Concave Mirror Display Panel for Directional Privacy Viewing
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Solution Overview
Problem
Existing display devices lack anti-peep technologies, leading to frequent information leakage incidents, as they allow observers from non-orthogonal viewing angles to see screen content, compromising user privacy.
Innovation Solution
A display panel design featuring a first substrate with concave mirror structures and a second substrate with light-emitting units positioned at the focal points of these mirrors, ensuring that only direct viewers can see the screen content by reflecting light in a parallel and directional manner, preventing information leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional flat display screens are used, then the viewing angle is wide and easy to observe, but confidential information can be leaked to observers from non-orthogonal viewing angles
Solution Approach 1:
The patent applies curvature by introducing concave mirror structures with spherical or paraboloid surfaces into the display panel. These concave reflective layers focus light from light-emitting units onto specific viewing areas, creating a directional light path that prevents side-viewing and information leakage while maintaining front-viewing accessibility
Solution Approach 2:
The display panel is segmented into multiple independent light-emitting units, each corresponding to a specific concave mirror structure. This segmentation allows each unit to control its own light direction independently, enabling precise control over viewing angles and preventing information leakage to adjacent viewing zones
2Loss of information
If concave mirror structures are added to the display panel, then anti-peep function is achieved and information leakage is prevented, but the device complexity increases
Solution Approach 1:
The patent merges the reflective layer directly into the base film layer of the display panel, combining the anti-peep function with the existing structural layer. This integration approach reduces the need for separate components and simplifies the overall device structure while maintaining the anti-peep functionality
Solution Approach 2:
The base film layer is given multiple functions: it serves as both the structural base film and the reflective layer with concave mirror structures. This multi-functionality reduces the total number of components needed in the display panel, thereby reducing device complexity while achieving anti-peep protection
3Loss of information
If light-emitting units are positioned at focal positions of concave mirror structures, then light is reflected in a parallel and directional manner, but the manufacturing precision requirements increase
Solution Approach 1:
The concave mirror structures are pre-formed on the base film layer before the light-emitting units are positioned. This preliminary action establishes fixed focal points in advance, allowing light-emitting units to be accurately positioned at these predetermined locations, thereby reducing the overall manufacturing precision requirements
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 prevents information leakage by ensuring that only users directly in front of the screen can view the content, thereby enhancing privacy and security in display devices.
Implementation Method 1
a surface of the base film layer close to the second substrate is provided with a plurality of concave mirror structures... surfaces of the concave mirror structures facing towards the light-emitting units are concave surfaces and reflective surfaces
Data Source
AI summary
A method for manufacturing a display panel, a display panel, and a display device. The display panel includes a first substrate and a second substrate arranged opposite to each other, the first substrate includes a first base substrate and a base film layer arranged on a side of the first base substrate close to the second substrate; a surface of the base film layer close to the second substrate is provided with a plurality of concave mirror structures, the second substrate includes a second base substrate and a plurality of light-emitting units arranged on a side of the second base substrate close to the first substrate, and each of the light-emitting units is located at a focal position of a corresponding concave mirror structure of the concave mirror structures.