Optical film comprising first and second semi-transmissive films configured to transmit a linearly polarized light component and reflect a circularly polarized light component and display apparatus including the optical film

摘要

An optical film may include a polarizer configured to linearly polarize a first light to provide a linearly polarized light component. The optical film may further include a first semi-transmissive film overlapping the polarizer, configured to transmit the linearly polarized light component, and configured to reflect a first circularly polarized component of a second light. The first circularly polarized component of the second light may have a first wavelength. The optical film may further include a second semi-transmissive film overlapping the first semi-transmissive film, configured to transmit the linearly polarized light component, and configured to reflect a second circularly polarized component of the second light. The second circularly polarized component of the second light may have a second wavelength that is unequal to the first wavelength.

主权项

1. An optical film comprising:
a polarizer configured to linearly polarize a first light to provide a linearly polarized light component; a first semi-transmissive film on the polarizer, configured to transmit the linearly polarized light component, and configured to reflect a first circularly polarized component of a second light, the first circularly polarized component of the second light having a first wavelength; and a second semi-transmissive film on the first semi-transmissive film, configured to transmit the linearly polarized light component, and configured to reflect a second circularly polarized component of the second light, the second circularly polarized component of the second light having a second wavelength that is unequal to the first wavelength, wherein the first semi-transmissive film is disposed on the polarizer.