Curved LCD Panel Manufacturing via Partial Curing
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Solution Overview
Problem
Conventional methods for manufacturing curved liquid crystal display panels often result in damaged substrates due to stress from the bending process, as the stress is not adequately released during the bending of planar structures into curved forms.
Innovation Solution
A method involving partial curing of sealing gum on the frame sealing regions before bending, followed by a second curing after bending, to reduce substrate stress and prevent damage, using ultraviolet irradiation to form an initial cured sealing gum between substrates, which are then adhered and bent along the extension direction of the frame bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If all frame sealing regions are cured before bending, then the panel maintains structural integrity, but the substrates are easily damaged due to accumulated stress during bending
Solution Approach 1:
The frame sealing region is divided into multiple segments along the bending direction, with only partial segments cured before bending. This segmentation allows stress to be released in uncured portions while maintaining structural integrity in cured portions, preventing substrate damage during the bending process.
Solution Approach 2:
A partial curing process is performed before bending to create an initial cured sealing gum that provides just enough adhesion to hold substrates together during bending, while leaving remaining portions uncured to allow stress release. This preliminary partial curing action prevents both substrate damage and excessive panel separation.
2Reliability
If partial curing is performed before bending, then substrate stress is reduced and damage is prevented, but the manufacturing process becomes more complex with multiple curing steps
Solution Approach 1:
The curing process is performed periodically in two stages: first a partial curing before bending to enable stress-free bending, then a second curing after bending to complete the sealing. This periodic curing approach simplifies the overall process compared to attempting single-step complete curing while maintaining substrate protection.
3Strength
If complete curing is performed before bending, then the sealing gum provides strong adhesion, but the panel cannot achieve controlled curvature due to stress accumulation
Solution Approach 1:
Instead of applying full curing strength before bending, only a partial curing action is performed to provide minimal necessary adhesion for handling, while leaving sufficient uncured material to allow stress-free deformation. After bending, a second curing action completes the adhesion, achieving both curvature control and strong final bonding.
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 reduces substrate stress during the bending process, preventing damage and improving the manufacturing efficiency by allowing for controlled curvature and bending angles in curved liquid crystal display panels.
Implementation Method 1
utilizing ultraviolet rays to irradiate said partial sealing gum on the first set of frame bodies or said partial sealing gum on the third set of frame bodies such that an initial cured sealing gum having a predetermined length is formed between the first set of frame bodies and the third set of frame bodies
Data Source
AI summary
The present invention provides a method for manufacturing a curved liquid crystal display panel, which comprises coating a sealing gum on a first or a second frame sealing region; filing liquid crystals between the two substrates and adhering the two substrates together; performing a first curing on partial sealing gum on a first set or a third set of frame bodies; bending the first set and the third set of frame bodies obtained after the first curing along the extension direction of the first set of frame bodies; performing a second curing on uncured sealing gum on the two bended substrates.