3D Filter Voltage Distribution via Flexible Printed Circuit
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Solution Overview
Problem
Existing stereoscopic image display devices using 3D filters face issues with electrode burnout or shorting due to overcurrent, leading to improper driving of the 3D filter, which affects the display of 2D and 3D images.
Innovation Solution
A stereoscopic image display system comprising a display panel, a 3D filter with a common electrode and divided electrodes, and a flexible printed circuit with multiple wiring groups to distribute distinct driving voltages (V1, V2, and V3) to the electrodes, ensuring stable operation even if electrodes are burnt or shorted, by redistributing voltage through the flexible printed circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single wiring group is used to distribute voltage to the 3D filter electrodes, then the device complexity is reduced, but the reliability deteriorates due to electrode burnout or shorting causing improper driving
Solution Approach 1:
The patent divides the electrode wiring into multiple separate wiring groups (first wiring group for common electrode, second wiring group for first divided electrode, third wiring group for second divided electrode). This segmentation isolates potential failure points, so that if one electrode burns out or shorts, only the corresponding wiring group is affected while other groups continue to function properly, thereby improving overall system reliability.
Solution Approach 2:
The flexible printed circuit board acts as an intermediary component that distributes different driving voltages (V1, V2, V3) through separate wiring groups to the common electrode and divided electrodes. This intermediary structure provides stable voltage distribution and electrical connection between the source PCB and 3D filter, preventing voltage drops and ensuring reliable operation.
2Reliability
If overcurrent protection is not implemented, then the device complexity is reduced, but the reliability deteriorates due to electrode burnout or shorting
Solution Approach 1:
The patent implements protective measures by distributing voltages through separate wiring groups before potential overcurrent damage can occur. The multi-group wiring structure inherently provides protection by isolating current paths, so that if one path experiences overcurrent, the other paths remain unaffected. This beforehand structural design prevents electrode burnout and shorting without requiring additional complex protection circuits.
3Adaptability or versatility
If a single voltage is applied to all electrodes, then the device complexity is reduced, but the adaptability deteriorates for switching between 2D and 3D modes
Solution Approach 1:
The patent applies different driving voltages (V1, V2, V3) to different electrode groups based on their specific functional requirements. The common electrode receives V1, while the divided electrodes receive V2 or V3 depending on the desired mode. This localized voltage application enables precise control of liquid crystal orientation in different regions, facilitating reliable switching between 2D and 3D display modes.
Solution Approach 2:
The patent enables dynamic switching between 2D and 3D modes by dynamically changing the voltage applied to the divided electrodes through the second and third wiring groups. In 2D mode, one voltage configuration is applied, while in 3D mode, a different voltage configuration is applied. This dynamic voltage control allows the 3D filter to adapt its optical properties in real-time, achieving versatile display mode switching.
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 system allows for reliable switching between 2D and 3D modes without electrode damage, maintaining image quality and preventing voltage drops across electrodes, thus enhancing the reliability of the stereoscopic image display.
Implementation Method 1
switch between 2D image and 3D image by changing or refracting the traveling path of light incident from the display panel by using dielectric anisotropy and refractive index anisotropy of liquid crystal molecules
Implementation Method 2
switch between 2D image and 3D image by changing or refracting the traveling path of light incident from the display panel by using dielectric anisotropy and refractive index anisotropy of liquid crystal molecules
Implementation Method 3
The 3D filter comprises electrodes for applying an electric filed to the liquid crystal layer
Data Source
AI summary
3D filter driving voltages can be stably supplied to the 3D filter via flexible printed circuit for distributing first to third voltages of the 3D filter driving voltage, even if electrodes of the 3D filter are shorted, by supplying the 3D filter driving voltages to the 3D filter in a distributed fashion.