Alternating Viewing-Angle Display Circuit Without Extra Scan Drivers
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Solution Overview
Problem
Display devices require additional scan drivers for generating and controlling various viewing angle signals, which occupy extra space and increase power consumption.
Innovation Solution
A display device with a viewing angle controller that alternately displays image data at different viewing angles using first and second light emitting circuits, each with a respective viewing angle control transistor, reducing the need for additional scan drivers and sharing compensation circuits to minimize dead space and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional scan drivers are used to generate and control various viewing angle signals, then viewing angle control capability is improved, but device area and power consumption increase
Solution Approach 1:
The patent combines multiple viewing angle control functions into a single scan driver by using alternating frame techniques. The scan driver generates both first viewing angle signals (for normal viewing angle in odd frames) and second viewing angle signals (for narrow viewing angle in even frames) without requiring separate dedicated scan drivers for each viewing angle mode, thereby reducing device area while maintaining viewing angle control capability.
Solution Approach 2:
The patent implements periodic switching between different viewing angle modes by alternating between odd frames (normal viewing angle) and even frames (narrow viewing angle). This periodic action allows a single scan driver to serve multiple viewing angle control functions, reducing the need for additional hardware components and decreasing device area.
2Adaptability or versatility
If additional scan drivers are used to generate and control various viewing angle signals, then viewing angle control capability is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple viewing angle control functions into a single scan driver, eliminating the need for additional dedicated scan drivers for each viewing angle mode. This consolidation reduces the number of active components and their associated power consumption while maintaining the ability to control both normal and narrow viewing angles.
Solution Approach 2:
By using periodic alternating frames to switch between normal and narrow viewing angle modes, the patent allows a single scan driver to handle multiple viewing angle control tasks. This approach reduces the total power consumption compared to having separate continuously active scan drivers for each viewing angle mode.
3Adaptability or versatility
If multiple light emitting circuits with different viewing angles are implemented, then viewing angle flexibility is improved, but dead space increases
Solution Approach 1:
The patent uses periodic alternating frames where odd frames display content for normal viewing angle and even frames display content for narrow viewing angle. This time-division multiplexing approach allows multiple light emitting circuits with different viewing angles to share the same physical space, eliminating dead space while maintaining viewing angle flexibility.
Solution Approach 2:
The patent implements dynamic switching between different viewing angle modes by controlling the activation of different light emitting circuits based on the frame type (odd or even). This dynamic control allows the display to adapt between normal and narrow viewing angles without requiring permanent dedicated structures for each mode, thereby reducing dead space.
Data Source
AI summary
A display device includes a display panel, a gate driver, a data driver, an emission driver, a driving controller, and a viewing angle controller for providing the display panel with a first viewing angle signal and a second viewing angle signal, in which display image data are alternately displayed on the display panel with different viewing angles by a first light emitting circuit and a second light emitting circuit in response to the first viewing angle signal and the second viewing angle signal, and a viewing angle of the second light emitting circuit is narrower than a viewing angle of the first light emitting circuit.