OLED Display Driver Circuit Selective Line Blocking
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Solution Overview
Problem
High power consumption in OLED display systems, particularly in the display driver integrated circuit and display panel, due to high-speed operation, necessitates a reduction in energy usage without compromising image quality.
Innovation Solution
A display device and method that includes a display panel, a display driver integrated circuit, and a driving control circuit, where the driving control circuit selectively connects driving lines based on a generated driving control signal, blocking unnecessary driving signals to specific areas of the display panel, thereby reducing power consumption by optimizing signal delivery only to areas that require updating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the display system is driven at high speed (120 Hz or higher), then image quality is improved without interruption, but power consumption increases significantly
Solution Approach 1:
The display panel is divided into multiple display areas (first display area and second display area), and the driving system is segmented into multiple driving lines (first driving lines and second driving lines). This allows independent control of different regions, enabling selective driving of only those areas that require updates, thereby reducing overall power consumption while maintaining high refresh rates in active regions.
Solution Approach 2:
Instead of driving the entire display panel at high speed, the invention applies partial action by selectively driving only the necessary display areas. The driving control circuit identifies which display areas require updates and applies high-speed driving only to those regions, while other areas are driven at lower speeds or not at all, thus reducing power consumption while maintaining image quality where needed.
2Area of stationary object
If driving signals are provided to all driving lines, then complete display coverage is maintained, but power consumption increases due to unnecessary updates
Solution Approach 1:
Different display areas are treated with different driving strategies based on their specific requirements. The first display area may receive driving signals at one rate while the second display area receives signals at a different rate or not at all. This local differentiation allows the system to maintain complete display coverage while avoiding energy waste in areas that do not require updates.
Solution Approach 2:
The system applies driving signals partially rather than uniformly across all display areas. By identifying which specific display areas require updates and providing driving signals only to those regions, the invention reduces energy loss while maintaining complete and accurate display coverage across the entire panel.
3Adaptability or versatility
If the display driver integrated circuit drives the entire display panel, then full display functionality is maintained, but power consumption in the driver circuit increases
Solution Approach 1:
The display driver integrated circuit is configured to segment its driving operations into multiple independent driving lines, each corresponding to different display areas. This segmentation allows the driver circuit to activate only the necessary driving lines based on update requirements, reducing power consumption in the driver circuit while maintaining full display functionality through selective activation.
Solution Approach 2:
The driving control circuit dynamically adjusts which driving lines are active based on real-time display update requirements. Instead of maintaining all driving lines in a static active state, the system dynamically enables or disables driving lines according to the specific needs of different display areas, thereby reducing power consumption in the driver circuit while preserving adaptability and full display functionality when needed.
Data Source
AI summary
A display device includes a display panel, a display driver integrated circuit and a driving control circuit. The display panel includes a plurality of pixels connected to a plurality of driving lines and a plurality of source lines. The display driver integrated circuit includes a driving control signal generator. The driving control signal generator generates a driving control signal based on display device information and pixel values corresponding to at least a portion of the plurality of rows among a plurality of previous pixel values of a previous frame and a plurality of present pixel values of a present frame. The driving control circuit selectively connects the display driver integrated circuit with each of the plurality of driving lines based on the driving control signal such that first driving signals provided to first driving lines among the plurality of driving lines are blocked.