Touch Panel Electrode Switching for Folding State Detection
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Solution Overview
Problem
Folding sensors in display devices occupy valuable space and have limited detection sensitivity due to their size, especially when the devices are folded, as they are typically placed in non-display areas with restricted space.
Innovation Solution
Incorporating a touch panel with a plurality of touch electrodes, including first and second electrodes, and switching circuits that allow for capacitance changes between ends to determine the folding state without an additional folding sensor, by connecting and disconnecting electrodes under user control to vary charge amounts and detect the folding state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a folding sensor is additionally disposed in a display panel to detect folding state, then the folding state detection function is achieved, but the device occupies valuable space and has limited detection sensitivity due to size constraints
Solution Approach 1:
The patent merges the folding detection function with the existing touch panel structure by using touch electrodes as sensing elements. The touch electrodes are integrated into the display panel layers, eliminating the need for separate folding sensors. The switching circuits control the connection states of these electrodes to detect folding through capacitance changes, achieving space efficiency while maintaining detection reliability.
Solution Approach 2:
The touch electrodes in the display panel serve dual functions: touch interaction and folding state detection. By configuring switching circuits to connect these electrodes in specific patterns during folding detection mode, the existing structural elements are utilized for multiple purposes, eliminating dedicated folding sensor components and their associated space requirements.
2Reliability
If a folding sensor is additionally disposed in a display panel to detect folding state, then the folding state detection function is achieved, but the detection sensitivity is limited due to size constraints in non-display areas
Solution Approach 1:
The patent merges the folding detection function with the existing touch panel structure by using touch electrodes as sensing elements. The touch electrodes are integrated into the display panel layers, eliminating the need for separate folding sensors. The switching circuits control the connection states of these electrodes to detect folding through capacitance changes, achieving space efficiency while maintaining detection reliability.
Solution Approach 2:
The patent changes the electrical parameters (connection states, capacitance values) of the touch electrodes through switching circuits to enhance detection sensitivity. By dynamically adjusting which electrodes are connected and how they are configured, the system optimizes the capacitance change signals for folding detection, overcoming the size limitations that would otherwise restrict measurement precision.
3Reliability
If additional folding sensor components are added to the display device, then folding state detection is enabled, but the device complexity increases and space efficiency decreases
Solution Approach 1:
The patent merges the folding detection function with the existing touch panel structure by using touch electrodes as sensing elements. The touch electrodes are integrated into the display panel layers, eliminating the need for separate folding sensors. The switching circuits control the connection states of these electrodes to detect folding through capacitance changes, achieving space efficiency while maintaining detection reliability.
Solution Approach 2:
The touch electrodes in the display panel serve dual functions: touch interaction and folding state detection. By configuring switching circuits to connect these electrodes in specific patterns during folding detection mode, the existing structural elements are utilized for multiple purposes, eliminating dedicated folding sensor components and their associated space requirements.
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 enables sensitive detection of the folding state without additional space requirements, enhancing sensitivity and reducing the need for a separate folding sensor, allowing for more efficient use of display device space.
Implementation Method 1
a first switching circuit configured to make the at least one of the plurality of second electrodes be connected to a second end at the first stage
Implementation Method 2
determine a folding state of the touch panel according to at least one of an amount of charge at the second end or an amount of charge at the first end
Data Source
AI summary
The present disclosure provides a touch panel and a control method thereof, and a display device. The touch panel includes: a plurality of touch electrodes, including a plurality of first electrodes not crossing with each other and including one or more first sub-electrodes located in a foldable area of the touch panel and a plurality of second electrodes not crossing with each other, wherein at least one of the plurality of second electrodes is disposed to be insulated from and crossing with at least one of the one or more first sub-electrodes, and at least one of the at least one of the one or more first sub-electrodes is configured to be connected to a first end at a first stage; and a first switching circuit configured to make the at least one of the plurality of second electrodes be connected to a second end at the first stage.