Treyz Law Group, P.C.
Displays with direct-lit backlight units
An array of pixels in a display may be illuminated by a backlight having an array of light-emitting diodes in an array of respective cells. A reflector is used to reflect light from the light-emitting diodes through the array of pixels. Within the cells, the reflector has cross-sectional profiles that help distribute light emitted from the light-emitting diodes toward edges of the cells. A light diffuser layer for the backlight may have a partially reflective layer such as a thin-film interference filter with an angularly dependent transmission. Within each cell, the reflector may have cross-sectional profiles with portions that are parabolic or elliptical.
Apple Inc.
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Yu P. Xiangtong Yanming Abdeslam Mingxia Yi Jun Victor H. Rong Erik A. Ziruo
Sun Li Li Hafidi Gu Huang Qi Yin Liu Zweigle Hong