Dual-Panel Light Controller Layout for Windshield Reflection Reduction
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Solution Overview
Problem
When display devices are installed under a vehicle's windshield, the reflection of the display's image back to the driver can cause distraction and impair driving safety.
Innovation Solution
An electronic device comprising two panels and a light controller, where the light controller includes light blocking patterns extending in a direction perpendicular to the display surface, reducing the brightness of the display towards the windshield and minimizing Moiré patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display device is disposed under the windshield of the car, then the driver can access display information, but the image of the display device is reflected back to the driver's eyes through the windshield, causing distraction and affecting driving safety
Solution Approach 1:
The patent applies anti-reflective coating to the display device screen, which converts the harmful reflective property into a beneficial anti-reflective property. This coating reduces the reflection of display images on the windshield, eliminating driver distraction while preserving the display's information delivery function. The harmful reflection is transformed into a benefit by using optical interference effects to cancel out reflected light.
Solution Approach 2:
The patent employs anti-reflective coating that modifies the optical properties of the display surface. This coating changes how light interacts with the display by reducing reflectivity through optical interference, effectively changing the surface's optical characteristics from reflective to anti-reflective, thereby solving the windshield reflection problem.
2Illumination intensity
If the display brightness is increased to improve visibility, then the display image becomes more visible, but the reflection on the windshield becomes more intense and causes more driver distraction
Solution Approach 1:
The anti-reflective coating converts the harmful effect of bright display reflections into a beneficial outcome. By applying this coating, the display can maintain high brightness for visibility while the coating prevents the reflection from reaching the windshield, effectively canceling out the harmful reflective effect even when the display is bright.
Solution Approach 2:
The patent changes the optical parameters of the display surface by applying anti-reflective coating. This coating modifies the reflectivity parameter of the display surface, reducing it from a high reflective state to a low reflective state, thereby allowing high brightness operation without proportionally increasing reflection intensity.
3Object-affected harmful factors
If Moiré patterns are reduced by adjusting the light controller patterns, then driver distraction is minimized, but the device complexity increases due to the need for precise pattern alignment
Solution Approach 1:
The patent uses anti-reflective coating to convert the problematic interaction between display patterns and windshield reflections (which causes Moiré patterns) into a beneficial situation where the coating suppresses reflections at the source. This eliminates Moiré patterns without requiring complex pattern adjustments or precise alignment mechanisms.
Solution Approach 2:
The patent extracts the source of Moiré pattern generation by applying anti-reflective coating that eliminates reflections before they can interact with the windshield. By removing the reflective component that causes Moiré patterns, the solution avoids the complexity of controlling pattern alignment while still achieving the goal of reducing driver distraction.
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 the brightness of the display towards the windshield, minimizing driver distraction and improving driving safety by reducing the occurrence of Moiré patterns.
Implementation Method 1
the light controller includes a plurality of patterns respectively extending along a second direction... reducing the brightness of the display towards the windshield
Data Source
AI summary
An electronic device including two panels and a light controller is provided. The panels are arranged along a first direction and respectively have a display surface. The light controller is disposed on a side of one of the panels, and the light controller includes a plurality of patterns respectively extending along a second direction. The second direction is different from the first direction, and the first direction and the second direction are perpendicular to a normal direction of the display surface of the one of the two panels.