Pixel Circuit Viewing Angle Control for In-Vehicle Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display apparatuses in vehicles face challenges in providing information without distracting drivers, as existing technologies lack efficient control over pixel circuits to manage light emission and viewing angles effectively.
Innovation Solution
A display apparatus with a mode controller generating control signals using gate-off and gate-on voltages to manage a pixel circuit comprising driving transistors and light emitting elements, with lenses optimizing viewing angles for different modes of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a display apparatus provides information to drivers and passengers in a vehicle, then information dissemination is improved, but driver distraction and safety risks increase
Solution Approach 1:
The display apparatus divides the display area into multiple regions with different viewing angle characteristics. The first region provides a first viewing angle range optimized for driver visibility, while the second region provides a second viewing angle range optimized for passenger visibility. This local differentiation allows information to be selectively displayed to different users without causing driver distraction.
Solution Approach 2:
The pixel circuit is segmented into multiple independent light emitting elements, each可控 by separate control signals. This segmentation enables selective activation of specific light emitting elements based on the intended viewer (driver or passenger), allowing information to be directed to specific regions without affecting the driver's attention.
2Adaptability or versatility
If multiple light emitting elements are used in a pixel circuit, then display versatility and viewing angle control are improved, but pixel circuit complexity increases
Solution Approach 1:
The pixel circuit uses a shared driving transistor and common electrical connections for multiple light emitting elements. The driving transistor controls the overall operation of the pixel circuit, while separate control signals selectively activate specific light emitting elements. This multi-functional design achieves versatile viewing angle control without proportionally increasing circuit complexity.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Disclosed is a display apparatus comprising 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.