Array Substrate Signal Line Leads for Electrostatic Charge Dispersal
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Solution Overview
Problem
The non-display areas of array substrates in display devices accumulate static charge, which can be transferred to the display area, causing electrostatic shock and damage to electronic devices.
Innovation Solution
The array substrate design includes signal line leads with a first block that disperses electrostatic charge, connected to the lead body, and optionally a second block in a different layer, along with electrostatic discharge lines and protection circuits to manage static charge, reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal line leads are arranged in the non-display area to connect to signal lines in the display area, then electrical connection is achieved, but static charge accumulates and can be transferred to the display area causing electrostatic shock
Solution Approach 1:
An electrostatic protection circuit is introduced as an intermediary component between the signal line lead and the signal line. This protection circuit acts as a mediator that allows normal electrical connection while blocking or dissipating electrostatic charge, thus preventing electrostatic shock from reaching the display area.
Solution Approach 2:
The electrostatic protection circuit converts the harmful electrostatic charge into a beneficial protective mechanism. By detecting and safely dissipating static charge through controlled discharge paths, the circuit transforms a potential damage source into a protective feature that enhances overall system reliability.
2Reliability
If electrostatic protection circuits are added to manage static charge, then electrostatic shock damage is reduced, but device complexity increases
Solution Approach 1:
Instead of implementing comprehensive protection throughout the entire device, the electrostatic protection circuits are strategically placed only in the non-display area where signal line leads enter. This localized approach provides necessary protection while minimizing the addition of complex components to the overall device structure.
Solution Approach 2:
The electrostatic protection circuit performs multiple functions: it provides electrostatic discharge protection, maintains electrical connection integrity, and allows normal signal transmission. By combining these functions into a single integrated component, the circuit reduces overall device complexity while achieving comprehensive protection.
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 design effectively disperses electrostatic charge and reduces the probability of damage from electrostatic shock by integrating charge management features into the signal line leads and electrostatic discharge lines, enhancing the reliability of display devices.
Implementation Method 1
Each of the signal line leads comprises a lead body and a first block connected to the lead body... The first block... has an area greater than or equal to an area of a square with a side length that is 5 times a width of the signal line... effectively disperses electrostatic charge
Data Source
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AI summary
An array substrate includes a display area, a non-display area other than the display area, a plurality of signal lines located in the display area, and a plurality of signal line leads located in the non-display area and connected to respective ones of the plurality of signal lines. Each of the signal line leads includes a lead body and a first block connected to the lead body, and the first block has an area greater than or equal to an area of a square with a side length that is 5 times a width of the signal line.