Variable Resistance Element for Display Transformation State Detection
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Solution Overview
Problem
Existing display devices lack an effective method to determine their transformation states, such as bending or stretching, which affects user interaction and functionality.
Innovation Solution
A display device incorporating a variable resistance element with distinct current paths and a controller to differentiate between bending and stretching states by analyzing resistance changes through sensing signals from connected wiring lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a variable resistance element with multiple current paths is used to determine transformation state, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The variable resistance element is divided into multiple current paths (first current path and second current path) with different orientations. Each path independently measures resistance changes in specific directions, enabling precise determination of transformation states through comparative analysis of multiple measurement results.
Solution Approach 2:
The patent introduces multi-dimensional measurement by configuring current paths in different directions (first direction and second direction perpendicular to the first direction). This dimensional approach allows the system to distinguish between bending and stretching transformations by analyzing resistance changes along orthogonal axes.
2Measurement precision
If multiple pairs of wiring lines are connected to the variable resistance element, then sensing accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The wiring line configuration uses multiple pairs of lines (first driving/sensing, second driving/sensing, third driving/sensing, fourth driving/sensing) that serve universal functions: driving signals and sensing signals. Each pair can operate independently or in combination, providing manufacturing flexibility while maintaining measurement precision through standardized connection patterns.
3Productivity
If the controller supplies driving signals to multiple wiring lines simultaneously, then productivity is improved, but energy consumption increases
Solution Approach 1:
The controller supplies driving signals to different wiring lines in alternating periods rather than continuously. During each period, specific driving lines are activated while others remain inactive, enabling the system to gather comprehensive transformation state information through periodic measurements while significantly reducing overall energy consumption compared to continuous simultaneous activation.
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
Enables accurate determination of the display device's transformation state, enhancing user interaction by distinguishing between bending and stretching conditions, thereby improving the device's flexibility and usability.
Implementation Method 1
a variable resistance element positioned on the display panel... a first current path between the first driving wiring line and the first sensing wiring line in the variable resistance element is different from a second current path between the second driving wiring line and the second sensing wiring line in the variable resistance element
Data Source
AI summary
A display device includes a display panel, a variable resistance element positioned on the display panel, a first driving wiring line and a first sensing wiring line connected to the variable resistance element with the variable resistance element disposed between the first driving wiring line and the first sensing wiring line, and a second driving wiring line and a second sensing wiring line connected to the variable resistance element with the variable resistance element disposed between the second driving wiring line and the second sensing wiring line. A first current path between the first driving wiring line and the first sensing wiring line in the variable resistance element is different from a second current path between the second driving wiring line and the second sensing wiring line in the variable resistance element.