Transparent Display Panel Light Control for Windshield Glare
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Solution Overview
Problem
Light beams emitted by display panels at certain angles can negatively affect image quality, such as causing stray light that distracts drivers in vehicle displays.
Innovation Solution
An electronic device with a panel and a light control unit that adjusts the angle of light beams, using a light control unit with electrically controllable optical properties to suppress specific light directions, reducing glare and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a full-screen display panel is used to maximize display area, then the area of the display increases, but the display effect in camera area or infrared induction area deteriorates
Solution Approach 1:
The display panel is divided into different functional regions: a first light-emitting region for normal display and a transparent region for camera and infrared induction areas. This segmentation allows each region to serve its specific function without interfering with others, resolving the conflict between maximizing display area and maintaining camera area performance
Solution Approach 2:
Different regions of the display panel are assigned different optical properties: the light-emitting region is opaque for light emission, while the transparent region allows light transmission for camera and sensor functions. This local differentiation of properties enables the panel to simultaneously achieve high display area and maintain camera area effectiveness
2Adaptability or versatility
If light beams are emitted at various angles to cover wide viewing area, then the viewing angle increases, but stray light reflections increase affecting driver attention
Solution Approach 1:
The light control unit is positioned specifically over the first light-emitting region to selectively control light emission angles. This localized control allows the system to maintain wide viewing angles for normal display while preventing large-angle light beams that cause windshield reflections and driver distraction
Solution Approach 2:
The light control unit acts as an intermediary between the display panel and the external environment, selectively modulating light beams based on their emission angles. It allows beneficial light beams within optimal viewing angles to pass through while blocking harmful large-angle beams that would reflect off the windshield and distract the driver
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 stray light reflections, enhancing image clarity and minimizing driver distraction by controlling light angles.
Implementation Method 1
The light control unit is overlapped with the first light-emitting region and is used to adjust an angle of light beams emitted by the panel
Implementation Method 2
a large-angle light beam (for example, an upward light beam) output by the display panel may be reflected by a windshield to produce stray light
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An electronic device (1) including a panel (10) and a light control unit (12) is provided. The panel (10) includes a first light-emitting region (E1) and a transparent region (T) disposed adjacent to the first light-emitting region (E1). The light control unit (12) is disposed on the panel (10), wherein the light control unit (12) is overlapped with the first light-emitting region (E1).