CN101891999B - Water soluble photosensitive fluorescent powder coating and method for making anode fluorescent powder layer by same - Google Patents
Water soluble photosensitive fluorescent powder coating and method for making anode fluorescent powder layer by same Download PDFInfo
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- CN101891999B CN101891999B CN 201010210145 CN201010210145A CN101891999B CN 101891999 B CN101891999 B CN 101891999B CN 201010210145 CN201010210145 CN 201010210145 CN 201010210145 A CN201010210145 A CN 201010210145A CN 101891999 B CN101891999 B CN 101891999B
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Abstract
The invention discloses a water soluble photosensitive fluorescent powder coating and a method for making an anode fluorescent powder layer by the same. The method comprises the following steps of: (1) making a black background pattern by utilizing a mode of matching screen printing with photoetching; (2) coating the water soluble photosensitive fluorescent powder coating on an anode substrate in a screen printing mode; (3) drying at low temperature, and curing a coating layer to form a film; (4) performing exposure on the fluorescent powder coat by combining an ultraviolet lamp with a film pattern to make a patterned area undergo photoreaction for chemical ligation; (5) developing by utilizing aqueous solution as a developer; and (6) blowing nitrogen with certain pressure to dry. The steps from (2) to (6) are repeated twice to obtain a tricolor fluorescent powder pattern. A high-resolution pattern is made by patterning the required fluorescent powder layer through matching the screen printing with the photoetching; and the method has the advantages of simple and convenient operation, high resolution of displays, and wide industrial application value.
Description
Technical field:
The present invention relates to a kind of field-emitter display (Field Emission Display; FED) anode plate fluorescent powder coating and preparation method thereof, particularly relate to a kind of with screen printing technique collocation photoetching technique, thereby realize the patterned water soluble photosensitive fluorescent powder coating of fluorescent powder coating and make the method for anode fluorescent powder layer with it.
Background technology:
As shown in Figure 1, it is novel three-electrode structure carbon nanotube field emission display module structural representation, one existing field-emitter display 1, its structure comprises anode 2 and negative electrode 3 at least, be provided with separaant 4 between this anode 2 and the negative electrode 3, so that the interval of vacuum area between anode 2 and the negative electrode 3 to be provided, can also be as the support between anode 2 and the negative electrode 3.In addition, this anode 2 comprises an anode glass substrate 21, an anode electrode layer 22 and a fluorescent powder coating 23 at least; And this negative electrode 3 comprises a cathode glass substrate 31, a negative electrode layer 32, cathode material layer 33 and a grid electrode layer 34 at least; Be provided with separaant between its Anodic 2 and the negative electrode 3, its objective is the support that keeps the vacuum area between the negative electrode and positive electrode, and a place is provided, thereby make the electron source on the negative plate make light-emitting phosphor at the fluorescent powder that produces on electronics and the directive positive plate under the effect of extra electric field.
The field-emitter display of said structure, in order to guarantee colour purity, the gap of anode 2 and negative electrode 3 is very narrow,, gets on the adjacent vermicelli avoiding between the 200 μ m between 50 μ m.Needed driving electric field intensity need not surpass 10V/ μ m mostly, or driving voltage is greater than more than the 150V, can make negative electrode produce electronics, this too small cathode and anode spacing has limited the application of high efficiency high-pressure fluorescence powder so that anode voltage can not surpass 1000V.
Therefore, based on above demand, in the anode and cathode panel gap of micron order specification and under with the circuit structure that utilizes low driving voltage, more harsh for the requirement of the luminous efficiency of fluorescent powder coating on the positive plate, direct reaction then is the structure of the luminescent coating of positive plate in light-emitting phosphor mechanism.For guaranteeing the parallelism of field emission device anode and cathode, also require fluorescent layer thickness very even, because Anode-cathode Distance is little, the inhomogeneous meeting of fluorescent layer causes the inhomogeneous of electric field; Because the field emission device operating pressure is very high and window of tube is open, fluorescent layer will bear the bombardment of high-velocity electrons and not come off, and also must higher sticking power be arranged with substrate.
