Shared Heater Terminal Pads for Circuit Board Miniaturization
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Solution Overview
Problem
Current methods for soldering electronic components to circuit boards require multiple micro heater terminal pads, which increases the size and cost of electronic devices, making it challenging to achieve miniaturization.
Innovation Solution
The design incorporates a board and circuit board with shared heater terminal pads between adjacent pad areas, utilizing two micro heaters and a fixture with reduced probe heads to generate heat, thereby reducing the number and area of terminal pads and probe heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate heater terminal pads are used for each micro heater, then each micro heater can be independently controlled, but the number and area of terminal pads increases
Solution Approach 1:
Adjacent pad areas share common heater terminal pads, merging previously separate terminal pad structures. This reduces the total number and area of terminal pads while maintaining independent control through selective electrical connection to different micro heaters.
Solution Approach 2:
Heater terminal pads serve multiple functions by being shared between adjacent pad areas and multiple micro heaters. A single terminal pad structure provides electrical connection points for controlling different micro heaters in different pad areas, achieving multi-functionality.
2Difficulty of detecting and measuring
If multiple probe heads are used in the fixture, then each micro heater terminal pad can be contacted, but the number of probe heads and fixture complexity increases
Solution Approach 1:
The fixture uses fewer probe heads that contact shared terminal pads rather than requiring separate probe heads for each micro heater. This merging approach reduces fixture complexity while maintaining the ability to contact and control all necessary terminal pads.
Solution Approach 2:
Each probe head in the fixture serves multiple functions by contacting shared terminal pads that are common to multiple pad areas. A single probe head can be used to contact terminal pads that serve multiple micro heaters, reducing the total number of probe heads required.
3Manufacturing precision
If more heater terminal pads are used, then heating control precision is improved, but device miniaturization is hindered
Solution Approach 1:
Adjacent pad areas share common heater terminal pads, merging previously separate terminal pad structures. This reduces the total area occupied by terminal pads on the board, enabling device miniaturization while maintaining heating control precision through the shared terminal pad architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach minimizes the number and area of heater terminal pads on the board and circuit board, facilitating device miniaturization, reducing costs, and improving usability and performance.
Implementation Method 1
The first heater terminal pad and the second heater terminal pad form a loop with the first micro heater by being electrically connected to the outside, so that the first micro heater generates heat
Data Source
AI summary
A board, including a first pad area, a second pad area, a first micro heater, a second micro heater, a first heater terminal pad, a second heater terminal pad, and a third heater terminal pad, is provided. The first pad area and the second pad area respectively include at least one pad. The first micro heater and the second micro heater are respectively disposed corresponding to the first pad area and the second pad area. The first heater terminal pad and the second heater terminal pad form a loop with the first micro heater by being electrically connected to an outside, so that the first micro heater generates heat. The second heater terminal pad and the third heater terminal pad form another loop with the second micro heater by being electrically connected to the outside, so that the second micro heater generates heat. A circuit board and a fixture are also provided.