Electrostatic Shield Dissipating Charge on Optical Module Control Board
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Solution Overview
Problem
Head-mounted devices are susceptible to performance disruptions due to electrostatic discharge and electrostatic coupling, which affect the operation of electronic components such as optical module control boards and electrical connectors.
Innovation Solution
Incorporating shields configured to dissipate and redirect electrical charges, including a first shield portion coupled to the optical module control board and a second shield portion coupled to the flexible electrical connector, with grounding components directing charges to the frame for dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic components are exposed to electrostatic discharge or electrostatic coupling, then device operation is disrupted, but adding shields increases device complexity
Solution Approach 1:
The patent employs flexible electrical connectors with integrated shields that have a thin film structure. These flexible shields can bend and conform to the connector's movement while maintaining electrostatic protection, thus protecting electronic components without significantly increasing structural complexity
Solution Approach 2:
The shield structure is nested within the existing device architecture, with shields positioned inside the housing and around electrical connectors. This nested arrangement provides electrostatic protection while utilizing the existing structural space, minimizing the increase in overall device complexity
2Reliability
If shields are added to protect against electrostatic discharge, then reliability improves, but manufacturing complexity increases
Solution Approach 1:
The patent combines the shield function with existing structural components such as the housing and electrical connectors. By integrating shielding into components that already exist in the device, the manufacturing process is simplified as it eliminates the need for separate shield assembly steps while still providing comprehensive electrostatic protection
Solution Approach 2:
The shields are designed to serve multiple functions: they provide electrostatic discharge protection, act as structural support elements, and maintain electrical isolation between components. This multi-functionality reduces the total number of parts needed and simplifies manufacturing by consolidating protective and structural roles into single components
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
The shields effectively limit the buildup of electrical charges, preventing disruptions and maintaining the performance of the optical module control board and electrical connectors, thereby ensuring stable operation of the head-mounted device.
Implementation Method 1
A shield is coupled to the optical module control board and is configured to dissipate an electrical charge
Implementation Method 2
with grounding components directing charges to the frame for dissipation
Data Source
AI summary
A head-mounted device includes a frame and an optical module movably coupled to the frame. The optical module includes a display configured to show content to a user wearing the head-mounted device and an optical module control board electrically coupled to the display. The optical module control board is configured to provide the content to the display. A shield is coupled to the optical module control board and is configured to dissipate an electrical charge.