Cholesteric Liquid Crystal Display Light Transmittance Control

The patent applies dynamics by implementing multiple driving modes (reflective mode and transparent mode) that allow the cholesteric liquid crystal display device to dynamically change its state. In transparent mode, the liquid crystal molecules are oriented to allow light passage, while in reflective mode, they are oriented to reflect light. This dynamic switching resolves the contradiction by enabling the device to adapt its optical properties based on operational requirements.

The patent employs parameter changes by modifying the driving voltage and frequency parameters to control the liquid crystal molecule orientation. By adjusting these electrical parameters, the display device can transition between reflective and transparent states, thereby controlling light transmittance to simultaneously achieve both high transmittance when needed and sufficient blocking when in reflective mode.

The patent implements dynamics through time-multiplexed driving where the display device alternates between reflective mode (for maintaining display function) and transparent mode (for allowing light passage to the transmissive display below). This temporal dynamic switching enables both functions to coexist without permanent conflict.

The patent applies periodic action by using frame-by-frame or field-by-field switching between reflective and transparent modes. During periods when the reflective display does not need to display content, it switches to transparent mode, creating a periodic cycle that maintains both reflective functionality and transparency as needed.