LIGHT FIELD SIMULATION TECHNIQUES FOR DUAL MODULATION

摘要

Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine transmission of the second light through individual color subpixels of the display. These LCD modulation drive signals can be adjusted based on one or more light field simulations to account for non-uniform, spatial color shifts. The light field simulation can be computed using a plurality of separable 2D point spread functions, where each 2D point spread function can be modeled as two separable ID functions, each ID function being approximated by a sum of limited number of terms.