OLED Display Panel Pixel Control for Power Reduction
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Solution Overview
Problem
The high power consumption of OLED display screens is a significant challenge that existing technologies have not adequately addressed, despite their advantages in self-luminosity, contrast, and flexibility.
Innovation Solution
An OLED display panel controlling method that acquires touch or fingerprint signals to determine a target area and controls specific pixels to be non-active, reducing power consumption while maintaining normal display functionality in other areas, and a fingerprint identification assembly that uses a sensing device to acquire fingerprint information through a transparent pixel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If all pixels remain active during touch operation, then display quality is maintained, but power consumption increases
Solution Approach 1:
The display panel is segmented into multiple independent pixel regions, allowing selective activation. When a touch event occurs, only the pixel region corresponding to the touch location remains active, while other regions are deactivated. This segmentation enables the system to maintain display quality at the touch point while reducing overall power consumption by deactivating unnecessary pixel regions.
Solution Approach 2:
The patent implements local quality by maintaining high display quality only in the specific region where touch input occurs, while other regions can be in a lower power state. The pixel region corresponding to the touch point preserves full display functionality and quality, whereas deactivated regions consume minimal power, creating a local quality optimization that balances performance and energy efficiency.
2Use of energy by moving object
If pixels are deactivated to reduce power consumption, then energy efficiency improves, but touch sensitivity may deteriorate
Solution Approach 1:
The system performs preliminary action by pre-configuring the display into multiple independently controllable pixel regions. Before a touch event occurs, the system is ready to quickly activate or deactivate specific regions based on touch detection. This preliminary structuring enables rapid response to touch events, ensuring that the appropriate pixel regions are activated in time to maintain touch sensitivity while keeping other regions deactivated for power savings.
3Productivity
If the entire display area remains active, then user interface responsiveness is maintained, but energy waste occurs in non-interaction areas
Solution Approach 1:
The patent applies partial action by activating only the necessary portion of the display (the pixel region corresponding to the touch point) rather than the entire display area. This partial activation eliminates energy waste in non-interaction areas while maintaining full interface responsiveness at the interaction point. The system performs exactly the amount of work needed - keeping alive only the pixels required for current user interaction.
Data Source
AI summary
An OLED display panel and a controlling method thereof are provided. A touch control signal obtained by a touch control assembly is acquired. The touch control signal indicates a contact between an operation body and the OLED display panel. A target touch control area is determined based on the touch control signal. At least one pixel, which is included in a display assembly and corresponding to the target touch control area, is controlled to be in a non-active state.