Patent ID: 8987985
Filing Date: 2015-03-24
Classification: H01L

Abstract:
1. A device for producing light, comprising: a first reflective layer formed above a first surface of a glass substrate; a first electrode formed above the first surface of the glass substrate; an organic film layer formed above the first electrode; a second electrode formed above the organic film layer; a second reflective layer formed above the organic film layer, wherein a cavity is formed by the first reflective layer and the second reflective layer such that light generated in the organic film layer within the cavity is reflected back into the cavity by the second reflective layer and partially reflected back into the cavity by the first reflective layer so as to create a cavity effect, wherein the cavity effect causes light having a desired wavelength to resonate within the cavity, wherein the desired wavelength is in the range of about 430 nm to about 500 nm; and a layer incorporating two or more phosphors below a second surface of the glass substrate, wherein a portion of the light from the cavity incident on the first reflective layer passes through the first reflective layer and passes through the glass substrate, wherein the light exiting the second surface of the glass substrate having the desired wavelength passes through the layer incorporating two or more phosphors, wherein a portion of the light having the desired wavelength exits the device as output light, wherein a portion of the light having the desired wavelength excites the two or more phosphors and causes light of two or more additional wavelengths to be generated as output light from the device, wherein a spacing between the first reflective layer and the second reflective layers is such that light having the desired wavelength resonates within the cavity, wherein the resonance within the cavity and the layer incorporating two or more phosphors below the second surface of the glass substrate enhance the intensity of the output light, wherein the output light from the device is substantially white.