Stenciling phosphor layers on light emitting diodes
First Claim
1. A method for forming a luminescent layer on a light emitting semiconductor device, the method comprising:
- positioning a stencil on a substrate such that a light emitting semiconductor device disposed on said substrate is located within an opening in said stencil;
depositing a stenciling composition including luminescent material in said opening;
removing said stencil from said substrate; and
curing said stenciling composition to a solid state.
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Accused Products
Abstract
A method for forming a luminescent layer on a light emitting semiconductor device includes positioning a stencil on a substrate such that a light emitting semiconductor device disposed on the substrate is located within an opening in the stencil, depositing a stenciling composition including luminescent material in the opening, removing the stencil from the substrate, and curing the stenciling composition to a solid state. The resulting light emitting device includes a stack of layers including semiconductor layers comprising an active region and a luminescent material containing layer having a substantially uniform thickness disposed around at least a portion of the stack. A surface of the luminescent material containing layer not adjacent to the stack substantially conforms to a shape of the stack. In one embodiment, the light emitting device emits white light in a uniformly white spatial profile.
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Citations
9 Claims
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1. A method for forming a luminescent layer on a light emitting semiconductor device, the method comprising:
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positioning a stencil on a substrate such that a light emitting semiconductor device disposed on said substrate is located within an opening in said stencil; depositing a stenciling composition including luminescent material in said opening; removing said stencil from said substrate; and curing said stenciling composition to a solid state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification