3D Display Panel Lens Array for Reflectivity
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Solution Overview
Problem
Conventional reflective liquid crystal display panels suffer from low reflectivity when using ambient light, and even lower reflectivity when a front light guide is used as a light source due to large extraction angles, resulting in inefficient light utilization.
Innovation Solution
A three-dimensional display panel design featuring a reflective display substrate, a transparent display substrate, and a lens array layer that directs light reflected by pixels into specific view zones, improving reflectivity by refracting and reflecting light at smaller angles, and optionally includes a light guide plate for enhanced light utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a front light guide is used as a light source, then the display panel can provide incident light, but the reflectivity becomes very low due to large extraction angles causing inefficient light utilization
Solution Approach 1:
The patent segments the display panel into multiple view zones corresponding to different pixel groups, with each lens directing light from specific pixels to specific view zones. This segmentation enables precise control of light paths, allowing the system to achieve high reflectivity by directing light at optimal angles while maintaining the ability to provide incident light through the light guide plate.
Solution Approach 2:
The patent applies local quality by creating different optical paths for different regions of the display panel. Each lens in the lens array has specific optical properties tailored to direct light from its corresponding pixels to specific view zones. This local optimization ensures that light is utilized efficiently at each location, achieving high reflectivity locally while maintaining overall system functionality.
2Adaptability or versatility
If ambient light is used for display, then the display panel can operate without additional light sources, but the reflectivity remains low due to inefficient light utilization
Solution Approach 1:
The patent creates a universal light directing system that functions effectively with both ambient light and light guide plate illumination. The lens array is designed to work with light from any direction, enabling the display panel to maintain high reflectivity and operational flexibility across different lighting conditions and light sources.
3Adaptability or versatility
If light is directed into multiple view zones, then three-dimensional display capability is achieved, but the light utilization efficiency decreases due to light being dispersed across multiple directions
Solution Approach 1:
The patent segments the light distribution into distinct view zones, with each lens directing light to specific zones. This segmentation allows the system to provide multi-view three-dimensional capability while maintaining high light utilization efficiency by ensuring that light is directed precisely where needed rather than being wasted in unnecessary directions.
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 design significantly enhances light utilization and reflectivity, achieving up to 171.27% average reflectivity by directing light at optimal angles, thereby improving the display panel's efficiency in both high and low ambient light conditions.
Implementation Method 1
the lens array layer is configured so that incident light from a light source along an incident light direction is refracted by the lens array layer, light transmitted through the lens array layer transmits along a refracted light direction
Implementation Method 2
a first display substrate having a plurality groups of M pixels, the first display substrate being a reflective display substrate
Data Source
AI summary
A three-dimensional display panel includes a first display substrate having a plurality groups of M pixels, the first display substrate being a reflective display substrate; a second display substrate facing the first display substrate, the second display substrate being a transparent display substrate; and a lens array layer on a side of the second display substrate distal to the first display substrate having a plurality of lenses capable of directing light reflected by each of the M pixels into one of N view zones on a side of the lens array layer distal to the second display substrate; M is an integer ≥2; N is an integer ≥2.