Partitioned Display Structure for Viewing Angle Boundary Control
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Solution Overview
Problem
Display devices in vehicles need to provide information to drivers and passengers without distracting from driving operations, particularly by minimizing the visibility boundary between areas with different viewing angles.
Innovation Solution
A display device with a light source unit, light controller, and light guide plate that adjusts the height and width of partitions to control viewing angles, allowing for a wide or narrow field of view based on driving mode, minimizing boundary visibility between areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If partitions have uniform height and width across the display panel, then manufacturing is simple, but boundary visibility between first area and second area increases
Solution Approach 1:
The partition structure implements local quality by having different heights in different areas. Specifically, the first area has partitions with a first height while the second area has partitions with a second height different from the first height. This local differentiation allows each area to have optimized viewing angle characteristics while minimizing boundary visibility between areas.
2Object-affected harmful factors
If partitions have varying heights in different areas, then viewing angle control is improved and boundary visibility is minimized, but device complexity increases
Solution Approach 1:
The partition structure is segmented into multiple regions corresponding to different display areas. The first area and second area are divided into respective partition groups with different height characteristics. This segmentation allows independent optimization of each area's viewing angle properties while maintaining clear distinction between areas through the height variations.
3Ease of operation
If the display provides wide viewing angle for all areas, then accessibility is improved, but driver concentration is compromised due to distraction
Solution Approach 1:
The display device applies local quality by providing different viewing angle characteristics to different areas based on their functional requirements. The first area (driver area) and second area (passenger area) have partitions with different heights that create optimized viewing angles specific to each user's position and needs, allowing wide viewing angle where needed while limiting it where distraction is a concern.
Data Source
AI summary
A display device can include a first light source unit having a plurality of first light sources, a 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 source unit disposed on the light controller and having a 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. The partitions can have a different height in each area and a change rate of a height of the partitions can be different in each area.