Display element

A display element comprising:

• a light source;
• a light control element configured to control an amount of light from the light source;
• a phosphor layer configured to absorb the light transmitted through the light control element as excitation light, and generate light in a wavelength region different from a wavelength region of the light source;
• a functional optical film configured to reflect the light emitted from the phosphor layer;
• and
• a light extraction structure having a function of emitting the light emitted from the phosphor layer to a non-light source,
• wherein the light source has at least one maximum value in a range of wavelengths from 400 nm to 490 nm within an emission spectrum, and the light control element is a liquid crystal element interposed between a pair of polarization plates, and
• the functional optical film is a band pass filter including a dielectric multilayer film, having a region showing maximum transmittance in the range of wavelengths from 400 nm to 490 nm within a transmission spectrum, and having a reflection band in a region of longer wavelengths than a wavelength of 490 nm.

A display element comprising:

• a light source;
• a light control element configured to control an amount of light from the light source;
• a phosphor layer configured to absorb the light transmitted through the light control element as excitation light, and generate light in a wavelength region different from a wavelength region of the light source;
• a functional optical film configured to reflect the light emitted from the phosphor layer;
• and
• a light extraction structure having a function of emitting the light emitted from the phosphor layer to a non-light source,
• wherein the functional optical film is a band pass filter including a dielectric multilayer film, having a region showing maximum transmittance in the range of wavelengths from 400 nm to 490 nm within a transmission spectrum and having a reflection band in a region of longer wavelengths than a wavelength of 490 nm, and
• the light control element includes an MEMS.