Selective Display Region Activation for Power Reduction
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Solution Overview
Problem
Current display technologies face challenges in reducing power consumption, especially in flexible and rollable displays, as they often require constant illumination of the entire panel, leading to higher energy usage.
Innovation Solution
A display device with position selectors and sensing lines that allow only a desired region of the panel to be activated, using conductive materials and capacitance detection to determine and control the activated area, enabling selective display and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the entire display panel is illuminated continuously, then the display can show content across the full panel area, but power consumption increases
Solution Approach 1:
The display panel is segmented into multiple selectable regions through the sensing line grid (first sensing lines extending in first direction, second sensing lines extending in second direction). Position selectors enable independent activation of specific segments, allowing only the required display area to be illuminated at any given time, thus reducing overall power consumption while maintaining full panel availability when needed
Solution Approach 2:
The display system transitions from a static full-panel illumination mode to a dynamic selective region activation mode. The position selectors and sensing lines enable real-time adjustment of the activated region boundaries (Xa, Ya, Xb, Yb coordinates), allowing the display to adapt its active area to match the actual content requirements, thereby optimizing power consumption based on usage patterns
2Use of energy by moving object
If position selectors and sensing lines are added to enable selective region activation, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical positioning systems with a capacitive sensing field-based system. Instead of using mechanical switches or physical position indicators, the invention uses conductive sensing lines that detect the position of selectors through capacitance variations. This substitution reduces mechanical complexity while enabling precise region selection and activation control
Solution Approach 2:
The sensing line grid serves multiple functions simultaneously: it acts as both the detection mechanism for position selector location and the control mechanism for defining activated region boundaries. The same capacitive sensing infrastructure is used to identify both X and Y coordinates, eliminating the need for separate detection and control systems, thus reducing overall device complexity
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 solution allows for low power consumption by only illuminating the necessary regions of the display, enhancing energy efficiency and flexibility in display technology.
Implementation Method 1
The plurality of first sensing lines and the plurality of second sensing lines may be configured to detect variations in capacitance
Data Source
AI summary
A display device includes a display panel including a plurality of first sensing lines that extend in a first direction, and a plurality of second sensing lines that extend in a second direction, a first position selector and a second position selector at an edge of the display panel, and spaced apart from each other in the first direction, and a third position selector and a fourth position selector at or above the display panel, and spaced apart from each other in the second direction, wherein an activated region of the display panel corresponds to respective positions of the first position selector, the second position selector, the third position selector, and the fourth position selector