Parallax Barrier Stereoscopic Display with Dynamic Electrode Control
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Solution Overview
Problem
Parallax barrier type stereoscopic image display devices face issues with luminance differences and visual fatigue due to multilayer electrode configurations, leading to degraded image quality and limited viewing angles, especially when using dynamic barrier technology.
Innovation Solution
A parallax barrier type stereoscopic image display device with independently controlled driving electrode channels in multiple layers, where different channel driving voltages are applied to form barrier and open areas, compensating for luminance differences and improving viewing angles by dynamically adjusting the barrier position based on viewer movement or eye position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multilayer electrode configurations are used for dynamic barrier technology, then viewing angle is improved, but luminance difference occurs causing degraded image quality
Solution Approach 1:
The patent applies different voltages to different electrode channels (first channel group vs second channel group) to create local variations in barrier area formation. This local quality adjustment compensates for luminance differences in specific regions caused by multilayer electrode configurations, thereby maintaining image quality while preserving the expanded viewing angle benefits.
Solution Approach 2:
The patent changes the voltage parameter applied to different electrode channels to compensate for luminance differences. By adjusting the voltage applied to the first channel group differently from the second channel group, the system compensates for manufacturing variations and maintains uniform image quality across the display while keeping the multilayer dynamic barrier structure for wide viewing angles.
2Adaptability or versatility
If barrier position is dynamically adjusted based on eye tracking, then viewing angle is compensated, but device complexity increases
Solution Approach 1:
The patent implements dynamic barrier technology where the barrier position can be adjusted in real-time based on eye tracking information. The electrode channels are driven dynamically to shift barrier positions, providing viewing angle compensation that adapts to viewer movement while managing system complexity through controlled dynamic operation.
3Measurement precision
If multiple electrode channels are used for dynamic barrier, then barrier control precision is improved, but luminance difference and visual fatigue occur
Solution Approach 1:
The patent addresses luminance differences in specific barrier regions by applying different voltages to different channel groups. This local quality adjustment compensates for the luminance variations that occur when multiple electrode channels are used, thereby maintaining precise barrier control while eliminating visual fatigue caused by uneven luminance distribution.
Solution Approach 2:
The patent changes the voltage parameter applied to different electrode channels to compensate for luminance differences. By adjusting voltages differently for the first and second channel groups, the system maintains precise barrier control while compensating for luminance variations that cause visual fatigue.
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 reduces luminance differences and enhances display quality by eliminating stripe patterns and 3D crosstalk, improving the overall viewing experience with increased viewing angles and reduced visual fatigue.
Implementation Method 1
the liquid crystal layer LC functions as a barrier area, and when the liquid crystal layer LC is driven to cause light to pass therethrough, the liquid crystal layer LC functions as an open area
Data Source
AI summary
A parallax barrier type stereoscopic image display device comprises: an image panel that display a left-eye image and a right-eye image; a barrier panel that has a switchable barrier comprising a liquid crystal layer, a reference electrode positioned above the liquid crystal layer, and a plurality of driving electrode channels positioned below the liquid crystal layer, each of which is controlled independently, and selectively blocks light from the image panel; and a driver that supplies a reference voltage to the reference electrode and applies a channel driving voltage to the driving electrode channels to form a barrier area and an open area in the switchable barrier.