Glasses-Free 3D Display Crosstalk Correction via Viewpoint-Specific Coefficients
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Solution Overview
Problem
Glasses-free stereoscopic 3D image display devices face issues with image overlap across adjacent viewpoints due to imperfect image separation, leading to crosstalk and reduced display quality.
Innovation Solution
A display device with a display panel, optical member, and driver that detects and corrects crosstalk by using a test image to generate correction coefficients for each viewpoint, aligning image data with stereoscopic lenses, and adjusting the curvature of a reflective panel to optimize image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If glasses-free stereoscopic display uses optical members like parallax barrier or lenticular sheet to separate left and right eye images, then 3D viewing experience is improved, but image overlap between adjacent viewpoints occurs causing crosstalk
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction coefficients for each viewpoint before actual display operation. The system performs viewpoint classification and image data correction in advance, so that when a specific viewpoint is detected, the already-corrected image data can be immediately displayed without real-time computation delays, thereby preventing crosstalk while maintaining 3D viewing quality
Solution Approach 2:
The patent implements feedback by detecting the actual viewpoint of the viewer and using this information to selectively apply correction coefficients. The system continuously monitors viewpoint position and adjusts the displayed image data accordingly, creating a closed-loop control system that dynamically eliminates crosstalk based on real-time viewing conditions
2Measurement precision
If correction coefficients are calculated for each viewpoint to reduce crosstalk, then image quality is improved, but calculation time and processing complexity increase
Solution Approach 1:
The patent resolves this contradiction by performing the computationally intensive correction coefficient calculations in advance, before actual display operation. All viewpoint classification and correction data are pre-computed and stored in memory, allowing the system to simply retrieve and apply the appropriate correction coefficients during operation without real-time calculation, thus maintaining high image quality while minimizing processing time
Solution Approach 2:
The patent applies dynamics by making the correction process adaptive rather than static. The system dynamically selects which correction coefficients to apply based on the detected viewpoint position, and can update correction data as needed. This allows the system to maintain high image quality for relevant viewpoints while avoiding unnecessary processing for viewpoints that don't require correction
Data Source
AI summary
A display device includes a display panel having a plurality of sub-pixels, an optical member on the display panel, and a display driver configured to drive the display panel to display a test image on the display panel, and upon receiving a correction coefficient for each of a plurality of viewpoints of the display panel based on the display of the test image, to correct image data using the correction coefficient for each of the plurality of viewpoints.