CN102279464A - Electro-wetting display device based on photoluminescence effect - Google Patents
Electro-wetting display device based on photoluminescence effect Download PDFInfo
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- CN102279464A CN102279464A CN 201110211858 CN201110211858A CN102279464A CN 102279464 A CN102279464 A CN 102279464A CN 201110211858 CN201110211858 CN 201110211858 CN 201110211858 A CN201110211858 A CN 201110211858A CN 102279464 A CN102279464 A CN 102279464A
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Abstract
The invention relates to an electro-wetting display device based on a photoluminescence effect. Active light-emitting colourized images and texts are formed by arranging a fluorescent layer or a hydrophobic insulation fluorescence layer between a second substrate and a first fluid and irradiating the fluorescence layer through ultraviolet light, purple light or blue light to generate the photoluminescence effect, therefore, the electro-wetting display device has the advantages of high brightness, more beautiful colour and more bright-coloured colour.
Description
Technical field
The present invention relates to a kind of electric moisten display device, relate in particular to a kind of electric moisten display device based on the photoluminescence effect.
Background technology
The wetting display screen of electricity be in recent years a kind of new technology, because of it has low power consumption, and high response speed and extremely attention.At present, the emphasis direction that the colored electroweting display is researched and developed especially, prior art colored electroweting display mainly contains three kinds, is respectively:
First kind is the pre-filter method.First substrate of display screen is provided with colored filter, and this colored filter comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel is corresponding with transparency electrode.This colored filter surface can be provided with transparent common electrode.
Second kind is dyed layer colour filter method.As Chinese patent (patent documentation publication number: CN101355838A) disclose a kind of electric moistening display that adopts dyed layer colour filter method.In this technical scheme, be provided with dyed layer on the drain insulating layer surface, this dyed layer comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel is corresponding with transparency electrode.
The third is color oil process.In this kind device, first fluid covers the drain insulating layer surface, and thickness is less than the height of partition wall, and material is generally oiliness, and is opaque.This first fluid has three kinds of colors of RGB, and be distributed in this first fluid of the corresponding drain insulating layer of each and sub-pixel surface and have three kinds of colors of RGB respectively.First substrate can be provided with transparent common electrode.
These three kinds of methods all have common drawback: all be that passive reflection shows that so display brightness is low, picture is darker, colour gamut is lower, thereby display effect is bad.
Summary of the invention
The technical matters that the present invention solves is: make up a kind of electric moisten display device based on the photoluminescence effect, overcome the bad technical matters of electric moisten display device display effect in the present technology.
Technical scheme of the present invention is: make up a kind of electric moisten display device based on the photoluminescence effect, comprise first substrate, second substrate that is oppositely arranged with described first substrate, first fluid, second fluid, partition wall and be arranged on public electrode on described first substrate, one or more drain insulating layer, be arranged on a plurality of TFT switches and a plurality of electrode of the rectangular arrangement on second substrate, has the gap between the described adjacent electrode, described partition wall is arranged on the described drain insulating layer to define pixel cell should the gap being trellis, described drain insulating layer is arranged between the described a plurality of TFT switches and a plurality of electrode of described first fluid and rectangular arrangement, described second fluid filled is between the described first fluid and first substrate, described each electrode is arranged in the pixel cell, this display device further comprises fluorescence coating and excites the luminous excitation source of this fluorescence coating that described fluorescence coating is arranged between described second substrate and the described first fluid.
Further technical scheme of the present invention is: described fluorescence coating comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel and an electrode pair should.
Further technical scheme of the present invention is: described fluorescence coating is that fluorescent powder or fluorescent ink are made.
Further technical scheme of the present invention is: described drain insulating layer is two-layer, and described fluorescence coating is arranged between the described two-layer drain insulating layer.
Further technical scheme of the present invention is: described fluorescence coating is arranged on TFT switch and the electrode and the gap.
Further technical scheme of the present invention is: described excitation source for fluorescence coating provide blue light or, purple light or ultraviolet light.
