Wearable Display Scan Drivers Adjust Pulse Widths
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Solution Overview
Problem
Wearable display devices face challenges in maintaining high display quality, particularly when switched between modes such as Virtual Reality (VR) and normal modes, due to differences in image display areas and pulse widths of scan signals, leading to potential boundary line issues and reduced image quality.
Innovation Solution
A display device configuration with multiple pixel areas and scan drivers that adjust pulse widths of scan signals based on mode, ensuring consistent image display across areas by synchronizing data signals and controlling emission control signals to minimize boundary visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the display device uses a single pulse width for all pixel areas, then the device complexity is reduced, but the display quality deteriorates due to boundary line visibility between different pixel areas
Solution Approach 1:
The patent applies local quality by configuring different pulse widths for scan signals in different pixel areas. Specifically, a first pulse width is used for a first pixel area and a second pulse width is used for a second pixel area, where the first and second pulse widths are different. This allows each pixel area to have optimized scan signal characteristics tailored to its specific display requirements, thereby improving overall display quality and reducing boundary line visibility between areas.
Solution Approach 2:
The patent segments the display device into multiple pixel areas (first pixel area and second pixel area) with independently configurable scan signal parameters. By dividing the display into separate regions that can be scanned with different pulse widths, the system achieves better display quality without requiring a completely unified approach, thus resolving the contradiction between complexity and quality.
2Adaptability or versatility
If the display device switches between different modes (VR and normal modes), then the adaptability is improved, but the display quality deteriorates due to boundary line issues during mode transitions
Solution Approach 1:
The patent implements dynamic adaptation by enabling the display device to switch between different operating modes (VR mode and normal mode) with different scan signal configurations. In VR mode, the device can utilize the first pixel area with one pulse width configuration, while in normal mode it can use the second pixel area with a different pulse width configuration. This dynamic reconfiguration allows the device to adapt to different usage scenarios while maintaining image coherence through proper synchronization of data signals and emission control signals during mode transitions.
Solution Approach 2:
The display device achieves multi-functionality by being capable of operating in multiple modes (VR and normal modes) with different pixel areas and pulse width configurations. The same display device can serve different purposes and provide optimized performance for each mode, enhancing adaptability while maintaining image quality through the invention's synchronization mechanisms.
3Manufacturing precision
If different pulse widths are used for different pixel areas, then the display quality is improved, but the device complexity increases due to multiple scan drivers and signal synchronization requirements
Solution Approach 1:
The patent applies local quality by configuring different pulse widths for scan signals in different pixel areas. Specifically, a first pulse width is used for a first pixel area and a second pulse width is used for a second pixel area, where the first and second pulse widths are different. This allows each pixel area to have optimized scan signal characteristics tailored to its specific display requirements, thereby improving overall display quality and reducing boundary line visibility between areas.
4Manufacturing precision
If the horizontal periods are adjusted for different pixel areas, then the display quality is improved by reducing boundary lines, but the productivity decreases due to varying scan signal timing
Solution Approach 1:
The patent applies local quality by configuring different pulse widths for scan signals in different pixel areas. Specifically, a first pulse width is used for a first pixel area and a second pulse width is used for a second pixel area, where the first and second pulse widths are different. This allows each pixel area to have optimized scan signal characteristics tailored to its specific display requirements, thereby improving overall display quality and reducing boundary line visibility between areas.
Data Source
AI summary
A display device includes: first pixels at a first pixel area and connected to first scan lines; a first scan driver to supply first scan signals to the first scan lines; second pixels at a second pixel area and connected to second scan lines; a second scan driver to supply second scan signals to the second scan lines; third pixels at a third pixel area and connected to third scan lines; and a third scan driver to supply third scan signals to the third scan lines. In a first mode, each of the first scan signals has at least a portion having a first pulse width, and each of the second scan signals has at least a portion having a second pulse width different from the first pulse width.