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In this study, we focus on the bosonic decays of light charged Higgs boson(i.e., with $M_{H^\pm}<m_t$) in the 2-Higgs Doublet Model (2HDM) Type-I. Tostudy the signal of such a charged Higgs state at the Large Hadron Collider(LHC), in a scenario where the $H^0$ boson is the Standard Model (SM)-like onealready discovered, we assume that it decays mainly via $h^0W^{\pm *}$ and/or$H^\pm\to A^0W^{\pm *}$ (i.e., via an off-shell $W^{\pm}$ boson), which canreach a sizable Branching Ratio (BR) for $\tan\beta\geq4$, when the exclusionbounds from $H^\pm\to\tau\nu$ and $c{s}$ searches get weaker. By using sixBenchmark Points (BPs), which are consistent with current LHC constraints, weperform a Monte Carlo (MC) study and examine the sensitivity of the LHC tolight charged Higgs boson decaying via the above bosonic modes and produced intop decay following both single top and top pair production processes. Ourfindings demonstrate that, when the integrated luminosity can reach 100fb$^{-1}$, the LHC has the potential to either discover or rule out most ofthese BPs via either of these two production and decay channels or both.

Implications of light charged Higgs boson at the LHC Run III in the 2HDM