Fluorinated Electrode Patterning for Transparent UDC Displays
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Solution Overview
Problem
Current electrode patterning methods for display devices, such as shadow mask and laser techniques, face challenges in achieving precise patterns without distortion and are not suitable for mass production due to high costs and complexity, especially in the development of bezel-less Under Display Camera technologies where high transmittance is required.
Innovation Solution
A fluorinated compound represented by Formula (1) is used for patterning metals or electrodes, allowing for the formation of precise electrode patterns without the need for a shadow mask and enabling high light transmittance, thus facilitating the production of transparent display devices with improved UDC technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shadow mask method is used for electrode patterning, then electrode pattern can be formed, but bending phenomenon occurs during high-temperature deposition process causing mask shape and electrode pattern distortion
Solution Approach 1:
The patent extracts and eliminates the shadow mask component from the patterning system by using a fluorinated compound that enables direct self-patterning during deposition. This removes the source of thermal expansion and bending issues while maintaining the ability to form precise electrode patterns through the compound's inherent patterning properties.
Solution Approach 2:
The fluorinated compound acts as an intermediary layer between the deposition process and the substrate, providing pattern definition without requiring a separate mask. This intermediary compound enables precise patterning while being compatible with high-temperature deposition processes, resolving the contradiction between pattern precision and thermal stability.
2Manufacturing precision
If shadow mask method is used for electrode patterning, then electrode pattern can be formed, but time and cost for maintaining the mask are required making it unsuitable for mass production
Solution Approach 1:
The patent removes the shadow mask from the manufacturing process entirely, replacing it with a maskless deposition approach using fluorinated compounds. This eliminates all maintenance time and costs associated with masks while maintaining pattern precision, directly improving productivity for mass production.
Solution Approach 2:
The fluorinated compound performs the dual function of both defining the pattern and serving as the deposition layer itself. This self-service capability eliminates the need for separate mask components and their associated maintenance activities, streamlining the manufacturing process for high-volume production.
3Manufacturing precision
If laser method is used for electrode patterning, then electrode pattern can be formed, but determination of laser type and intensity is complex and substrate damage may occur
Solution Approach 1:
The patent replaces the complex laser-based patterning system with a chemical vapor deposition approach using fluorinated compounds. This substitution eliminates the need for complex laser parameter optimization and intensity control, replacing mechanical/optical complexity with a more straightforward chemical deposition process that inherently provides precise patterning.
4Manufacturing precision
If conventional electrode patterning methods are used, then electrode can be patterned, but light transmittance is reduced which is problematic for transparent display technology
Solution Approach 1:
The patent changes the material parameters by using fluorinated compounds with specific properties that enable formation of ultra-fine electrode patterns with minimal material usage. This parameter change in material composition and pattern dimensions allows precise patterning while maintaining high light transmittance, meeting the requirements for transparent display technology.
Data Source
AI summary
Provided are a fluorinated compound for patterning a metal or an electrode (cathode), an organic electronic element using the same, and an electronic device thereof, wherein a fine pattern of the electrode is formed by using the fluorinated compound as a material for patterning a metal or an electrode (cathode), without using a shadow mask, and it is possible to more easily apply UDC since it is easy to manufacture a transparent display having high light transmittance.