Display Panel Black Matrix Electrostatic Discharge via Conduction Section

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Solution Overview

Problem

Full In-Cell (FIC) capacitive touch screens face issues with static electricity accumulation on the black matrix, leading to degraded device performance and potential damage due to weak anti-ESD (Electro-Static Discharge) ability and abnormal panel display caused by static electricity concentration.

Innovation Solution

A display panel design featuring a first substrate with a conduction section electrically connected to a grounded section and a second substrate with a black matrix electrically connected to the conduction section, allowing for the discharge of static electricity accumulated on the black matrix.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a black matrix is used in the display panel, then light shielding and display quality are improved, but static electricity accumulates on the black matrix causing harmful effects

Engineering Contradiction:

Improvelight shielding capabilityVSAvoidstatic electricity accumulation

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent applies the 'Blessing in disguise' principle by converting the harmful static electricity accumulation on the black matrix into a beneficial electrostatic discharge function. A conduction section is designed to extend from the display region to the peripheral region, electrically connecting the black matrix to a grounded section. This allows the black matrix to discharge accumulated static electricity safely, transforming the harmful effect into a protective feature that prevents display abnormalities and potential damage.

Inventive Principle:

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

Solution Approach 2:

The patent applies the 'Intermediary' principle by introducing a conduction section as an intermediary element between the black matrix and the grounded section. This conduction section serves as a mediator that provides a controlled pathway for electrostatic discharge, allowing the black matrix to release accumulated charge without directly contacting the ground, thus protecting the display panel while maintaining the black matrix's light shielding function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Illumination intensity

If the black matrix is made thicker to improve light shielding, then display quality improves, but static electricity concentration increases

Engineering Contradiction:

Improvelight shielding effectivenessVSAvoidstatic electricity concentration

Core Design Contradiction:

Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The patent applies the 'Blessing in disguise' principle by providing an electrostatic discharge pathway that converts the harmful effect of static electricity concentration into a beneficial protective mechanism. The conduction section with extended thickness in the peripheral region ensures that even with a thicker black matrix, accumulated static electricity can be safely discharged through the conduction section to the grounded section, preventing display abnormalities.

Inventive Principle:

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

3Device complexity

If no electrostatic discharge path is provided, then device structure remains simple, but static electricity causes abnormal display and potential damage

Engineering Contradiction:

Improvestructural simplicityVSAvoidanti-ESD capability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies the 'Intermediary' principle by introducing a conduction section as a mediator that provides electrostatic discharge functionality with minimal structural complexity. The conduction section extends from the display region to the peripheral region and connects to a grounded section, creating a simple but effective pathway for static electricity discharge that enhances reliability without significantly complicating the device structure.

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

Prevents static electricity from affecting the display effect or damaging the panel by effectively discharging it, thereby enhancing the electrostatic discharge capability and maintaining panel performance.

Implementation Method 1

a conduction section is in the peripheral region of the first substrate, and the conduction section is electrically connected with a grounded section. The black matrix is electrically connected with the conduction section, allowing for the discharge of static electricity accumulated on the black matrix

Methodology Applied

Scientific EffectElectrostatic Discharge: Electrostatic Discharge

Data Source

PatentUS11237437B2Display panel and manufacture method thereof, and display apparatus

Publication Date: 2022.02.01 BOE TECHNOLOGY GROUP CO LTD

AI summary

A display panel and a manufacture method thereof, and a display apparatus are provided. The display panel includes a first substrate and a second substrate which arranged opposite to each other. The first substrate includes a display region and a peripheral region, a conduction section is in the peripheral region of the first substrate, and the conduction section is electrically connected with a grounded section. The second substrate includes a display region and a peripheral region, a black matrix is at least in the peripheral region of the second substrate, and the black matrix is electrically connected with the conduction section.