Privacy Module Polarizing Elements Whole-Direction Orientation
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Solution Overview
Problem
Current electronic devices with privacy functions are limited to specific orientations and fail to provide adequate privacy when rotated, and existing solutions require high power consumption and have issues with brightness in sharing and privacy modes.
Innovation Solution
An electronic device with a privacy module comprising a first polarizing element, a second polarizing element, and a light modulation element, where the polarizing elements include light absorbing materials with specific orientations and the light modulation element adjusts polarization direction to ensure privacy in all orientations without the need for high power or additional backlight units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a whole-direction privacy function device is used, then privacy protection in all orientations is improved, but power consumption increases and brightness control becomes problematic
Solution Approach 1:
The privacy device is segmented into multiple independent polarizing elements (first and second polarizing elements) with different light absorbing material orientations. Each polarizing element handles specific orientation ranges, allowing the system to achieve whole-direction privacy without requiring all elements to operate at full power simultaneously, thus reducing overall power consumption.
Solution Approach 2:
Different regions of the display have different polarizing element configurations optimized for their specific viewing angles. The first polarizing element with its light absorbing material oriented in a first direction serves specific angular ranges, while the second polarizing element with light absorbing material oriented in a second direction serves other angular ranges. This local optimization allows effective privacy protection without uniformly increasing power consumption across the entire display.
2Illumination intensity
If a dual backlight system is used, then brightness in sharing mode is improved, but design complexity increases and luminance in privacy mode decreases
Solution Approach 1:
The invention extracts the privacy control function from the backlight system and relocates it to the polarizing elements. Instead of using a complex dual backlight system with separate controls, the privacy function is achieved by the optical properties of the first and second polarizing elements that selectively absorb light based on viewing angle, simplifying the overall system design while maintaining brightness control.
Solution Approach 2:
The polarizing elements act as intermediaries between the single backlight source and the display content. Rather than modifying the backlight system itself, the polarizing elements mediate the light path, selectively blocking light at different angles through their oriented light absorbing materials. This intermediary approach achieves privacy control without requiring complex dual backlight architecture.
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 provides whole-direction privacy without increasing power consumption, allowing the device to function effectively in both landscape and portrait modes while maintaining a compact design and reducing costs.
Implementation Method 1
The first polarizing element includes a first light absorbing material. The second polarizing element includes a second light absorbing material. The first light absorbing material has a first long axis, and the second light absorbing material has a second long axis.
Implementation Method 2
The light modulation element is disposed between the first polarizing element and the second polarizing element. The first polarizing element has a surface, and the surface has a normal direction.
Data Source
AI summary
An electronic device is provided. The electronic device includes a privacy module. The privacy module includes a first polarizing element, a second polarizing element, and a light modulation element. The first polarizing element includes a first light absorbing material. The first polarizing element has a surface, and the surface has a normal direction. The second polarizing element includes a second light absorbing material. The second polarizing element at least partially overlaps the first polarizing element. The light modulation element is disposed between the first polarizing element and the second polarizing element. The first light absorbing material has a first long axis, and the second light absorbing material has a second long axis. The first long axis and second long axis are parallel to the normal direction.