Display Device Light-Shielding Layer Overlap Lens Ends
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Solution Overview
Problem
Display devices without a barrier element suffer from multiple image formation due to light mixing from adjacent pixels, resulting in reduced image reality and increased image shift with viewing angle changes.
Innovation Solution
Incorporating a barrier element with light-shielding layers that overlap the end portions of lenses, effectively shielding light from adjacent pixels and maintaining the ratio of main light rays to neighboring light rays, thereby preventing multiple image formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a barrier element is added to prevent light mixing from adjacent pixels, then multiple image formation is prevented and image reality is improved, but device complexity increases
Solution Approach 1:
A light-shielding layer is introduced as an intermediary element between the lens and the barrier element. This light-shielding layer selectively blocks neighboring light rays from adjacent pixels before they can mix with main light rays, thereby preventing multiple image formation and improving image reality without requiring a complete redesign of the barrier structure
Solution Approach 2:
The light-shielding layer is positioned specifically at regions where neighboring light rays from adjacent pixels would interfere with the main image. Rather than uniformly blocking all light, the shielding is applied locally only where needed to prevent light mixing, thus maintaining image quality while minimizing added complexity
2Adaptability or versatility
If viewing angle changes, then stereoscopic viewing capability is improved, but image shift increases and image stability deteriorates
Solution Approach 1:
The optical path is segmented into distinct regions: main light rays from the target pixel and neighboring light rays from adjacent pixels. The light-shielding layer is configured to selectively block neighboring light rays while allowing main light rays to pass through, ensuring that image stability is maintained across different viewing angles while preserving stereoscopic viewing capability
3Reliability
If light extraction directions are limited to prevent multiple image formation, then image reality is improved, but light transmission is reduced and brightness decreases
Solution Approach 1:
The light-shielding layer acts as an intermediary that selectively filters light based on its origin. It blocks only neighboring light rays from adjacent pixels while allowing main light rays from the target pixel to pass through unaffected, thus preventing multiple image formation without significantly reducing overall brightness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution prevents multiple image formation, maintains image reality, and ensures a stable image appearance across varying viewing angles by efficiently limiting light extraction directions and reducing neighboring light ray interference.
Implementation Method 1
each of the plurality of light-shielding layers overlaps an end portion of each respective one of the plurality of lenses
Data Source
AI summary
According to one embodiment, a display device includes a lens element including a plurality of lenses, a barrier element including a plurality of light-shielding layers and a display panel, and the lens element is provided between the display panel and the barrier element, each of the plurality of light-shielding layers overlaps an end portion of each respective one of the plurality of lenses. When the region between each adjacent pair of the light-shielding layers is an aperture, the barrier element has a plurality of apertures.