Bimetal Actuator Control for Display Shape Maintenance

The bimetal elements are pre-positioned and connected to the substrate at specific locations before use. When voltage is applied, these pre-positioned elements immediately produce the desired bending effect without requiring manual force application, and maintain the bent shape continuously as long as voltage is supplied.

The patent replaces manual mechanical force application with an electrical control system. Instead of requiring users to physically bend the display apparatus, voltage signals are applied to bimetal elements that automatically generate the bending motion through thermal expansion differences, enabling precise and maintainable shape control.

The bending control is divided into multiple independent bimetal elements distributed at different locations on the substrate. Each element can be controlled independently through separate voltage application, allowing complex bending patterns to be achieved by coordinating simpler individual element actions. This modular approach manages complexity by breaking down the overall bending function into manageable segments.

The patent controls the bending behavior by changing electrical parameters (voltage magnitude and timing) applied to the bimetal elements rather than changing the physical structure. By adjusting voltage levels, the degree and timing of bending can be precisely controlled, maintaining shape stability without adding mechanical complexity to the structure itself.