Display Panel with Electric-Field Lens Control for Viewing Angles
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Solution Overview
Problem
Existing VR display apparatuses face challenges in enhancing user immersion and improving human-computer interaction experiences, particularly in adjusting viewing angles to meet the needs of special display requirements.
Innovation Solution
A display panel with a light emitting angle adjustment structure comprising an electrode structure and an electrical control material layer that forms convex or concave lens structures under an electric field, allowing for adjustable viewing angles through controlled voltage application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed viewing angle display structure is used, then the device structure is simple, but the adaptability to different display requirements (anti-peep, wide viewing angle) is poor
Solution Approach 1:
The patent applies the dynamics principle by making the viewing angle of the display panel adjustable through an electric field. The electrical control material layer changes its shape (convex or concave lens structure) based on applied voltage, enabling dynamic adjustment between anti-peep mode (narrow viewing angle) and wide viewing angle mode, thus resolving the contradiction between fixed simple structure and adaptable versatile structure.
Solution Approach 2:
The patent uses parameter changes by modifying the physical state of the electrical control material layer through voltage control. By changing the electric field parameters (voltage magnitude and polarity), the material layer transforms between different shapes (flat, convex, concave), which directly controls the light emission angle parameter, achieving adaptability without permanent structural complexity.
2Ease of operation
If the electrical control material layer forms a convex lens structure under electric field, then the viewing angle is narrowed for anti-peep display, but the light emission intensity may be reduced
Solution Approach 1:
The patent applies local quality by creating non-uniform electric field distributions across the electrical control material layer. Different regions of the material layer experience different electric field strengths, resulting in localized shape variations that optimize both the narrowing effect for anti-peep functionality and maintain adequate light emission intensity through controlled local refraction rather than uniform blocking.
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 display panel achieves adjustable light emitting angles, enhancing stereo display effects and improving user immersion by enabling anti-peep and wide viewing angle displays, suitable for near-to-eye applications.
Implementation Method 1
the electrical control material layer is configured to form a convex lens structure or a concave lens structure under the action of an electric field
Implementation Method 2
a material of the electrical control material layer includes polycarbonate plexiglass, polyvinylidene fluoride or an electrowetting material
Data Source
AI summary
Disclosed are a display panel, a drive method therefor, and a display apparatus. By providing a light emergence angle adjustment structure (3) on a light emergence side of an organic light emitting device (12) and when an electric field is formed by applying different voltages on an electrode structure (31), on one respect, an electrical control material layer (32) of the light emergence angle adjustment structure (3) forms a convex lens structure under the action of the electric field, and the convex lens structure has the effect of concentrating an outputted light; and an another respect, the electrical control material layer (32) forms a concave lens structure under the action of the electric field, and the concave lens structure has the effect of dispersing an outputted light.