Segmented Light Shielding for Anti-Peep Displays
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Solution Overview
Problem
Display devices in public use face challenges in preventing personal information disclosure due to lack of effective anti-peeping measures that do not compromise brightness and touch sensitivity.
Innovation Solution
A display substrate with light shielding portions between pixel units, allowing for selective light shielding to prevent large-angle light emission, thereby maintaining brightness and touch sensitivity while providing a peep prevention function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light shielding portion is added between pixel units to prevent peeping, then anti-peeping performance is improved, but device complexity increases
Solution Approach 1:
The light shielding portion is segmented into multiple independent blocks arranged in a grid pattern between pixel units. Each block independently shields light in specific directions, allowing the system to achieve comprehensive anti-peeping coverage while maintaining modular simplicity in the overall structure.
Solution Approach 2:
The light shielding portion is strategically positioned only in specific regions between pixel units where peeping is most likely to occur. The shielding blocks are arranged to provide directional light blocking exactly where needed, rather than uniformly across the entire display, thus improving anti-peeping performance without unnecessarily increasing overall structural complexity.
2Loss of information
If light shielding portions are added to block large-angle light, then information disclosure is prevented, but brightness may be reduced
Solution Approach 1:
The light shielding is segmented into discrete blocks rather than continuous barriers, allowing light to pass through gaps between blocks at normal viewing angles while blocking light at extreme angles. This segmentation preserves brightness for legitimate viewers while preventing information disclosure to peepers.
Solution Approach 2:
The light shielding blocks are designed to provide partial blocking of light rather than complete obstruction. The blocks are positioned and sized to intercept only the excessive large-angle light that causes peeping, while allowing sufficient light transmission at normal viewing angles to maintain display brightness.
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 effectively blurs the displayed picture at certain viewing angles, preventing information disclosure without reducing the overall brightness or touch sensitivity of the display device.
Implementation Method 1
a light shielding portion between two adjacent first pixel units
Data Source
AI summary
A display substrate, a display device, and a peep prevention method thereof. The display substrate includes: a base substrate; a plurality of pixel units on the base substrate and including a plurality of first pixel units; and a light shielding portion positioned between two adjacent first pixel units.