixel sub-electrode direction, makes the pixel transmittance that first fluid is corresponding; When closing pixel, the first pixel sub-electrode that light transmission part is corresponding or the second pixel sub-electrode do not have voltage, and the second pixel sub-electrode corresponding with second fluid or the first pixel sub-electrode apply voltage, make second fluid accelerate trickling and come in its flat presentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510493091.1A CN105093519A (en) | 2015-08-13 | 2015-08-13 | Electrowetting display panel, display device, and display panel display method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510493091.1A CN105093519A (en) | 2015-08-13 | 2015-08-13 | Electrowetting display panel, display device, and display panel display method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199948A (en) * | 2016-07-06 | 2016-12-07 | 京东方科技集团股份有限公司 | The moistening structure of a kind of electricity, display module and display device |
| CN106773013A (en) * | 2016-11-22 | 2017-05-31 | 华南师范大学 | A kind of electrowetting optics and preparation method |
| CN108572444A (en) * | 2018-04-20 | 2018-09-25 | 深圳市国华光电科技有限公司 | A kind of electric moistening display part and preparation method thereof |
| CN108885379A (en) * | 2016-03-24 | 2018-11-23 | 夏普株式会社 | Electrowetting device and method for manufacturing the electrowetting device |
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