Stereoscopic Display Align Mark for Retarder Positioning
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Solution Overview
Problem
The alignment process between pattern retarders and display panels in stereoscopic image display apparatuses is prone to errors, leading to increased production costs and reduced 3D image quality due to the need for separate align marks and manual alignment, which disrupts the continuous manufacturing process and can result in misalignment between the retarder patterns and pixel arrays.
Innovation Solution
The implementation of align marks on the display panel, including a first and second align mark with offset patterns, aligned with a reference line based on the polarization selection patterns of the pattern retarder, allows for precise alignment using a vision system and control computer, eliminating the need for separate align marks on the retarder and enabling continuous manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate align marks are formed on both the display panel and the pattern retarder, then alignment accuracy can be improved, but the manufacturing process complexity increases and continuous production is disrupted
Solution Approach 1:
The invention extracts the align mark formation step from the pattern retarder manufacturing process, leaving only the display panel with align marks. This eliminates the need to form align marks on the pattern retarder, thereby simplifying the manufacturing process and enabling continuous production while maintaining alignment accuracy through the remaining align marks on the display panel
Solution Approach 2:
The align marks are formed on the display panel in advance before the pattern retarder is attached. This preliminary action allows the alignment process to proceed efficiently by referencing these pre-formed marks, eliminating the need for additional align mark formation steps during the assembly process
2Manufacturing precision
If manual alignment processes are used, then alignment precision can be improved, but production time increases and productivity decreases
Solution Approach 1:
The alignment process becomes self-service through the use of reference lines and align marks that automatically guide the positioning. The system uses the pre-formed align marks on the display panel and corresponding marks on the pattern retarder to achieve automatic alignment, eliminating the need for complex manual measurement and adjustment processes while maintaining high precision
Solution Approach 2:
The invention replaces manual mechanical alignment procedures with an optical/reference-based system. By using reference lines and align marks visible through the pattern retarder, the alignment process is substituted with a visual/reference-guided mechanism that enables faster, more consistent positioning without manual intervention
3Manufacturing precision
If align marks are formed on the pattern retarder, then alignment accuracy is improved, but the manufacturing cost increases
Solution Approach 1:
The invention extracts the align mark formation step from the pattern retarder manufacturing process. By eliminating the need to form align marks on the pattern retarder, the manufacturing cost is reduced while alignment accuracy is maintained through the use of align marks only on the display panel
Solution Approach 2:
The invention discards the unnecessary step of forming align marks on the pattern retarder. The alignment function is recovered and maintained by keeping align marks on the display panel, which serve the same alignment purpose without the additional cost and complexity of forming marks on the pattern retarder
Data Source
AI summary
An align marking for a stereoscopic image display apparatus and an alignment method and system using the align marking are discussed. The align marking includes a first align mark formed at a left and central portion of the display panel, and a second align mark formed at a right and central portion of the display panel, wherein each of the first and second align marks comprises one or more left patterns and one or more right patterns arranged offset from the one or more left patterns, wherein the first and second align marks are aligned with a predetermined reference line formed on the pattern retarder.