Device and system for a multi-color sequential LCD panel wherein the number of colors in a sequence of display colors is greater than the number of LED colors

摘要

A sequential color LCD device for displaying a color image using at least four different primary colors, with back illumination system comprising of at least three color LEDs. The device is capable of activating at least two color LEDs simultaneously, thus obtaining additional display colors. A method is disclosed for displaying more than three colors using an LCD device having three color LEDs, in which the LED back illumination system sequentially illuminates the LC array with only a first single LED color, a simultaneous operation of first and second LED colors, and then only the second LED color. The device may drive the LC cells from a first color data value directly to a subsequent color data value directly, without driving the LC cell to zero transmittance prior to loading of the subsequent color data value. The device may correct for color phase shift and for the dependency of apparent color intensity.

主权项

1. A liquid crystal display (LCD) device comprising:
an array of liquid crystal (LC) cells, an array of light emitting diodes (LEDs) positioned to back-illuminate said LC array, said array of LEDs comprising LEDs of at least three colors, an illumination control system operably connected to said LED array, said illumination control system being programmed to:
present a sequence of display colors by selectively activating the LED array in a sequence, wherein the number of colors in the sequence is greater than the number of LED colors, andwherein for at least part of the sequence, said illumination control system is to operate LEDs of two different colors simultaneously, with the duration of operation of LEDs of at least one color of said two different colors being substantially longer than one third of the sequence period.