Yttrium oxide composition, a method of forming the yttrium oxide composition and a method of forming a yttrium oxide layer using the same

A technology of yttrium oxide and composition, applied in the field of yttrium oxide composition, can solve the problems of low yield, unsuitable for industrial-scale preparation of yttrium oxide, etc., and achieves the effect of low transparency

Inactive Publication Date: 2007-10-31
SAMSUNG CORNING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method using urea has low yields and is not suitable for the production of yttrium oxide on an industrial scale

Method used

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  • Yttrium oxide composition, a method of forming the yttrium oxide composition and a method of forming a yttrium oxide layer using the same
  • Yttrium oxide composition, a method of forming the yttrium oxide composition and a method of forming a yttrium oxide layer using the same
  • Yttrium oxide composition, a method of forming the yttrium oxide composition and a method of forming a yttrium oxide layer using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 36 grams of boric acid (H 3 BO 3 , Sigma, Aldrich) was dissolved in 1 liter of ethanol to prepare 10 mL of boric acid solution. Yttrium nitrate hexahydrate (Y(NO 3 ) 3 -6H 2 O, Sigma, Aldrich) was dissolved in water to prepare 50 ml of 0.065M yttrium nitrate solution. The yttrium salt solution was prepared by mixing the boric acid solution with the yttrium nitrate solution. The ammonium hydroxide solution is slowly added dropwise into the yttrium salt solution to prepare the yttrium oxide composition, and its pH value is controlled at 4.00.

Embodiment 2 to 9

[0062] The yttrium oxide composition was prepared in essentially the same manner as described in Example 1, except for the amount of ammonium hydroxide solution added to the yttrium salt solution. Compositions of Examples 2 to 9 having pH values ​​of 5.79, 5.90, 6.09, 6.15, 6.57, 6.65, 6.98 and 7.06 were prepared by varying the amount of ammonium hydroxide solution added to the yttrium salt solution.

Embodiment 10 to 13

[0064] 36 grams of boric acid (H 3 BO 3 , Sigma, Aldrich) was dissolved in 1 liter of ethanol to prepare 10 mL of boric acid solution. Yttrium nitrate hexahydrate (Y(NO 3 ) 3 -6H 2 O, Sigma, Aldrich) was dissolved in water to prepare 50 ml of 0.47M yttrium nitrate solution. The yttrium salt solution was prepared by mixing the boric acid solution with the yttrium nitrate solution. Compositions of Examples 10 to 13 having pH values ​​of 5.90, 6.37, 6.50 and 6.63 were prepared by varying the amount of ammonium hydroxide solution added to the yttrium salt solution.

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Abstract

There are provided an yttrium oxide composition having particle size of 25 nm or less, a method of preparing the same and a method of forming an yttrium oxide layer using the same. The yttrium oxide composition is prepared by dissolving an yttrium salt into a solvent to prepare an yttrium salt solution, and adding a basic compound to the yttrium salt solution to adjust a pH value to a range of 3.7 to 7. The yttrium oxide composition can form an yttrium oxide layer having improved properties since the composition has particle size of 25 nm or less and uniform particle distribution.

Description

technical field [0001] The present invention relates to a composition of yttrium oxide, a method for preparing the composition and a method for forming a layer of yttrium oxide using the composition, and in particular to a composition of yttrium oxide having a particle size equal to or smaller than 25 nm , a method of making such a composition and a method of forming an yttrium oxide layer using such a composition. Background technique [0002] The image quality of a display depends to a large extent on the quality of its light-giving part. In general, the quality of the light-giving portion is determined by properties such as the intensity and brightness uniformity of the light generated by the light-giving portion. Recently, a surface light source device such as a flat fluorescent lamp (FFL) having improved luminance uniformity has been developed. [0003] When the brightness gradually decreases over time, the life of the surface light source device also ends. The main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C09K9/00B82Y30/00C01F17/00C04B35/50H01J11/22H01J11/34H01J11/40H01J11/42H01J61/46
CPCC04B2235/5445C03C17/23C04B2235/3409C04B2235/444C03C17/007H01J2211/40C03C2217/42C03C2217/228C04B2235/44C04B35/505C04B2235/9646C04B2235/5454H01J9/20H01J61/35C04B2235/3225B82Y30/00Y10T428/256C01B35/1027C01P2004/60C04B2235/5418C01F17/218
Inventor 郑大洪赵硕显朴泰晧谢尔盖·K·叶夫斯特罗皮耶夫李岏义金泳洙朴在锡
Owner SAMSUNG CORNING CO LTD
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