Patent ID: 6834131
Filing Date: 2004-12-21
Classification: G02B,H05K

Abstract:
A method for integrating an optical layer in a printed circuit board wherein the printed circuit board comprises an insulating material to which a first layer of copper foil is bonded, the method comprising:preparing the printed circuit board; laminating onto the copper layer a layer of first polymer material having a refraction index of n2; laminating onto the layer of first polymer a layer of second polymer material having a refraction index of n1, where n1 is greater than n2; creating a channel through the layers of first and second polymer material; laminating a top layer of the first polymer material so as to fill the channel and cover the remaining layer of second polymer material; laminating onto the top layer a layer of prepreg material; and laminating onto the prepreg material a second layer of copper foil.