Display Device Spectral Control for Stereoscopic Depth
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Solution Overview
Problem
Display devices that use binocular parallax for stereoscopic images often cause viewer strain due to differences in the distance between the screen and the viewer's eyes, leading to an unnatural sense of depth.
Innovation Solution
A display device with a high NTSC ratio and contrast ratio, featuring pixels with a resolution of at least 80 ppi and light-emitting modules that emit light with a spectral line half-width of less than 60 nm, and a correction control circuit to adjust response time, allowing for gradual luminance changes, reducing strain and enhancing depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If binocular parallax is used to display stereoscopic images, then a three-dimensional effect is achieved, but viewer strain occurs due to distance differences between screen and eyes
Solution Approach 1:
The patent extracts and removes the parallax barrier component from the display system. By eliminating the physical barrier that creates binocular parallax, the system avoids the fundamental cause of viewer strain while transitioning to a different approach for achieving depth perception through high-resolution imaging and perspective control
2Measurement precision
If high resolution pixels are used to improve image quality, then image fidelity increases, but manufacturing complexity increases
Solution Approach 1:
The patent changes the key parameter from physical pixel density to optical control parameters. By using high NTSC ratio (color saturation) and controlling luminance gradients through the light-emitting module's response characteristics, the system achieves high perceived image quality without requiring extremely high physical resolution, thus avoiding the manufacturing complexity associated with high-density pixel structures
3Speed
If fast response time is used for light-emitting elements, then image refresh speed improves, but natural motion perception deteriorates
Solution Approach 1:
The patent introduces dynamic control of the light-emitting module's response characteristics. By adjusting the luminance gradient (making it greater than 0) and controlling the response time to fall within the 1 μs to 1 ms range, the system dynamically matches the temporal characteristics of natural light changes, creating more natural motion perception while maintaining adequate refresh speed for smooth image display
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 natural sense of depth without strain, allowing viewers to see images faithfully to reflected light, even without binocular parallax, with improved grayscale range and motion smoothness, reducing the need for binocular viewing.
Implementation Method 1
the pixel includes a light-emitting module capable of emitting light with a spectral line half-width of less than or equal to 60 nm
Data Source
AI summary
A display device has an NTSC ratio of higher than or equal to 80% and a contrast ratio of higher than or equal to 500 and includes a display portion. In the display portion, a pixel is provided at a resolution of greater than or equal to 80 ppi, and the pixel includes a light-emitting module capable of emitting light with a spectral line half-width of less than or equal to 60 nm. Further, the light emission of the light-emitting module is raised to a desired luminance with a gradient of greater than or equal to 0 in response to an input signal within a response time of longer than or equal to 1 μs and shorter than 1 ms.