Viewing Angle Control Unit for Driver-Focused Display Visibility
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Solution Overview
Problem
Display apparatuses can cause accidents due to gaze dispersion of people around a user, as they often provide images that can be seen from unintended directions, distracting drivers and increasing the risk of accidents.
Innovation Solution
A display apparatus with a viewing angle control unit that includes light-blocking patterns to limit the viewing angle of certain areas, allowing selective visibility of images based on direction, using a first and second light-source element to control the viewing mode, and a viewing angle control unit between light-guide plates to manage light travel paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a display apparatus provides images in multiple display areas without viewing angle control, then information accessibility is improved, but gaze dispersion occurs causing safety hazards
Solution Approach 1:
The patent applies local quality by implementing different viewing angle characteristics in different display areas. The first display area has a first viewing angle range while the second display area has a second viewing angle range, allowing each area to serve its specific function with appropriate visibility characteristics for its intended audience.
Solution Approach 2:
The patent segments the display apparatus into multiple display areas with independent viewing angle control. Each display area can be configured with different viewing angle ranges, enabling selective visibility control for different groups of users (e.g., driver vs. passengers) without affecting other areas.
2Object-affected harmful factors
If viewing angle is limited to prevent gaze dispersion, then safety is improved, but visibility for intended users may be restricted
Solution Approach 1:
The patent ensures that each display area has optimized viewing angles tailored to its intended users. The first display area is optimized for driver visibility while the second display area is optimized for passenger visibility, ensuring that safety restrictions do not compromise the ability of intended users to view their designated information.
3Loss of information
If multiple images are displayed simultaneously for different users, then information accessibility is improved, but control complexity increases
Solution Approach 1:
The patent simplifies control complexity by segmenting the display into independent display areas, each with its own viewing angle characteristics. This allows for independent control and optimization of each area without requiring complex coordinated control of the entire display system.
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
Prevents accidents by ensuring critical driving information is only visible to the driver while allowing passengers to see additional images, enhancing safety by controlling gaze dispersion.
Implementation Method 1
The first area of the viewing angle control unit may block at least a portion of light from the first light-source element emitted in a direction different from the first direction from reaching the first display area of the display panel
Data Source
AI summary
A display apparatus includes a first light-source element and a first light-guide plate on the substrate. The display apparatus includes a second light-source element and a second light-guide plate. The second light-source element may be configured to be turned on or off depending on a narrow viewing mode or a wide viewing mode. A display panel on the second light-guide plate may be configured to receive light and generate an image, the display panel including a first display area and a second display area. The display apparatus includes a viewing angle control unit between the first light-guide plate and the second light-guide plate. A first area of the viewing angle control unit may overlap the first display area of the display panel, and the viewing angle control unit may include at least one or more light-blocking patterns extending in a first direction in the first area.