"The bare liquid crystal panel was affixed to the base plate, held in direct contact with the first LCD at a fixed lateral offset. As assembled, the front polarizer on the bottom LCD is crossed with the rear polarizer on the top LCD. Rather than remove the polarizers from the thin glass panels, we placed quarter-wave retarder film between the two (American Polarizers APQW92-004-PC-140NMHE): rotating the polarization state to restore the operation of the top LCD."
It's probably extremely basic knowledge for people familiar with polarization, but I didn't know it could be so simple.
"The bare liquid crystal panel was affixed to the base plate, held in direct contact with the first LCD at a fixed lateral offset. As assembled, the front polarizer on the bottom LCD is crossed with the rear polarizer on the top LCD. Rather than remove the polarizers from the thin glass panels, we placed quarter-wave retarder film between the two (American Polarizers APQW92-004-PC-140NMHE): rotating the polarization state to restore the operation of the top LCD."
It's probably extremely basic knowledge for people familiar with polarization, but I didn't know it could be so simple.