Array Substrate Conductive Particle Switching for Image Sticking
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Solution Overview
Problem
Parasitic capacitance between the gate and the source/drain of thin-film transistor (TFT) devices in display panels leads to image sticking and poor display quality.
Innovation Solution
An array substrate with a conductive unit comprising an accommodating member and multiple conductive particles, which are movable under a control electric-field, allowing for conduction or disconnection between the data line and the pixel electrode, thereby replacing the conventional TFT device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TFT devices are used for signal transmission in display panels, then the display function is achieved, but parasitic capacitance occurs between the gate and source/drain causing image sticking and poor display quality
Solution Approach 1:
The patent extracts and removes the harmful parasitic capacitance effect by replacing the conventional TFT gate structure with a conductive unit comprising movable conductive particles. These particles can be positioned to establish electrical connection only when needed, eliminating the continuous parasitic capacitance between gate and source/drain regions that causes image sticking.
Solution Approach 2:
The patent introduces dynamic control by using movable conductive particles that can change their position and electrical connection state. The conductive particles are movable between a first position (connected to source/drain) and a second position (disconnected), allowing the system to dynamically adjust its electrical state rather than maintaining a fixed TFT structure.
2Ease of operation
If conventional TFT structures are used, then signal transmission is achieved, but image sticking occurs due to parasitic capacitance
Solution Approach 1:
The patent introduces conductive particles as intermediary elements between the source/drain regions and the gate. These particles serve as a mediator that can establish or break electrical connections as needed, replacing the direct fixed connection in conventional TFTs and eliminating the parasitic capacitance that causes image sticking.
3Productivity
If TFT devices are employed for display signal transmission, then the basic display function is realized, but display quality deteriorates due to parasitic capacitance effects
Solution Approach 1:
The patent replaces the mechanical/electrical fixed structure of TFT devices with a controllable particle-based system. Instead of relying on fixed semiconductor structures, the invention uses conductive particles that can be moved and positioned to establish electrical connections, substituting the conventional TFT mechanism with a new approach that eliminates parasitic capacitance while maintaining signal transmission functionality.
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 solution effectively reduces parasitic capacitance, preventing image sticking and ensuring excellent display quality by controlling the conduction and disconnection of electrical connections between the data line and the pixel electrode.
Implementation Method 1
The multiple conductive particles are moveable under the control of a control electric-field
Data Source
AI summary
An array substrate, a display panel, and a display device are provided. The array substrate includes a pixel electrode, a data line, and a conductive unit. The data line is spaced apart from the pixel electrode. The conductive unit includes an accommodating member and multiple conductive particles, where the accommodating member is located between the data line and the pixel electrode, and the accommodating member defines an accommodating cavity. The multiple conductive particles, part of the pixel electrode, and part of the data line are accommodated in the accommodating cavity. The multiple conductive particles are moveable under the control of a control electric-field. The conductive unit is operable in a first state or a second state.