Display Device Anti-Peep Method Using Misaligned Pixel Groups
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Solution Overview
Problem
Traditional display technologies face challenges in providing effective privacy protection without compromising brightness, power consumption, or viewing angles, as anti-peep methods like films and sheets result in lower brightness, higher power consumption, and limited viewing angles, while failing to combine privacy protection with sharing capabilities.
Innovation Solution
A display device and driving method that split a picture frame into sub-pictures and raster pictures, with pixel rows arranged in misaligned groups including display and light-shielding pixels, allowing only direct viewers to see content while others at angles are blocked, using a sub-display panel and sub-raster panel with overlapping backlight modules and polarizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an anti-peep film or anti-peep sheet is attached to the screen to achieve privacy protection, then privacy protection is improved, but brightness is reduced and power consumption increases
Solution Approach 1:
The display screen is segmented into multiple sub-screens that can be independently controlled. Each sub-screen displays different content or the same content at different brightness levels, allowing the system to provide privacy protection for specific regions while maintaining overall brightness and sharing capabilities for other regions.
Solution Approach 2:
Different regions of the display screen are assigned different display qualities and characteristics. The anti-peep function is applied locally to specific sub-screens or pixel groups rather than the entire screen, allowing privacy protection where needed while maintaining normal brightness and sharing functionality in other areas.
2Object-affected harmful factors
If an anti-peep film or anti-peep sheet is attached to the screen to achieve privacy protection, then privacy protection is improved, but viewing angle range is limited
Solution Approach 1:
The display is divided into multiple sub-screens with different viewing angle characteristics. Some sub-screens are configured with narrow viewing angles for privacy protection, while others maintain wide viewing angles for sharing, allowing the system to provide both functions simultaneously without compromising overall adaptability.
Solution Approach 2:
The viewing angle characteristics of different sub-screens can be dynamically adjusted based on usage scenarios. The system can switch between privacy protection mode and sharing mode by changing the display parameters of different sub-screens, providing adaptability to different viewing requirements.
3Object-affected harmful factors
If traditional anti-peep methods are used, then privacy protection is achieved, but the functions of anti-peeping and sharing cannot be combined
Solution Approach 1:
The display functionality is segmented into multiple independent sub-screens that can operate in different modes simultaneously. Some sub-screens are dedicated to privacy protection while others are optimized for sharing, allowing both functions to coexist without interference and be combined according to different usage scenarios.
Solution Approach 2:
The display device is designed to perform multiple functions through different sub-screens. Each sub-screen can independently switch between privacy protection mode and sharing mode, making the device universally applicable to both privacy-sensitive scenarios and collaborative viewing scenarios.
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
This approach enhances privacy protection by maintaining high brightness and wide viewing angles, enabling both anti-peep and sharing functions without the drawbacks of traditional methods.
Implementation Method 1
using a sub-display panel and sub-raster panel with overlapping backlight modules and polarizers
Data Source
AI summary
The present disclosure discloses a display device and a driving method thereof. The driving method includes: when an anti-peep mode is enabled, generating M-frame sub-picture information and M-frame raster picture information according to information of a current picture frame to be displayed; controlling a sub-display panel in the display device to sequentially display M sub-pictures according to the M-frame sub-picture information, controlling pixel rows of the sub-pictures to be periodically arranged and displayed as first pixel groups, and controlling the first pixel groups of the pixel rows corresponding to the sub-pictures to be mutually misaligned; and controlling a sub-raster panel in the display device to sequentially display M raster pictures according to the M-frame raster picture information, and controlling pixel rows of the raster pictures to be periodically arranged and displayed as second pixel groups.