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We demonstrate one-dimensional beam steering in a liquid crystal on silicon (LCOS) device with a large birefringence ( $\Delta n$ = 0.2028 at 1550 nm) of the liquid crystal (LC) mixture. The experimental analysis of the optical beam steering angles at different LCOS grating periods is reported. A maximum beam steering angle of ±15.6° is measured for the fine grating pitch of $3.6 \mu \text{m}$ with a $1^{st}$ -order diffraction efficiency ( $\eta _{1}$ ) of 2.28%. Also, the experimental results obtained were verified with the grating equation and numerical simulation. The wide optical beam steering capabilities of our fabricated LCOS device show great potential applications in solid-state LiDAR for future autonomous vehicles.