Display front panel device

A method of forming a pixel structure of a display device panel stack, the method comprising:

• forming a down-conversion panel comprising a plurality of sub-pixels, the plurality of sub-pixels configured to down-convert ultraviolet light into a plurality of visible wavelength bands;
• forming a pixel defining structure on the down-conversion panel, the pixel defining structure defining the plurality of sub-pixels;
• and
• disposing a light array panel overlying the down-conversion panel, the light array panel comprising a plurality of individually addressable ultraviolet light sources,
• wherein an inner surface of the down-conversion panel is separated from the plurality of individually addressable ultraviolet light sources by a distance of at least 2 μm, and the pixel defining structure extends from the inner surface of the down-conversion panel to contact the light array panel.

A pixel structure of a display device panel stack, comprising:

• a first panel, comprising a plurality of ultraviolet light sources disposed on a backplane, the plurality of ultraviolet light sources being individually addressable;
• and
• a second panel, coupled with the first panel, the second panel having an inner surface facing the ultraviolet light sources, the second panel comprising:
• a transparent substrate;
• a pixel defining structure defining a plurality of sub-pixels on the transparent substrate, wherein the pixel defining structure comprises a reflective film disposed on a black matrix;
• and
• a down-conversion layer overlying the transparent substrate in each sub-pixel, the down-conversion layer comprising a phosphor material of a plurality of phosphor materials configured to down-convert ultraviolet light into visible light,
• wherein the plurality of ultraviolet light sources and the inner surface of the second panel are separated by a distance of at least 2 μm and less than 20 μm.