Color Filter Light Blocking Pattern Ink Repellency
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Solution Overview
Problem
Existing methods for manufacturing color filters using inkjet printing face issues with color mixing, unfilling, and surface uniformity due to the lack of ink repellency in light blocking parts and the complexity of separate surface treatments required to achieve hydrophilic properties in pixel units.
Innovation Solution
A method involving the application of a light blocking part material with ink repellency properties, followed by prebaking, selective exposure, precuring, and postbaking, which maintains the hydrophilic property of pixel units while ensuring ink repellency of the light blocking part, allowing for uniform ink spread and filling without additional surface treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light blocking part material has high ink repellency to prevent color mixing, then ink repellency is improved, but the pixel unit surface becomes hydrophobic causing unfilling and poor ink spreadability
Solution Approach 1:
The invention applies different surface properties to different regions: the light blocking part maintains ink repellency while the pixel unit region achieves hydrophilicity through UV irradiation, allowing each region to have the desired local property without affecting the other
Solution Approach 2:
The invention applies a hydrophilic promoter solution before inkjet printing and performs UV irradiation to pre-establish the hydrophilic property in pixel units, ensuring proper ink spreadability before the actual printing process occurs
2Manufacturing precision
If separate surface treatment processes are performed to achieve hydrophilic properties in pixel units, then ink spreadability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The invention combines the surface treatment step with the existing manufacturing process by applying the hydrophilic promoter solution and performing UV irradiation as integrated steps, eliminating the need for separate surface treatment equipment and processes
Solution Approach 2:
The UV irradiation step serves multiple functions: it cures the light blocking part material and simultaneously activates the hydrophilic promoter in pixel units to create hydrophilic surfaces, combining two processes into one
3Manufacturing precision
If photolithography process is used to form fine patterns, then pattern precision is improved, but manufacturing complexity and material usage increase
Solution Approach 1:
The invention extracts the surface treatment function from the traditional photolithography process by applying a hydrophilic promoter solution and using UV irradiation, separating the pattern formation step from the surface property modification step
Solution Approach 2:
The invention changes the surface energy parameters of the pixel unit region through UV irradiation of the hydrophilic promoter, transforming the surface from hydrophobic to hydrophilic without changing the physical structure or requiring additional processing steps
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 prevents color mixing and unfilling, maintains surface uniformity, and reduces manufacturing steps, thereby simplifying the process and lowering costs while ensuring effective ink spreadability in pixel units.
Implementation Method 1
prebaking the light blocking part material to form a light blocking layer
Implementation Method 2
selectively exposing and developing the light blocking layer to form a light blocking part pattern
Implementation Method 3
precuring the light blocking part pattern
Implementation Method 4
postbaking the light blocking part and the solution
Data Source
AI summary
The present invention relates to a method of manufacturing a color filter and a color filter manufactured by using the same. More particularly, the present invention relates to a method of manufacturing a color filter that includes a) applying a light blocking part material on a substrate; b) prebaking the light blocking part material to form a light blocking layer; c) selectively exposing and developing the light blocking layer to form a light blocking part pattern; d) precuring the light blocking part pattern; e) applying a solution on the substrate on which the light blocking part pattern is formed; f) postbaking the light blocking part and the solution; and g) filling ink in a pixel unit that is defined by the light blocking part pattern, and a color filter manufactured by using the same.