Lenovo 4XJ1M77973 display privacy filter 35.6 cm (14") Laptop Frameless display privacy filter14" Bright Screen Privacy Filter for X1 Carbon Gen9 from 3M The Lenovo 14" Bright Screen Privacy Filter for X1 Carbon Gen9 from 3M offers world class privacy without substantial tradeoffs in brightness or security. On average, 25% brighter than the standard 3M black privacy filters. Proprietary nanolouvre technology enables 85% transmission of the device's brightness. The Lenovo 16" Bright Screen Privacy Filter for P16 T16 Gen1 from 3M also blocks 35%