Patent ID: 7955465

Claim:
A method of manufacturing a display element that includes: a light emitting unit that is provided on a standard plane, and supplies light; and an angle converting unit including: a prism structure having a reflection surface that is provided on a periphery of the light emitting unit, and reflects the light supplied from the light emitting unit, an output surface that outputs the light from the light emitting unit and the reflection surface, and a flat surface that is parallel with the output surface and provided between adjacent reflection surfaces, the method comprising: forming a geometrical shape of the angle converting unit that satisfies a following inequality 0 ≦t<p ( p−d−f )(tan θ a )/( p+d−f ) where t is a distance between the flat surface and the output surface, p is a pitch at which the light emitting unit is arranged in a predetermined direction, d is a length of the light emitting unit in the predetermined direction, f is a length of the flat surface in the predetermined direction, and θa is an angle between the reflection surface and the standard plane.