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HDI PCBs play a crucial role in modern automotive touchscreen modules by managing electrical signals, power, and heat to ensure optimal performance.

They route electrical signals from the touchscreen sensors to the control processor through multiple layers. This routing is essential for handling different types of signals, such as touch inputs and display data.

When a user interacts with the touchscreen, sensors detect touch coordinates and transmit this data through the PCB’s signal paths to the processor, which then adjusts the display accordingly.

Precise signal routing ensures that touch inputs are accurately detected and processed, providing a responsive user interface.

After assessing the impact, the next step I always take is to run Design Rule Checks (DRC).
Early in my career, I made the mistake of thinking that small layout adjustments wouldn’t trigger any issues with DRC. But as I quickly learned, even the tiniest changes could result in violations of clearance rules or affect trace width.

Importance of Schematic Design
When I first ventured into the world of PCB design, developing schematic diagrams was a daunting task.

It wasn’t just about wiring up components—there was a lot more involved in creating a design that would be both functional and manufacturable.

When I first started designing PCBs, I was always in a rush to reduce the overall board size and save on material costs.

So, naturally, I packed traces as close as possible, thinking that if the design rules allowed it, it would work fine.

Big mistake.