Transparent Conductive Polymer Traces for LCD Sealant Curing
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Solution Overview
Problem
The curing rate of a sealant in liquid crystal displays is reduced due to metal traces blocking ultraviolet light during the curing process.
Innovation Solution
The use of transparent conductive polymer materials for the traces, which allows ultraviolet light to penetrate and improve the curing rate of the sealant, while also providing corrosion resistance and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal traces are used in the non-display region, then electrical conductivity and signal transmission are achieved, but ultraviolet light is blocked during sealant curing, reducing curing rate and yield
Solution Approach 1:
The patent changes the material parameter of the traces from metal to transparent conductive polymer, which maintains electrical conductivity while being transparent to ultraviolet light. This allows UV light to penetrate through the trace layer and effectively cure the sealant underneath, resolving the contradiction between achieving conductivity and maintaining curing rate.
Solution Approach 2:
The patent employs transparent conductive polymer materials that combine the properties of transparency to ultraviolet light with electrical conductivity. This composite material特性 allows the trace to fulfill both its electrical function and its role as a UV-transparent substrate during sealant curing, thereby improving both curing rate and panel yield.
2Ease of operation
If metal traces are positioned under the sealant, then signal transmission is achieved, but the metal traces block ultraviolet light and reduce curing efficiency
Solution Approach 1:
The patent changes the optical parameter of the trace material from opaque (metal) to transparent (conductive polymer) with respect to ultraviolet light, while maintaining the electrical conductivity parameter. This enables UV light to pass through the trace layer effectively, improving curing efficiency without compromising signal transmission functionality.
3Productivity
If conventional sealant curing is used with metal traces, then manufacturing is simplified, but curing rate is reduced and yield decreases
Solution Approach 1:
The patent uses transparent conductive polymer materials that inherently possess both UV transparency and electrical conductivity. This eliminates the need for complex process modifications or additional curing steps, as the standard UV curing process becomes effective immediately. The material substitution alone resolves the contradiction, improving yield without increasing manufacturing complexity.
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
Enhances the curing rate of the sealant, prevents circuit corrosion, and reduces the complexity of the manufacturing process by allowing the transparent conductive polymer traces to transmit signals effectively.
Implementation Method 1
the transparent conductive polymer material includes at least one of polypyrrole, polyphenylene sulfide, polypeptidylcyanine, or polyaniline
Implementation Method 2
in a curing process of the sealant, the metal traces under the sealant will block ultraviolet light and reduce a curing rate of the sealant
Data Source
AI summary
A liquid crystal display panel and a manufacturing method thereof are provided, in which transparent traces are prepared on a first substrate to replace metal traces originally under a sealant, so that ultraviolet light is irradiated on the sealant from a side of the transparent traces in a process of curing the sealant, which can effectively improve a curing rate of the sealant. Moreover, transparent conductive polymer has better corrosion resistance than metal, which can effectively prevent circuit corrosion caused by the sealant absorbing water.