Conductive Electrode Structure With Low-Reflectivity Oxide Layer
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Solution Overview
Problem
Conventional liquid crystal display technologies face challenges in achieving high image quality due to high reflectivity issues with pixel and common electrodes, particularly in in-plane switching modes, which lead to visibility problems and require additional layers to reduce reflection and improve color characteristics, while also facing difficulties in etching and patterning processes for light reflection reducing layers.
Innovation Solution
A conductive structure body is developed, comprising a substrate with a metal layer and a light reflection reducing layer made of oxides or oxynitrides of Mo and Ti, which is applied on at least one surface of the metal layer to reduce reflectivity and improve visibility, and can be manufactured using methods like sputtering or chemical vapor deposition, allowing for batch etching and patterning of both layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal layer is used for electrodes in IPS mode liquid crystal displays, then electrical conductivity is improved, but light reflectivity increases causing visibility problems and poor image quality
Solution Approach 1:
The patent applies composite materials by combining a metal layer with specific oxide layers (such as tungsten oxide, molybdenum oxide, or titanium oxide) to create a multi-layer conductive structure. This composite structure maintains the high electrical conductivity of the metal layer while the oxide layers reduce light reflectivity and improve color characteristics, thereby resolving the contradiction between conductivity and reflectivity issues in IPS mode liquid crystal displays
Solution Approach 2:
The patent changes the physical and chemical parameters of the electrode structure by controlling the thickness, composition, and oxidation state of the metal layer and oxide layers. By adjusting these parameters, the electrode achieves optimal balance between electrical conductivity and optical properties (reflectivity reduction), solving the visibility problems associated with high reflectivity metal electrodes
2Object-affected harmful factors
If additional layers are added to reduce light reflection, then image quality and visibility are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies local quality by selectively forming oxide layers only on specific surfaces of the metal layer where light reflection needs to be reduced. The oxide layer composition and thickness are optimized for the specific optical requirements of that location, thereby reducing overall device complexity while still achieving improved image quality and visibility where needed
3Ease of manufacture
If conventional etching methods are used for light reflection reducing layers, then manufacturing process is simple, but etching precision and pattern quality deteriorate
Solution Approach 1:
The patent changes the chemical and physical parameters of the etching process by selecting specific etchants that match the composition of the oxide layers (e.g., using acid-based etchants for metal oxides). This parameter optimization enables precise patterning of the light reflection reducing layers while maintaining ease of manufacture through chemically selective etching processes
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 reduces reflectivity and improves visibility by absorbing light, minimizing glare and color issues, while enabling efficient etching and patterning of the metal and light reflection reducing layers, thus enhancing the performance of electrodes in liquid crystal displays and touch screen panels.
Implementation Method 1
The solution effectively reduces reflectivity and improves visibility by absorbing light
Implementation Method 2
which can be manufactured using methods like sputtering or chemical vapor deposition
Implementation Method 3
which can be manufactured using methods like sputtering or chemical vapor deposition
Data Source
AI summary
The present specification relates to a conductive structure body, a method for manufacturing the same, and an electrode and an electronic device including the conductive structure body.