Adaptive Display Viewing Angle Control via Polarization
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Solution Overview
Problem
Conventional display devices lack the ability to adjust their viewing angle adaptively based on the viewer's position, content type, and viewing environment, leading to privacy concerns and limited multi-user access due to fixed viewing angles.
Innovation Solution
A display device equipped with a polarizing element and a controlling unit that adjusts the viewing angle dynamically based on predetermined conditions, including viewer position, image type, and user settings, using a position detecting unit and menu screen generating system to determine and set optimal viewing angles for privacy and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide viewing angle is used, then multiple users can access content simultaneously, but viewer privacy is compromised as others can easily peep at screen contents
Solution Approach 1:
The patent applies the dynamics principle by making the viewing angle adjustable rather than fixed. The display device can dynamically change its viewing angle characteristics based on detected viewer positions and environmental conditions, allowing it to transition between wide and narrow viewing angles to balance multi-user accessibility with privacy protection.
Solution Approach 2:
The patent implements parameter changes by modifying the optical properties of the display device, specifically the viewing angle parameter. Through the use of polarizing elements and liquid crystal layers, the system can alter the polarization state of light to control the effective viewing angle, thereby adjusting between wide and narrow viewing conditions based on operational requirements.
2Object-affected harmful factors
If a narrow viewing angle is used, then viewer privacy is protected, but multiple users cannot use the same multimedia service simultaneously
Solution Approach 1:
The system dynamically adjusts the viewing angle parameter based on real-time detection of viewer positions and environmental conditions. When privacy protection is prioritized, the viewing angle is narrowed; when multi-user access is needed, the viewing angle is widened, allowing the system to adapt to different operational scenarios.
Solution Approach 2:
The display device changes its optical parameters, specifically the polarization angle and liquid crystal orientation, to control the viewing angle. By adjusting these parameters, the system can switch between narrow and wide viewing modes to satisfy different functional requirements of privacy protection and multi-user accessibility.
3Device complexity
If a fixed viewing angle is used, then device complexity is low, but the device cannot adapt to different viewing environments and user positions
Solution Approach 1:
The patent transforms the static viewing angle into a dynamic parameter that can be adjusted in response to environmental conditions and user positions. The system incorporates sensors and control mechanisms that enable real-time modification of the display's optical characteristics, allowing adaptation to various viewing scenarios while maintaining manageable system complexity through integrated control.
Solution Approach 2:
The display device incorporates self-adjustment capabilities through integrated position detection and automatic control systems. The device can autonomously detect viewer positions and environmental conditions, then automatically adjust its viewing angle parameters without requiring manual intervention, thereby achieving adaptability while keeping the user interface simple.
4Device complexity
If manual viewing angle adjustment is used, then device complexity is low, but user convenience is reduced as users cannot automatically adjust according to their position
Solution Approach 1:
The system implements self-service functionality by incorporating position detection sensors and automatic control algorithms. The display device autonomously detects the viewer's position and automatically adjusts the viewing angle parameters accordingly, eliminating the need for manual adjustment while maintaining relatively simple overall system architecture through integrated control mechanisms.
Solution Approach 2:
The patent incorporates feedback mechanisms where position detection sensors continuously monitor viewer location and environmental conditions, and this information is fed back to the control system. The control system then adjusts the display's optical parameters based on this feedback, creating a closed-loop system that automatically optimizes viewing angle for user convenience while keeping the control interface simple.
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 allows for adaptive viewing angle adjustment, enhancing viewer privacy, improving user convenience, and enabling multiple users to access content without interference, while ensuring secure display of sensitive information.
Implementation Method 1
the LCD uses a light scattering phenomenon in a liquid crystal layer according to a change of the electric field and displays images to a user by projecting a reflected light or a transmitted light on the liquid crystal layer
Implementation Method 2
an electric filed is applied to the transparent conductive layer through a matrix electrode. Then, the LCD uses a light scattering phenomenon in a liquid crystal layer according to a change of the electric field
Implementation Method 3
a polarizing element and a controlling unit that adjusts the viewing angle dynamically
Data Source
AI summary
A display device for selectively adjusting a viewing angle thereof and a method of adjusting a viewing angle thereof are provided. The display device comprises: a display unit displaying an input image based on a determined viewing angle; and a controlling unit determining a viewing angle of the display unit according to a predetermined viewing condition and controlling to display the input image with the determined viewing angle, wherein the viewing condition is one of a viewer position condition, an image type condition, and a viewer setting condition.