Display Privacy Panel Layout for Partial Privacy on Large Screens
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Solution Overview
Problem
Existing display technologies cannot effectively implement a partial privacy function on large-size displays, and they often suffer from light leakage at large viewing angles in low-light environments, leading to poor privacy effects.
Innovation Solution
The electronic device incorporates a display device with a sharing area, a junction area, and a privacy area, where the junction area is positioned between the sharing and privacy areas, and the transmittance is adjusted to achieve a high-quality optical performance and partial privacy function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mode switching technology or privacy panel is used on entire display panel, then privacy function is activated, but light leakage occurs at large viewing angles in low-light environments
Solution Approach 1:
The patent divides the display panel into distinct regions with different transmittance characteristics: a first region (sharing area) with higher transmittance and a second region (privacy area) with lower transmittance. This local differentiation allows the privacy function to be applied selectively to specific areas rather than the entire panel, preventing light leakage in the sharing area while maintaining privacy protection in the privacy area.
2Reliability
If overall brightness of backlight module is reduced to optimize privacy effect, then privacy effect is improved, but display quality deteriorates
Solution Approach 1:
The patent implements different transmittance levels in different regions of the display panel. The first region maintains higher transmittance to preserve display brightness and quality, while the second region uses lower transmittance to achieve privacy protection. This localized approach eliminates the need to reduce overall backlight brightness, thereby maintaining display quality while providing privacy functionality where needed.
3Reliability
If traditional privacy technology is applied to small and medium-sized displays, then privacy function is achieved, but partial privacy activation on large-size displays is not possible
Solution Approach 1:
The patent segments the display panel into multiple functional regions: a first region for sharing, a second region for privacy, and a third region (junction area) connecting them. This segmentation enables independent control of privacy functionality in different areas of the display, allowing partial privacy activation on large-size displays while maintaining overall system coherence and visual continuity.
4Stability of the object's composition
If junction area connects sharing area and privacy area, then optical continuity is improved, but transmittance variation may cause visual discontinuity
Solution Approach 1:
The patent carefully controls the transmittance parameters of the junction area to ensure it falls within a specific range that bridges the transmittance values of the first and second regions. This parameter optimization maintains optical continuity across the entire display panel while minimizing visible transitions, ensuring visual uniformity despite the transmittance gradient between different functional regions.
Data Source
AI summary
An electronic device including a display device is provided. The display device includes a sharing area, a junction area, and a privacy area. The junction area is positioned between the sharing area and the privacy area. The display device includes a privacy panel. A transmittance of the privacy panel corresponding to the sharing area is greater than a transmittance of the privacy panel corresponding to the junction area, and the transmittance of the privacy panel corresponding to the junction area is greater than a transmittance of the privacy panel corresponding to the privacy area.