Directional Pixel Driving for Driver-Restricted Display Viewing
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Solution Overview
Problem
Existing display devices do not effectively restrict image viewing in specific directions, which can be a safety concern, especially in vehicles where the driver's attention should not be distracted.
Innovation Solution
A display device with a display panel containing pixels with both first and second light emitting elements, controlled by separate driving circuits, allows selective emission based on operating modes to control light output directionally, ensuring the driver's view is not obstructed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device provides images to all directions, then all users can view the image, but the driver may be distracted from the road
Solution Approach 1:
The display device is divided into multiple pixel regions, each with independent light emitting elements controlled by separate driving circuits. This segmentation allows different regions to emit light in different directions, enabling the driver's view to be restricted while maintaining visibility for other users.
Solution Approach 2:
Different regions of the display panel are assigned different light emission characteristics. Specifically, certain pixel regions are configured to emit light primarily toward non-driver users, while restricting light emission toward the driver's direction, thus creating local directional control.
2Adaptability or versatility
If separate light emitting elements and driving circuits are used for each pixel, then directional light control is achieved, but device complexity increases
Solution Approach 1:
Each pixel is designed with multiple light emitting elements that can serve different directional functions. The same pixel structure and driving circuit architecture are reused across different pixel regions, allowing the system to achieve complex directional control while maintaining manufacturing efficiency and reducing overall system complexity.
Solution Approach 2:
The display device dynamically controls the emission state of different light emitting elements based on operating modes. By selectively activating or deactivating specific driving circuits and light emitting elements, the system achieves adaptable directional control without requiring permanent physical structures for each direction.
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 enables the display device to selectively emit light in specific directions, ensuring the driver can see essential information while preventing distractions, enhancing safety in vehicle environments.
Implementation Method 1
Each of the plurality of pixels is configured to emit light through the first light emitting element when a corresponding first emission signal from among the first emission signals is at an active level, and emit light through the second light emitting element when a corresponding second emission signal from among the second emission signals is at the active level
Data Source
AI summary
A display device includes: a display panel; a first light emitting driving circuit to provide first emission signals; and a second light emitting driving circuit to provide second emission signals. The display panel includes: a plurality of pixels, each including a first light emitting element and a second light emitting element; and a light control pattern overlapping with the second light emitting element of each of the plurality of pixels in a plan view. Each of the plurality of pixels is to emit light through the first light emitting element when a corresponding first emission signal is at an active level, and emit light through the second light emitting element when a corresponding second emission signal is at the active level. A part of the first emission signals and the second emission signals remains at an inactive level during at least one frame based on an operating mode.