Further technical scheme of the present invention is: described public electrode is netted, pectination or strip.
Technical scheme of the present invention is: make up a kind of electric moisten display device based on the photoluminescence effect, comprise first substrate, second substrate that is oppositely arranged with described first substrate, first fluid, second fluid, partition wall and be arranged on public electrode on described first substrate, be arranged on a plurality of TFT switches and a plurality of electrode of the rectangular arrangement on second substrate, has the gap between the described adjacent electrode, described partition wall is arranged on second substrate to define pixel cell should the gap being trellis, described first fluid is filled between adjacent partition wall, described second fluid filled is between the described first fluid and first substrate, described each electrode is arranged in the pixel cell, this display device further comprises the hydrophobic insulation fluorescence coating with hydrophobic insulation characterisitic and excites the luminous excitation source of this fluorescence coating that described hydrophobic insulation fluorescence coating is arranged between described second substrate and the described first fluid.
Further technical scheme of the present invention is: described hydrophobic insulation fluorescence coating is mixed into graininess by fluorescent material that hydrophobic insulation material is made or dissolve in hydrophobic insulation material with the form of solute makes.
Further technical scheme of the present invention is: described hydrophobic insulation fluorescence coating comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel and an electrode pair should.
Further technical scheme of the present invention is: described excitation source provides blue light or purple light or ultraviolet light for hydrophobic insulation fluorescence coating.
Further technical scheme of the present invention is: described public electrode is netted, pectination or strip.
Technique effect of the present invention is: a kind of electric moisten display device based on the photoluminescence effect of the present invention, by described fluorescence coating or hydrophobic insulation fluorescence coating are set between described second substrate and described first fluid, the photoluminescence effect takes place to fluorescence coating irradiation back in ultraviolet light or blue light, and form the colored picture and text of active illuminating, make electric moisten display device brightness height, color is more beautiful, color is more bright-coloured.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of optimal way structural representation of the present invention.
Fig. 3 is an another kind of optimal way structural representation of the present invention.
Fig. 4 is an another kind of structural representation of the present invention.
Fig. 5 is an another kind of structural representation of the present invention.
Fig. 6 is the netted public electrode structural representation of the present invention.
Fig. 7 is a strip public electrode structural representation of the present invention.
Fig. 8 is a pectination public electrode structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1, the specific embodiment of the present invention is: the electric moisten display device that the present invention is based on the photoluminescence effect comprises first substrate 1, second substrate 2 that is oppositely arranged with described first substrate 1, first fluid 7, second fluid 9, partition wall 8 and be arranged on public electrode 12 on described first substrate 1, one or more drain insulating layer 5, be arranged on a plurality of TFT switches 4 and a plurality of electrode 6 of the rectangular arrangement on second substrate 2, has the gap between the described adjacent electrode 6,8 pairs of described partition walls should the gap be trellis and be arranged on the drain insulating layer 5 to define pixel cell, described drain insulating layer 5 is arranged between the described a plurality of TFT switches 4 and a plurality of electrode 6 of described first fluid 7 and rectangular arrangement, described second fluid 9 is filled between the described first fluid 7 and first substrate 1, described each electrode is arranged in the pixel cell, this display device further comprises fluorescence coating 3 and excites the luminous excitation source of this fluorescence coating 10 that described fluorescence coating 3 is arranged between described second substrate 2 and the described first fluid 7.In the specific embodiment of the invention, be furnished with public electrode 12 on first substrate 1, public electrode 12 is netted (as shown in Figure 6), pectination (as shown in Figure 8) or strip (as shown in Figure 7) to increase the transmitance of ultraviolet light and visible light.Described first fluid 7 has the characteristic of ultraviolet shielding and visible light, and described first substrate 1, described second fluid 9, described public electrode 12, described drain insulating layer 5 all have the characteristic of ultraviolet light and visible light.
