Sub-Pixel Light Control Layout for Narrow Viewing Angle Displays
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Solution Overview
Problem
Existing display devices struggle with controlling the viewing angle for security or image reflection purposes while maintaining luminous efficiency.
Innovation Solution
A display device design featuring separate control signals for sub-pixels in different display areas, with light control patterns and conductive layers to manage light emission, ensuring independent control of viewing angles without reducing luminous efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light control patterns are added to control viewing angle, then viewing angle control is improved, but device complexity increases
Solution Approach 1:
The display area is divided into first and second display areas with different light control patterns. The first display area uses patterns for wide viewing angle while the second display area uses patterns for narrow viewing angle control, allowing different viewing angle requirements to be met in different regions without complicating the entire device
Solution Approach 2:
Different light control patterns are applied to different display areas based on local requirements. The first display area has light control patterns configured for wide viewing angle, while the second display area has patterns configured for narrow viewing angle, optimizing each region's performance for its specific use case
2Measurement precision
If separate control signals are used for different display areas, then viewing angle control precision is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into separate control signals for different display areas. First light emitting control signals control the first display area while second light emitting control signals control the second display area, enabling precise independent control of viewing angles in each region
Solution Approach 2:
The control system dynamically adjusts light emitting control signals based on the specific display area and viewing angle requirements. Different timing and control parameters are applied to different areas, allowing adaptive precision control without requiring a completely separate static control system for each area
3Adaptability or versatility
If light control patterns block part of light, then viewing angle control is improved, but luminous efficiency decreases
Solution Approach 1:
Light control patterns are strategically placed to block light only in specific directions and regions where viewing angle control is needed, while allowing light to pass through in other directions. This localized light blocking minimizes overall energy loss while achieving the desired viewing angle control effect
Solution Approach 2:
The light control patterns use adjustable parameters such as transparency, size, and positioning to optimize the balance between viewing angle control and light transmission. By tuning these parameters, the system achieves effective viewing angle control while minimizing the amount of light blocked, thereby preserving luminous efficiency
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 design allows for controlled narrow viewing angles without compromising luminous efficiency, enhancing security and image reflection management.
Implementation Method 1
a plurality of light control patterns disposed on the first and second sub-pixels and blocking a part of light emitted from the first and second sub-pixels
Data Source
AI summary
A display device includes a substrate including a display area and a non-display area positioned around the display area, a first sub-pixel including a first pixel circuit, a first-first light emitting element electrically connected to the first pixel circuit and controlled by a first light emitting control signal, and a first-second light emitting element which emits light of a same color as the first-first light emitting element, a second sub-pixel including a second pixel circuit, a second-first light emitting element electrically connected to the second pixel circuit and controlled by the first light emitting control signal, and a second-second light emitting element which emits light of a same color as the second-first light emitting element, and a plurality of light control patterns disposed on the first and second sub-pixels and blocking a part of light emitted from the first and sub-pixels.