Pixel Structure Anti-Peeping via Side-View Light Mixing
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Solution Overview
Problem
Display devices lack effective anti-peeping capabilities, allowing others to view content intended for normal viewing directions from side angles.
Innovation Solution
A pixel structure comprising first, second, and third color pixels with normal-viewing and side-viewing sub-pixels, where light emissions from these sub-pixels are mixed to achieve white emission in side view directions, thereby preventing content visibility from angles other than the intended normal view direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional display devices are used, then content is visible from multiple viewing angles, but anti-peeping capability is insufficient
Solution Approach 1:
The pixel structure is segmented into multiple sub-pixels with different viewing characteristics. Each sub-pixel (normal-viewing and side-viewing) is independently controlled to emit specific color light, allowing the display to present different content or colors from different viewing angles, thereby achieving anti-peeping capability while managing structural complexity through functional segmentation
2Object-affected harmful factors
If multiple sub-pixels with different viewing directions are used, then anti-peeping capability is improved, but device complexity increases
Solution Approach 1:
Different sub-pixels are assigned different local qualities in terms of viewing direction characteristics. Normal-viewing sub-pixels are optimized for front viewing while side-viewing sub-pixels are optimized for angled viewing. This local differentiation allows the display to control what is visible from different angles without requiring complete structural redesign, managing complexity through targeted local optimization
Solution Approach 2:
The patent introduces a new dimension of control by adding side-viewing sub-pixels that emit light at specific angles. This dimensional addition to the traditional single-viewing-angle pixel structure enables independent control of content visibility in different spatial directions, achieving anti-peeping capability while the modular sub-pixel approach helps manage the increased complexity
3Object-affected harmful factors
If first color light, second color light, and third color light are mixed in side view direction, then white emission is achieved for anti-peeping, but manufacturing precision requirements increase
Solution Approach 1:
The patent controls the emission parameters (intensity, wavelength) of each sub-pixel type to achieve the desired white emission in side-view direction. By adjusting the parameters of individual sub-pixels rather than requiring perfect physical mixing conditions, the system achieves anti-peeping capability while managing manufacturing precision requirements through parameter optimization rather than structural perfection
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
Enhances the anti-peeping capability of display devices by ensuring content is not visible from side views, maintaining intended image information visibility only in the normal viewing direction.
Implementation Method 1
First color light emitted from the first-color normal-viewing sub-pixel, second color light emitted from the second-color side-viewing sub-pixel, and third color light emitted from the third-color side-viewing sub-pixel are mixed to obtain a white emission in a first side view direction
Data Source
AI summary
A pixel structure, including a first color pixel, a second color pixel and a third color pixel. The first color pixel includes a first-color normal-viewing sub-pixel and at least one first-color side-viewing sub-pixel. The second color pixel includes a second-color normal-viewing sub-pixel and at least one second-color side-viewing sub-pixel. The third color pixel includes a third-color normal-viewing sub-pixel and at least one third-color side-viewing sub-pixel. First color light emitted from the first-color normal-viewing sub-pixel, second color light emitted from the second-color side-viewing sub-pixel, and third color light emitted from the third-color side-viewing sub-pixel are mixed to obtain a white emission in a first side view direction.