Patent ID: 8785960
Filing Date: 2014-07-22
Classification: H01L,H05B,Y02E

Abstract:
1. A composite wafer comprising: a solid volume of a polymeric binder having a first surface and a second surface opposite the first surface; suspended within the polymeric binder, a plurality of semiconductor dies each (i) having a first face, a second face opposite the first face, and at least one sidewall spanning the first and second faces, and (ii) being a bare-die light-emitting element comprising a plurality of active semiconductor layers that cooperatively emit light; a reflecting layer disposed on a surface of the polymeric binder or disposed within at least a portion of the polymeric binder proximate at least one semiconductor die; and disposed on the first face of each semiconductor die, at least two spaced-apart contacts each having a free terminal end (i) at least a portion of which is not covered by the polymeric binder and (ii) available for electrical connection, the contacts each contacting a different active semiconductor layer of the semiconductor die, wherein (i) at least a portion of the polymeric binder is transparent to a wavelength of light emitted by at least one of the semiconductor dies, and (ii) the reflecting layer has a reflectivity of at least 50% to a wavelength of light emitted by at least one semiconductor die.