A 2D vermiculite (VMT) liquid crystalline dispersion with an anomalously large Kerr coefficient of 3.0 × 10⁻⁴ m V⁻² has been developed. This is an order of magnitude higher than all known media. The dispersion exhibits a large geometrical anisotropy factor and intrinsic ferroelectricity, which together contribute to the giant Kerr coefficient. The Kerr coefficient K is proportional to P²γ⁴, where P is the intrinsic polarization and γ is the geometrical anisotropy factor. This finding enables ultra-low operational electric fields (10²–10⁴ V m⁻¹) and the fabrication of electro-optical devices with inch-level electrode separation, which has not previously been practical. The dispersion also has high ultraviolet stability, large-scale production, and energy efficiency, allowing the fabrication of prototypical displayable billboards for outdoor interactive scenes. The study provides new insights for both liquid crystal optics and two-dimensional ferroelectrics. The 2D VMT dispersion was prepared by exfoliating bulk layered minerals and cation-exchange methods. The dispersion exhibits liquid crystalline properties, including phase transitions and birefringent textures. The polarization of the dispersion was measured using PFM and showed ferroelectric characteristics. The polarization was found to be 0.03 μC cm⁻², and the inherent electric dipole was calculated to be 1.7 × 10⁻²³ C m. The study also demonstrated the potential of the 2D VMT dispersion for large-scale devices with low energy consumption, as the operational electric field can be reduced from 10⁶ V m⁻¹ to 10²–10⁴ V m⁻¹. The dispersion was used to fabricate a 1.4-inch displayable pixel with two working modes, and the device showed high uniformity, low power consumption, and negligible ultraviolet degradation. The study also compared the 2D VMT dispersion with other electro-optical materials and electrochromic techniques, showing its advantages in terms of operational electric field, UV stability, and response time. The results indicate that the 2D VMT dispersion has the potential to serve as a promising complement to existing materials and techniques in the field of electro-optics.A 2D vermiculite (VMT) liquid crystalline dispersion with an anomalously large Kerr coefficient of 3.0 × 10⁻⁴ m V⁻² has been developed. This is an order of magnitude higher than all known media. The dispersion exhibits a large geometrical anisotropy factor and intrinsic ferroelectricity, which together contribute to the giant Kerr coefficient. The Kerr coefficient K is proportional to P²γ⁴, where P is the intrinsic polarization and γ is the geometrical anisotropy factor. This finding enables ultra-low operational electric fields (10²–10⁴ V m⁻¹) and the fabrication of electro-optical devices with inch-level electrode separation, which has not previously been practical. The dispersion also has high ultraviolet stability, large-scale production, and energy efficiency, allowing the fabrication of prototypical displayable billboards for outdoor interactive scenes. The study provides new insights for both liquid crystal optics and two-dimensional ferroelectrics. The 2D VMT dispersion was prepared by exfoliating bulk layered minerals and cation-exchange methods. The dispersion exhibits liquid crystalline properties, including phase transitions and birefringent textures. The polarization of the dispersion was measured using PFM and showed ferroelectric characteristics. The polarization was found to be 0.03 μC cm⁻², and the inherent electric dipole was calculated to be 1.7 × 10⁻²³ C m. The study also demonstrated the potential of the 2D VMT dispersion for large-scale devices with low energy consumption, as the operational electric field can be reduced from 10⁶ V m⁻¹ to 10²–10⁴ V m⁻¹. The dispersion was used to fabricate a 1.4-inch displayable pixel with two working modes, and the device showed high uniformity, low power consumption, and negligible ultraviolet degradation. The study also compared the 2D VMT dispersion with other electro-optical materials and electrochromic techniques, showing its advantages in terms of operational electric field, UV stability, and response time. The results indicate that the 2D VMT dispersion has the potential to serve as a promising complement to existing materials and techniques in the field of electro-optics.