OLED Display Panel Data Sharing for Low-Power Image Quality
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Solution Overview
Problem
The challenge in display technology is to further reduce power consumption in OLED display panels while maintaining effective display quality, as existing solutions do not adequately address the need for low power consumption without compromising display performance.
Innovation Solution
The implementation of a display panel design where sub-pixels of the same color in multiple pixel units share a data signal, reducing the number of data signals outputted by the driving chip, and incorporating a control unit to manage this sharing in various display modes, such as low power consumption or low refresh rate modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If each sub-pixel in each pixel unit is provided with an independent data signal, then the display quality and image completeness are maintained, but the power consumption increases due to the large number of data signals required
Solution Approach 1:
The patent merges the data signal provision function by making sub-pixels of the same color in different pixel units share a common data signal line. Specifically, sub-pixels of the same color (e.g., all red sub-pixels) are connected to the same data signal line, reducing the total number of data signal lines from the number of pixel units to the number of color channels (3 for RGB). This significantly reduces power consumption while maintaining display quality through the control unit's intervention to prevent observable gaps.
Solution Approach 2:
The patent introduces a control unit as an intermediary component that monitors and manages the shared data signal lines. The control unit detects the display mode and determines whether pixel units are adjacent to each other, thereby controlling whether sub-pixels share data signals or use independent signals. This intermediary ensures that data sharing does not compromise display quality by preventing observable gaps in the image.
2Use of energy by moving object
If sub-pixels of the same color in multiple pixel units share a data signal, then the power consumption is reduced, but the complexity of the control system increases
Solution Approach 1:
The control unit is designed with multi-functionality to justify its added complexity. It performs multiple functions: detecting display modes (first display mode vs. second display mode), determining spatial relationships between pixel units (whether they are adjacent), and dynamically controlling data signal allocation (shared vs. independent). This universal control mechanism manages the complexity while enabling power-saving operations across different display scenarios.
Solution Approach 2:
The patent implements dynamic control where the data signal sharing configuration is not fixed but changes based on display conditions. The control unit dynamically adjusts whether sub-pixels share data signals by detecting the current display mode and the spatial arrangement of pixel units. In the first display mode where pixel units are non-adjacent, sharing is enabled for power saving; in the second display mode where pixel units are adjacent, independent signals are used to maintain image quality.
3Use of energy by moving object
If the number of data signals is reduced through sharing, then the power consumption decreases, but the risk of observable gaps in the image increases
Solution Approach 1:
The control unit applies preliminary anti-action by proactively detecting the display mode and spatial relationship of pixel units before data signal sharing is implemented. It prevents observable gaps by controlling the sharing configuration in advance - only allowing data sharing when pixel units are non-adjacent (first display mode), and switching to independent signals when pixel units are adjacent (second display mode). This preliminary detection and control prevents the harmful effect of observable gaps before they can occur.
Data Source
AI summary
A display panel, a display control method and a display device are provided. The display panel includes a display region and a non-display region, and a plurality of pixel units distributed in the display region in an array. Each pixel unit of the plurality of pixel units includes sub-pixels of at least three colors. The display panel also includes a control unit disposed in the non-display region and configured, in a first display mode, to control the sub-pixels of a same color of at least two pixel units of the plurality of pixel units to share a data signal.