To gain a uniform distribution of the output light
Overview of the backlight unit with an LED in the corner
A single LED attached to the corner of the light guide plate (LGP) illuminates the whole emitting area of the backlight unit.
Scheme of the microstructure distribution
Microstructure elements are aligned to form concentric arcs. Orientation of each element can be different to control light propagation inside the LGP.
Shapes and distributions of microstructure elements
(left) Initial shape (upper) and distribution (lower) of the microstructure
(right) Final shape and distribution. Dimensions and orientation of the elements are designed to vary while their coordinates are fixed
Luminance distributions before and after the design
(upper right) Initial luminance distribution on the output surface as a grayscale image
(lower left) Final luminance distribution. Uniformity of the output light has been improved
Overview of the backlight unit with an LED in the corner
Scheme of the microstructure distribution
Shapes and distributions of microstructure elements
Luminance distributions before and after the design