Electromagnetic Suspension for Adjustable Display Viewing Distance

The patent removes the glass spacer component entirely from the display device structure. Instead of using a physical spacer to maintain distance, the invention employs electromagnetic suspension to hold the grating panel at the required distance from the display panel, thereby eliminating the weight and volume associated with the glass spacer while maintaining structural stability through electromagnetic force.

The patent replaces the mechanical glass spacer system with an electromagnetic suspension system. The electromagnetic units generate magnetic fields to suspend the grating panel at a fixed distance from the display panel, substituting mechanical support with electromagnetic force to achieve the same structural stability function without the physical constraints of a glass spacer.

The patent implements a dynamic distance adjustment mechanism where electromagnetic units can vary the distance between the display panel and grating panel according to different viewing requirements. The system transitions from a static fixed-distance structure to a dynamic adjustable structure, allowing the viewing distance to be changed while maintaining manufacturing simplicity through electronic control rather than mechanical reconfiguration.

The patent enables changeable viewing distances by adjusting the electromagnetic field strength and control parameters of the electromagnetic units. By modifying electrical parameters (current, voltage, frequency) of the electromagnetic coils, the suspension force and consequently the distance between panels can be dynamically adjusted, providing viewing distance adaptability without complicating the manufacturing process.

The patent removes the glass spacer component that requires adhesive bonding, thereby eliminating the source of sealing defects. By using electromagnetic suspension instead of mechanical spacers, the system avoids the need for optical adhesives and the associated coating and solidification processes that cause macular coating defects and display moiré pattern defects on the edges.

The patent introduces electromagnetic field as an intermediary force to maintain the distance and positioning between display panel and grating panel without requiring physical contact or adhesive bonding. The electromagnetic units act as mediators that provide secure holding force without the need for chemical adhesives, thereby eliminating sealing defects while maintaining bonding strength equivalent to or exceeding mechanical attachment.