Dynamic Display Illumination Area Resizing for Power Savings
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Solution Overview
Problem
Display devices, such as smartphones, consume a significant portion of a device's power, often between 30%-60%, and can exceed 80% if left illuminated, necessitating a method to reduce energy consumption without lowering brightness.
Innovation Solution
The method involves dynamically resizing the illumination area of a display by disabling or reducing portions of light emitting diodes (LEDs) outside the active area, allowing for power savings without affecting brightness, using illumination control chips to manage LED groups and fractional charge pumps to control current and voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the brightness of the display is lowered to reduce power consumption, then energy consumption is reduced, but reading becomes difficult in bright environments
Solution Approach 1:
The display is divided into multiple independently controllable illumination zones. Different segments of the display can have different brightness levels or be turned off entirely, allowing power consumption to be reduced in less critical areas while maintaining full brightness in areas that require visibility.
Solution Approach 2:
Different regions of the display are assigned different illumination characteristics based on their functional importance and user interaction patterns. Critical display areas maintain high brightness for readability, while peripheral or less important areas use reduced brightness or remain dark to conserve power.
2Use of energy by moving object
If the illumination area of the display is reduced to save power, then energy consumption is reduced, but the display area available for content is reduced
Solution Approach 1:
The illumination area of the display is made dynamically adjustable rather than fixed. The display can transition between different illumination configurations based on user input, environmental conditions, and power availability, allowing optimization of both power consumption and display area utilization.
Solution Approach 2:
The display illumination is activated periodically or on-demand rather than continuously. The display can be turned off or dimmed during periods of inactivity and activated only when content needs to be displayed, reducing overall power consumption while maintaining full display area availability when needed.
3Illumination intensity
If the display is left illuminated frequently to maintain visibility, then readability is maintained, but power consumption increases
Solution Approach 1:
The display system automatically adjusts its illumination behavior based on detected usage patterns and environmental conditions. Sensors detect ambient light levels and user interaction to automatically determine when the display should be illuminated, eliminating the need for manual control and optimizing power consumption while maintaining visibility when needed.
Solution Approach 2:
The display system incorporates feedback mechanisms that monitor power consumption, usage patterns, and environmental conditions to dynamically adjust illumination behavior. This closed-loop control allows the system to learn from user behavior and optimize the balance between visibility and power consumption over time.
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
This approach significantly reduces power consumption by adjusting the display's illumination area, extending battery life without compromising visibility, especially in bright environments, by enabling dynamic resizing based on user input or energy thresholds.
Implementation Method 1
a set of light emitting devices configured to illuminate at least a portion of the display element
Data Source
AI summary
Embodiments disclosed herein provide systems, methods, and computer program product for managing power consumption of a display. An illumination area of the display may be adjusted to limit or increase a number of activated light emitting devices, and thus, adjust power consumption of the display. A device may receive an input to adjust the first illumination area to the second illumination area. In response, a device may, for example, disable a portion of the first illumination area not included in the second illumination area. In another example, a device may enable a portion of the second illumination area not included in the first illumination area. An amount of operation time and/or energy storage may be calculated, based at least in part on a resize of an illumination area of the display.