At present, the performance of phosphor powder layer is with to be coated with screen technique closely related, common be coated with screen technique the precipitator method are arranged, gets rid of the method for being coated with, silk screen print method etc.Precipitator method productivity is very low, has not used now very much; Get rid of the phosphor powder layer that is coated with the method making more coarse, thickness rises and falls more than 10 μ m, is not suitable for field emission device; Silk screen print method also exists the lower problem of precision simultaneously, is not suitable for the making of big area, high precision panel.
Therefore, how to provide a kind of anode fluorescent powder layer that can satisfy large-size glass substrate and high-resolution panel, become a difficult problem in the FED making.
Summary of the invention:
One of purpose of the present invention provides a kind of water soluble photosensitive fluorescent powder coating of novel texture, can be used in the anode fluorescent powder layer of preparation field-emitter display.
Another object of the present invention provides a kind of method of making anode fluorescent powder layer, by applying coating with a kind of easy silk screen printing, cooperates the graphical required fluorescent powder coating of photoetching process again, makes program simplification, and more practical.
For achieving the above object, the technical solution used in the present invention is:
A kind of water soluble photosensitive fluorescent powder coating is according to the water soluble resin of mass percent: 20-30%, water-soluble light trigger, 0.3-0.5% defoamer, the dispersion agent of 2-5% and the fluorescent powder of 40-60% of 8-10%; Wherein the fluorescent powder median size is about 1 μ m to 5 μ m; Described water soluble photosensitive fluorescent powder coating viscosity is controlled between 10000 to 30000cps; The total amount of described water soluble resin, water-soluble light trigger, defoamer, dispersion agent and fluorescent powder is 100%.
Described water soluble resin is the salt of polyacrylic acid or polymethyl acrylic acid; Described water-soluble light trigger is 2-hydroxyl-2, the 2-dimethyl acetophenone; Described defoamer is nonionogenic tenside; Described dispersion agent is the sodium naphthalene sulfonate condenses; Described fluorescent powder is FED with high-pressure fluorescence powder or PDP fluorescent powder.
Described water soluble photosensitive fluorescent powder coating is made the method for anode fluorescent powder layer, may further comprise the steps:
(1) utilize black-bottom paint to cooperate the mode of photoetching to produce the figure live width as the black matrix figure below 50 microns take silk screen printing; Described black-bottom paint is photosensitivity black matrix slurry DC243 or Vg904;
(2) with screen printing mode water soluble photosensitive fluorescent powder coating is coated on the anode substrate;
(3) through cryodrying, make the coat film-forming;
(4) exciting light modulation to produce UV-light, and cooperate film figure that the fluorescent powder coating is exposed, thereby carry out chemical bonds so that want patterned area generation photoresponse;
(5) subsequently, utilize the aqueous solution to develop as photographic developer;
(6) be that the nitrogen of 0.2-0.5MPa dries up with pressure;
(7) repeat above (2)～(6) step twice, can obtain the anode fluorescent powder layer that is consisted of by red, green, blue three fluorescence vermicelli.
Described water soluble photosensitive fluorescent powder coating drying and forming-film process, its aridity coefficient are 110 ℃ of drying curves, 130S/tact.
Wherein said ultraviolet photoetching step is as 40mJ/cm take exposure
2UV-light expose.
Described development step is to develop with the temperature 30-60 ℃ aqueous solution.
Water soluble photosensitive fluorescent powder coating of the present invention and the method for making anode fluorescent powder layer thereof, no matter larger improvement is all arranged on product structure, manufacture method or function, have large improvement technically, and produced practical effect, and the method for more existing fluorescent powder coating and fluorescent powder coating thereof has the multinomial effect of enhancement, thereby more be suitable for practicality, and have the extensive utility value of industry.
