Privacy Display Light Modulation Structure for Brighter Sharing Mode
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Solution Overview
Problem
Existing display products with peep-proof functions suffer from low display brightness in sharing mode, affecting user experience due to limited viewing angles and inefficient light modulation.
Innovation Solution
A display device with a light modulation portion comprising a refractive index variable material layer, light modulation microstructure, and electrode layers, which allows for efficient switching between peep-proof and sharing states by varying the refractive index and light dispersion properties, reducing driving voltage and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light modulation portion with refractive index variable material layer is used to achieve peep-proof function, then privacy protection is improved, but display brightness in sharing mode deteriorates
Solution Approach 1:
The patent applies dynamics by making the light modulation microstructure adjustable between different states. The microstructure can dynamically change its light modulation characteristics based on applied voltage, switching between peep-proof state (when voltage is applied, light is modulated to prevent side viewing) and sharing state (when voltage is removed, light passes through for wide-angle viewing). This dynamic adjustment resolves the contradiction by allowing the system to optimize for either privacy or brightness depending on the operational mode.
Solution Approach 2:
The patent utilizes parameter changes by varying the refractive index of the liquid crystal material in the light modulation portion. When voltage is applied, the refractive index changes to modulate light and achieve peep-proof effect. When voltage is removed, the refractive index returns to its original state, allowing light to pass through for bright display in sharing mode. This parameter change enables the system to switch between the two contradictory requirements.
2Ease of manufacture
If traditional light modulation structures are used, then manufacturing is simpler, but viewing angle and light modulation efficiency deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the light modulation portion into multiple functional layers: refractive index variable material layer, light modulation microstructure, and electrode layers. Each layer performs a specific function - the liquid crystal layer changes refractive index, the microstructure modulates light direction, and the electrodes control the switching. This segmented structure improves viewing angle and light modulation efficiency while maintaining manufacturing feasibility through standardized layer-by-layer fabrication processes.
Solution Approach 2:
The patent uses composite materials by combining different functional materials in the light modulation portion: liquid crystal material for refractive index variation, transparent resin for microstructure formation, and conductive materials for electrodes. This composite structure achieves superior light modulation efficiency and wide viewing angles by leveraging the complementary properties of each material, while the overall structure remains compatible with existing manufacturing techniques.
3Reliability
If multiple electrode layers are used to improve light modulation control, then peep-proof effect is enhanced, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the light modulation microstructure directly within the light modulation portion, combining the functions of light modulation and structural support into a single integrated component. The microstructure is formed within the transparent resin layer that also serves as the structural matrix, eliminating the need for separate complex support structures. This integrated design enhances the peep-proof effect while keeping the overall device structure relatively simple and manageable.
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
Enhances display brightness in sharing mode while maintaining privacy in peep-proof mode, offering improved user experience and reduced power consumption.
Implementation Method 1
the refractive index of liquid crystal in the liquid crystal layer is configured to change between a first refractive index and a second refractive index
Implementation Method 2
the refractive index variable material layer includes a liquid crystal layer
Implementation Method 3
a refractive index of the light modulation microstructure is equal to one of the first refractive index and the second refractive index
Data Source
AI summary
A display device is provided. The display device includes a display panel and a light modulation portion which are stacked. The light modulation portion includes a first substrate, a refractive index variable material layer, a light modulation microstructure, an electrode layer and a second substrate which are stacked, and the refractive index variable material layer, the light modulation microstructure and the electrode layer are all located between the first substrate and the second substrate; the electrode layer includes at least one electrode layer, the at least one electrode layer includes electrodes located in a same layer and separated from each other, and the light modulation microstructure and the electrode layer are located at both sides of the refractive index variable material layer respectively, or both the light modulation microstructure and the electrode layer are located at a same side of the refractive index variable material layer.