Display Panel Gating Circuits for Variable Split-Screen Scanning
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Solution Overview
Problem
Current display panels cannot drive different areas at different frequencies, limiting their ability to perform split-screen displays efficiently.
Innovation Solution
Incorporating a driving circuit with cascaded shift registers and gating circuits that allow for the generation of scanning signals with adjustable frequencies, controlled by a frequency cut signal, enabling different refresh frequencies in various display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display panels use uniform scanning frequencies across all areas, then the display system is simple to control, but power consumption cannot be optimized and split-screen functionality is limited
Solution Approach 1:
The display panel is divided into multiple scanning areas (first scanning area and second scanning area) that can be driven independently at different frequencies. The driving circuit is segmented into first and second scanning signal generation units, each capable of operating at different frequencies to match the needs of different display regions, enabling split-screen functionality while maintaining manageable circuit complexity through modular design
Solution Approach 2:
The patent implements dynamic frequency adjustment for different scanning areas. The first scanning signal can be generated at a first frequency while the second scanning signal is generated at a second frequency, allowing the system to adapt the scanning frequency dynamically based on the display mode and area requirements. This dynamic capability enables optimized power consumption and flexible split-screen display configurations
2Use of energy by moving object
If different areas are driven at different frequencies for split-screen display, then power consumption is reduced and display flexibility is improved, but the driving circuit becomes more complex
Solution Approach 1:
The driving circuit is divided into independent first and second scanning signal generation units, each responsible for a specific scanning area. This segmentation allows each unit to operate at its own optimized frequency, reducing overall power consumption by allowing lower-frequency operation in areas that do not require high refresh rates, while maintaining manageable complexity through modular architecture
Solution Approach 2:
The patent employs parameter changes by allowing the scanning frequency to vary between different areas. The first scanning signal operates at a first frequency while the second scanning signal operates at a second frequency, enabling the system to adjust the operating parameters (frequency) of different circuit units independently to optimize power consumption based on actual display needs
3Productivity
If a single scanning signal is used for the entire display panel, then the control system is simple, but the display panel cannot achieve real-time refresh in different areas simultaneously
Solution Approach 1:
The scanning signal generation is segmented into multiple independent units (first scanning signal generation unit and second scanning signal generation unit), each capable of generating scanning signals at different frequencies. This segmentation enables different scanning areas to be refreshed at different rates simultaneously, achieving high productivity in areas requiring real-time refresh while maintaining overall system manageability through modular design
Solution Approach 2:
The system implements dynamic scanning signal generation where the first scanning signal and second scanning signal can operate at different frequencies independently. This dynamic capability allows the display panel to achieve real-time refresh in areas that require it while using lower refresh rates in areas where content does not change frequently, thereby improving overall productivity without requiring a single high-frequency signal for the entire panel
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a driving circuit including a plurality of cascaded shift registers configured to generate a primary scanning signal; and a plurality of gating circuits corresponding to the plurality of shift registers, electrically connected to corresponding shift registers, and configured to generate a scanning signal. A first input terminal of a gating circuit of the plurality of gating circuits is connected to a frequency cut signal, the gating circuit is configured to control a frequency of the scanning signal in response to the frequency cut signal, and the frequency of the scanning signal is less than or equal to a frequency of the primary scanning signal.