Liquid Crystal Panel Grounding via Transparent Conductive Adhesive
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Solution Overview
Problem
The existing full in cell liquid crystal panels face high manufacturing costs and production yield issues due to the use of conductive polarizers with complex silver plasma processes, which are costly and have poor stability, affecting image quality.
Innovation Solution
A liquid crystal panel design incorporating a polarizer with a main body and extension part attached to a color film substrate using transparent conductive adhesive, forming a discharge loop with a ground point on the array substrate, allowing static discharge without the need for conductive silver plasma, thereby reducing costs and simplifying the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive polarizer with silver plasma process is used, then static discharge function is achieved, but manufacturing cost increases and process complexity increases
Solution Approach 1:
The patent extracts the conductive function from the polarizer itself and separates it into a distinct transparent conductive adhesive layer. This allows the polarizer to remain simple and non-conductive while the adhesive layer provides the grounding function, thereby reducing polarizer complexity and manufacturing cost while maintaining static discharge capability.
Solution Approach 2:
The patent segments the static discharge function from the polarizer by introducing a separate transparent conductive adhesive layer between the polarizer and the color film substrate. This segmentation allows each component to have its own optimized structure and function, reducing overall system complexity.
2Reliability
If conductive polarizer with silver plasma process is used, then static discharge function is achieved, but manufacturing cost increases
Solution Approach 1:
The patent replaces the expensive conductive polarizer with a combination of ordinary polarizer and transparent conductive adhesive. The adhesive, being a simpler and cheaper material, serves as the conductive element, significantly reducing manufacturing cost while maintaining the required static discharge function.
Solution Approach 2:
The conductive function is extracted from the expensive polarizer and transferred to a cheaper transparent conductive adhesive layer, thereby reducing the cost of the polarizer itself while maintaining the overall static discharge capability of the assembly.
3Reliability
If conductive silver plasma is used to connect polarizer to ground, then static discharge path is formed, but attaching stability deteriorates
Solution Approach 1:
The patent merges the polarizer attachment function and the static discharge function into a single transparent conductive adhesive layer. This integration ensures that the adhesive layer provides both mechanical bonding and electrical conductivity, improving attaching stability while maintaining the static discharge path.
Solution Approach 2:
The transparent conductive adhesive acts as an intermediary between the polarizer and the color film substrate, providing both mechanical adhesion and electrical conductivity. This intermediary role ensures stable attachment while maintaining the static discharge path, overcoming the instability of direct silver plasma connections.
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
This solution effectively decreases production costs, increases the stability of the grounding system, and improves image quality by using a general polarizer instead of a conductive one, while maintaining anti-static functionality.
Implementation Method 1
a transparent conductive adhesive is disposed on the main body and the extension part, the main body is attached to a side of the color film substrate away from the array substrate through the transparent conductive adhesive, the extension part extends from a edge of the main body to the color film substrate, a ground point is disposed on the array substrate, the extension part is attached to the ground point through the transparent conductive adhesive, so as to form a discharge loop between the ground point and the main body
Data Source
AI summary
The present disclosure provides a liquid crystal panel, which includes an array substrate, a color film substrate disposed opposite to the array substrate, and a polarizer including a main body and a extension part, a transparent conductive adhesive is disposed on the main body and the extension part, the main body is attached to a side of the color film substrate away from the array substrate through the transparent conductive adhesive, the extension part extends from the color film substrate, a ground point is disposed on the array substrate, and the extension part is attached to the ground point through the transparent conductive adhesive to form a discharge loop. The extension part is connected to the ground through the transparent conductive adhesive instead of the conductive silver plasma, it may achieve the technical effect of simplifying the production process, increasing the stability of the ground, and decreasing the production cost.