Forward and Reverse Pattern Labels for LCD Signal Line Identification
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Solution Overview
Problem
In the manufacturing of liquid crystal display devices, the labels on signal lines are difficult to recognize during different manufacturing processes due to their orientation, leading to potential false recognition and mistakes.
Innovation Solution
A substrate with a transparent underlayer featuring signal lines and labels, where at least two adjacent labels are configured as forward and reverse pattern labels, ensuring correct identification regardless of the substrate's orientation, with the option to form these labels on the same or different layers and using barrier patterns for visibility control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If single-direction labels are used on substrates, then the labels are simple to manufacture and clear to read in one orientation, but the labels become difficult to recognize when the substrate orientation changes during different manufacturing processes
Solution Approach 1:
The labeling system is segmented into multiple types (forward-direction labels and reverse-direction labels) that are distributed across the substrate. Each label type is optimized for specific orientation scenarios, allowing the system as a whole to function across multiple orientations without requiring a single label design to perform all functions.
Solution Approach 2:
Different regions of the substrate are assigned different label orientations based on their specific viewing requirements. Forward-direction labels are placed in regions where the substrate will be viewed in the primary orientation, while reverse-direction labels are placed in regions that will be viewed when the substrate is inverted, ensuring each local area maintains readability regardless of overall substrate orientation.
2Ease of operation
If labels are made visible from both directions, then the labels remain recognizable in any substrate orientation, but the manufacturing complexity and potential for errors increase
Solution Approach 1:
Instead of attempting to make all labels readable from both directions simultaneously, the solution inverts the approach by creating pairs of labels: forward-direction labels for one orientation and reverse-direction labels for the opposite orientation. This inversion strategy ensures that whichever orientation the substrate takes, the appropriate label type will be readable, thereby maintaining high recognition accuracy without the complexity of dual-directional readability for each individual label.
3Reliability
If forward and reverse pattern labels are used alternately, then accurate identification is maintained across different manufacturing processes, but the labeling system becomes more complex
Solution Approach 1:
The labeling system achieves universality by designing labels that can serve multiple functions depending on substrate orientation. Forward-direction and reverse-direction labels together form a universal labeling solution that works regardless of whether the substrate is in array manufacturing orientation or cell manufacturing orientation, eliminating the need for separate labeling systems for different processes.
Solution Approach 2:
The label orientation pattern is predetermined and pre-planned during the substrate design phase. By establishing the alternating forward and reverse label pattern in advance, the system ensures that whichever orientation the substrate adopts during manufacturing, the correct labels will be in the proper orientation for reading, thereby ensuring identification accuracy without requiring real-time adjustments or complex dynamic systems.
Data Source
AI summary
A substrate is disclosed. The substrate includes a transparent underlayer, a plurality of signal lines on the transparent underlayer, and a plurality of labels on the transparent underlayer. The plurality of labels respectively correspond to the plurality of signal lines in a one-to-one relationship and are configured to identify the corresponding signal lines, and one of at least two adjacent labels is a forward pattern label, and another one of the at least two adjacent labels is a reverse pattern label.