Photocurable MAV Monomer LCD Fabrication Process
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Solution Overview
Problem
Conventional methods for fabricating Multi-domain Vertical Alignment (MVA) layers in LCDs are complex and require high technical expertise, leading to increased manufacturing costs and process complexity.
Innovation Solution
A method involving the use of photocurable organic monomers coated on a glass substrate, patterned with a photomask, and cured using light or heat, simplifying the process by eliminating the need for soft baking and allowing for the reuse of unpatterned monomers, thereby reducing costs and technical requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional processes (coating, soft baking, exposure, development, hard baking) are used to fabricate MVA layer, then the MVA layer can be formed, but the process becomes complex and requires high technical requirements
Solution Approach 1:
The patent combines multiple conventional process steps (coating, soft baking, exposure, development, hard baking) into a simplified three-step process (coating, patterning, curing). The organic monomer material inherently provides alignment function during coating, eliminating the need for separate soft baking and alignment layer formation steps, thereby reducing process complexity while maintaining MVA layer formation quality
Solution Approach 2:
The patent extracts and removes unnecessary process steps from the conventional fabrication sequence. By using photocurable organic monomers that self-align during coating, the soft baking step and separate alignment layer formation are eliminated, leaving only the essential coating, patterning, and curing steps, thus simplifying the overall process
2Reliability
If conventional processes with multiple steps are used, then complete MVA layer fabrication is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple process steps into fewer operations, reducing the number of equipment uses, material consumptions, and quality control checkpoints required. The combined coating-patterning-curing process reduces manufacturing time and cost while ensuring complete MVA layer fabrication through the inherent properties of the photocurable organic monomer material
Solution Approach 2:
The photocurable organic monomer material performs multiple functions automatically: it provides alignment during coating, forms the MVA pattern during exposure, and cures to complete the layer. This self-service capability of the material eliminates the need for separate alignment layers and multiple processing steps, reducing manufacturing complexity and cost
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 method simplifies the fabrication process, reduces manufacturing costs, and ensures effective curing of the MVA layer, enhancing the production efficiency and environmental sustainability of LCDs while maintaining the performance of the liquid-crystal alignment.
Implementation Method 1
patterning the MAV organic monomers through a photomask
Implementation Method 2
curing the patterned MAV organic monomers... photo-curing and/or heat treating the patterned MAV organic monomers
Implementation Method 3
curing the patterned MAV organic monomers... photo-curing and/or heat treating the patterned MAV organic monomers... A temperature of the heat treatment is between 50 to 250 degrees with a treatment duration between 30 to 540 seconds
Data Source
AI summary
The present invention relates to a method for fabricating an LCD. The method includes fabricating a MAV layer on a glass substrate. The step of fabricating the MAV layer on the glass substrate comprises the steps of: (A) coating MAV organic monomers on the glass substrate; (B) patterning the MAV organic monomers through a photomask; and (C) curing the patterned MAV organic monomers. In accordance with a photo-curing material of the MAV layer, the fabricating method of the present invention has simple processes with low technical requirements.