In the embodiments of the invention, in electric moisten display device, described first fluid 7 is an oiliness shading fluid, the shading fluid is dissolved with black dyes or pigment, and purpose is to absorb visible light and ultraviolet light, and black dyes or pigment are lipophilicity, be insoluble to polarity liquid, the shading fluid thickness is less than partition wall.Excitation source 10 sends the light of fluorescence excitation layer 3, described light sees through second fluid 9 and is mapped to first fluid 7, because described first fluid 7 is on fluorescence coating 3 tops, the light of injecting is absorbed, display device is black, when needing display image or literal, corresponding TFT switch 4 is opened, and second fluid 9 is the polar fluid of printing opacity, between second fluid 9 of this moment and the electrode 6 voltage difference is arranged, because electrowetting effect, the shading fluid is passed, and appears the drain insulating layer 5 that is covered, because drain insulating layer 5 has light transmission, light sees through drain insulating layer 5 and penetrates on fluorescence coating 3, and fluorescence coating 3 is stimulated and luminous, demonstrates colored picture and text.
In the preferred embodiment for the present invention, described fluorescence coating comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel is corresponding with an electrode 6.When fluorescence coating 3 is the colorless fluorescent layer, both can show that black and white was double-colored, also can display color.The fluorescent material of described fluorescence coating 3 is fluorescent powder or fluorescent ink.Described fluorescent powder is ultraviolet excitation fluorescent powder, purple light excited fluorescent powder, blue-light excited fluorescent powder.Described fluorescent ink is ultraviolet excitation fluorescent ink, purple light excited fluorescent ink, blue-light excited fluorescent ink.Described electrode 6 is reflective thick film metal (as silver or aluminium) electrode.In the preferred embodiment for the present invention, described excitation source 10 provides blue light or purple light or ultraviolet light for fluorescence coating, described excitation source 10 be in area source, the pointolite any, the structure that described excitation source 10 is placed is side or the front that is arranged on fluorescence coating 3.
As shown in Figure 1, specific embodiments of the invention are: described first substrate 1 is transparency carrier, make by the material that can see through ultraviolet light and visible light, second fluid 9 is filled between the first fluid 7 and first substrate 1, second fluid 9 is immiscible with first fluid 7, second fluid 9 be in water or alcohol or the electrolytic solution any.Second fluid 9 is the polarity liquid of printing opacity, can see through ultraviolet light and visible light.The a plurality of TFT switches 4 and the electrode 6 of rectangular arrangement are arranged on second substrate 2, and have a gap between the adjacent electrode.Described fluorescence coating 3 comprises a plurality of RGB sub-pixels that are matrix distribution, each sub-pixel is corresponding with an electrode 6, described fluorescence coating 3 has a flat surface, drain insulating layer 5 covers TFT switch and transparency electrode and gap thereof, described drain insulating layer 5 is two-layer, and described fluorescence coating 3 is arranged between the described two-layer drain insulating layer 5.
As shown in Figure 2, specific embodiments of the invention are: described first substrate 1 is transparency carrier, make by the material that can see through ultraviolet light and visible light, second fluid 9 is filled between the first fluid 7 and first substrate 1, second fluid 9 is immiscible with first fluid 7, and second fluid 9 can be water or alcohol or electrolytic solution.Second fluid 9 is the polarity liquid of printing opacity, can see through ultraviolet light and visible light.The a plurality of TFT switches 4 and the electrode 6 of rectangular arrangement are arranged on second substrate 2, and have a gap between the adjacent electrode.Described fluorescence coating 3 comprises a plurality of RGB sub-pixels that are matrix distribution, each sub-pixel is corresponding with an electrode 6, described fluorescence coating 3 has a flat surface, and described fluorescence coating 3 is arranged on TFT switch 4 and the electrode 6 and the gap, and drain insulating layer 5 covers on the described fluorescence coating 3.
