3D Active Retarder With Light-Blocking Spacers for Crosstalk

The patent applies local quality by making the columnar spacers light-blocking rather than transparent. Specifically, the spacers are configured to block light in the vertical direction while allowing horizontal light transmission, creating different optical properties in different directions. This local light-blocking quality prevents light leakage between left and right eye images, thereby reducing crosstalk and improving 3D image separation quality without compromising the overall polarization control function

The patent segments the optical laminate into distinct functional regions: light-blocking columnar spacers, alignment films with specific rubbing directions, and liquid crystal layers. By segmenting the spacer function into light-blocking regions, the patent isolates the light-blocking function to specific areas (the spacers) while other regions maintain their polarization control functions, thereby preventing crosstalk while maintaining display quality balance

The patent merges the light-blocking function with the existing columnar spacer structure. Instead of adding separate light-blocking components, the spacers themselves are configured to block light in the vertical direction. This merging approach integrates the light-blocking function into the existing spacer framework, reducing device complexity while still achieving crosstalk reduction

The columnar spacers serve multiple functions: they maintain cell gap uniformity, control liquid crystal alignment, and block light in the vertical direction. By making the spacers light-blocking, the patent gives them a multi-functional role that eliminates the need for separate light-blocking components, thereby reducing structural complexity while achieving crosstalk reduction