Display and optical film

A multilayer continuous optical film comprising a plurality of layers numbering at least 20 in total, each of the layers having an average thickness of less than about 500 nm, the multilayer continuous optical film comprising pluralities of at least alternating first and second regions arranged along rows and columns of the first and second regions and configured to be aligned in one-to-one correspondence to a plurality of pixels of a display, such that for substantially normally incident light having a wavelength in a desired wavelength range extending from about 400 nm to about 2000 nm and for each of mutually orthogonal first and second polarization states:

• the first regions of the multilayer continuous optical film transmit at least 70% of the incident light having a first wavelength in the desired wavelength range and reflect at least 70% of the incident light having a second wavelength in the desired wavelength range;
• and
• the second regions of the multilayer continuous optical film reflect at least 70% of the incident light having the first wavelength and transmit at least 70% of the incident light having the second wavelength,
• wherein each layer in at least a majority of the plurality of layers extends continuously across each of a length and a width of the multilayer continuous optical film, the length and the width being orthogonal directions that are each orthogonal to a thickness direction of the multilayer continuous optical film.

A display comprising a plurality of blue, green and red light emitting pixels configured to display an image at an emission surface of the display and having respective blue, green and red emission spectra comprising respective blue, green and red emission peaks at respective blue, green and red peak wavelengths, each light emitting pixel comprising:

• a blue light emitting source having substantially the blue emission spectrum comprising the blue emission peak at the blue peak wavelength;
• a multilayer optical film disposed between the emission surface and the blue light emitting source and comprising a plurality of layers numbering at least 10 in total, each layer having an average thickness less than about 500 nm, such that for substantially normally incident light and for each of mutually orthogonal first and second polarization states:
• the plurality of layers in each blue light emitting pixel transmits at least 70% of the incident light having the blue peak wavelength;
• and
• the plurality of layers in each of the green and red light emitting pixels reflects at least 70% of the incident light having the blue peak wavelength and transmits at least 70% of the incident light for each of the green and red peak wavelengths;
• and
• a circular polarizer disposed between the emission surface and the multilayer optical film, the circular polarizer comprising an absorbing polarizer and a retarder.