Fresnel Optical Sheet for Display Bezel Reduction

An optical sheet with Fresnel pattern is introduced as an intermediary component between the display panel and the viewer's eye. This optical sheet refracts light from the active area to redirect it toward the black matrix region, creating the illusion of extended display area and eliminating the visual obstruction caused by physical bezels. The Fresnel pattern acts as a light-guiding mediator that enables viewing images in front of the black matrix without requiring additional physical display space.

The patent replaces the mechanical approach of physically reducing bezel thickness with an optical solution using a Fresnel patterned optical sheet. Instead of mechanically narrowing the physical gap between displays to improve immersion, the optical sheet uses light refraction to create the visual effect of reduced bezel width. This substitution maintains structural integrity while achieving the desired visual improvement.

The patent applies parameter changes by varying the depth of the Fresnel pattern peaks and valleys across different regions. The depth is designed to gradually increase from the active area toward the black matrix, creating a gradient refraction effect. This parameter variation optimizes light redirection while managing optical complexity, as the Fresnel pattern can be manufactured using standard photolithography processes without requiring complex multi-layer structures.