Description of drawings:
Fig. 1 is the structural representation of the field-emitter display assembly of routine;
Wherein: 1 is Field Emission Display; 2 is anode; 3 is negative electrode; 4 is separaant; 5 is carbon nanotube layer; 21 is the anode glass substrate; 22 is anode electrode layer; 23 is fluorescent powder coating; 31 is cathode glass substrate; 32 is negative electrode layer; 33 is the electron emission source layer; 34 is grid electrode layer; 35 is insulating medium layer; 36 is the electrode protection coating.
Embodiment:
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with drawings and Examples, be elaborated to a kind of water soluble photosensitive fluorescent powder coating of foundation the present invention proposition and with its method of making anode fluorescent powder layer.
Embodiment 1
The present invention provides a kind of water soluble photosensitive fluorescent powder coating that can print coating, with silk screen printing and cooperate photoetching process to make fluorescent powder coating.This water soluble photosensitive fluorescent powder coating is with water soluble resin, comprises that the salt etc. of polyacrylic acid or polymethyl acrylic acid is base-material; Water-soluble monomer such as acrylamide cooperate and add water-soluble light trigger 2-hydroxyl-2,2-dimethyl acetophenone Darocur1173, or claim HIPK to make a kind of minus photoresistance type polymkeric substance; Then add with fluorescent powder, and dispersion agent and defoamer.This water soluble photosensitive fluorescent powder coating of wherein modulating, its viscosity are controlled between 10000 to 30000cps, to adapt to the demand of silk screen printing.The method of its enforcement, utilize first black-bottom paint to produce high-precision black matrix figure, again water soluble photosensitive fluorescent powder coating is coated on the anode glass substrate with mode of printing, make this coat film-forming through a cryodrying, then to excite mercury lamp to produce UV-light, and cooperate the graphical required film to expose, and carry out chemical bonds so that want patterned area generation photoresponse, develop subsequently.Owing to being to select water-soluble system, so can utilize the aqueous solution to develop for photographic developer, therefore its cost is low, and can reduce the misgivings of environmental protection restriction requirement.
Accordingly as can be known, the present invention is a kind of water soluble photosensitive fluorescent powder coating that prints coating of modulation, makes fluorescent powder coating with printing and cooperation photoetching process.The modulation of described water soluble photosensitive fluorescent powder coating is take water as base solvent, adds with water-soluble system raw material, for example with the water soluble resin of 20% to 30% weight percent, comprises the salt of polyacrylic acid or polymethyl acrylic acid etc.; Add again the acrylamide monomer of 2% to 5% weight percent, add simultaneously the water-soluble light trigger 2-hydroxyl-2 of 8% to 10% weight percent, 2-dimethyl acetophenone Darocur1173, or claim HIPK, both are combined into a kind of minus photoresistance basic material; Add subsequently fluorescent powder 40% to 60% weight percent of selecting, its median size is about 1 μ m to 5 μ m; Other cooperates the preparation of coating to add defoamer, and it is nonionogenic tenside, such as Defoamer T-607 etc.Adding 0.3% to 0.5% weight percent as good, control, prevent or eliminate various foams in the coating with this; In order to increase the Uniform Dispersion of aforementioned powder in coating, can add necessary dispersion agent or interfacial agent, sodium naphthalene sulfonate condenses for example, one should add water soluble dispersing agent in the coating first and stirs, and then adds fluorescent powder and disperse.The last viscosity of photosensitivity coating after the modulation is controlled between 10000 to 30000cps, namely applicable to screen printing process.
