Liquid Crystal Steering Module for Dynamic Viewing Angle Control
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Solution Overview
Problem
Existing display technologies face limitations in controlling the viewing angle, requiring users to shield or aim screens due to processing and size constraints, making it difficult to selectively share information with intended viewers while preventing others from seeing.
Innovation Solution
The use of liquid crystal optical elements with electronically controllable refractive index and focal length, integrated into a steering module within a display system, allows for dynamic adjustment of light beams to specific scattering regions, determining the viewing angle without mechanical movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional display technologies are used, then the display can show information, but the viewing angle cannot be controlled and unintended viewers can see the information
Solution Approach 1:
The display system is segmented into multiple functional modules: a light source module, a liquid crystal steering module with multiple scattering regions, and a display module. Each module performs a specific function, allowing independent optimization and control of the viewing angle without redesigning the entire display system.
Solution Approach 2:
The patent replaces mechanical steering mechanisms with an electrically controlled liquid crystal system. By applying voltages to the liquid crystal material, the optical properties are dynamically adjusted to steer light beams to different scattering regions, eliminating the need for moving mechanical parts while achieving precise viewing angle control.
2Adaptability or versatility
If the display aims towards a specific viewer, then privacy is improved, but the display cannot be shared with multiple viewers simultaneously
Solution Approach 1:
The liquid crystal steering module dynamically adjusts its optical properties in real-time by changing voltage patterns. This allows the display to rapidly switch between different viewing angles and configurations, enabling seamless transitions between single-user privacy mode and multi-user sharing mode without manual reconfiguration.
Solution Approach 2:
The system changes the optical parameters of the liquid crystal material (refractive index, focal length) through electrical control to direct light beams to different scattering regions. This parameter control enables the same physical display to present information to multiple viewers at different angles simultaneously, or to restrict viewing to a single direction when needed.
3Adaptability or versatility
If shielding mechanisms are used to prevent unintended viewing, then privacy is improved, but the device size and processing requirements increase
Solution Approach 1:
The patent introduces liquid crystal material as an intermediary between the light source and the display content. This intermediary dynamically controls the path of light beams through electrical fields, providing privacy control without requiring physical shields or additional housing structures, thus maintaining a compact form factor.
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
Enables precise control of the viewing angle, allowing information to be shared selectively with intended viewers while maintaining privacy from others, through electronic steering of light beams using liquid crystal materials.
Implementation Method 1
The liquid crystal material may be electronically controllable to adjust an effective index of refraction of the steering module
Implementation Method 2
The liquid crystal material may be electronically controllable to adjust a focal length of the steering module
Implementation Method 3
a first scattering region that scatters light from the steering module towards the opening with a first viewing angle
Data Source
AI summary
Systems and methods for electronically controlling the viewing angle of a display using liquid crystal optical elements are provided. Each liquid crystal optical element may be associated with a respective scattering module and may selectively steer a device generated light beam to one of two or more scattering regions of its associated scattering module. When a scattering region receives a steered light beam, the steered light beam may be scattered into a viewing cone having at least one viewing angle defined by a characteristic of that scatter region. Each liquid crystal optical element may be made from one or more suitable liquid crystal materials that can be controlled electronically to vary the effective index of refraction of one or more different regions of the liquid crystal optical element, thereby steering incoming light towards a particular one of two or more scattering regions of an associated scattering module.