3D Display Eye-Tracked Parallax Barrier for Crosstalk Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional display devices struggle to provide clear, parallax-based images to users without glasses, as they fail to accurately determine and adjust image regions for each eye, leading to crosstalk and suboptimal viewing experiences.
Innovation Solution
A three-dimensional display system comprising a display panel, an optical element, an acquisition unit, and a controller that determines and adjusts visible regions for each eye by using a parallax barrier to direct image light, allowing precise display of parallax images based on detected eye positions, minimizing crosstalk and enhancing viewing clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed parallax barrier is used to direct light beams, then the three-dimensional display can be implemented, but crosstalk occurs when eye positions deviate from standard distances
Solution Approach 1:
The patent applies dynamics by making the light beam defining regions movable rather than fixed. The control unit adjusts the positions of these regions based on detected eye positions, allowing the optical system to adapt dynamically to different viewing conditions and eliminate crosstalk for users with non-standard inter-eye distances
Solution Approach 2:
The patent changes the parameters of the light beam defining regions (their positions and orientations) based on detected eye positions. By adjusting these parameters in real-time, the system maintains accurate light direction to each eye even when eye positions vary from standard configurations
2Manufacturing precision
If light beam defining regions are adjusted for standard inter-eye distance, then clear images are displayed for standard users, but crosstalk increases for users with non-standard distances
Solution Approach 1:
The patent applies local quality by independently adjusting the light beam defining regions for different spatial locations. Each region is optimized for its specific direction and the detected eye position, allowing precise control of light paths to minimize crosstalk for each user's unique anatomy
Solution Approach 2:
The patent uses feedback from the detection unit that measures actual eye positions. This feedback information is fed to the control unit, which then adjusts the light beam defining regions accordingly, creating a closed-loop system that eliminates crosstalk by adapting to each user's specific eye configuration
3Device complexity
If the display system uses fixed subpixel assignments for left and right eyes, then the display structure remains simple, but it cannot accommodate varying eye positions and orientations
Solution Approach 1:
The patent makes the subpixel assignment dynamic by allowing the control unit to determine which subpixels belong to which eye based on detected eye positions and orientations. This dynamic reassignment accommodates varying eye configurations without requiring multiple fixed display structures
Solution Approach 2:
The patent achieves universality by creating a single display system that can serve multiple user types with different inter-eye distances and eye orientations. The control unit universally applies the same detection and adjustment mechanism to accommodate any user configuration
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 system effectively reduces crosstalk and improves the clarity of three-dimensional images by accurately directing image light to each eye, ensuring a better viewing experience even when the inter-eye distance is not at the standard distance, and accommodating eye movements and orientations.
Implementation Method 1
an optical element, configured to define a light beam direction of image light emitted from the active area
Data Source
AI summary
A three-dimensional display device includes a display panel, an optical element, an acquisition unit, and a controller. The display panel includes an active area. The optical element defines a light beam direction of image light emitted from the active area. The acquisition unit acquires a position of a first eye of a user and a position of a second eye of the user. The controller drives the active area to display the image mixture. The active area includes a plurality of subpixels. The controller determines a first visible region. The controller determines a second visible region. The controller determines a first subpixel based on the first visible region. The controller determines a second subpixel based on the second visible region. The controller drives a third subpixel which is the first subpixel and also is the second subpixel, to display a third image.