Display Device Dummy Circuits Static Electricity Protection
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Solution Overview
Problem
Signal wires in flat panel display devices can act as pathways for static electricity, potentially damaging the lighting circuits within these devices.
Innovation Solution
Incorporating dummy circuits with dummy capacitors connected to signal wires to collect and dissipate external static electricity before it reaches the lighting circuits, thereby preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal wires are used to transmit lighting signals, then lighting circuits can be controlled, but static electricity may flow through the signal wires and damage the lighting circuits
Solution Approach 1:
The patent introduces dummy circuits as intermediary components between the signal wires and lighting circuits. These dummy circuits include dummy capacitors that are connected to the signal wires, serving as a mediator to intercept and dissipate static electricity before it can reach the lighting circuits, thus protecting them from damage while allowing normal signal transmission.
Solution Approach 2:
The dummy circuits are positioned and configured to act in advance before static electricity can damage the lighting circuits. By connecting the dummy capacitors to the signal wires upstream of the lighting circuits, the system performs preliminary protection by collecting and dissipating static electricity charges before they can cause harm to the downstream lighting circuit components.
2Reliability
If dummy circuits are added to collect static electricity, then lighting circuits are protected from damage, but device complexity increases
Solution Approach 1:
The protection function is segmented into separate dummy circuit modules that can be independently added to the existing display device. Each dummy circuit includes discrete dummy capacitors connected to specific signal wires, allowing the protection mechanism to be divided into multiple small, manageable units rather than requiring a complete system redesign, thus limiting the increase in overall device complexity.
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 implementation of dummy circuits effectively prevents or reduces damage to lighting circuits by dissipating static electricity, ensuring the reliable operation of display devices.
Implementation Method 1
The dummy circuits collect external static electricity coming through the signal wires before the external static electricity flows into the lighting circuits
Data Source
AI summary
A display device includes: a display panel having a display area with a plurality of pixel areas and a non-display area adjacent the display area, the display panel may include a substrate including at least one thin film transistor in each of the pixel areas and a display element connected to the thin film transistor; lighting circuits in the non-display area on the substrate to check lighting states of the display element; signal wires in the non-display area on the substrate to supply a signal to the lighting circuits; dummy circuits including a plurality of dummy capacitors, each of which include a first dummy capacitor electrode and a second dummy capacitor electrode, wherein the dummy circuits collect external static electricity coming through the signal wires before the external static electricity flows into the lighting circuits.