As shown in Figure 3, in the specific embodiments of the invention, described area source is the plasma luminescence light source, in the specific embodiment, also comprise the 3rd transparency carrier 11 that is arranged on first substrate, 1 outside, a plurality of x electrodes that alternately are arranged in parallel and y electrode are arranged on described the 3rd transparency carrier 11, and a plurality of x electrodes are parallel to total X electrode, and a plurality of y electrodes are parallel to total Y electrode.Each electrode surface is coated with dielectric layer 16, and dielectric layer 16 surface coverage have medium protection film 17.Each x electrode comprises transparency electrode 21 and bus electrode 22, and each y electrode comprises transparency electrode 31 and bus electrode 32.Public electrode 12 is a thick membrane electrode, and width is generally less than 100um.In the ranks (and or between row) distance is greater than 1cm.Between the 3rd substrate 11 and first substrate 1 certain distance is arranged, periphery seal forms air chamber 19, is filled with inert gas in the air chamber 19 to be excited to send ultraviolet light and visible light.
As shown in Figure 4, in the specific embodiments of the invention, also comprise the 3rd transparency carrier 11 that is arranged on first substrate, 1 outside, described excitation source 10 is led light source or oled light source, be arranged on the 3rd transparency carrier 11, described led light source or oled light source drive with serial or parallel connection or series-parallel system.
As shown in Figure 4, the specific embodiment of the present invention is: make up a kind of electric moisten display device based on the photoluminescence effect, comprise first substrate 1, second substrate 2 that is oppositely arranged with described first substrate 1, first fluid 7, second fluid 9, partition wall 8 and be arranged on public electrode 12 on described first substrate 1, be arranged on a plurality of TFT switches 4 and a plurality of electrode 6 of the rectangular arrangement on second substrate 2, has the gap between the described adjacent electrode 6,8 pairs of described partition walls should the gap be trellis and be arranged on second substrate 2 to define pixel cell, described second fluid 9 is filled between the described first fluid 7 and first substrate 1, described first fluid 7 is filled between adjacent partition wall 8, described second fluid 9 is filled between the described first fluid 7 and first substrate 1, described each electrode 6 is arranged in the pixel cell, this display device further comprises the hydrophobic insulation fluorescence coating 13 with hydrophobic insulation characterisitic and excites the luminous excitation source 10 of this hydrophobic insulation fluorescence coating 13, described hydrophobic insulation fluorescence coating 13 is arranged between described second substrate 2 and the described first fluid 7, in the specific embodiment, described hydrophobic insulation fluorescence coating 13 comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel is corresponding with an electrode 6.Described hydrophobic insulation fluorescence coating is to be mixed into hydrophobic insulation material by fluorescent material with graininess to make, and perhaps dissolves in hydrophobic insulation material with the form of solute and makes.
As shown in Figure 5, in the specific embodiments of the invention, described excitation source 10 is led light source or oled light source, is arranged on first substrate 1, and described led light source or oled light source drive with serial or parallel connection or series-parallel system.
As shown in Figure 5, the specific embodiment of the present invention is: make up a kind of electric moisten display device based on the photoluminescence effect, second substrate 2, first fluid 7, second fluid 9, the partition wall 8 that comprises first substrate 1, is oppositely arranged with described first substrate 1 and be arranged on described excitation source 10 on described first substrate 1, described led light source or oled light source drive with serial or parallel connection or series-parallel system, and described led light source or oled light source are between first substrate and second fluid 9.Described led light source or oled light source surface coverage fish tail and waterproof layer 14, fish tail and waterproof layer 14 is between described led light source or oled light source and two fluids 9.Fish tail and waterproof layer 14 surfaces are provided with public electrode 12.The a plurality of TFT switches 4 and the electrode 6 of rectangular arrangement are arranged on second substrate 2, and have a gap between the adjacent electrode.Described fluorescence coating 3 comprises a plurality of RGB sub-pixels that are matrix distribution, each sub-pixel is corresponding with an electrode 6, described fluorescence coating 3 has a flat surface, drain insulating layer 5 covers TFT switch and transparency electrode and gap thereof, described drain insulating layer 5 is two-layer, and described fluorescence coating 3 is arranged between the described two-layer drain insulating layer 5.Described fish tail and waterproof layer 14 is made by insulating material, in order to protect described led light source or oled light source and driving circuit thereof.
