Shielding Layer Alignment Marks for PCB Contact
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Solution Overview
Problem
Existing display device manufacturing processes face challenges in ensuring accurate alignment and electrical connection between the printed circuit board and the shielding layer, which affects the reliability of the manufacturing process and the electrical performance of the display device.
Innovation Solution
The proposed solution involves aligning a printed circuit board on a shielding layer using alignment marks, ensuring that the printed circuit board is in contact with the conductive members of the shielding layer, which electrically connect the two components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If alignment marks are not used, then the manufacturing process is simpler, but the alignment precision between printed circuit board and shielding layer deteriorates
Solution Approach 1:
Alignment marks are pre-formed on the shielding layer before the printed circuit board is positioned. This preliminary marking enables precise alignment during assembly without complicating the overall manufacturing process, as the marks serve as ready-made reference points for board placement
2Device complexity
If alignment marks are not used, then the device structure is simpler, but the alignment accuracy deteriorates
Solution Approach 1:
The alignment marks are incorporated into the shielding layer structure during its formation process, rather than adding separate alignment components. This preliminary integration maintains structural simplicity while providing the necessary alignment reference points for accurate board positioning
3Reliability
If alignment marks are used, then the manufacturing reliability is improved, but the device complexity increases
Solution Approach 1:
The alignment marks are merged with the shielding layer as an integrated feature rather than a separate component. The shielding layer serves dual purposes: providing electromagnetic shielding functionality and providing alignment reference marks, thereby improving manufacturing reliability without increasing overall device complexity
Data Source
AI summary
A display device includes a display panel, a shielding layer which is disposed at a lower end of the display panel and includes a plurality of alignment marks, and a printed circuit board which is aligned on the shielding layer, based on the plurality of alignment marks, and contacts at least a portion of the shielding layer. The shielding layer includes conductive members electrically connecting the printed circuit board and the shielding layer.