Stereoscopic Display Backlight Control for 3D Crosstalk Reduction

The patent applies preliminary action by inserting black frames before the actual image frames. Specifically, a black frame is inserted before the left-eye image frame and another black frame is inserted before the right-eye image frame. This preliminary black frame insertion allows the liquid crystal molecules in the shutter glasses to reset to their initial state before displaying the next eye's image, preventing residual effects from the previous frame that cause crosstalk and ghost images.

The patent applies partial action by selectively inserting black frames only where necessary to prevent crosstalk, rather than continuously displaying black screens. The black frames are inserted specifically before left-eye and right-eye frames to allow liquid crystal reset, but the system maintains high image display efficiency by alternating between black frames and colored image frames in a controlled sequence, ensuring that black frames occupy only the minimum necessary time portion.

The patent applies preliminary action by providing a black frame interval before each eye's image frame. This black frame serves as a preliminary reset period that allows liquid crystal molecules to return to their initial state before the next image is displayed. By doing so, the system reduces the required response time for the liquid crystal shutter while still preventing ghost images, as the black frame provides the necessary reset time without requiring the liquid crystal to switch faster.