Stretchable Display Resolution Control for Hidden-Pixel Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stretchable display devices consume excessive power due to driving signals being applied to hidden pixels even when the display is released.
Innovation Solution
A resolution controller for stretchable displays that includes a resolution-setting multiplexer module and a tensile sensor to selectively apply gate driving signals to open pixels based on the display's stretched or released state, reducing power consumption by avoiding unnecessary pixel activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If driving signals are applied to all pixels including hidden pixels in a stretchable display, then the display can show full resolution when stretched, but power consumption increases excessively when the display is released
Solution Approach 1:
The patent implements dynamic resolution adjustment by detecting the stretched state of the display and automatically switching between high resolution (when stretched) and low resolution (when released). The resolution controller changes the number of active pixel columns based on the mechanical state, making the display characteristics adaptive rather than fixed, thus resolving the contradiction between maintaining high resolution and reducing power consumption.
Solution Approach 2:
The patent changes the operational parameters of the display by adjusting the effective resolution based on the stretched state. When stretched, the display operates at full resolution with all pixels active; when released, it switches to a reduced resolution mode with fewer active columns. This parameter change allows the system to optimize power consumption while maintaining display quality when needed.
2Illumination intensity
If the stretchable display operates at full resolution always, then image quality is maintained, but energy is wasted driving hidden pixels that are not visible when released
Solution Approach 1:
The patent extracts or removes the unnecessary driving signals for hidden pixels when the display is in a released state. By identifying which pixel columns are actually visible based on the stretched state, the system eliminates the energy-consuming drive signals for hidden pixels, thereby reducing energy waste while maintaining brightness for visible pixels.
Solution Approach 2:
The patent applies partial action by driving only the necessary portion of pixels (visible columns) rather than all pixels. When the display is released, only a subset of pixel columns needs to be driven, and the system intentionally drives only that partial set, avoiding the excessive energy consumption of driving all pixels including hidden ones.
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 controller effectively manages power usage by ensuring driving signals are only applied to visible pixels, thereby reducing unnecessary power consumption and optimizing energy efficiency.
Implementation Method 1
the tensile sensor may sense tensile force applied to the stretchable display to sense a stretched degree or a released degree of the stretchable display
Data Source
AI summary
A resolution controller for a stretchable display includes a resolution-setting multiplexer module to receive a resolution selecting signal and to apply a gate in panel (GIP) selecting signal, in response to the resolution selecting signal, and a GIP module configured to generate a gate driving signal in response to the GIP selecting signal applied by the resolution-setting multiplexer module, and apply the gate driving signal to a pixel driving flexible printed circuit board (FPCB) of the stretchable display to drive an open pixel depending on a stretched state of the stretchable display.