Cover Plate Electrostatic Transfer Layer for Display Durability

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Solution Overview

Problem

In display devices, electrostatic charges generated during manufacturing can accumulate on anti-fingerprint film layers and cover plates, leading to reduced wear resistance, durability, and potential display module breakdowns due to electrostatic discharge.

Innovation Solution

Incorporating an electrostatic transfer layer between the cover plate base and the anti-fingerprint film layer, or on the cover plate base away from the anti-fingerprint film layer, to transfer and discharge static electricity, thereby preventing accumulation and enhancing durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an anti-fingerprint film layer is applied on the cover plate to improve appearance and fingerprint resistance, then the appearance quality and fingerprint resistance are improved, but electrostatic charges accumulate on the film layer leading to reduced wear resistance and durability

Engineering Contradiction:

Improvefingerprint resistanceVSAvoidelectrostatic charge accumulation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an electrostatic transfer layer as an intermediary component between the cover plate base and the anti-fingerprint film layer. This layer acts as a mediator that captures and transfers electrostatic charges away from the anti-fingerprint film layer, preventing charge accumulation while preserving the fingerprint-resistant properties of the film.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent converts the harmful electrostatic charge accumulation into a beneficial effect by using the electrostatic transfer layer to harness the static electricity and redirect it to the edge of the cover plate. The harmful electrostatic charges that would otherwise damage the anti-fingerprint film are instead channeled to a safe discharge location, protecting the functional layer while utilizing the electrostatic phenomenon.

Inventive Principle:

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

2Reliability

If the cover plate structure is modified to include additional layers for electrostatic charge management, then electrostatic discharge is prevented and durability is improved, but the device complexity increases

Engineering Contradiction:

ImprovedurabilityVSAvoidcover plate structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The electrostatic transfer layer is implemented as a thin film structure that can be integrated into the existing cover plate manufacturing process. This thin film approach maintains the overall compactness of the cover plate while providing the necessary electrostatic charge transfer functionality, minimizing the increase in structural complexity.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The electrostatic transfer layer serves multiple functions simultaneously: it transfers electrostatic charges away from the anti-fingerprint film layer, provides a conductive path for charge dissipation, and maintains the structural integrity of the cover plate assembly. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If the electrostatic transfer layer is positioned between the cover plate base and the anti-fingerprint film layer, then electrostatic charge transfer is effective, but the manufacturing process complexity increases

Engineering Contradiction:

Improveelectrostatic charge transfer efficiencyVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent segments the cover plate structure into distinct functional layers: the cover plate base, the electrostatic transfer layer, and the anti-fingerprint film layer. This segmentation allows each layer to be optimized and manufactured separately using specialized processes, then assembled together. The electrostatic transfer layer can be applied using conventional thin film deposition techniques, and the anti-fingerprint film can be applied using standard coating methods, keeping individual manufacturing steps relatively simple.

Inventive Principle:

Principle #1Segmentation

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 electrostatic transfer layer effectively reduces electrostatic charge accumulation, improving the durability of the anti-fingerprint film layer and preventing display module abnormalities caused by electrostatic discharge, thus prolonging the service life of the display module.

Implementation Method 1

an electrostatic transfer layer disposed between the cover plate base and the anti-fingerprint film layer or disposed on a side of the cover plate base facing away from the anti-fingerprint film layer, the electrostatic transfer layer is configured to transfer static electricity generated by the cover plate

Methodology Applied

Scientific EffectElectrostatic induction: Electrostatic Induction

Data Source

PatentUS20240349575A1Cover plate, display module, and display device

Publication Date: 2024.10.17 CHENGDU BOE OPTOELECTRONICS TECH CO LTD

AI summary

Provided are a cover plate, a display module, and a display device. The cover plate includes: a cover plate base (10) and an anti-fingerprint film layer (11) disposed on a side of the cover plate base (10); and an electrostatic transfer layer (20) disposed between the cover plate base (10) and the anti-fingerprint film layer (11) or disposed on a side of the cover plate base (10) facing away from the anti-fingerprint film layer (11).