Dielectric Constant Control Layer for Display Input Sensor Sensitivity
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Solution Overview
Problem
Current display devices face limitations in sensing sensitivity for input sensors, which affect their ability to accurately detect external inputs such as touch events.
Innovation Solution
Incorporating a dielectric constant control layer with a high dielectric constant material, such as metallic oxides or conductive fillers, in the upper layer structure of the display device to enhance the sensing sensitivity of the input sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional upper layer structure is used without dielectric constant control, then the device complexity is low, but the sensing sensitivity of the input sensor is insufficient
Solution Approach 1:
The patent changes the dielectric constant parameter of the upper layer structure by incorporating materials with different dielectric constants (first dielectric constant control layer with lower dielectric constant, second dielectric constant control layer with higher dielectric constant) to optimize sensing sensitivity without fundamentally redesigning the sensor structure
Solution Approach 2:
The patent applies different dielectric constant control layers at different locations above the sensing electrodes - a first layer with lower dielectric constant and a second layer with higher dielectric constant - to create localized optimization of the electric field distribution, thereby improving sensing sensitivity in specific regions
2Measurement precision
If the distance between sensing parts or their area is increased to improve sensing sensitivity, then the sensing sensitivity improves, but the device thickness or area increases
Solution Approach 1:
The patent changes the dielectric constant parameter of the upper layer structure to enhance sensing sensitivity without needing to increase the distance between sensing parts or their area, thus avoiding increased device thickness
3Measurement precision
If the distance between sensing parts or their area is increased to improve sensing sensitivity, then the sensing sensitivity improves, but the device area increases
Solution Approach 1:
The patent optimizes the dielectric constant parameter of the upper layer structure to improve sensing sensitivity while maintaining the same sensing electrode area, thereby avoiding an increase in device area
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 dielectric constant control layer increases the average dielectric constant of the upper module, leading to improved sensing sensitivity for external inputs without altering the distance between sensing parts or their area, thereby enhancing the detection capabilities of the input sensor.
Implementation Method 1
an upper layer structure including a dielectric constant control layer which controls a sensing sensitivity of the input sensor
Data Source
AI summary
A display device includes a display panel, an input sensor disposed on the display panel, and an upper layer structure disposed on the input sensor. The upper layer structure includes a dielectric constant control layer which controls a sensing sensitivity of the input sensor.