Direct backlighting for liquid crystal displays

摘要

A system and method for backlighting a liquid crystal display consisting of a planar array of uniformly distributed light emitting diodes (LEDs) with segmentation, each LED illuminating one or more colors of a picture element (pixel) or group of pixels. By controlling the current through each LED, infinite variations in intensity and color can be locally generated according to LCD addressing schemes and contents. High quality moving pictures can be generated by incorporating multiple row addressing and LED sequencing. The LED backlight addressing and driving method can be designed and synchronized with the LCD panel row and column driving scheme.