US2017275533A1PendingUtilityA1

Smoothing phosphors for ac led lighting

57
Assignee: PERFORMANCE INDICATOR LLCPriority: Oct 11, 2013Filed: Jun 13, 2017Published: Sep 28, 2017
Est. expiryOct 11, 2033(~7.3 yrs left)· nominal 20-yr term from priority
Inventors:Weiyi Jia
C09K 11/592C09K 11/7706C09K 11/77344C09K 11/77214C09K 11/77744C09K 11/77924C09K 11/77064C09K 11/7792C09K 11/7734C09K 11/7721C09K 11/7774
57
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a ½ cycle response to a phase change of the alternating current to substantially reduce flicker. The smoothing phosphor of the present teachings comprises a matrix represented by the formula: M (l-k-r-v) X (m-p) Al 2(n-0.5x-0.5y) O 3(n-0.5x-0.5y) : Mn (x+p) O (x+p) , Si y O 2y , Eu k , R r , Li v wherein M is at least one of La 2 O 3 , Ce 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , Ba 2 OF 2 , Sr 2 OF 2 , Ca 2 OF 2 , Ba 2 OCl 2 , Sr 2 OCl 2 , Ca 2 OCl 2 , BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise La 2 O 3 , Ce 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , Ba 2 OF 2 , Sr 2 OF 2 , Ca 2 OF 2 , Ba 2 OCl 2 , Sr 2 OCl 2 , or Ca 2 OCl 2 ; X is at least one of MgO or ZnO; R is at least one of Sm, Pr, Tb, Dy, Er, or Ho; m=0 to 2; n=4 to 11; x=0.005 to 1; y=0.005 to 1; p=0 to 1; k=0 to 0.2; r=0 to 0.2; and v=0 to 0.2.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A smoothing phosphor for AC LED lighting, said smoothing phosphor comprising a matrix represented by the formula:
 M (l-k-r-v) X (m-p) Al 2(n-0.5x-0.5y) :O 3(n-0.5x-0.5y) :Mn (x+p) O (x+p) , Si y O 2y , Eu k , R r , Li v  wherein:   M is at least one of La 2 O 3 , Ce 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , Ba 2 OF 2 , Sr 2 OF 2 , Ca 2 OF 2 , Ba 2 OCl 2 , Sr 2 OCl 2 , Ca 2 OCl 2 , BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise La 2 O 3 , Ce 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , Ba 2 OF 2 , Sr 2 OF 2 , Ca 2 OF 2 , Ba 2 OCl 2 , Sr 2 OCl 2 , or Ca 2 OCl 2 ;   X is at least one of MgO or ZnO;   R is at least one of Sm, Pr, Tb, Dy, Er, or Ho;   m=0 to 2;   n=4 to 11;   x=0.005 to 1;   y=0.005 to 1;   p=0 to 1;   k=0 to 0.2;   r=0 to 0.2; and   v=0 to 0.2.   
     
     
         2 . The smoothing phosphor of  claim 1 , wherein M is at least one of La 2 O 3 , Ce 2 O 3 , Gd 2 O 3 , Lu 2 O 3 , Ba 2 OF 2 , Sr 2 OF 2 , Ca 2 OF 2 , Ba 2 OCl 2 , Sr 2 OCl 2 , or Ca 2 OCl 2 , m=0, n=11, and p=0, and the matrix is represented by the formula:
 M l-k-r) Al (22-x-y) O (33-1.5x-1.5y) :Mn x O x , Si y O 2y , Eu k , R r , Li v .   
     
     
         3 . The smoothing phosphor of  claim 1 , wherein M is at least of BaO, SrO, CaO, or ZnO, m=2, n=8, and the matrix is represented by the formula:
 M (l-k-r-v) X (2-p) Al( 16-x-y) O (24-1.5x-1.5y) :Mn (x+p) O (x+p) , Si y O 2y , Eu k , R r , Li v .   
     
     
         4 . The smoothing phosphor of  claim 1 , wherein M is at least of BaO, SrO, CaO, or ZnO, m=1, n=5, and the matrix is represented by the formula:
 M (l-k-r-v) X (l-p) Al (10-x-y) )O (15-1.5x-1.5y) :Mn x+p) O (x+p) , Si y O 2y , Eu k , R r , Li v .   
     
     
         5 . The smoothing phosphor of  claim 1 , wherein M is at least of BaO, SrO, CaO, or ZnO, m=1, n=7, and the matrix is represented by the formula:
 M (l-k-r-v) X (l-p) Al (14-x-y) O (21-1.5x-1.5y) :Mn (x+p) O (x+p) , Si y O 2y , Eu k , R r , Li v .   
     
     
         6 . The smoothing phosphor of  claim 1 , wherein M is at least of BaO, SrO, CaO, or ZnO, m=0, n=6, p=0, and the matrix is represented by the formula:
 M (l-k-r-v) Al (12-x-y) O (18-1.5x-1.5y) :Mn x O x , Si y O 2y , Eu k , R r , Li v .

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.