Integrated Force Touch Display with Variable Gap Substrates
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Solution Overview
Problem
Existing force touch-control structures are typically external to display devices, leading to complex fabrication processes and resulting in thick, heavy terminals that do not effectively integrate touch-control and display functions.
Innovation Solution
A touch-control display device with integrated first and second force touch-control components and self-capacitance type touch-control electrodes on oppositely disposed substrates, utilizing a variable gap and supporting columns to detect pressure forces and provide concurrent location and force detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If force touch-control structure is integrated within display device, then device thickness and weight are reduced, but fabrication complexity increases
Solution Approach 1:
The patent merges force touch-control components with display device substrates by integrating first force touch-control components on the first substrate and second force touch-control components on the second substrate. This consolidation eliminates the need for separate external force touch-control devices, reducing overall device thickness and weight while maintaining detection functionality through the integrated structure.
2Weight of stationary object
If force touch-control structure is integrated within display device, then device weight is reduced, but manufacturing process complexity increases
Solution Approach 1:
The patent segments the touch-control functionality into distinct components: first force touch-control components on the first substrate, second force touch-control components on the second substrate, and self-capacitance type touch-control electrodes. This segmentation allows each component to be optimized and manufactured separately using existing display manufacturing processes, then integrated together, reducing overall manufacturing complexity compared to a fully integrated single-structure approach.
3Ease of manufacture
If external force touch-control device is used, then fabrication process is simple, but device becomes thick and heavy
Solution Approach 1:
The patent implements a nested structure where force touch-control components are embedded within the display device's substrate layers. The first force touch-control components are nested on the first substrate, the second force touch-control components are nested on the second substrate, and self-capacitance electrodes are nested between them. This nesting approach eliminates the need for external add-on devices, reducing device thickness while maintaining fabrication simplicity through layered integration.
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 integration of force touch-control and self-capacitance touch-control components within the display device enables thin, lightweight, and highly reliable terminals with enhanced user interaction, offering accurate force detection and location sensing while simplifying the manufacturing process.
Implementation Method 1
Under external pressure forces, a force touch-control structure may generate different feedback information according to different magnitudes of pressure forces
Implementation Method 2
one or more self-capacitance type touch-control electrodes disposed on the inner side of the second substrate
Data Source
AI summary
A touch-control display device includes a driving module, a first substrate disposed with one or more first force touch-control components, and a second substrate disposed with one or more second force touch-control components and one or more self-capacitance type touch-control electrodes. The first substrate and the second substrate are oppositely disposed, with a variable gap between the first substrate and the second substrate. The second force touch-control component comprises a plurality of first electrodes arranged in a matrix, and the plurality of first electrodes are connected to the driving module respectively through their corresponding first conducting wires. The self-capacitance type touch-control electrode comprises a plurality of second electrodes arranged in a matrix, and the plurality of second electrodes are connected to the driving module respectively through their corresponding second conducting wires.