TECHNIQUES FOR DUAL MODULATION DISPLAY WITH LIGHT CONVERSION

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 into second light. The light conversion layer can include quantum dots or phosphor materials. Modulation drive signals are generated to determine transmission of the second light through individual subpixels of the display. These modulation drive signals can be adjusted based on one or more light field simulations. The light field simulations can include: (i) a color shift for a pixel based on a point spread function of the illumination sources; (ii) binning difference of individual illumination sources; (iii) temperature dependence of display components on performance; or (iv) combinations thereof.

主权项

1. A method for driving a local-dimming display comprising:
generating, based on image data, backlight drive signals to drive individually controllable illumination sources of a backlight, emitting first light by one or more of the individually controllable illumination sources onto a light conversion layer, the first light including at least one of UV spectral components or blue light spectral components; converting the first light and recycled light into second light by the light conversion light layer, the light conversion layer includes at least one of quantum dots or phosphor materials; generating, based on image data, modulation drive signals to determine transmission of the second light through individual subpixels of the display; determining a color shift for a pixel based upon one or more of the backlight drive signals and respective distances between the pixel and one or more illumination sources; and adjusting an modulation drive signal for at least one subpixel of the pixel based on the determining to reduce the color shift of the pixel.