Infinity Mirror Display Structure With Oblique Edge Backlight

The patent changes the light emission direction from perpendicular (one-dimensional approach) to oblique angles (multi-dimensional approach). By positioning light sources at the edges and directing light at oblique angles toward the liquid crystal display portion, multiple reflections are enabled between the display portion and the backlight, creating the infinity mirror image effect that cannot be achieved with perpendicular illumination alone.

The patent segments the backlight into multiple independent light sources positioned at different locations (edges and corners) rather than using a single uniform backlight. This segmentation allows each light source to be optimally positioned for creating infinity mirror images while maintaining overall structural manageability. The edge-type backlight design divides the illumination function into discrete, positionable units that can be strategically placed to maximize optical effects.

The patent makes the liquid crystal display portion serve multiple functions: it acts as both the display element and a reflection surface for creating the infinity mirror image. The backlight also serves dual purposes by providing both illumination for the display and oblique light paths for multiple reflections. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while still achieving enhanced depth perception.