Fluorinated Cathode Patterning Without Shadow Masks
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Solution Overview
Problem
Existing electrode patterning methods for display devices, such as shadow mask and laser patterning, are inefficient and costly, leading to distorted patterns and substrate damage, which are not suitable for mass production of high-transmittance UDC cameras in flexible displays.
Innovation Solution
A fluorinated compound represented by Formula (1) is used for patterning metals or electrodes, allowing for precise electrode formation without a shadow mask, facilitating easy manufacturing of transparent displays with high light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shadow mask is used for electrode patterning, then electrode pattern can be formed, but mask bending occurs during high-temperature deposition causing pattern distortion and increased maintenance cost
Solution Approach 1:
The patent removes the shadow mask from the patterning process entirely. Instead of using a physical mask that bends and distorts, the invention employs a fluorinated compound applied directly to the cathode that selectively prevents metal deposition in specific regions, achieving pattern formation without any mask component
Solution Approach 2:
The fluorinated compound acts as an intermediary substance between the cathode and the metal deposition process. It is applied to specific regions of the cathode and serves as a temporary barrier during deposition, enabling precise pattern formation without requiring a separate mask component
2Manufacturing precision
If shadow mask is used for electrode patterning, then electrode pattern can be formed, but time and cost for mask maintenance are required reducing productivity
Solution Approach 1:
The shadow mask component is completely removed from the system, eliminating all associated maintenance activities. The patterning function is transferred to a chemically applied fluorinated compound that requires no mechanical handling or maintenance
Solution Approach 2:
The fluorinated compound is applied directly to the cathode surface and self-regulates the deposition process. The compound inherently prevents metal deposition in treated regions without requiring external control mechanisms or maintenance interventions
3Manufacturing precision
If laser is used for electrode patterning, then electrode pattern can be formed, but substrate damage may occur due to improper laser type and intensity selection
Solution Approach 1:
The patent replaces the mechanical/thermal laser ablation process with a chemical deposition control method. Instead of using high-energy laser beams that can damage the substrate through excessive heat, the invention uses a fluorinated compound to chemically prevent metal deposition in specific regions, achieving patterning without thermal damage
4Manufacturing precision
If conventional electrode patterning methods are used, then electrode can be patterned, but light transmittance is reduced compromising UDC camera performance
Solution Approach 1:
The fluorinated compound is applied selectively to specific regions of the cathode where pattern definition is needed. This localized application allows the electrode to maintain high transmittance in areas where the compound is not applied, while achieving precise patterning only where required
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 by using the fluorinated compound as a material for patterning a metal or an electrode (cathode), it is possible to form a fine pattern of the electrode without using a shadow mask, since it is easy to manufacture a transparent display having high light transmittance, it is possible to more easily apply UDC.