In-Vehicle OLED Frame Structure for Lateral Impact Absorption
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Solution Overview
Problem
Transparent OLEDs used in partition type display devices are vulnerable to damage or scattering during side collisions due to lack of support on the back side, making them susceptible to lateral impacts.
Innovation Solution
The in-vehicle display device is supported by a vehicle body with a frame structure that includes a rear bezel fixed to the vehicle body, a front bezel attached to the rear bezel, and a frame with a movable outer edge portion that absorbs lateral impacts by moving the OLED panel relative to the rear bezel, or incorporates an impact absorption member between the bezel and frame to absorb the impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent OLED panel is supported only by a frame-shaped frame on both sides, then the transparency and visibility of the back portion is improved, but the vulnerability to lateral impact increases
Solution Approach 1:
The patent introduces a frame extension portion that protrudes from the frame toward the OLED panel, creating a cushioning structure before impact occurs. This extension portion absorbs lateral impact forces before they reach the OLED panel, preventing damage while maintaining the transparent OLED's visibility characteristics.
Solution Approach 2:
The frame extension portion acts as an intermediary element between the frame and the OLED panel. It mediates the transmission of lateral forces, absorbing and dissipating impact energy before it can directly affect the fragile OLED panel, thus protecting the transparent display while maintaining structural support.
2Stability of the object's composition
If the OLED panel is rigidly fixed to prevent movement, then structural stability is improved, but impact damage during side collision increases
Solution Approach 1:
The patent creates a dynamic support system where the OLED panel can move relative to the frame through the frame extension portion. This dynamic configuration allows the panel to absorb impact forces through controlled movement and deformation, converting static structural stability into dynamic impact absorption capability.
Solution Approach 2:
The frame extension portion changes the mechanical parameters of the support system by introducing a deformable element. This extension allows the system to transition from rigid fixation to controlled deformation under impact, changing the stress distribution and reducing peak forces on the OLED panel during lateral collisions.
3Reliability
If a support structure is added on the back side of the OLED panel, then impact resistance is improved, but the transparency and visibility of the back portion deteriorates
Solution Approach 1:
The patent segments the support function from the main frame structure by adding a frame extension portion that protrudes toward the OLED panel. This segmented approach provides localized support and impact absorption at critical areas without requiring a complete back-side support structure, thereby maintaining transparency while improving impact resistance.
Solution Approach 2:
Instead of adding support from the back side (z-dimension), the patent extends the frame in the lateral direction (x-dimension) through the frame extension portion. This dimensional shift allows impact absorption to occur before forces reach the OLED panel, maintaining back-side visibility while providing protective support.
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 solution effectively reduces and absorbs lateral impacts on the OLED panel, preventing damage and scattering during side collisions, while maintaining the panel's structural integrity.
Implementation Method 1
The display panel is supported so as to be movable together with the frame with respect to the rear bezel by the frame extension portion being pressed by the side portion deformed due to an impact applied from a lateral side of the vehicle body
Implementation Method 2
an impact absorption member disposed at least between a side portion of the front bezel and the frame. The display panel is supported such that at least a part of a load applied via the frame by the side portion deformed due to an impact applied from a lateral side of the vehicle body is absorbable by the impact absorption member
Data Source
AI summary
An in-vehicle display device capable of reducing an impact applied to a vehicle body from a lateral direction is provided. The display device includes a rear bezel fixed to the vehicle body, a front bezel attached to the rear bezel, a frame including an outer edge portion attached to the front bezel, a display panel including an outer peripheral edge fixed to an inner peripheral edge of the frame, and a frame extension portion extending from the frame and disposed at least close to a side portion of the front bezel. The display panel is supported so as to be movable together with the frame with respect to the rear bezel by the frame extension portion being pressed by the side portion deformed due to an impact applied from a lateral side of the vehicle body.