Stereoscopic Display Eye Tracking With Embedded Image Sensors
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Solution Overview
Problem
Existing stereoscopic image display devices face challenges in providing a bezel-free design while maintaining high image quality and dynamic adaptability to user movements, often requiring additional eyewear or compromising on image display due to the presence of imaging elements.
Innovation Solution
Integration of built-in cameras or image sensors within the display panel, positioned behind or within grooves in the substrate, allows real-time tracking of user eye positions and location, with an optical member refracting display light to generate stereoscopic images, and a main driver circuit dynamically adjusting viewing points for seamless 3D experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If imaging elements (cameras or image sensors) are disposed outside the display panel, then user location and eye position tracking can be achieved, but the bezel area increases and display area is reduced
Solution Approach 1:
The patent integrates imaging elements (cameras or image sensors) directly into the display panel substrate, merging two previously separate functions (display and imaging) into a single integrated structure. This eliminates the need for separate bezel areas for housing external imaging elements, thereby reducing bezel area while maintaining tracking accuracy.
Solution Approach 2:
The imaging elements are positioned in a different spatial dimension relative to the display surface - either within grooves formed in the substrate or on the rear surface of the substrate. This dimensional repositioning allows the imaging elements to be hidden from the front view, reducing the visible bezel area while maintaining their functional capability for tracking.
2Area of stationary object
If imaging elements are disposed within the display area, then bezel-free design is achieved, but image quality may be compromised due to obstruction
Solution Approach 1:
The imaging elements are nested within grooves formed in the substrate or positioned on the rear surface, allowing them to be embedded within the display structure without protruding to the front. This nesting approach enables the imaging elements to occupy space within the substrate thickness rather than on the front surface, preserving display area while maintaining image quality.
Solution Approach 2:
The substrate acts as an intermediary medium that houses the imaging elements while allowing light to pass through to the display area. The substrate structure is designed to accommodate the imaging elements without creating obstructions in the optical path, thereby maintaining both display area and image quality.
3Ease of manufacture
If traditional separate mounting of cameras and displays is used, then manufacturing is simpler, but device complexity increases due to multiple components
Solution Approach 1:
The patent combines the display panel and imaging elements into a single integrated structure where the imaging elements are formed within or on the substrate of the display panel. This merging reduces the total number of separate components and simplifies the assembly process, as the imaging elements and display are manufactured together as one unit rather than being separately mounted.
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 provides a reduced or bezel-free display with high image quality and user satisfaction, enabling a seamless and adaptive 3D experience by accurately aligning stereoscopic images with user movements.
Implementation Method 1
an optical member configured to refract an image display light emitted in a display area of the display panel and output the refracted image display light as a stereoscopic image display light
Data Source
AI summary
A stereoscopic image display device includes a display panel configured to display an image and an optical member that refracts image display light emitted in the display area of the display panel, outputting it as stereoscopic image display light. A plurality of image sensors arranged in the display area capture front-side image data. A main driver circuit analyzes the front-side image data to track a user's location and/or the user's right and left eye positions and controls pixels in the display area to display right-eye and left-eye image data. The main driver circuit further adjusts the viewing points of the right-eye and left-eye image data based on the tracked user's location and/or eye positions and drives the pixels to display a stereoscopic image aligned with the adjusted viewing points.