Display Panel Region Segmentation for Flicker-Free Scanning
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Solution Overview
Problem
Conventional display devices using ultrahigh voltage mercury lamps cause environmental pollution and suffer from flickering issues due to low scanning signal frequency, which reduces user comfort and visual perception.
Innovation Solution
A display device with a display panel divided into multiple regions, each with a scan driving unit and data driving unit, which receive control signals to output scanning and data signals in sequence, allowing simultaneous scanning of regions to maintain image display without flickering, regardless of scanning signal frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the scanning signal frequency is increased to prevent flickering, then the visual comfort is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The display panel is divided into multiple display regions, each scanned independently by scan driving units. This segmentation allows each region to be refreshed at appropriate intervals without requiring the entire display to operate at high frequency, thus preventing flickering while maintaining manageable device complexity.
Solution Approach 2:
The patent implements periodic scanning of display regions in a sequential manner. Each display region is scanned at regular intervals, creating a periodic refresh pattern that prevents flickering perception while allowing the overall system to operate at lower effective frequencies, reducing complexity and energy consumption.
2Illumination intensity
If the scanning signal frequency is increased to prevent flickering, then the visual comfort is improved, but the energy consumption increases
Solution Approach 1:
By dividing the display into multiple regions scanned sequentially, the system avoids the need to refresh the entire display at high frequency simultaneously. Each region receives adequate refresh attention while the overall energy consumption is distributed and reduced compared to uniform high-frequency scanning.
Solution Approach 2:
The periodic scanning approach ensures that each display region is refreshed at intervals sufficient to prevent flickering perception, while the sequential nature of the scanning allows the system to enter lower-power states between regions, reducing total energy consumption compared to continuous high-frequency operation.
3Device complexity
If the display panel is scanned sequentially row by row, then the device complexity is kept simple, but the scanning frequency must be high to prevent flickering
Solution Approach 1:
The display panel is segmented into multiple display regions that can be scanned in parallel or sequential batches. This segmentation allows the scanning operation to be distributed across multiple scan driving units, maintaining simple per-unit complexity while achieving effective high-frequency refresh through coordinated operation of multiple units.
Solution Approach 2:
The patent implements periodic scanning patterns where display regions are refreshed in cycles. This periodic approach allows the system to maintain lower instantaneous scanning frequencies for individual regions while achieving effective high-frequency refresh across the entire display through the coordinated periodic action of multiple scan driving units.
Data Source
AI summary
The present disclosure illustrates a display device. The displaying device comprises a display panel, at least one scan driving unit and a data driving unit. The display panel is divided into display regions respectively having pixel sets. At least one scan driving unit having scanning lines couples to the pixel sets. The at least one scan driving unit outputs scanning signals to corresponding display regions upon receiving a first control signal. The data driving unit outputs data signals to the corresponding display regions upon receiving a second control signal. In response to respectively receiving the first or second control signals, the scan driving unit outputs the scanning signals or the data driving unit outputs the data signals to the corresponding display regions, so as to simultaneously scan the display regions respectively having the pixel sets in sequence with corresponding scanning patterns.