US 12,273,967 B2
Display element and method for manufacturing a display element
Jani Holopainen, Espoo (FI); and Kari Härkönen, Espoo (FI)
Assigned to Lumineq Oy, Espoo (FI)
Appl. No. 17/995,826
Filed by Lumineq Oy, Espoo (FI)
PCT Filed Apr. 7, 2021, PCT No. PCT/FI2021/050253
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/205073, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 20205372 (FI), filed on Apr. 8, 2020.
Prior Publication US 2023/0156879 A1, May 18, 2023
Int. Cl. H05B 33/14 (2006.01); C23C 16/30 (2006.01); H05B 33/10 (2006.01); C23C 16/455 (2006.01)
CPC H05B 33/145 (2013.01) [C23C 16/306 (2013.01); H05B 33/10 (2013.01); C23C 16/45525 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display element comprising:
a first insulator layer;
a second insulator layer; and
a first phosphor layer of activator-group 4 element codoped zinc sulfide, ZnS:X,Y, between the first insulator layer and the second insulator layer;
wherein the first phosphor layer has an average atomic percentage of group 4 elements, at-%aveY, of at least 0.01 atomic percent, at-%;
wherein at least one of europium, Eu; manganese, Mn; samarium, Sm; and terbium, Tb, is used as an activator, X, in the first phosphor layer; and
wherein at least one of titanium, Ti; zirconium, Zr; hafnium, Hf; and rutherfordium, Rf, is used as a group 4 element dopant, Y, in the first phosphor layer.