GOA Circuit Capacitor for Display Panel ESD Protection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The dense wire arrangement around GOA circuits in display panels makes them susceptible to electrostatic discharge damage, leading to reduced antistatic ability and product yield, as existing solutions either fail to increase antistatic ability or compromise the manufacturing process.

Innovation Solution

A first and second conducting wire are placed outside the GOA circuit with an insulating layer in between, forming a capacitor to store and dissipate static electricity, thereby preventing damage to the GOA circuit and improving antistatic ability and product yield.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If GOA circuits are disposed on two sides of the display area with dense wire arrangement, then the gate driver integrated circuit is provided on the array substrate without external bonding, but the GOA circuit becomes susceptible to electrostatic discharge damage

Engineering Contradiction:

Improveintegration of gate driver on array substrateVSAvoidantistatic ability of GOA circuit

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

A capacitor is introduced as an intermediary component between the GOA circuit and external environment. The capacitor comprises a first electrode connected to the GOA circuit, a second electrode, and an insulating layer between them. This intermediary structure provides a controlled path for electrostatic discharge, protecting the GOA circuit from direct ESD damage while maintaining the integration benefits.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The capacitor is configured to absorb and dissipate electrostatic charges before they can reach and damage the GOA circuit. By placing the capacitor in advance around the GOA circuit region, the system creates a protective buffer that cushions against potential ESD events during manufacturing and usage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Ease of manufacture

Engineering Contradiction:

Improveintegration of gate driver on array substrateVSAvoiddamage from external static electricity

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The capacitor serves as a protective intermediary that intercepts external static electricity before it can damage the GOA circuit. The first electrode of the capacitor is positioned to receive external ESD, and the insulating layer prevents direct discharge into the sensitive GOA circuit components.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The capacitor converts the harmful effect of external static electricity into a beneficial protective mechanism. By allowing the capacitor to charge from external ESD, the system transforms potentially damaging energy into a controlled charging process that dissipates safely through the insulating layer, protecting the GOA circuit.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of manufacture

Engineering Contradiction:

Improveintegration of gate driver on array substrateVSAvoidyield of display panel products

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The capacitor is incorporated into the manufacturing process as a protective measure taken beforehand. By including the capacitor structure in the array substrate fabrication process, the system prevents ESD damage during subsequent handling and assembly, thereby reducing defect rates and improving overall product yield.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The capacitor acts as a protective intermediary that prevents ESD-induced defects during manufacturing and assembly processes. This protective structure reduces the rate of ESD-related failures, directly improving product yield while maintaining the cost-effective integrated GOA circuit design.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 capacitor effectively redirects static electricity discharge outside the GOA circuit, enhancing the display panel's antistatic ability and yield by protecting internal signal lines and preventing damage during manufacturing and usage.

Implementation Method 1

the first conducting wire, the insulating layer and the second conducting wire form a first capacitor

Methodology Applied

Scientific EffectCapacitance: Capacitance

Implementation Method 2

prevent the interior of the GOA circuit from being damaged by an external static electricity

Methodology Applied

Scientific EffectElectrostatic discharge: Electrostatic Discharge

Data Source

PatentUS9429802B2Display panel and display device

Publication Date: 2016.08.30 BOE TECHNOLOGY GROUP CO LTD

AI summary

A display panel and a display device are provided, and the display panel comprises a GOA circuit; a first conducting wire and a second conducting wire are disposed in a region outside the GOA circuit; an insulating layer is disposed between the first conducting wire and the second conducting wire; and the first conducting wire, the insulating layer and the second conducting wire form a first capacitor. The display panel can protect the internal signal lines of the GOA circuit and the display panel, and increase the antistatic ability of the display panel and the yield of products.