Display Panel Cover PCB Alignment With Transparent Grounding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the manufacturing of display devices, misalignment of the main printed circuit board and protective member on the display panel cover can lead to deteriorated driving reliability.
Innovation Solution
The display device includes alignment marks on the panel cover to align the printed circuit board, with a protective member having transparent portions overlapping ground areas on the circuit board, ensuring accurate positioning and reliable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the main printed circuit board and protective member are disposed without alignment marks, then the manufacturing process is simpler, but the alignment precision and driving reliability deteriorate
Solution Approach 1:
The alignment marks are formed on the panel cover before the printed circuit board is disposed thereon. This preliminary formation of alignment marks enables precise alignment of the printed circuit board during assembly, ensuring that the ground areas are accurately positioned under the transparent portions of the protective member without requiring complex alignment procedures during manufacturing.
2Reliability
If the protective member covers the entire printed circuit board, then the protection is more comprehensive, but the electrical grounding and driving reliability deteriorate
Solution Approach 1:
The protective member includes transparent portions at specific locations corresponding to the ground areas of the printed circuit board. This local differentiation allows the protective member to provide comprehensive protection while maintaining electrical grounding functionality in critical areas, ensuring driving reliability without compromising manufacturing simplicity.
3Manufacturing precision
If alignment marks are added to the panel cover, then the alignment precision improves, but the manufacturing complexity increases
Solution Approach 1:
The alignment marks are formed on the panel cover before the printed circuit board is disposed thereon. This preliminary formation of alignment marks enables precise alignment of the printed circuit board during assembly, ensuring that the ground areas are accurately positioned under the transparent portions of the protective member without requiring complex alignment procedures during manufacturing.
Data Source
AI summary
A display device includes: a display panel; a panel cover disposed on a back surface of the display panel and including one or more alignment marks located on a back surface of the panel cover; a printed circuit board disposed on the back surface of the panel cover and including a ground area located around the one or more the alignment marks; and a protective member disposed on the printed circuit board and including a transparent portion at least partially overlapping the ground area in a plan view.