Transparent Rear Windshield Display With Pitch-Tuned Visibility
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Solution Overview
Problem
Existing displays on rear windshields of transportation vehicles obstruct the view of drivers in following vehicles, compromising driving safety by blocking the rear view and traffic situation.
Innovation Solution
A transparent display is designed for the rear windshield of transportation vehicles, featuring a first transparent substrate with pixel structures, first and second electrodes, and light-emitting elements. The pixel structures are arranged with specific pitches to ensure visibility from a distance while preventing obstruction for drivers in front.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a general display is used on the rear windshield, then driving information can be displayed to the driver of the following vehicle, but the display obstructs the rear view of the driver of the vehicle in front
Solution Approach 1:
The display uses transparent or translucent materials that allow light to pass through, enabling the display to change its optical properties from opaque to transparent. This allows driving information to be displayed while maintaining visibility of the rear view through the windshield, resolving the contradiction between information display and view obstruction.
Solution Approach 2:
The display structure changes physical parameters such as material transparency and pitch dimensions to achieve optimal balance between display visibility and rear view penetration. By adjusting the pitch between light-emitting elements to 0.17mm-0.34mm and pixel structures to 3.4mm-15.4mm, the display provides sufficient information visibility while allowing rear view passage.
2Measurement precision
If the pitch between light-emitting elements is reduced to improve display resolution, then driving information becomes more readable, but the display may obstruct the rear view more significantly
Solution Approach 1:
The patent optimizes the pitch parameters within specific ranges (0.17mm-0.34mm for light-emitting elements, 3.4mm-15.4mm for pixel structures) to achieve the best balance between display resolution and rear view visibility. These parameter changes ensure sufficient readability while maintaining transparency for rear view passage.
Solution Approach 2:
The display system can dynamically adjust its operational state, switching between different transparency modes or brightness levels to adapt to different driving conditions, ensuring both high resolution display and adequate rear view visibility as needed.
3Object-affected harmful factors
If the pitch between pixel structures is increased to reduce obstruction, then rear view visibility improves, but display resolution decreases
Solution Approach 1:
The patent establishes optimal pitch ranges for pixel structures (3.4mm-15.4mm) that balance rear view visibility and display resolution. Within this range, the display achieves sufficient readability while maintaining adequate transparency for rear view passage.
Solution Approach 2:
The use of transparent and translucent materials with optimized optical properties allows the display to maintain resolution while minimizing visual obstruction, as the light-emitting elements blend with the transparent background rather than blocking it completely.
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 transparent display improves driving safety by allowing drivers in following vehicles to see the traffic situation behind the vehicle with the display, while ensuring that the display does not obstruct the view of drivers in front.
Implementation Method 1
Each of the plurality of pixel structures includes a plurality of light-emitting elements
Data Source
AI summary
A transparent display includes a first transparent substrate, pixel structures, first electrodes, and second electrodes. The pixel structures are located on the first transparent substrate. Each pixel structure includes light-emitting elements. A pitch of adjacent light emitting elements in each pixel structure is 0.17 mm to 0.34 mm. A pitch of adjacent pixel structures is 3.4 mm to 15.4 mm. The first electrodes and the second electrodes are electrically connected to the pixel structures.