Touch-Sensitive Panel Inducing Capacitor Design
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Solution Overview
Problem
Conventional touch-sensitive panels are thick due to the superposition of a touch pad or integration of touch-sensing circuitry, making them unsuitable for compact designs.
Innovation Solution
A touch-sensitive panel is designed with an induction line array layer, a dielectric layer, and a light-emitting diode (LED) display panel, where the induction line and scanning line intersect to form an inducing capacitor, generating touch-sensing signals, and a calculating circuit determines the touch position, integrated with TFT switches and storage capacitors for efficient signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a touch pad or touch-sensing circuitry is superimposed on or integrated with the display panel, then the touch-sensing function is achieved, but the thickness of the display panel increases
Solution Approach 1:
The patent merges the touch-sensing circuitry directly into the display panel by using the scanning lines of the display panel as induction lines to form inducing capacitors. This integration eliminates the need for separate touch pad layers, achieving touch-sensing functionality while maintaining a thin panel structure. The scanning lines serve dual purposes: driving display devices and sensing touch inputs through capacitor formation with the induction lines.
2Reliability
If the induction line and scanning line intersect to form an inducing capacitor, then touch-sensing signal is generated, but the device complexity increases
Solution Approach 1:
The scanning lines in the display panel are given multi-functionality by serving as one electrode of the inducing capacitors for touch sensing. This universal use of existing scanning lines eliminates the need for separate dedicated sensing circuitry, reducing overall device complexity while enabling touch-sensing signal generation through the intersection with induction lines.
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 configuration allows for a thinner display panel with touch-sensing functionality while maintaining accurate touch sensing, addressing the thickness issue of conventional designs.
Implementation Method 1
the induction line, the dielectric layer, and the scanning line form an inducing capacitor, which is utilized to generate a touch-sensing signal when the touch-sensitive panel is acted upon by an applied force of a touch object
Data Source
AI summary
A touch-sensitive panel, touch-sensing method, and method for manufacturing the same are provided. The touch-sensitive panel includes a substrate, an induction line array layer, a dielectric layer, and an LED display panel. The induction line and the scanning line of the LED display panel intersect, and the induction line, the dielectric layer, and the scanning line form an inducing capacitor, which is utilized to generate a touch-sensing signal when the touch-sensitive panel is acted upon by an applied force. The present invention enables the display panel with the touch-sensing function to be thinner.