US 9,156,734 B2Granted

Method for manufacturing fluorescent powder substrate and liquid crystal module using fluorescent powder substrate

AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.

InventorYewen Wang

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Abstract

A method for manufacturing fluorescent powder substrate includes (1) providing a fluorescent powder and glass panels of which one forms a through hole; (2) mixing the fluorescent powder in deionized water solvent to form a slurry; (3) applying the slurry to form a fluorescent powder layer on one glass panel; (4) laying flat a loop of low melting point glass powder on the glass panel on which the fluorescent powder layer is formed; (5) laminating the other glass panel on the glass panel; (6) burning the laminated glass panels at a temperature of 400-550° C. to completely combust organic substance therebetween and to have the low melting point glass powder bonding the glass panels together; (7) evacuating interior between the glass panels through the through hole; and (8) sealing the through hole to form a fluorescent powder substrate.

Claims9

Dependent claims

A method for manufacturing fluorescent powder substrate, comprising the following steps:

(1) providing a fluorescent powder and first and second glass panels each comprising a single layer of glass having a glass surface, the second glass panel having a through hole;
(2) mixing the fluorescent powder in deionized water solvent to form a slurry;
(3) applying the slurry to form a fluorescent powder layer directly on the glass surface of the first glass panel;
(4) laying flat a loop of low melting point glass powder along an edge of the glass surface of the first glass panel on which the fluorescent powder layer is directly formed;
(5) laminating the second glass panel on the first glass panel with the glass surface of the second glass panel facing the first glass panel;
(6) burning the laminated first and second glass panels in air at a temperature of 400-550° C. so as to completely combust organic substance between the first and second glass panels and to have the low melting point glass powder bonding the first and second glass panels together;
(7) evacuating interior between the first and second glass panels to vacuum through the through hole formed in the second glass panel;
and
(8) sealing the through hole to form a fluorescent powder substrate, which comprises the fluorescent powder layer interposed between and in direct contact with the glass surfaces of the first and second glass panels.

6 more elements

A method for manufacturing fluorescent powder substrate, comprising the following steps:

(1) providing a fluorescent powder and first and second glass panels each comprising single layer of glass having a glass surface, the second glass panel having a through hole;
(2) mixing the fluorescent powder in deionized water solvent to form a slurry;
(3) applying the slurry to form a fluorescent powder layer on the glass surface of the first glass panel;
(4) laying flat a loop of low melting point glass powder along an edge of the glass surface of the first glass panel on which the fluorescent powder layer is formed;
(5) laminating the second glass panel on the first glass panel with the glass surface of the second glass panel facing the first glass panel;
(6) burning the laminated first and second glass panels in air at a temperature of 400-550° C. so as to completely combust organic substance between the first and second glass panels and to have the low melting point glass powder bonding the first and second glass panels together;
(7) evacuating interior between the first and second glass panels to vacuum through the through hole formed in the second glass panel;
and
(8) sealing the through hole to form a fluorescent powder substrate, which comprises the fluorescent powder layer interposed between and in direct contact with the glass surfaces of the first and second glass panels;
wherein the fluorescent powder is formed by mixing oxides, silicates, aluminates, nitrides, and oxynitrides;
wherein the slurry comprises triethyl phosphate, zinc strontium calcium borate, calcium pyrophosphate, and ammonium dihydrogen phosphate;
wherein the deionized water solvent comprises a water-soluble polymer based bonding agent;
wherein the water-soluble polymer based bonding agent comprises polyvinyl alcohol;
wherein the through hole has a hole diameter of 0.2-1 cm;
wherein the fluorescent powder layer is formed through printing or coating;
and
wherein the first and second glass panels are high transmittance glass.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/635,406Filed 12 Jul 2012
Priority: CN 2012 1 021879428 Jun 2012
Published: US 2014/0002770 A12 Jan 2014
Granted: 13 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G02F 1/133617
Illuminating devices: illumination with ultraviolet light; Luminescent elements or materials associated to the cell
B32B 17/10009
Laminated safety glass or glazing: characterized by the number, the constitution or treatment of glass sheets
B32B 17/10146
Treatment of at least one glass sheet: face treatment, e.g. etching, grinding or sand blasting
B32B 17/10807
Laminated safety glass or glazing: making laminated safety glass or glazing; Apparatus therefor