A method of forming a light sheet includes depositing a reflective conductor layer over a substrate, printing a layer of microscopic inorganic LEDs on the conductor layer, depositing a first dielectric layer, having a first index of refraction, over the conductor layer and along sidewalls of the LEDs, and depositing a transparent conductor layer over the LEDs so that the LEDs are connected in parallel. The transparent conductor layer may be a wire mesh with openings. A liquid or paste polymer layer is then deposited over the transparent conductor layer and directly contacts the first dielectric layer. The indices of refraction of both layers are similar to reduce TIR. The top surface of the polymer layer is then molded to contain light extraction features to reduce waveguiding in the light sheet. In another embodiment, the substrate surface is the light exit surface that has the light extraction features.