摘要:
The present invention discloses a single-level driver is programmed to generate a plurality of segment voltage signals. A multicolor backlight modulation device receives the segment voltage signals and modulating a portion of the segment voltage signals to generate a common voltage signal and at least two synchronous color-separation backlight driving signals driving a backlight source to emitting different-color backlights. The common voltage signal cooperates with the segment voltage signals to form voltage differences which drive a mono-pixel to turn on or turn off in a time-division mode and allow different-color backlights to pass the mono-pixel at the same time. The time-division different-color backlights are accumulated by vision persistence to present a chromatic effect on the mono-pixel. The resultant colors can be intelligently varied via programming the segment voltage signals to achieve diversified multicolor effects. Therefore, the present invention can enable mono-pixels to present multicolor effect with a single-level display chip.
摘要:
A dual-frequency bistable liquid crystal display and the liquid crystal mixture thereof includes liquid crystal cell filled with a liquid crystal mixture which contains dual-frequency liquid crystal, chiral compound, and nematic liquid crystal mixture. The liquid crystal mixture has the characteristics of both the dual-frequency liquid crystal and cholesteric liquid crystal. The dual-frequency bistable liquid crystal display is driven in a frequency modulation mode and can be switched between two optical states by taking advantage of the dielectric anisotropy of the liquid crystal, which results in a short switching time and sharp contrast between two optical states. Furthermore, the maintaining of the two optical states requires no voltage, which does not require the use of a high voltage to destabilize the helical structure of the cholesteric liquid crystal, and does not have to go through a metastable stage. Hence, power consumption and switching time are reduced.