Vehicle Display Viewing-Angle Control With Hidden Area Boundaries
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Solution Overview
Problem
Display devices in vehicles face challenges in providing information to drivers and passengers without distracting the driver, particularly in controlling the viewing angle and minimizing visibility boundaries between different content areas.
Innovation Solution
A display device with a first light source unit, light controllers, and a light guide plate that controls light emission based on driving modes to adjust viewing angles, using partitions and light control patterns to minimize boundary visibility between areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device provides contents in multiple areas with different viewing angles, then user interaction and information delivery are enhanced, but boundary visibility between areas becomes noticeable
Solution Approach 1:
The patent applies local quality by implementing different light control patterns in different regions of the display. Specifically, a first light control pattern is used in a first area and a second light control pattern is used in a second area, allowing each region to have optimized local properties for its intended viewing angle while minimizing boundary visibility through gradual transition.
2Adaptability or versatility
If light control patterns are used to adjust viewing angles, then viewing angle control is achieved, but the structure becomes more complex
Solution Approach 1:
The patent segments the light control function into multiple independent light control patterns that can be selectively activated. The light controller includes a first light control pattern and a second light control pattern that can be independently controlled, allowing the system to achieve different viewing angle configurations without requiring a completely different structural design for each mode.
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
Enables wide or narrow viewing angles in different areas based on driving modes, reducing distractions and enhancing user interaction with the display.
Implementation Method 1
a light guide plate which is disposed to be parallel to the second light source unit and guides light provided from the second light source unit
Implementation Method 2
a light control pattern which scatters and/or irregularly reflects incident light is disposed in a third area including a boundary line between a first area and a second area so that a boundary visibility between the first area and the second area can be reduced or minimized
Implementation Method 3
a light control pattern which scatters and/or irregularly reflects incident light is disposed in a third area including a boundary line between a first area and a second area
Data Source
AI summary
A display device can include a first light source unit having a plurality of first light sources, a first light controller disposed on the first light source unit and having a plurality of partitions overlapping at least a partial area of the active area, a second light controller disposed on the first light controller and having a plurality of light control patterns overlapping at least a partial area of the active area, a second light source unit disposed on the second light controller and having plurality of second light sources, a light guide plate disposed to be parallel to the second light source unit and configured to guide light provided from the second light source unit, and a display panel disposed on the light guide plate and configured to display an image using light provided from the first light source unit or the second light source unit.