Liquid Crystal Display Manufacturing Simultaneous Curing
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Solution Overview
Problem
The manufacturing process of liquid crystal displays (LCDs) is complex and time-consuming, particularly in achieving the desired pre-tilt of liquid crystals and sealing substrates, which affects response speed and afterimage reduction.
Innovation Solution
A method involving the simultaneous hardening of an alignment supplement and a sealant by applying a voltage and radiating light to a mother substrate assembly, which pre-tilts liquid crystal molecules and seals the substrates, thereby reducing manufacturing processes and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate hardening processes are used for alignment supplement and sealant, then each component can be properly cured, but manufacturing time and process complexity increase
Solution Approach 1:
The patent combines the hardening processes for the alignment supplement and sealant into a single simultaneous curing operation. Both components are cured together using the same UV irradiation step, eliminating the need for separate hardening processes and reducing manufacturing time while maintaining proper curing of both materials.
Solution Approach 2:
The alignment supplement and sealant are applied in a preliminary state before final curing. The liquid crystal mixture containing the alignment supplement is injected between substrates, and both the alignment supplement and sealant are applied in liquid form before being simultaneously cured by UV irradiation, allowing for flexible positioning and adjustment before final hardening.
2Manufacturing precision
If multiple sequential manufacturing steps are used, then each process can be optimized, but overall production efficiency decreases
Solution Approach 1:
The patent merges multiple manufacturing steps into fewer integrated operations. The alignment supplement application, sealant application, and hardening processes are combined into a streamlined sequence where both materials are applied and cured in overlapping timeframes, reducing the total number of discrete steps while maintaining process control.
Solution Approach 2:
The manufacturing process maintains continuous useful action by overlapping operations. While the sealant is being applied and positioned, the alignment supplement curing can proceed, and both processes converge in a final simultaneous UV hardening step, eliminating idle time between operations and improving overall production efficiency.
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 approach improves response speed and reduces afterimages by fixing the pre-tilt orientation of liquid crystals, simplifying the manufacturing process and shortening overall production time.
Implementation Method 1
simultaneously hardening the alignment supplement and the sealant by radiating light to the mother substrate assembly
Implementation Method 2
pretilting liquid crystal molecules of the liquid crystal mixture layer by applying a voltage to the first mother substrate and the second mother substrate
Data Source
AI summary
A method of manufacturing a liquid crystal display includes; forming a mother substrate assembly by disposing a liquid crystal mixture layer having liquid crystals and a light curable alignment supplement between a first mother substrate and a second mother substrate of a liquid crystal display, and disposing a light curable sealant surrounding the liquid crystal mixture layer, pre-tilting liquid crystal molecules of the liquid crystal mixture layer by applying a voltage to the first mother substrate and the second mother substrate, and simultaneously hardening the alignment supplement and the sealant by radiating light to the mother substrate assembly while applying the voltage to the first mother substrate and the second mother substrate.