Flexible Display Electrode Layout for Fold Area Resistance Sensing
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Solution Overview
Problem
Existing display devices struggle to sense areas of bending, folding, or rolling without requiring separate sensors, switches, or metal layers.
Innovation Solution
A display device with resistance sensing lines overlapping driving and sensing electrodes, utilizing first and second resistance sensing lines to detect changes in resistance rates, allowing the device to sense bending, folding, or rolling without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate sensors, switches, or metal layers are added to detect bending, folding, or rolling, then sensing capability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines the sensing function with the existing electrode structure by integrating resistance sensing lines into the same layer as the driving and sensing electrodes. This merging eliminates the need for separate sensors, switches, or metal layers, thereby improving sensing capability while avoiding increased device complexity
Solution Approach 2:
The electrode layer is given multiple functions: it serves both as driving/sensing electrodes for the display and as resistance sensing lines for detecting bending, folding, or rolling. This multi-functionality allows the structure to perform sensing without requiring additional dedicated components, resolving the contradiction between sensing capability and device complexity
2Measurement precision
If separate sensors, switches, or metal layers are added to detect bending, folding, or rolling, then sensing capability is improved, but manufacturing complexity increases
Solution Approach 1:
The sensing lines are merged into the existing electrode manufacturing process, using the same layer structure and materials. This integration means that sensing functionality is achieved without adding separate manufacturing steps for sensors, switches, or metal layers, thereby improving sensing capability while maintaining ease of manufacture
Solution Approach 2:
The electrode structure performs dual purposes: displaying and sensing. By making the electrode layer multi-functional, the patent eliminates the need for separate manufacturing processes for dedicated sensing components, thus improving sensing capability without increasing manufacturing 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
Enables the display device to accurately detect areas of deformation by comparing resistance changes, enhancing flexibility and functionality without the need for separate sensors or metal layers.
Implementation Method 1
a first resistance sensing line extending in the second direction and overlapping at least some of the driving electrodes, and a second resistance sensing line on the same layer as the first resistance sensing line, extending in the first direction, and overlapping at least some of the sensing electrodes
Data Source
AI summary
A display device includes: a first display area; a second display area on one side of the first display area; a display unit in the first and second display areas and including a light emitting element configured to emit light; a plurality of driving electrodes on the display unit and electrically connected in a first direction; a plurality of sensing electrodes on a same layer as the driving electrodes and extending in a second direction intersecting the first direction; a first resistance sensing line extending in the second direction and overlapping at least some of the driving electrodes; and a second resistance sensing line on a same layer as the first resistance sensing line, extending in the first direction, and overlapping at least some of the sensing electrodes.