PCB Interposer TIM Injection Layout for Heat Dissipation
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Solution Overview
Problem
Electronic devices generate heat during operation, which can lead to component deterioration due to increased temperature, necessitating effective heat dissipation solutions.
Innovation Solution
Incorporation of a thermal interface material (TIM) between printed circuit boards (PCBs) in electronic devices, with specific design features such as openings or through holes for nozzle insertion to facilitate efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If thermal interface material is injected into the space between PCBs, then heat dissipation is enhanced, but the structure becomes more complex requiring additional openings
Solution Approach 1:
The second PCB is segmented with a first opening and a first through hole, creating separate access points for different functions. The first opening allows nozzle insertion for TIM injection, while the first through hole provides an alternative access path, dividing the access function into multiple locations on the PCB structure.
Solution Approach 2:
The first opening acts as an intermediary structure that facilitates the injection of thermal interface material into the confined space between PCBs. This opening serves as a mediator between the external injection system and the internal space where TIM is needed, enabling heat dissipation enhancement without requiring direct access to the entire space.
2Ease of manufacture
If openings are added to PCB for nozzle insertion, then TIM injection is enabled, but manufacturing precision requirements increase
Solution Approach 1:
The first opening and first through hole are pre-formed in the second PCB during the manufacturing process, before the actual TIM injection occurs. This preliminary preparation of access points ensures that the structural integrity of the PCB is maintained while enabling future TIM injection operations without requiring high-precision modifications at the injection stage.
Solution Approach 2:
Instead of creating a single precise opening exactly at the optimal injection point, the design provides multiple access points (first opening and first through hole) with slightly relaxed positioning requirements. This partial redundancy allows for easier manufacturing while still enabling effective TIM injection into the target space.
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
Enhances heat dissipation, reducing temperature and maintaining component functionality and longevity.
Implementation Method 1
a thermal interface material (TIM) configured to transfer heat. The heat generated from the electronic components may be diffused through the TIM
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing, a first printed circuit board, a second printed circuit board, an interposer forming a space between the first printed circuit board and the second printed circuit board, a first electronic component disposed on the first printed circuit board, a second electronic component occupying a first area of the space, and a thermal interface material (TIM) included in the space, wherein the second printed circuit board includes a first opening for inserting a nozzle for injecting the TIM, the first opening corresponding to a second area of the space that is different from the first area.