3D Display Light Modulation via Temporal Multiplexing
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Solution Overview
Problem
Current 3D image display devices require observers to wear 3D glasses and suffer from significant resolution loss due to the need to divide image data into multiple light paths, limiting the depth and clarity of the 3D image perceived by the human eye.
Innovation Solution
A 3D image display device comprising a backlight unit, a display panel, and a light modulating unit, controlled by a controller to generate and alter light paths, allowing the observer to see a 3D image with one eye by creating different light positions on the pupil without dividing the image data into numerous parts, thereby reducing resolution loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If image data is divided into 72 to 128 light paths in SMV system, then 3D image can be seen by single eye, but resolution loss increases greatly
Solution Approach 1:
The patent divides the image data into only 2 light paths (left and right eyes) rather than 72-128 paths, maintaining segmentation benefits while reducing complexity. The display panel is divided into multiple regions that can be independently controlled to generate different light paths, achieving 3D effect with minimal segmentation.
Solution Approach 2:
The patent uses a light modulating unit with liquid crystal molecules that can be oriented in different directions to control light paths. By manipulating the orientation and phase of light waves in the temporal dimension, the system achieves multiple light paths without spatial segmentation, preserving resolution.
2Adaptability or versatility
If image data is divided into multiple light paths, then 3D image formation is achieved, but the number of parts increases to 72 or more
Solution Approach 1:
The light modulating unit serves multiple functions: it controls light path separation, modulates light phase, and adjusts light intensity. This single component performs what would otherwise require multiple separate systems, reducing overall device complexity while maintaining 3D image formation capability.
Solution Approach 2:
The patent changes the phase parameter of light waves using liquid crystal modulation rather than physically separating light into many paths. By manipulating phase differences between light paths, the system achieves 3D effect with only 2 paths, significantly reducing device complexity.
3Ease of operation
If autostereoscopy technique is used, then 3D image can be viewed without 3D glasses, but depth of field and accommodation to human eyes is not satisfactory
Solution Approach 1:
The patent uses temporal multiplexing where light paths are alternately switched for left and right eyes at high frequency. This periodic action creates the perception of simultaneous 3D images for both eyes without glasses, while maintaining proper depth of field through controlled light timing.
Solution Approach 2:
The light modulating unit acts as an intermediary between the display panel and the observer's eyes. It precisely controls light direction and timing to deliver appropriate images to each eye, achieving glasses-free autostereoscopy with proper depth perception and accommodation.
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
Enables observers to view 3D images with improved clarity and reduced resolution loss by generating distinct light paths using a controller and light modulating unit, allowing for autostereoscopic vision without the need for glasses and minimizing the number of light paths, resulting in a more satisfactory 3D experience.
Implementation Method 1
The light modulating unit has a plurality of liquid crystal molecules which are respectively used to change the path of the light when a voltage is applied
Implementation Method 2
a display panel having a plurality of pixels; a light modulating unit, wherein the display panel deposited between the backlight unit and the light modulating unit
Data Source
AI summary
A 3D image display device includes a backlight unit for generating an original light, a display panel, a light modulating unit, and a controller connected to the display panel and the light modulating unit. According to a first signal, the original light passes through the display panel generates a first light, the first light passes through the light modulating unit, and has a first position on an objective plane parallel to the display panel. According to a second signal, the original light passes through the display panel to generate a second light, the second light passes through the light modulating unit and has a second position on the objective plane, wherein the first position is different from the second position.