Adhesive Layer Static Discharge in Display Panels

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Solution Overview

Problem

Existing display panels face issues with static electricity buildup, which can lead to circuit disconnections and abnormal display outputs, such as red or blue images, due to the lack of effective electrostatic discharge mechanisms, particularly in touch display apparatuses where traditional methods like antistatic coatings or conductive silver paste coatings are either ineffective or costly and complex.

Innovation Solution

Incorporating a conductive material into the adhesive layer of the display panel, which facilitates the transmission of static electricity to an electrostatic release structure, allowing for efficient discharge without the need for additional layers, thus simplifying the structure and maintaining touch signal integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional antistatic coatings or conductive silver paste coatings are used, then static electricity can be discharged, but the structure becomes complex and cost increases

Engineering Contradiction:

Improvestatic electricity dischargeVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the adhesive layer's primary function (bonding) with a secondary electrostatic discharge function by incorporating conductive materials into the adhesive layer. This merging eliminates the need for separate antistatic coatings or conductive silver paste layers, thereby simplifying the overall structure while maintaining effective static electricity discharge capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The adhesive layer is designed to serve multiple functions: it provides structural bonding between layers and simultaneously acts as an electrostatic discharge path through the distributed conductive materials. This multi-functionality reduces the number of components needed and simplifies the device structure while ensuring reliable static electricity release

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If traditional antistatic coatings or conductive silver paste coatings are used, then static electricity can be discharged, but manufacturing cost increases

Engineering Contradiction:

Improvestatic electricity dischargeVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

By merging the electrostatic discharge function into the adhesive layer, the patent eliminates the need for additional materials like antistatic coatings or conductive silver paste. This reduces material costs and simplifies the manufacturing process, making production more economical while maintaining effective static electricity discharge

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent uses inexpensive conductive materials distributed within the adhesive layer instead of expensive traditional antistatic coatings or conductive silver paste. This substitution with cheaper materials reduces manufacturing costs while achieving the same electrostatic discharge functionality

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If additional layers are added for electrostatic discharge, then static electricity can be released, but the structure becomes more complex

Engineering Contradiction:

Improveelectrostatic releaseVSAvoidnumber of layers

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the electrostatic release function into an existing layer (the adhesive layer) rather than adding a separate layer. The conductive materials are distributed within the adhesive layer, allowing it to serve both as a bonding agent and as an electrostatic discharge path, thereby avoiding additional layers and maintaining structural simplicity

Inventive Principle:

Principle #5Merging (Combining)

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 proposed solution effectively releases static electricity, preventing damage to the display module and ensuring accurate touch signals while avoiding the complexity and cost of traditional methods, thereby enhancing the reliability and efficiency of the display panel.

Implementation Method 1

an adhesive layer, disposed above the upper polarizer and in which a conductive material is distributed

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS10309616B2Display panel for releasing static electricity and display device

Publication Date: 2019.06.04 BOE TECHNOLOGY GROUP CO LTD

AI summary

A display panel and a display device are provided, and the display panel includes: an array substrate; an opposing substrate, disposed above the array substrate; an upper polarizer, disposed above the opposing substrate; an adhesive layer, disposed above the upper polarizer and in which a conductive material is distributed; a protection substrate, disposed above the adhesive layer and fixed with the upper polarizer by the adhesive layer; and an electrostatic release structure, contacting with the adhesive layer and configured to release static electricity of the adhesive layer. The adhesive layer provided in embodiments of the present disclosure transmits static electricity produced in the display panel to the electrostatic release structure to release the static electricity from the display panel.