Display Panel Layout for Privacy Viewing Angle Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Micro LED display technologies face challenges in achieving privacy protection while maintaining effective display performance, particularly in managing light emission angles to ensure secure viewing angles.
Innovation Solution
A display panel design incorporating a substrate with a first and second light-emitting device, each driven by a dedicated circuit, and a shielding part positioned to overlap with the second light-emitting device's projection, allowing independent control of light emission angles to achieve privacy protection and improved display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light-emitting device is used for display, then the display structure is simple, but privacy protection capability is poor
Solution Approach 1:
The light-emitting device is segmented into a first light-emitting device for displaying target image information and a second light-emitting device for displaying interference image information. This segmentation enables different display regions to serve different functions, with the first device providing normal display content and the second device providing privacy protection by emitting interference patterns to side viewing angles.
Solution Approach 2:
Different regions of the display are assigned different functional qualities: the first light-emitting device region is optimized for front viewing angles to display target image information, while the second light-emitting device region is optimized for side viewing angles to display interference image information. This local differentiation of functional quality enables simultaneous normal display and privacy protection capabilities.
2Adaptability or versatility
If light emission angle is increased for wider viewing, then display coverage is improved, but privacy protection is compromised
Solution Approach 1:
The viewing angle coverage is segmented into two distinct zones: a front viewing zone covered by the first light-emitting device for target image display, and a side viewing zone covered by the second light-emitting device for interference image display. This segmentation allows the display to provide different content to different viewing angles, maintaining privacy protection while achieving wide viewing coverage.
Solution Approach 2:
Different angular regions are assigned different display qualities: the first light-emitting device provides high-quality target image information to front viewing angles, while the second light-emitting device provides interference image information to side viewing angles. This local quality differentiation enables the display to adapt to different viewing scenarios while maintaining privacy protection.
3Reliability
If a second light-emitting device is added for privacy protection, then privacy capability is improved, but device complexity increases
Solution Approach 1:
The first and second light-emitting devices are merged into a single integrated light-emitting device structure, where both devices share common support structures, packaging, and mounting on the substrate. This merging approach reduces overall device complexity compared to using two completely separate devices, while still maintaining the functional benefits of having distinct regions for target image and interference image display.
4Measurement precision
If independent driving circuits are used for each light-emitting device, then control precision is improved, but circuit complexity increases
Solution Approach 1:
The first driving circuit and second driving circuit are merged into a single integrated driving circuit structure on the substrate, with both circuits sharing common signal lines, power supply connections, and substrate real estate. This merging reduces circuit complexity and layout difficulty while maintaining the ability to independently control the first and second light-emitting devices for precise display and privacy protection functions.
Data Source
AI summary
A display panel, a display device, and a control method are provided. The display panel includes: a substrate; a group of light-emitting devices located at a side of the substrate and comprising a first light-emitting device and a second light-emitting device that is disposed at least partially surrounding the first light-emitting device; a driving circuit comprising a first driving circuit for driving the first light-emitting device and a second driving circuit for driving the second light-emitting device; and a shielding part located at a side of the group of light-emitting devices away from the substrate, wherein an orthographic projection of the shielding part on the substrate is at least partially overlapped with an orthographic projection of the second light-emitting device on the substrate. The embodiments of the present application can not only achieve privacy protection, but also improve a display effect of the display device under a front viewing angle.