Method for preparing anode glass fluorescent powder coating

A phosphor and anode technology, applied in the field of field emission displays, can solve the problems of rough phosphor layer, no photosensitivity, and poor graphics accuracy, and achieve the effects of low coating cost, time saving, and improved resolution

Inactive Publication Date: 2009-06-03
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the defect that the fluorescent powder layer of the prior art is relatively rough and has no photosensitivity, and the accuracy of the obtained graphics is poor, and provides a method for preparing a fluorescent powder photosensitive coating. The specific steps are as follows:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Anode glass substrate printing: select photosensitive fluorescent powder according to 60% by weight, and its average particle size is about 5 μm; add 0.3% by weight of hydroxydimethylsiloxane as a defoamer, and the solvent is Texanol Ester alcohol (2,2,4-trimethyl-1.3 pentanediol monoisobutyrate), adding 20% ​​acrylic resin by weight, this resin is made of 0.4% by weight of methacrylic acid and 25% A copolymer of methyl methacrylate in weight percentage is formed, and then an activator whose main component is a cracking initiator is added in a weight percentage of 15%, the viscosity of the prepared photoreceptor coating is controlled at 10000cps, and it is coated on On the anode substrate glass;

[0021] (2) Solid film: the anode substrate glass printed with photosensitive coating is dried at 85°C and baked for 30 minutes to solidify the coating layer to form a film;

[0022] (3) Exposure: Use the excitation light to generate ultraviolet light, and cooperate with t...

Embodiment 2

[0027](1) Anode glass substrate printing: select photosensitive fluorescent powder according to 50% by weight, and its average particle size is about 3 μm; add 0.4% by weight of hydroxydimethylsiloxane as a defoamer, and the solvent is Texanol Ester alcohol (2,2,4-trimethyl-1.3 pentanediol monoisobutyrate), adding 30% acrylic resin by weight, this resin is made of 0.4% by weight of methacrylic acid and 27% A copolymer of methyl methacrylate is formed by weight percent, and then activator 369 with 10% by weight as the main component of the cracking initiator is added. The viscosity of the prepared photoreceptor coating is controlled at 30000cps, and it is coated by printing On the anode substrate glass;

[0028] (2) Solid film: the anode substrate glass printed with photosensitive coating is dried at a temperature of 90°C and baked for 30 minutes to solidify the coating layer to form a film;

[0029] (3) Exposure: Use the excitation light to generate ultraviolet light, and coo...

Embodiment 3

[0034] (1) Anode glass substrate printing: select photosensitive fluorescent powder according to 40% by weight, and its average particle size is about 3 μm; add 0.5% by weight of hydroxydimethylsiloxane as a defoamer, and the solvent is Texanol Ester alcohol (2,2,4-trimethyl-1.3 pentanediol monoisobutyrate), add 23% acrylic resin by weight, this resin is made of 0.5% by weight of methacrylic acid and 30% A copolymer of methyl methacrylate is formed by weight percentage, and then 13% by weight is added as a cracking initiator 1700. The viscosity of the prepared photoreceptor coating is controlled at 20000cps, and it is coated on the anode substrate by printing on the glass;

[0035] (2) Solid film: the anode substrate glass printed with photosensitive coating is dried at a temperature of 90°C and baked for 30 minutes to solidify the coating layer to form a film;

[0036] (3) Exposure: Use the excitation light to generate ultraviolet light, and cooperate with the film mask requ...

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PUM

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Abstract

The invention relates to a method for preparing field emission display anode panel fluorescent powder coating, which comprises the following steps: selecting photosensitive fluorescent powder; adding hydroxyl dimethyl siloxane as a foam killer; taking Texanol alcohol as a solvent; adding acrylic resin and an activator which takes a pyrolysis type initiator as the primary ingredient; applying to anode baseplate glass in a printing manner; subjecting the baseplate glass on which photosensitive paint is printed to drying and baking to enable the coating layer to solidify as a film; exposing with ultraviolet light, and developing; after developing, carrying out solidification treatment; and after cleaning, blow-drying with nitrogen. When being applied to the screen printing coating technology, the invention can produce an anode fluorescent powder coating with clear images; the accuracy of the produced images is high; the manufacture process is simple; and the paint has a low cost. The invention combines the screen printing technology and the developing technology, and achieves the effects of saving time and improving the display resolution when being applied to the technology for manufacturing a field emission display.

Description

technical field [0001] The invention relates to a method for preparing a fluorescent powder layer of an anode panel of a field emission display (Field Emission Display; FED), in particular to a method for preparing a fluorescent powder layer of an anode glass. Background technique [0002] The so-called field emission display of the present invention, its light-emitting mechanism is basically the same as the display light-emitting principle of a traditional cathode ray tube (Cathode Ray Tube, CRT), it can be said that it is the combination of a display CRT and a liquid crystal display (Liquid Crystal Display, LCD). Born out of advantages, it still uses the display CRT electron gun to emit RGB three-color light to display images on the screen. However, a display CRT has only one bulky electron gun unit, while a field emission display has as many electron gun units as its display pixels. When implementing a field emission display, the resolution is specified in advance, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/20H01J9/22
Inventor 赵莉
Owner IRICO
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