Light field display apparatus

A light field display apparatus comprising:

• a display panel comprising a plurality of sub-pixels arranged in a matrix;
• and
• a micro lens array disposed on the display panel, the micro lens array comprising a plurality of micro lenses,
• wherein each of the plurality of sub pixels emits light of a single color, of a set of primary colors,
• wherein mixed color light of the sub-pixels corresponding to same positions of each of the adjacent micro lenses is white,
• wherein the micro lens has a hexagonal shape, and adjacent sides of two micro lenses make contact with each other to form a honeycomb structure,
• wherein the sub-pixels comprises a plurality of red sub pixels, a plurality of green sub-pixels and a plurality of blue sub pixels which are alternately arranged in the first direction, and same color of sub-pixels are continuously arranged in the second direction to form a stripe pattern,
• wherein the micro lenses are arranged at a tilt angle with respect to the first direction and the second direction, respectively,
• wherein the tilt angle is determined by the following equation 1,
• tilt angle =tan−1[(sub-pixel vertical pitch)/((number of horizontal viewpoints)*(sub-pixel horizontal pitch)], [equation 1]
• where, the sub-pixel vertical pitch is a distance in the second direction between centers of the two adjacent sub-pixels, the sub-pixel horizontal pitch is a distance in the first direction between centers of the two adjacent sub-pixels, the number of horizontal viewpoints is the number of sub-pixels in a horizontal pitch, and the horizontal pitch a distance in the first direction between centers of the two adjacent micro lenses,
• wherein the number of horizontal viewpoints is 2n+2,(n=1, 2, 3 . . . ), a number of vertical viewpoints is the number of sub-pixels in a vertical pitch, the vertical pitch is a distance in the second direction between centers of the two adjacent micro lenses, and the number of vertical viewpoint is a natural number close to the value of horizontal viewpoints/3, and
• wherein the number of horizontal viewpoints is 14, and the number of vertical viewpoints is 5.

A light field display apparatus, comprising:

• a display panel comprising a plurality of sub pixels arranged in a matrix form;
• and
• a micro lens array disposed on the display panel comprising a plurality of micro lenses, each of which having six corners,
• wherein each of the plurality of sub-pixels emits light of a single color, of a set of three primary colors including a first primary color, a second primary color, and a third primary color,
• wherein light of the sub-pixels corresponding to same positions of three or four micro lenses of the plurality of micro lenses which are make contact to each other, combines to form white light, or wherein light of the sub-pixels corresponding to same positions of the three micro lenses of the plurality of micro lenses, the three micro lenses comprising two micro lenses contacting each other and one micro lenses spaced apart from the two micro lenses by one additional micro lens of the plurality of micro lenses, combines to form white, and
• wherein for each micro lens of the plurality of micro lenses, at least a first corner of the six corners overlaps a sub-pixel of first primary color, at least second corner of the six corners overlaps a sub-pixel of the second primary color, and at least a third corner of the six corners overlaps a sub-pixel of the third primary color.