Automotive Display Panel Frame Structure for Crashworthy Glass Protection
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Solution Overview
Problem
Existing automotive display modules fail to adequately protect occupants from primary and secondary injuries during crashes, particularly due to insufficient structural crashworthiness and potential glass breakage, which can cause lacerations.
Innovation Solution
A frame structure is integrated with a cover substrate using an adhesive, incorporating materials like metals and glass, designed to absorb impact energy and maintain the integrity of the display module, while ensuring low weight and compliance with FMVSS 201 headform impact test criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the display module uses a traditional structure without integrated frame, then the manufacturing process is simpler, but the structural crashworthiness is insufficient and glass breakage occurs during impact
Solution Approach 1:
The patent merges the frame structure with the cover substrate by integrating the frame into the display module housing, creating a unified structure that provides both structural support and crashworthiness. The frame is formed as an integral part of the housing rather than being a separate component, which strengthens the overall structure while maintaining manufacturing efficiency.
Solution Approach 2:
The patent employs composite material construction where the display module combines glass cover substrate, plastic housing, and metal frame elements. This composite approach allows each material to contribute its superior properties: glass for surface durability, plastic for energy absorption, and metal for structural strength during impact events.
2Reliability
If the cover substrate is made thicker to prevent breakage, then the safety improves, but the weight increases and may affect vehicle fuel efficiency
Solution Approach 1:
The patent applies local quality by concentrating structural reinforcement only where needed - specifically at the frame perimeter surrounding the cover substrate. Rather than uniformly thickening the entire cover substrate, the frame provides localized support at the edges where impact forces are most concentrated, preventing glass breakage while minimizing additional weight.
Solution Approach 2:
The patent implements beforehand cushioning by designing the frame structure with energy-absorbing features that prepare the display module for impact events. The frame includes deformable elements and mounting structures that are pre-configured to absorb and dissipate impact energy before it reaches the cover substrate, protecting the glass without requiring increased thickness.
3Stress or pressure
If the frame structure is made more rigid to reduce headform acceleration, then the crashworthiness improves, but the weight increases
Solution Approach 1:
The patent applies dynamics by designing the frame structure with controlled flexibility rather than complete rigidity. The frame includes deformable mounting structures and energy-absorbing elements that can dynamically respond to impact forces by deforming in a controlled manner. This dynamic behavior allows the frame to reduce peak headform acceleration through energy dissipation while maintaining adequate structural support, avoiding the need for excessively heavy rigid construction.
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 frame structure effectively reduces stress on the cover substrate, preventing breakage and maintaining headform acceleration below 80 G, thereby enhancing occupant safety and reducing the risk of secondary injuries.
Implementation Method 1
A frame structure is integrated with a cover substrate using an adhesive
Implementation Method 2
designed to absorb impact energy and maintain the integrity of the display module
Data Source
AI summary
An automotive display module can include a mounting bracket, a display panel, a cover substrate, and a frame member. The mounting bracket can be securable to a component of an automobile. The display panel can be coupled to the mounting bracket and the frame member can be connected to a back side of the cover substrate.