  Given an holomorphic Higgs bundle on a compact Riemann surface of genus
greater than one, we construct a DQ-module supported by the spectral curve
associated to this bundle. Then, we relate quantum curves arising in various
situations (quantization of spectral curves of Higgs Bundles, quantization of
the $A$-polynomial...) and DQ-modules and show that DQ-modules provide a
suitable framework to study the quantization of spectral curves.
