Curved OLED Display Mounting Structure for Headform Impact Stiffness
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Solution Overview
Problem
Existing methods for forming curved glass substrates for vehicle interior displays are costly, prone to optical distortion, and surface marking, and OLED displays lack sufficient stiffness to meet headform impact testing requirements when used with conventional mounting structures.
Innovation Solution
A display device comprising a glass substrate with an OLED display sandwiched between a support member and a mounting element, where the support member and mounting element provide a combined stiffness of at least 100 N/mm and effective stiffness of no more than 270 N/mm, achieved through cold-forming processes to maintain structural integrity and meet impact testing standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If thermal forming is used to form curved glass substrates, then the glass substrate can be formed into curved shapes, but the process results in high cost, optical distortion, and surface marking
Solution Approach 1:
The patent changes the temperature parameter from high-temperature thermal forming to room-temperature or low-temperature cold-forming processes. This allows curved glass substrates to be formed without the harmful effects of thermal forming while maintaining the desired curved shape for vehicle interior displays
Solution Approach 2:
The patent replaces the thermal field (heat-based forming) with a mechanical field (cold-forming processes). By using mechanical pressure and force instead of thermal energy, the glass can be shaped without optical distortion or surface marking, resolving the contradiction between achieving curved shapes and maintaining manufacturing quality
2Ease of operation
If conventional mounting structures are used with OLED displays, then the display can be mounted, but the structure lacks sufficient stiffness to meet headform impact testing requirements
Solution Approach 1:
The patent creates a composite mounting structure that combines multiple materials and components (mounting brackets, reinforcement elements, bonding adhesives) to achieve both ease of installation and sufficient stiffness. The composite structure distributes impact forces and provides the required mechanical strength while maintaining ease of mounting
Solution Approach 2:
The mounting structure is divided into separate functional components (mounting brackets for attachment, reinforcement elements for stiffness, bonding layers for connection). This segmentation allows each component to be optimized for its specific function while working together to meet both mounting ease and impact resistance requirements
Data Source
AI summary
Disclosed is a display device for a vehicle interior system. The display device includes a display module having a glass substrate, an organic light emitting diode (OLED) display, and a support member. The glass substrate has a first major surface and a second major surface opposite to the first major surface. The OLED display is disposed on the second major surface of the glass substrate, and the support member includes a first support surface and a second support surface opposite to the first support surface. The OLED display is disposed on the first support surface. The display device also includes a mounting element disposed on the second support surface of the support member. The support member and the mounting element have respective first and second stiffnesses. The first stiffness is at least 100 N/mm, and an effective stiffness of the first and stiffnesses is no more than 270 N/mm.