Guide Panel Conductive Pattern for Touch Force Sensing
Solution Overview
Problem
Conventional display devices are limited in providing various touch input processing functions and satisfying user demands, as they primarily rely on sensing touch position without effectively incorporating touch force recognition, which restricts their functionality and compatibility with existing structures.
Innovation Solution
A display device configuration that includes a display panel with embedded first electrodes, a guide panel, and flexible printed circuits to sense touch force by utilizing conductive patterns and electrodes, allowing for compact implementation of touch force sensing without altering the conventional display device structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch force sensing function is added to conventional display device, then touch input processing capability is improved, but device structure becomes more complex
Solution Approach 1:
The patent combines the touch force sensing function with the existing display device structure by integrating a second electrode and guide panel into the conventional display architecture. The conductive patterns are formed on the guide panel which is already part of the display device, merging the new sensing capability with existing structural elements rather than adding completely separate components.
Solution Approach 2:
The guide panel serves multiple functions: it acts as both a structural component of the display device and a substrate for the conductive patterns that enable touch force sensing. The second electrode also serves dual purposes in the capacitance sensing mechanism, contributing to both the existing display functionality and the new touch force recognition capability.
2Ease of manufacture
If conventional display device structure is maintained, then manufacturing compatibility is improved, but touch force sensing function cannot be implemented
Solution Approach 1:
The patent applies local quality by adding conductive patterns only to specific regions of the guide panel where touch sensing is needed, rather than modifying the entire display device structure. The second electrode is positioned at specific locations to work with the conductive patterns, enabling touch force sensing only in the necessary areas while maintaining the overall conventional structure.
3Volume of moving object
If touch force sensing is implemented without structural modification, then device compactness is improved, but sensing precision may be compromised
Solution Approach 1:
The guide panel acts as an intermediary element between the display panel and the touch sensing mechanism. It provides a substrate for the conductive patterns and works in conjunction with the second electrode to enable capacitance-based touch force sensing without requiring direct structural modifications to the display panel itself, thus maintaining compactness while achieving sensing capability.
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 simultaneously sense touch position and force, providing enhanced touch input processing capabilities while maintaining a compact and structurally minimal design.
Implementation Method 1
A display device provides functions of recognizing a user's touch on a display panel and causing the display device to be operated based on the recognized touch
Data Source
AI summary
A display device, a backlight unit, a guide panel, and a flexible printed circuit, are disclosed which include a conductive pattern on a part of an outer surface of a guide panel or a folding portion formed by folding a side end portion of the flexible printed circuit. The conductive pattern or the folding portion is electrically connected to an electrode located below the display device. A simple structure is provided in which a signal output from a signal input medium positioned above the guide panel is easily transmitted to an electrode located below the display device through the conductive pattern of the guide panel or the folding portion of the flexible printed circuit.