Dual-Side Text Legibility in See-Through Display Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing see-through display devices require twice the display area to ensure legibility of textual information for both sides, and reducing the display area compromises text legibility.
Innovation Solution
A display device with a display panel configured to allow a mirror image of an image viewed from one side to be viewed from the other side, featuring alternating first and second areas with light-blocking patterns to optimize textual information display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display area is increased to ensure legibility of textual information for both sides, then the legibility is improved, but the device size and complexity increase
Solution Approach 1:
The display area is segmented into first areas and second areas with different light-blocking pattern configurations. First areas have patterns visible from the front side while second areas have patterns visible from the rear side, allowing each segment to optimize text legibility for its viewing direction without requiring the entire display to double in size
Solution Approach 2:
Different regions of the display are given different local characteristics through light-blocking patterns. The first areas are optimized for front-side viewing with appropriate light-blocking configurations, while second areas are optimized for rear-side viewing, allowing each local region to provide optimal text legibility for its specific viewing direction
2Area of stationary object
If the display area is reduced to maintain the same device size, then the device compactness is improved, but the text legibility deteriorates
Solution Approach 1:
By dividing the display into specialized first and second areas with direction-optimized light-blocking patterns, the system maintains adequate text legibility for both viewing sides without requiring a proportional increase in total display area, thus preserving device compactness
Solution Approach 2:
The solution addresses the legibility problem by adding a directional dimension to the light-blocking patterns rather than simply increasing display area. The patterns are configured to be visible from specific directions (front or rear), allowing dual-sided legibility within a compact footprint
3Measurement precision
If light-blocking patterns are added to improve text legibility, then the text visibility is improved, but the optical transparency of the display deteriorates
Solution Approach 1:
Light-blocking patterns are applied locally only in first and second areas where text display is required, rather than across the entire display. This localized approach provides text visibility where needed while minimizing the impact on overall display optical transparency and image quality
Solution Approach 2:
Light-blocking patterns are applied partially only to specific areas dedicated to text display rather than the entire display surface. This partial application achieves the necessary text visibility while excessive transparency is maintained in areas not requiring text overlay
Data Source
AI summary
According to an aspect, a display device includes a display panel that has a display area in which a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction and is configured to allow a mirror image of an image viewed in plan view from one side of the display area to be viewed from another side. At least a partial area of the display area includes: a plurality of first areas each of which is visible from the one side and has a surface on the other side configured to be shielded from light; and a plurality of second areas each of which is visible from the other side and has a surface on the one side configured to be shielded from light.