The embodiment of the water soluble photosensitive fluorescent powder coating of modulating according to the present invention is to utilize first black-bottom paint to produce high-precision black matrix figure, the water soluble fluorescence powder coating is coated on the anode glass substrate with mode of printing again; Coating after the printing makes the coating film forming with simple drying process, and is cooperated exposure after the cooling; Exposure mode is to select ultraviolet lamp tube, and exposure is 40mJ/cm
2And a film is set as mask, can after being developed, keep so that be exposed the zone, namely develop through exposure process, photographic developer is to use the aqueous solution with certain temperature, impose a moulding pressure and develop with spraying method, the fluorescent powder layer pattern that retains after the development and the design configuration error of mask can be controlled in below the 5 μ m; Positive plate can blow with the nitrogen of certain pressure intensity after developing, and removes the photographic developer that residues on the anode glass substrate.
The making of water soluble photosensitive fluorescent powder coating of the present invention, as base solvent take the aqueous solution, interpolation is take the salt of the polymethyl acrylic acid of weight percent as 25%, add again weight percent and be 2% acrylamide monomer, add again weight percent and be 11% water-soluble light trigger 2-hydroxyl-2,2-dimethyl acetophenone Darocur1173, or title HIPK, and the fluorescent powder of median size 3 μ m, its weight percent is 50%, and weight percent is 0.5% defoamer, adds necessary dispersion agent or interfacial agent with the dispersion of auxiliary above-mentioned powder particle again.Coating of the present invention is coated on the anode glass substrate with printing process and forms the approximately coating of 6 to 8 μ m of mean thickness, and with 110 ℃, the drying curve of 130S/tact is dried, expose again, behind the film mask of adding a cover with figure, take exposure as 40mJ/cm
2UV-light expose after, develop, visualization way is the aqueous solution, under 35 ℃, develop, fluorescent powder figure after developing on the anode plate, planless zone only has the coating below 0.1% residual between the 7 μ m of gap, planless zone residual without coating almost between the 20 μ m of gap, the figure collimation error of developing remains on below the 10 μ m, can satisfy the demand that commodity are used.Then, the anode glass substrate after the development blows with the nitrogen of certain pressure intensity, removes the aqueous solution that residues on the anode glass substrate.
The method of making anode fluorescent powder layer of the present invention is to use water soluble photosensitive fluorescent powder coating, and it comprises the following steps:
(1) utilize black-bottom paint to cooperate the mode of photoetching to produce high-precision black matrix figure with silk screen printing;
(2) with screen printing mode water soluble photosensitive fluorescent powder coating is coated on the anode substrate;
(3) through cryodrying, make the coat film-forming;
(4) exciting light modulation to produce UV-light, and cooperate film figure that the fluorescent powder coating is exposed, thereby carry out chemical bonds so that want patterned area generation photoresponse;
(5) develop subsequently, owing to being to select water-soluble system, can utilize the aqueous solution to develop as photographic developer;
(6) nitrogen with certain pressure intensity dries up;
(7) repeat above (2)～(6) step twice, can obtain the anode fluorescent powder layer that is consisted of by red, green, blue three fluorescence vermicelli.
Water soluble photosensitive fluorescent powder coating of the present invention and the method for making anode fluorescent powder layer thereof, can make of a kind of easy silk screen printing and apply coating, cooperate again the graphical required fluorescent powder coating of photoetching process, its exposure imaging process can be made the figure of high-resolution, in addition, the method that the above-mentioned water soluble photosensitive fluorescent powder coating of application of the present invention is made anode fluorescent powder layer has the time of saving the new technology research and development and the effect that improves monitor resolution.It has above-mentioned many advantages and practical value, no matter larger improvement is all arranged on product structure, manufacture method or function, have large improvement technically, and produced practical effect, and the method for more existing fluorescent powder coating and fluorescent powder coating thereof has the multinomial effect of enhancement, thereby more be suitable for practicality, and have the extensive utility value of industry.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; 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 the present invention and determine scope of patent protection by claims of submitting to.
