Display Adhesive Composition for Anti-Static Corrosion Control
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Solution Overview
Problem
Existing display devices face issues with electrostatic discharge leading to corrosion of metal lines, which affects the reliability and performance of the devices due to insufficient anti-static properties in the adhesive agents used.
Innovation Solution
Incorporating a specific range of halogen ions and sulfur ions in the anti-static agent dispersed within the adhesive agent, which includes a conductive polymer and surfactant, to prevent corrosion and ensure effective anti-static functionality without compromising the integrity of the metal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-static agents with high ion content are used to prevent electrostatic discharge, then anti-static properties are improved, but metal lines become corroded due to excessive ions
Solution Approach 1:
The patent applies parameter changes by precisely controlling the ion content parameters in the anti-static agent. Specifically, it limits halogen ions to 1-1000 ppm and sulfur ions to 100-5000 ppm, transforming the anti-static agent from a high-ion formulation that causes corrosion to a low-ion formulation that prevents electrostatic discharge while protecting metal lines.
Solution Approach 2:
The patent uses composite materials by combining multiple components in the adhesive agent including conductive polymers (polyaniline, polypyrrole, polythiophene), surfactants with specific ion contents, and crosslinking agents. This composite approach achieves effective anti-static properties through the synergistic effect of different materials while maintaining low overall ion content to prevent corrosion.
2Strength
If conventional adhesive agents are used to bond display panel components, then bonding function is achieved, but electrostatic discharge occurs due to insufficient anti-static properties
Solution Approach 1:
The patent applies universality by designing the adhesive agent to perform multiple functions simultaneously: it provides strong bonding between display panel components while also functioning as an anti-static agent. The adhesive agent includes both adhesive components (for bonding) and conductive polymer/surfactant components (for anti-static properties), eliminating the need for separate anti-static treatments.
Solution Approach 2:
The adhesive agent is formulated as a composite material combining adhesive resins with conductive polymers and surfactants. This composite structure enables the single material to achieve both bonding strength and anti-static functionality, resolving the contradiction between mechanical strength and electrical 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 solution effectively prevents corrosion of metal lines and reduces electrostatic discharge, enhancing the reliability and performance of display devices by maintaining optimal surface resistance and preventing stain failures.
Implementation Method 1
The adhesive agent may contain (include) an anti-static agent to prevent or reduce an electrostatic discharge from occurring between components
Data Source
AI summary
A display device according to embodiments of the present disclosure includes a display panel, a protection member to protect the display panel, and an adhesive member between the display panel and the protection member to couple the display panel to the protection member. The display panel may include a plurality of pixels to display an image, and the adhesive member may include an adhesive agent and an anti-static agent dispersed in the adhesive agent. The anti-static agent may include halogen ions, and a content of halogen ions with respect to a total weight of the adhesive agent may be within a range (e.g., from about 1 ppm to about 1000 ppm) capable of reducing stain failures caused by static electricity, without causing corrosion of driving lines in the display.