US 6,548,172 B2Granted

Diamond-like carbon coatings on inorganic phosphors

Assignee3M Innovative Properties Company

InventorsMoses M. David, Dee Lynn Johnson

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Abstract

Inorganic phosphor particles having a diamond-like carbon coating and the method of making these particles. Inorganic phosphor particles are coated with a diamond-like carbon coating, which can include additive components. The coating is applied in a plasma reactor process.

Claims7

Dependent claims

A discrete free-moving inorganic phosphor particle, wherein an amorphous hydrogenated diamond-like carbon coating is on at least a portion of the particle surface.

Dependencies are inferred from the claim text.

Facts

Application: 09/810,364Filed 16 Mar 2001 · continuation
Priority: 26 Nov 1997
Published: US 2001/0018127 A130 Aug 2001
Granted: 15 Apr 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

C23C 16/26
Characterised by the deposition of inorganic material, other than metallic material: deposition of carbon only
C09K 11/025
Use of particular materials as binders, particle coatings or suspension media therefor: non-luminescent particle coatings or suspension media
C09K 11/08
Luminescent materials, e.g. electroluminescent or chemiluminescent: containing inorganic luminescent materials
C23C 16/4417
Characterised by the method of coating: methods specially adapted for coating powder

Family

Application08/978,716Parent of this continuation · filed 26 Nov 1997
US 2001/0018127 A1Pre-grant publication · published 30 Aug 2001
US 6,265,068 B1Parent of this continuation
US 6,548,172 B2This patent

From the US filing history. Foreign family members aren’t listed.

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