Illumination assembly and method of making same
Assignee3M Innovative Properties Company
InventorsAndrew Ouderkirk, Michael Meis, Hung Tran, Joseph Hoffman
Life of this patent
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Abstract
An illumination assembly including a thermally conductive substrate, a reflective layer proximate a first major surface of the thermally conductive substrate, a patterned conductive layer positioned between the reflective layer and the first major surface of the thermally conductive substrate and electrically isolated from the thermally conductive substrate, and at least one LED including a post that is attached to the thermally conductive substrate is disclosed. The at least one LED can be thermally connected to the thermally conductive substrate through the post and electrically connected to the patterned conductive layer.
Claims25
An illumination assembly, comprising:
- a thermally conductive substrate comprising a first major surface;
- a reflective layer proximate the first major surface of the thermally conductive substrate;
- a patterned conductive layer positioned between the reflective layer and the first major surface of the thermally conductive substrate and electrically isolated from the thermally conductive substrate;
- and
- at least one LED comprising a post that is attached to the thermally conductive substrate, wherein the at least one LED is thermally connected to the thermally conductive substrate through the post and electrically connected to the patterned conductive layer.
A method of making an illumination assembly, comprising:
- providing a thermally conductive substrate comprising a first major surface;
- positioning a patterned conductive layer proximate the first major surface of the thermally conductive substrate such that the patterned conductive layer is electrically isolated from the thermally conductive substrate;
- positioning a reflective layer such that the patterned conductive layer is between the reflective layer and the first major surface;
- providing at least one LED comprising a post;
- and
- attaching the at least one LED to the thermally conductive substrate such that the at least one LED is adjacent the reflective layer, wherein the at least one LED is thermally connected to the thermally conductive substrate through the post and electrically connected to the patterned conductive layer.
A display, comprising:
- An illumination assembly, comprising:
- a thermally conductive substrate comprising a first major surface;
- a reflective layer proximate the first major surface of the thermally conductive substrate;
- a patterned conductive layer positioned between the reflective layer and the first major surface of the thermally conductive substrate and electrically isolated from the thermally conductive substrate;
- and
- at least one LED comprising a post that is attached to the thermally conductive substrate, wherein the at least one LED is thermally connected to the thermally conductive substrate through the post and electrically connected to the patterned conductive layer;
- and
- a spatial light modulator optically coupled to the illumination assembly, wherein the spatial light modulator comprises a plurality of controllable elements operable to modulate at least a portion of light from the illumination assembly.
Dependencies are inferred from the claim text.