Array Substrate Integrating Inductive and Capacitive Sensor Units
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Solution Overview
Problem
Existing touch display devices have a significant thickness due to the separation of touch screens and display devices, limiting their versatility and practicality in various applications.
Innovation Solution
An array substrate integrating sensor units with inductors, capacitors, and switch transistors allows for both capacitive and inductive touch control modes, reducing device thickness and enabling mode switching based on application needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch screens are made independent from display devices, then touch control functionality is improved, but device thickness increases
Solution Approach 1:
The patent combines the touch sensor units with the display device array substrate, integrating both functions into a single structure. The sensor units are formed on the same substrate as the display pixels, eliminating the need for separate touch screen layers and reducing overall device thickness while maintaining both display and touch control capabilities.
Solution Approach 2:
The array substrate is designed to perform multiple functions simultaneously - it serves as both the display device substrate and the touch sensor substrate. The sensor units integrated on the array substrate enable the display device to function as both a visual output device and a touch input device, achieving multi-functionality in a single component.
2Adaptability or versatility
If sensor units integrate both capacitive and inductive components, then touch control versatility is improved, but device complexity increases
Solution Approach 1:
Each sensor unit integrates both capacitive elements (capacitor with first and second polar plates) and inductive elements (inductor with multiple terminals) within the same structure. This merging of capacitive and inductive components into unified sensor units enables both capacitive and inductive touch control modes to operate through the same physical structure, achieving versatility without proportionally increasing complexity.
Solution Approach 2:
The sensor units are designed with universal functionality to support both capacitive and inductive touch control modes. The same sensor unit structure with its capacitor and inductor components can detect both capacitive touches (through the capacitor) and inductive touches (through the inductor), allowing the system to adapt to different touch control requirements without requiring separate sensor structures for each mode.
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 sensor units on the array substrate reduces device thickness and provides flexibility in touch control modes, making the display device suitable for diverse applications while enhancing detection accuracy and usability.
Implementation Method 1
the ith sensor unit includes an inductor, a capacitor and a first switch transistor, a first terminal of the inductor and a first polar plate of the capacitor are both connected with the ith signal detection terminal
Implementation Method 2
a second terminal of the inductor is connected with a first terminal of the first switch transistor... during the inductive touch control stage, the first switch transistor is turned on under the control of the first control signal terminal, and the ith signal detection terminal outputs an inductive detection signal
Data Source
AI summary
Array substrate, display panel and display device are provided. The array substrate includes: N sensor units; N signal detection terminals; a first control signal terminal; and a reference signal terminal, wherein ith sensor unit comprises inductor, capacitor and first switch transistor, first terminal of inductor and first polar plate of capacitor are connected with ith signal detection terminal, second terminal of inductor is connected with first terminal of first switch transistor, second polar plate of capacitor and second terminal of first switch transistor are connected with reference signal terminal, control terminal of first switch transistor is connected with first control signal terminal, during capacitive touch control stage, first switch transistor is turned off, and ith signal detection terminal outputs a capacitive detection signal; during inductive touch control stage, first switch transistor is turned on, and ith signal detection terminal outputs inductive detection signal. Thickness of the display device is reduced.