Liquid Crystal Grating Sub-Electrodes to Reduce 3D Display Signal Delay
Solution Overview
Problem
Existing 3D display technologies face challenges in achieving efficient signal transmission and reducing signal attenuation and delay in large-size 3D display devices due to the high resistance of long electrodes, which affects the performance of naked-eye 3D displays.
Innovation Solution
The liquid crystal grating is designed with strip-shaped electrodes divided into independently arranged sub-electrodes, and a dual transparent grating electrode layer with insulating layers, reducing resistance and signal delay by allowing precise control of light-transmitting and dark-state regions through a human eye tracking module and drive transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If long strip-shaped electrodes are used in large-size 3D display devices, then the display area is increased, but the electrode resistance increases causing signal attenuation and delay
Solution Approach 1:
The patent divides each long strip-shaped electrode into multiple independent sub-electrodes along the first direction. This segmentation reduces the length of each individual electrode, thereby reducing resistance and improving signal transmission performance while maintaining the overall large display area through the collective arrangement of multiple sub-electrodes.
2Reliability
If strip-shaped electrodes are divided into multiple independent sub-electrodes, then signal transmission performance is improved, but device complexity increases
Solution Approach 1:
The electrode structure is segmented into multiple sub-electrodes that are independently controllable, allowing precise control of light-transmitting and dark-state regions. This segmentation, while increasing structural complexity, enables improved signal transmission by reducing individual electrode resistance.
Solution Approach 2:
The patent introduces drive transistors and control circuits that dynamically control the state of each sub-electrode based on eye tracking information. This dynamic control system manages the complexity by enabling precise, adaptive control of light-transmitting and dark-state regions to optimize 3D display performance.
3Manufacturing precision
If dual transparent grating electrode layers with insulating layers are used, then precise control of light and dark regions is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent introduces an insulating layer as an intermediary between the first and second transparent grating electrode layers. This insulating layer prevents electrical short circuits while allowing the dual electrode layers to work together for precise control of light-transmitting and dark-state regions, achieving high manufacturing precision despite increased structural complexity.
4Measurement precision
If human eye tracking module and drive transistors are used for precise control, then 3D display quality is enhanced, but device complexity and cost increase
Solution Approach 1:
The patent implements a feedback control system where the human eye tracking module detects eye position and provides this information to the drive transistors, which then adjust the state of sub-electrodes accordingly. This feedback mechanism enables precise control of light-transmitting and dark-state regions based on real-time eye position, enhancing 3D display quality while managing system complexity through coordinated 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
This design improves signal transmission performance, enables precise control of light and dark regions, and enhances the 3D display experience by reducing moiré patterns and view crosstalk, particularly suitable for large-size 3D displays.
Implementation Method 1
a liquid crystal layer, where the liquid crystal layer is located between the first substrate and the second substrate
Data Source
AI summary
The present disclosure provides a liquid crystal grating and a driving method therefor, and a three-dimensional (3D) display device. The liquid crystal grating includes: a first substrate; a second substrate, where the second substrate and the first substrate are oppositely arranged; a liquid crystal layer, where the liquid crystal layer is located between the first substrate and the second substrate; and a first transparent grating electrode layer located at a side, facing the liquid crystal layer, of the first substrate; where the first transparent grating electrode layer includes a plurality of first strip-shaped electrodes extending in a first direction and arranged at intervals in a second direction, and each of at least part of the first strip-shaped electrodes is divided in the first direction into at least two first strip-shaped sub-electrodes arranged independently.