  In order to extract the polarized strange quark density in proton, we studied
the semi-inclusive $\Lambda_c$/$\bar{\Lambda}_c$ leptoproduction in charged
current DIS at THERA energies. We indicate that measurements of the spin
correlation between the incident proton and the produced
$\Lambda_c$/$\bar{\Lambda}_c$ baryon gives us information about the polarized
strange quark distribution.
