Display PCB Connection Pattern for Reliable Terminal Contact
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Solution Overview
Problem
Existing display apparatuses face challenges in efficiently connecting terminals on printed circuit boards due to spacing and thickness inconsistencies, leading to potential electrical interference and connectivity issues.
Innovation Solution
A display apparatus design featuring a connection pattern on a cover portion that includes parallel, wide, and thick conductive linear patterns connecting terminals, with an insulating adhesive layer, ensuring proper alignment and coverage of terminals, thereby enhancing electrical connectivity and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are spaced apart on the printed circuit board, then connectivity issues are reduced, but the area required for connection increases and manufacturing complexity increases
Solution Approach 1:
The connection pattern extends in the thickness dimension (Z-axis) by forming conductive patterns with varying thicknesses. The first and second terminal connection portions have greater thickness than the intermediate connection portion, utilizing the thickness dimension to achieve reliable electrical connection without increasing the planar area footprint.
Solution Approach 2:
Different portions of the connection pattern have different thicknesses tailored to their specific functions. The terminal connection portions (first and second) have greater thickness for reliable electrical contact, while the intermediate portion has lesser thickness to minimize area occupation. This local differentiation resolves the contradiction between connection reliability and area efficiency.
2Reliability
If connection patterns are made thick for better electrical connection, then conductivity improves, but manufacturing precision requirements increase
Solution Approach 1:
The connection pattern utilizes changes in the thickness parameter to achieve different functional characteristics. By varying the thickness from the intermediate portion to the terminal connection portions, the design achieves reliable electrical conductivity without requiring uniform thickness throughout, thereby reducing overall manufacturing precision requirements while maintaining connection reliability.
Data Source
AI summary
A display apparatus includes: a substrate; a display layer located on a first surface of the substrate; a cover panel located on a second surface, opposite to the first surface, of the substrate; a printed circuit board located on the cover panel; a plurality of first terminals located on a first side of the printed circuit board; a plurality of second terminals spaced apart from the plurality of first terminals; a cover portion covering the printed circuit board; and a connection pattern located on a surface of the cover portion and arranged within a perimeter of the printed circuit board, wherein the surface of the cover portion faces the printed circuit board.