Patterned Film Surface Recovery After Plasma or UV/Ozone Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
UV/ozone cleaning or oxygen plasma cleaning of substrates with patterned films reduces the lyophobicity of the bank surface, leading to ink intrusion into recesses during ink-jet methods, as the cleaning processes lower the hydrophobicity of the bank surface.
Innovation Solution
A method involving a specific fluorine-containing copolymer in the patterned film, where UV/ozone cleaning or oxygen plasma cleaning is followed by a heating treatment to recover the lyophobicity of the film, maintaining sufficient lyophobicity while preserving the lyophilicity of the substrate surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If UV/ozone cleaning or oxygen plasma cleaning is performed on the substrate with patterned film, then the lyophilicity of the substrate surface (recess) is improved, but the lyophobicity of the bank surface deteriorates
Solution Approach 1:
The patterned film is designed to contain a fluorine-containing copolymer that will undergo lyophobicity recovery when heated. This preliminary design ensures that after cleaning reduces lyophobicity, subsequent heating automatically restores it, preventing ink intrusion before the ink-jet process begins
Solution Approach 2:
The lyophobicity of the bank surface is controlled by changing the temperature parameter. Heating the substrate at 50-350°C restores the lyophobicity of the fluorine-containing copolymer, thereby controlling the surface properties to prevent ink intrusion while maintaining cleaning effectiveness
2Reliability
If heating treatment is applied to recover lyophobicity, then the lyophobicity of the patterned film is improved, but energy consumption increases
Solution Approach 1:
The heating temperature range is optimized to 50-350°C, balancing the recovery of lyophobicity with reasonable energy consumption. This parameter optimization ensures sufficient lyophobicity restoration without excessive energy use
Solution Approach 2:
The fluorine-containing copolymer inherently possesses the ability to recover its lyophobicity when heated, without requiring additional chemical treatments or complex processing steps. The material self-restores its protective property through simple thermal energy input
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 effectively recovers the lyophobicity of the patterned film after cleaning, preventing ink intrusion and ensuring accurate ink placement during ink-jet methods, as demonstrated by significant contact angle recoveries with various solvents.
Implementation Method 1
UV/ozone cleaning
Implementation Method 2
UV/ozone cleaning or oxygen plasma cleaning
Implementation Method 3
oxygen plasma cleaning
Implementation Method 4
oxygen plasma cleaning
Implementation Method 5
heating treatment performed thereafter provides the lyophobicity
Data Source
AI summary
The production method of a substrate with a patterned film according to the present disclosure includes: a cleaning step of performing UV/ozone cleaning or oxygen plasma cleaning on a substrate with a patterned film including a substrate and a patterned film on the substrate, to obtain a first substrate with a patterned film; and a heating step of heating the first substrate with a patterned film to obtain a second substrate with a patterned film, wherein the patterned film of the first substrate with a patterned film has a contact angle decreased in the cleaning step, and the patterned film of the second substrate with a patterned film has a contact angle recovered in the heating step.