Display Device Crosstalk Reduction via Position-Based Image Control
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Solution Overview
Problem
Display devices that use optical separating units to create stereoscopic vision often suffer from crosstalk, where images intended for different viewpoints are mixed, leading to a damaged stereoscopic effect and an unnatural viewing experience when the observer's position deviates from the intended viewpoint.
Innovation Solution
A display device with a matrix-arranged pixel structure and an optical separating unit whose structure bodies are angled relative to the vertical direction, with a driving unit that controls the image display based on observer position information to ensure that right-eye and left-eye images are observed at specific positions near the respective eyes, using a non-integral multiple array pitch to minimize crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an optical separating unit is used to separate images for different viewpoints, then stereoscopic vision is achieved, but crosstalk occurs where images for different viewpoints are mixed
Solution Approach 1:
The patent applies dynamics by making the display system adaptive to the observer's position. The driving unit dynamically adjusts which pixels display right-eye or left-eye images based on real-time position detection. This dynamic adaptation allows the system to maintain proper image separation even when the observer moves, thereby reducing crosstalk while preserving the stereoscopic effect.
Solution Approach 2:
The patent implements feedback through the position detecting unit that continuously monitors the observer's position and provides this information to the driving unit. This feedback loop enables the system to adjust the displayed images according to the actual viewing position, ensuring that the correct images are directed to each eye and minimizing crosstalk between left and right eye images.
2Manufacturing precision
If the observer position is fixed at predetermined viewpoints, then image separation is achieved, but the viewing experience becomes unnatural when the observer position deviates
Solution Approach 1:
The system transitions from a static viewpoint approach to a dynamic one where the displayed images are adjusted in real-time based on the observer's actual position. This dynamic adaptation maintains image separation precision across various viewing positions, making the stereoscopic display robust to position deviations while preserving natural viewing experience.
Solution Approach 2:
The patent changes the parameter being controlled from fixed viewpoint coordinates to dynamic position-based image selection. By using position detection data to determine which pixels should display which images, the system adapts to varying observation positions while maintaining proper image separation, thus combining precision with adaptability.
3Object-generated harmful factors
If a non-integral multiple array pitch is used for the optical separating unit, then crosstalk is minimized, but the device complexity increases
Solution Approach 1:
The patent changes the array pitch parameter from an integral multiple relationship to a non-integral multiple relationship between the optical separating unit and pixel array. This parameter change disrupts the periodicity that causes moiré patterns and crosstalk, effectively minimizing harmful interference while the driving unit compensates for the increased configuration complexity through position-based control.
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 effectively suppresses crosstalk, allowing for an improved stereoscopic effect even when the observer's position deviates from the intended viewpoint, by accurately controlling the image display based on position detection data.
Implementation Method 1
it is difficult to display the image completely separated by an effect of diffraction or the like by the optical separating unit
Data Source
AI summary
A display unit including a display area, an optical separating unit configured to separate an image displayed in the display area into images to be observed at a plurality of predetermined observation positions, respectively, a position detecting unit which detects position information of an image observer, and a driving unit which drives the display unit are provided, and the driving unit controls the image to be displayed on the display unit such that a right-eye image is observed at each of a plurality of observation positions located in the vicinity of an observer's right eye and a left-eye image is observed at each of a plurality of observation positions located in the vicinity of an observer's left eye on the basis of the position information from the position detecting unit.