| abstract |
One embodiment of the invention provides a backlight (26) for an LCD panel (14).nThe backlight (26) uses a two-dimensional array of single color or white LEDs (24) and ancover plate (40), e.g. a diffuser (28) or a cover plate (40) coated with a phosphor layer (39).nVarious electrical connections of the LEDs (24), variousnphosphor color-conversion techniques and light sensors (34) placed to measure the luminancenuniformity over the backlight (26) are described. |