Multi-Region Polarizer for Flexible Anti-Peep Display Control
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Solution Overview
Problem
Conventional anti-peep display devices have restricted visible and non-visible angle ranges due to fixed raster light blocking walls, limiting their applicability.
Innovation Solution
A display device with a polarizer having multiple polarizing regions of different orientations, controlled by an image processor to selectively display images based on user modes, ensuring only authorized viewers with matching polarized glasses can see the content regardless of their position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If raster light blocking walls are fixed on the display panel, then the anti-peep effect is achieved within fixed visible angles, but the visible angle range and non-visible angle range are restricted
Solution Approach 1:
The polarizer is divided into multiple polarizing regions (first polarizing region and second polarizing region) with different polarizing directions. Each region corresponds to different rows of pixels and can be independently controlled to display images or interfering images, enabling flexible adjustment of visible and non-visible angle ranges while maintaining anti-peep effect.
Solution Approach 2:
The display device dynamically switches between different modes (first anti-peep mode, second anti-peep mode, double viewing mode) by controlling the image processor to display different content in different polarizing regions. This allows the visible angle range to be adjusted from narrow to wide or to support multiple viewing angles simultaneously, making the anti-peep effect adaptable to different application scenarios.
2Reliability
If raster light blocking walls are used to restrict viewing angles, then content cannot be seen outside the fixed visible angle range, but the applicability of the display device is reduced
Solution Approach 1:
The device changes the polarizing direction parameter across different regions of the polarizer. The first polarizing region has a first polarizing direction while the second polarizing region has a second polarizing direction different from the first. This parameter variation enables different viewing angle characteristics in different regions, increasing the device's applicability to various scenarios.
Solution Approach 2:
The display device achieves multiple functions through a single unified structure. It can operate in first anti-peep mode, second anti-peep mode, or double viewing mode, making it suitable for both single-viewer and multi-viewer scenarios. This multi-functionality eliminates the need for different hardware configurations for different applications, thereby improving applicability.
3Adaptability or versatility
If multiple polarizing regions with different polarizing directions are used, then flexible angle ranges for visibility are achieved, but the device complexity increases
Solution Approach 1:
Multiple polarizing regions with different polarizing directions are merged into a single integrated polarizer component. The first polarizing region and second polarizing region are combined in one polarizer structure, simplifying the overall device architecture while maintaining the flexibility of different viewing angles. This merging approach avoids the complexity of multiple separate polarizer components.
Solution Approach 2:
Different regions of the polarizer are assigned different local properties (polarizing directions) to achieve specific functions. The first polarizing region has a polarizing direction optimized for one viewing angle range, while the second polarizing region has a different polarizing direction optimized for another viewing angle range. This local differentiation enables angle range flexibility without requiring complete redesign of the entire polarizer structure.
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 significantly enhances the applicability of the display device by allowing flexible angle ranges for visibility and increasing the anti-peep effect by mixing images in different modes, making it impossible for unauthorized viewers to see the content.
Implementation Method 1
a polarizer disposed on the light outgoing side of the display panel. The polarizer includes a first polarizing region and a second polarizing region having different polarizing directions from each other
Data Source
AI summary
The present disclosure provides a display device, a display driving method and a display system, wherein the display device includes a display panel and a polarizer disposed on the light outgoing side of the display panel. The polarizer comprises a first polarizing region and a second polarizing region having different polarizing directions from each other. The display device further includes an image processor configured to cause only a region of the display panel corresponding to the first polarizing region to display an image to be displayed if a first anti-peep mode is selected by a user; and to cause only a region of the display panel corresponding to the second polarizing region to display the image to be displayed if a second anti-peep mode is selected by a user. The display device according to the present disclosure has a significantly improved applicability.