OLED Power Control via Current Draw Monitoring
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Solution Overview
Problem
Organic Light Emitting Diode (OLED) display devices consume excessive power, particularly when displaying all-white content, due to the linear relationship between power consumption and the number of active pixels and their intensity, leading to increased energy usage.
Innovation Solution
Implementing a power control method that monitors current draw and throttles system power consumption by calibrating a threshold value, entering a power-save mode, and sub-sampling OLEDs when the current draw exceeds the threshold, thereby reducing power consumption without significantly affecting display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If OLED display devices operate at maximum intensity level to display all-white content, then display brightness and quality are improved, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic power management by continuously monitoring current draw from the OLED display and adjusting power consumption in real-time. The system transitions between different power states (active, sleep, off) based on detected current levels, making the power consumption dynamic rather than static. This resolves the contradiction by allowing maximum brightness only when necessary while reducing power consumption during lower-demand periods.
Solution Approach 2:
The patent changes the operational parameters of the OLED display by adjusting current draw thresholds and power consumption levels based on monitored conditions. The system establishes threshold values for current draw and modifies power consumption parameters accordingly, enabling the display to operate at different intensity levels. This allows the system to maintain adequate display quality while optimizing power consumption by adjusting parameters rather than operating at fixed maximum settings.
2Use of energy by moving object
If the system continuously monitors current draw and implements power-saving modes, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors current draw from the OLED display and uses this information to adjust power consumption. The monitoring component provides feedback about actual power usage, and the control system responds by adjusting power delivery based on predefined thresholds. This feedback loop enables automatic power optimization without requiring complex user intervention or sophisticated algorithms, resolving the contradiction through a relatively simple yet effective feedback-based control system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The power control method effectively reduces power consumption in OLED display devices by implementing power-saving modes and sub-sampling OLEDs, thereby optimizing energy usage without compromising display performance.
Implementation Method 1
Organic Light Emitting Diode (OLED) display device
Data Source
AI summary
Embodiments of systems and methods for power control in an Organic Light Emitting Diode (OLED) display device are described. In an embodiment, a method includes monitoring a level of current draw from an Organic Light Emitting Diode (OLED) display device. The method may also include comparing the level of current draw to a threshold value. Additionally, a method may include throttling system power consumption in response to the level of current draw exceeding the threshold value.