Display Light Blocking Structures for Visual Fatigue Reduction

The patent implements dynamic adjustment of light transmittance through movable light blocking plates that can change their position and transmittance characteristics in real-time. The light blocking plates are driven by drive mechanisms (such as piezoelectric actuators or micro-electromechanical systems) to dynamically modify the amount of light passing through each sub-pixel, enabling the display to adapt its brightness characteristics during operation to reduce visual fatigue while maintaining visibility.

The patent changes the transmittance parameter of the light blocking structures by using materials or configurations that can alter their optical properties. The light blocking plates may use materials with variable transmittance characteristics or change their physical state (such as phase transition materials) to modify light transmission, thereby adjusting display brightness without increasing overall light output, thus reducing visual strain.

The patent integrates the light blocking plates within the existing display substrate structure, nesting them between the color filter and the liquid crystal layer or within the pixel electrode structure. This nested configuration allows the light blocking functionality to be incorporated into the existing display architecture without adding significant external components, thereby reducing the increase in device complexity while maintaining visual acuity protection capabilities.

The light blocking plates serve multiple functions: they control light transmittance for visual acuity protection, enable local brightness adjustment for display optimization, and can potentially serve as addressing electrodes for pixel control. By making these components multi-functional, the patent reduces the need for separate dedicated structures for each function, thereby minimizing the increase in device complexity.

The patent divides the light blocking structure into multiple discrete plates or regions, each with specific transmittance characteristics. These segmented light blocking elements can be independently controlled and positioned, allowing precise adjustment of light transmittance at different locations and levels. The segmentation enables fine-grained control over light transmission while allowing each segment to be manufactured using standardized processes.

The patent applies different transmittance characteristics to different local regions of the display by using light blocking plates with spatially varying optical properties. Each plate or region is optimized with specific transmittance values tailored to local display requirements, enabling precise local adjustment of light transmission. This local quality approach allows manufacturing precision to be achieved through targeted optimization rather than uniform high-precision manufacturing throughout.