Technique effect of the present invention is: the present invention is by being provided with described fluorescence coating or hydrophobic insulation fluorescence coating between described second substrate and described first fluid, the photoluminescence effect takes place to fluorescence coating irradiation back in ultraviolet light or purple light or blue light, and form the colored picture and text of active illuminating, make electric moisten display device brightness height, color is more beautiful, color is more bright-coloured.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (12)
1. electric moisten display device based on the photoluminescence effect, comprise first substrate, second substrate that is oppositely arranged with described first substrate, first fluid, second fluid, partition wall and be arranged on public electrode on described first substrate, one or more drain insulating layer, be arranged on a plurality of TFT switches and a plurality of electrode of the rectangular arrangement on second substrate, has the gap between the described adjacent electrode, described partition wall is arranged on the described drain insulating layer to define pixel cell should the gap being trellis, described drain insulating layer is arranged between the described a plurality of TFT switches and a plurality of electrode of described first fluid and rectangular arrangement, described second fluid filled is between the described first fluid and first substrate, described each electrode is arranged in the pixel cell, it is characterized in that, this display device further comprises fluorescence coating and excites the luminous excitation source of this fluorescence coating that described fluorescence coating is arranged between described second substrate and the described first fluid.
2. according to the described electric moisten display device based on the photoluminescence effect of claim 1, it is characterized in that described fluorescence coating comprises a plurality of RGB sub-pixels that are matrix distribution, each sub-pixel and an electrode pair should.
3. according to the described electric moisten display device of claim 1, it is characterized in that described fluorescence coating is that fluorescent powder or fluorescent ink are made based on the photoluminescence effect.
4. according to the described electric moisten display device based on the photoluminescence effect of claim 1, it is characterized in that described drain insulating layer is two-layer, described fluorescence coating is arranged between the described two-layer drain insulating layer.
5. according to the described electric moisten display device of claim 1, it is characterized in that described fluorescence coating is arranged on TFT switch and the electrode and the gap based on the photoluminescence effect.
6. according to the described electric moisten display device of claim 1, it is characterized in that described excitation source provides blue light or purple light or ultraviolet light for fluorescence coating based on the photoluminescence effect.
7. according to the described electric moisten display device of claim 1, it is characterized in that that described public electrode is is netted, pectination or strip based on the photoluminescence effect.
8. electric moisten display device based on the photoluminescence effect, comprise first substrate, second substrate that is oppositely arranged with described first substrate, first fluid, second fluid, partition wall and be arranged on public electrode on described first substrate, be arranged on a plurality of TFT switches and a plurality of electrode of the rectangular arrangement on second substrate, has the gap between the described adjacent electrode, described partition wall is arranged on second substrate to define pixel cell should the gap being trellis, described first fluid is filled between adjacent partition wall, described second fluid filled is between the described first fluid and first substrate, described each electrode is arranged in the pixel cell, it is characterized in that, this display device further comprises the hydrophobic insulation fluorescence coating with hydrophobic insulation characterisitic and excites the luminous excitation source of this fluorescence coating that described hydrophobic insulation fluorescence coating is arranged between described second substrate and the described first fluid.
9. the described according to Claim 8 electric moisten display device based on the photoluminescence effect is characterized in that, described hydrophobic insulation fluorescence coating is mixed into graininess by fluorescent material that hydrophobic insulation material is made or dissolve in hydrophobic insulation material with the form of solute makes.
10. the described according to Claim 8 electric moisten display device based on the photoluminescence effect is characterized in that, described hydrophobic insulation fluorescence coating comprises a plurality of RGB sub-pixels that are matrix distribution, and each sub-pixel and an electrode pair should.
11. the described according to Claim 8 electric moisten display device based on the photoluminescence effect is characterized in that, described excitation source provides blue light or purple light or ultraviolet light for hydrophobic insulation fluorescence coating.