Claims (4)
1. method that water soluble photosensitive fluorescent powder coating is made anode fluorescent powder layer, it is characterized in that, water soluble photosensitive fluorescent powder coating is according to the water soluble resin of mass percent: 20-30%, water-soluble light trigger, 0.3-0.5% defoamer, the dispersion agent of 2-5% and the fluorescent powder of 40-60% of 8-10%; Wherein the fluorescent powder median size is l μ m to 5 μ m; Described water soluble photosensitive fluorescent powder coating viscosity is controlled between 10000 to 30000cps; The total amount of described water soluble resin, water-soluble light trigger, defoamer, dispersion agent and fluorescent powder is 100%;
Described water soluble resin is the salt of polyacrylic acid or polymethyl acrylic acid; Described water-soluble light trigger is 2-hydroxyl-2, the 2-dimethyl acetophenone; Described defoamer is nonionogenic tenside; Described dispersion agent is the sodium naphthalene sulfonate condenses; Described fluorescent powder is FED high-pressure fluorescence powder or PDP fluorescent powder;
May further comprise the steps:
(1) utilize black-bottom paint to cooperate the mode of photoetching to produce the figure live width as the black matrix figure below 50 microns take silk screen printing; Described black-bottom paint is photosensitivity black matrix slurry DC243;
(2) with screen printing mode water soluble photosensitive fluorescent powder coating is coated on the anode substrate;
(3) through cryodrying, make the coat film-forming;
(4) exciting light modulation to produce UV-light, and cooperate film figure that the fluorescent powder coating is exposed, thereby carry out chemical bonds so that want patterned area generation photoresponse;
(5) subsequently, utilize the aqueous solution to develop as photographic developer;
(6) be that the nitrogen of 0.2-0.5MPa dries up with pressure;
(7) repeat above (2)～(6) step twice, can obtain the anode fluorescent powder layer that is consisted of by red, green, blue three fluorescence vermicelli.
2. a kind of water soluble photosensitive fluorescent powder coating according to claim 1 method of making anode fluorescent powder layer, it is characterized in that: described water soluble photosensitive fluorescent powder coating drying and forming-film process, its aridity coefficient is 110 ℃ of drying curves, 130S/tact.
3. a kind of water soluble photosensitive fluorescent powder coating according to claim 1 method of making anode fluorescent powder layer, it is characterized in that: wherein said ultraviolet photoetching step is as 40mJ/cm take exposure
2UV-light expose.
4. a kind of water soluble photosensitive fluorescent powder coating according to claim 1 method of making anode fluorescent powder layer, it is characterized in that: described development step is to develop with the temperature 30-60 ℃ aqueous solution.
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| CN106498758A (en) * | 2017-01-05 | 2017-03-15 | 厦门誉和科技有限公司 | A kind of noctilucent coating cloth and preparation method thereof |
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| CN1451170A (en) * | 2000-07-27 | 2003-10-22 | 摩托罗拉公司 | Field emission display and method of manufacture |
| CN1690133A (en) * | 2004-04-29 | 2005-11-02 | 东元奈米应材股份有限公司 | Developing type luminescent powder paint and method for anode luminescent powder layer by using same |
| CN101447381A (en) * | 2008-12-11 | 2009-06-03 | 彩虹集团公司 | Method for preparing anode glass fluorescent powder coating |
| CN101702394A (en) * | 2009-10-29 | 2010-05-05 | 彩虹集团公司 | Coating for electrode protection for carbon nanotube field emission device and preparation method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451170A (en) * | 2000-07-27 | 2003-10-22 | 摩托罗拉公司 | Field emission display and method of manufacture |
| CN1690133A (en) * | 2004-04-29 | 2005-11-02 | 东元奈米应材股份有限公司 | Developing type luminescent powder paint and method for anode luminescent powder layer by using same |
| CN101447381A (en) * | 2008-12-11 | 2009-06-03 | 彩虹集团公司 | Method for preparing anode glass fluorescent powder coating |
| CN101702394A (en) * | 2009-10-29 | 2010-05-05 | 彩虹集团公司 | Coating for electrode protection for carbon nanotube field emission device and preparation method |
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