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US 10,256,377 B2Granted
Light-emitting device and image display apparatus
AssigneeSharp Kabushiki Kaisha
InventorsNoriyuki Yamazumi, Tatsuya Ryohwa, Kenichi Yoshimura, Hiroshi Fukunaga, Kanako Nakata, Makoto Izumi
Life of this patent
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Abstract
A light-emitting device includes a light-emitting element configured to emit excitation light, and a phosphor layer in which phosphor particles are dispersed so as to emit fluorescence in response to the excitation light. The phosphor layer includes a constitutional unit derived from an ionic liquid having a polymerizable functional group. The light-emitting device further includes a protective layer that seals the light-emitting element therein.
Claims18
A light-emitting device comprising:
- an excitation light source configured to emit excitation light;
- a phosphor layer in which a semiconductor nanoparticle phosphor is dispersed so as to emit fluorescence in response to the excitation light, the phosphor layer including a constitutional unit derived from an ionic liquid having a polymerizable functional group;
- and
- a protective layer that seals the excitation light source therein, wherein
- the phosphor layer contains sulfur as a constituent element.
2 more elements
Dependencies are inferred from the claim text.