Patent · US Expired

Color display screen with color pigment

US6517741B1 · kind B1 · utility

10Cited by

5References

1Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Claus Feldmann · Aachen, DE
Joachim Opitz · Aachen, DE

Key dates

Filing date	Jan 18, 2000
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Jan 18, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/7789
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A color display screen comprises a red phosphor and a color pigment having a general formula selected from the group consisting of: A1−xA′xBO2−xN1+x, where 0<x<1, A is Mg(II), Ca(II), Sr(II), Ba(II) or Zn(II), A′ is a trivalent rare earth metal, Bi(III), Al(III) or Fe(III), B is V(V), Nb(V), Ta(V) or W(V); AB1−xB′xBO1+xN2−x, where 0<x<1, A is Mg(II), Ca(II), Sr(II), Ba(II) or Zn(II), A′ is a trivalent rare earth metal, Bi(III), Al(III) or Fe(III), B is V(V), Nb(V), Ta(V) or W(V) and B′ is Ti(IV), Zr(IV), Hf(IV), Sn(IV), Ge(IV), Si(IV), Nb(IV) or Ta(IV); AyA′2−yB2O5+yN2−y, where 0 <y<2, A is Mg(II), Ca(II), Sr(II). Ba(II) or Zn(II), A′ is a trivalent rare earth metal, Bi(III), Al(III) or Fe(III), B is V(V), Nb(V), Ta (V) or W(V); A2B2−yB′yO5+yN2−y, where 0<y<2, A is Mg(II), Ca(II), Sr(II). Ba(II) or Zn(II), B is V(V), Nb(V), Ta(V) or W(V), and B′ is Ti(IV), Zr(IV), Hf(IV), Sn(IV), Ge(IV), Si(IV), Nb(IV) or Ta(IV); CD2−mD′mO4−mNm, where 0<m<2, C is Mg(II), Ca(II), Mn(II), Fe(II), Co(II), Ni(II) or Zn(II) and D is Al(III), Ga(III), In(III), Ti(III), V(III), Cr(III), …

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.