Parallax Barrier Viewing Center Alignment Method
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Solution Overview
Problem
Inconsistent positioning of the viewing center in parallax barrier 3D displays due to insufficient assembly and positioning precision, leading to deviations and low product quality during mass production.
Innovation Solution
The method involves disposing alignment markers on the parallax barrier and flat panel display, using high precision alignment tables with microscopy equipment to measure and align these markers, ensuring the viewing center is set at a specific and appropriate position by controlling the displacement of the parallax barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional assembly methods are used without alignment markers, then the assembly process is simple, but the positioning precision of the viewing center deteriorates
Solution Approach 1:
Alignment markers are pre-disposed on the parallax barrier and flat panel display before assembly. This preliminary positioning enables high-precision alignment during assembly without complex real-time adjustment mechanisms, resolving the contradiction between positioning precision and assembly complexity
Solution Approach 2:
Alignment markers serve as intermediary elements that mediate between the parallax barrier and flat panel display. These markers provide reference points for precise positioning, enabling accurate viewing center alignment without directly complicating the main assembly process
2Measurement precision
If manual positioning methods are used, then the equipment requirement is low, but the measurement precision and alignment accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical measurement methods with optical microscopy equipment for measuring alignment marker positions. This substitution enables high-precision measurement while keeping the equipment relatively simple, resolving the contradiction between measurement precision and equipment complexity
Solution Approach 2:
Alignment markers act as intermediary reference objects that enable precise measurement by microscopy equipment. These markers provide stable, detectable reference points that facilitate accurate position measurement without requiring complex measurement systems
3Reliability
If mass production is implemented without standardized alignment markers, then the production speed is high, but the consistency of viewing center positioning deteriorates
Solution Approach 1:
Alignment markers are pre-disposed on components before assembly in a standardized manner. This preliminary preparation enables rapid assembly during mass production while ensuring consistent positioning results, resolving the contradiction between production efficiency and positioning consistency
Solution Approach 2:
The patent establishes standardized parameters for alignment marker disposition and measurement. By controlling these parameters (marker positions, measurement methods, alignment criteria), the patent achieves consistent viewing center positioning across mass production without sacrificing production speed
Data Source
AI summary
A method for positioning a viewing center of a parallax barrier mainly includes: disposing multiple alignment markers respectively at appropriate places of the parallax barrier and a flat panel display, and performing position measurement and alignment of the multiple alignment markers, so as to achieve a purpose of setting a viewing center at a specific and appropriate position.