12. the described according to Claim 8 electric moisten display device based on the photoluminescence effect is characterized in that, that described public electrode is is netted, pectination or strip.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981267A (en) * | 2012-12-05 | 2013-03-20 | 京东方科技集团股份有限公司 | Display panel and electrowetting display equipment |
| CN103064181A (en) * | 2012-11-23 | 2013-04-24 | 陈明晖 | Bistable state electric wetting display device |
| WO2013186279A1 (en) * | 2012-06-12 | 2013-12-19 | Liquavista B.V. | Electrowetting display device |
| CN104883562A (en) * | 2015-05-18 | 2015-09-02 | 广州视源电子科技股份有限公司 | Display module, manufacturing method for display module, and three-dimensional image data display apparatus |
| CN105374852A (en) * | 2015-11-16 | 2016-03-02 | Tcl集团股份有限公司 | Printed light emitting display without pixel bank and manufacturing method thereof |
| CN105489611A (en) * | 2015-11-26 | 2016-04-13 | Tcl集团股份有限公司 | Printed type light emitting display and manufacturing method therefor |
| CN105609010A (en) * | 2014-11-19 | 2016-05-25 | 上海聚然智能科技有限公司 | Multi-layer display and optical vision optimization method thereof |
| CN106405823A (en) * | 2016-11-01 | 2017-02-15 | 京东方科技集团股份有限公司 | Electrowetting display panel, display device and driving 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 |
| CN110085175A (en) * | 2019-04-22 | 2019-08-02 | 深圳市国华光电科技有限公司 | A kind of electrowetting ink driving method and relevant device |
| CN110568608A (en) * | 2019-08-30 | 2019-12-13 | 华南师范大学 | High-brightness full-color TV wetting display device |
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| CN101355838A (en) * | 2007-07-25 | 2009-01-28 | 群康科技(深圳)有限公司 | Electric moistening display |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013186279A1 (en) * | 2012-06-12 | 2013-12-19 | Liquavista B.V. | Electrowetting display device |
| US9140891B2 (en) | 2012-06-12 | 2015-09-22 | Amazon Technologies, Inc. | Electrowetting device |
| CN103064181A (en) * | 2012-11-23 | 2013-04-24 | 陈明晖 | Bistable state electric wetting display device |
| CN102981267B (en) * | 2012-12-05 | 2015-01-21 | 京东方科技集团股份有限公司 | Display panel and electrowetting display equipment |
| CN102981267A (en) * | 2012-12-05 | 2013-03-20 | 京东方科技集团股份有限公司 | Display panel and electrowetting display equipment |
| CN105609010A (en) * | 2014-11-19 | 2016-05-25 | 上海聚然智能科技有限公司 | Multi-layer display and optical vision optimization method thereof |
| CN104883562A (en) * | 2015-05-18 | 2015-09-02 | 广州视源电子科技股份有限公司 | Display module, manufacturing method for display module, and three-dimensional image data display apparatus |
| CN105374852A (en) * | 2015-11-16 | 2016-03-02 | Tcl集团股份有限公司 | Printed light emitting display without pixel bank and manufacturing method thereof |
| CN105374852B (en) * | 2015-11-16 | 2019-10-11 | Tcl集团股份有限公司 | A kind of printed form active display and preparation method thereof of no pixel bank |
| CN105489611A (en) * | 2015-11-26 | 2016-04-13 | Tcl集团股份有限公司 | Printed type light emitting display and manufacturing method therefor |
| CN106405823A (en) * | 2016-11-01 | 2017-02-15 | 京东方科技集团股份有限公司 | Electrowetting display panel, display device and driving 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 |
| CN110085175A (en) * | 2019-04-22 | 2019-08-02 | 深圳市国华光电科技有限公司 | A kind of electrowetting ink driving method and relevant device |
| CN110085175B (en) * | 2019-04-22 | 2021-05-04 | 深圳市国华光电科技有限公司 | Electrowetting ink driving method and related equipment |
| CN110568608A (en) * | 2019-08-30 | 2019-12-13 | 华南师范大学 | High-brightness full-color TV wetting display device |
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