Pixel Circuit and Lens Layout for Dual Viewing-Angle Displays
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Solution Overview
Problem
Display apparatuses in vehicles face challenges in providing information without distracting drivers, necessitating efficient control of pixel circuits to manage light emission and viewing angles.
Innovation Solution
A display apparatus with a mode controller generating control signals for gate-off and gate-on voltages, a gate driving circuit, and pixel circuits with transistors and light emitting elements, along with lenses to control viewing angles, allowing separate control of different display regions for varying viewing angles.
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 delivery capability is improved, but driver distraction and safety risks increase
Solution Approach 1:
The display apparatus is divided into multiple display regions with different viewing angle characteristics. A first display region provides a first viewing angle suitable for driver visibility, while a second display region provides a second viewing angle suitable for passenger visibility. This segmentation allows information to be selectively delivered to different users without causing driver distraction.
Solution Approach 2:
Different regions of the display apparatus are assigned different optical properties and viewing angles. The first display region has optical characteristics optimized for driver viewing, while the second display region has characteristics optimized for passenger viewing. This local differentiation enables tailored information delivery to each user group.
2Device complexity
If a single viewing angle is provided for the entire display, then device complexity is reduced, but adaptability to different user positions deteriorates
Solution Approach 1:
The display apparatus is segmented into multiple display regions, each with distinct viewing angle characteristics. This allows the system to provide differentiated viewing experiences for drivers and passengers while maintaining a relatively simple overall structure without requiring complex mechanical adjustment mechanisms.
3Productivity
If control signals are generated using gate-off voltage and gate-on voltage, then pixel circuit control efficiency is improved, but energy consumption increases
Solution Approach 1:
The mode controller generates control signals with periodic switching between gate-off voltage and gate-on voltage to drive the pixel circuits. This periodic action enables efficient control of light emission timing, allowing the display to be turned on only when needed in specific regions, thereby reducing overall energy consumption while maintaining high control efficiency.
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.