Display element and method for manufacturing a display element
AssigneeLumineq Oy
InventorsJani Holopainen, Kari Härkönen
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Abstract
This disclosure relates to use of group 4 element codoping in a phosphor layer of activator-doped zinc sulfide of a display element, a display element, and a method for manufacturing a display element. The display element (100) comprises a first insulator layer (111), a second insulator layer (112), and a first phosphor layer (121) of activator-group 4 element codoped zinc sulfide between the first insulator layer (111) and the second insulator layer (112). The first phosphor layer (121) has an average atomic percentage of group 4 elements of at least 0.01 atomic percent.
Claims16
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.
A method comprising:
- using a display element for displaying,
- wherein the display element comprises at least a first phosphor layer of an activator-group 4 element codoped zinc sulfide, ZnS:X,Y;
- 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.
A method for manufacturing a display element, the method comprising:
- forming a first insulator layer;
- forming a first phosphor layer of activator-group 4 element codoped zinc sulfide, ZnS:X, Y;
- and
- forming a second insulator layer such that the first phosphor layer is arranged 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.
Dependencies are inferred from the claim text.