Selective Color Filter Stripping for Display Panel Repair
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Solution Overview
Problem
The existing manufacturing methods for liquid crystal display panels result in high defective rates and material waste due to the need to rework or replace entire color filter layers when only specific color filters are defective, rather than selectively stripping the problematic ones.
Innovation Solution
A method involving the use of a selected stripping liquid that reacts with specific additives on the color filters to form protective layers on unaffected filters, allowing for the selective stripping and repair of only the defective color filters, thereby reducing waste and improving yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all color filters are stripped to rework from mother glass, then defective color filters can be replaced, but manufacturing materials are wasted and defective rate remains high
Solution Approach 1:
The invention segments the color filter layer into individually addressable color filters by introducing specific additives to different color filters (first addition to first color filter, second addition to second color filter, third addition to third color filter). This allows selective stripping of only defective color filters using corresponding stripping liquids, rather than stripping the entire color filter layer, thus reducing material waste while maintaining high replacement reliability
Solution Approach 2:
The invention applies different chemical properties to different color filters by incorporating specific additives into each color filter type. This creates local quality differences that enable selective interaction with specific stripping liquids, allowing precise removal of only the defective color filter while preserving others, thereby reducing waste and improving operational reliability
2Loss of substance
If selective stripping of color filters is implemented, then material waste is reduced, but process complexity increases due to multiple additives and stripping liquids
Solution Approach 1:
The invention introduces specific additives as intermediaries between the color filters and stripping liquids. These additives act as chemical mediators that enable selective interaction: each additive corresponds to a specific color filter and reacts selectively with its matching stripping liquid. This intermediary mechanism simplifies the overall process by providing clear chemical pathways for selective removal without requiring complex multi-step procedures
Solution Approach 2:
The invention changes the chemical parameters of color filters by incorporating different specific additives into each color filter type. These parameter changes (different chemical compositions) enable differential responses to stripping liquids, allowing selective stripping based on chemical compatibility rather than physical complexity. The system manages complexity through controlled chemical variation rather than mechanical complexity
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 minimizes the reworking of entire color filter layers, reduces material waste, and lowers the defective rate of finished products by enabling the selective removal and repair of defective color filters without affecting the others.
Implementation Method 1
reacting the colorfilter-to-be-stripped with the selected stripping liquid, and stripping the colorfilter-to-be-stripped by the selected stripping liquid, to form a protective layer on the surface of the color filters except the colorfilter-to-be-stripped
Data Source
AI summary
The present application discloses a manufacturing method of a display panel and a display panel. The manufacturing method includes the steps: forming a color filter layer on a substrate; confirming a colorfilter-to-be-stripped in the color filter layer; and stripping the colorfilter-to-be-stripped by using a selected stripping liquid; the color filter layer includes a first color filter, a second color filter and a third color filter; and the colorfilter-to-be-stripped includes one or two of the first color filter, the second color filter and the third color filter, and the method of stripping the colorfilter-to-be-stripped by the selected stripping liquid includes: letting the colorfilter-to-be-stripped react with the selected stripping liquid, and stripping the colorfilter-to-be-stripped by the selected stripping liquid, and forming a protective layer on the surface of the color filters except the colorfilter-to-be-stripped.