Dual-Emission Pixel Circuit for Driver Distraction Control
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Solution Overview
Problem
Current display apparatuses for vehicles face challenges in efficiently controlling pixel circuits to prevent distraction during driving, as they struggle to balance content display with the need to limit visual attention on the road.
Innovation Solution
A display apparatus with a mode controller generating control signals using gate-off and gate-on voltages to manage pixel circuits, including transistors and light emitting elements, with lenses optimizing viewing angles to provide focused content to drivers and passengers without overwhelming them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a display apparatus displays content to provide information to users, then information provision capability is improved, but visual distraction to drivers increases
Solution Approach 1:
The pixel circuit is divided into multiple light emitting elements (first light emitting element and second light emitting element), each controlled by separate transistors and control signals. This segmentation enables selective activation of specific light emitting elements based on viewing angle, allowing information to be provided to passengers while minimizing distraction to drivers
Solution Approach 2:
Different light emitting elements are assigned different local qualities through selective control. The first light emitting element can be activated for passenger viewing while the second remains off for driver areas, creating localized information provision that adapts to different spatial zones and reduces harmful visual distraction to drivers
2Adaptability or versatility
If multiple light emitting elements are used to provide different viewing angles, then viewing angle control is improved, but pixel circuit complexity increases
Solution Approach 1:
Multiple light emitting elements and their control circuits are merged within a single pixel circuit structure. The first and second transistors, along with their respective light emitting elements, are integrated into one pixel circuit, allowing viewing angle control functionality to be achieved without proportionally increasing overall device complexity
Solution Approach 2:
The pixel circuit is designed with multi-functionality to serve different viewing angle requirements. By incorporating multiple light emitting elements that can be selectively activated, a single pixel circuit performs multiple functions: providing information to drivers, passengers, or both simultaneously, thereby reducing the need for separate dedicated circuits for each viewing angle
Data Source
AI summary
A display apparatus includes a mode controller configured to generate a first control signal and a second control signal by using a gate-off voltage and a gate-on voltage; a gate driving circuit configured to generate an emission signal; a first pixel circuit including a driving transistor, a first transistor receiving the first control signal, a second transistor receiving the second control signal, a third transistor receiving the emission signal, a first light emitting element connected to the first transistor, and a second light emitting element connected to the second transistor; a first lens disposed on the first light emitting element; and a second lens disposed on the second light emitting element.