Inkjet Nozzle Mapping for Faster Display Emission Layer Printing
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Solution Overview
Problem
Inkjet printing methods for forming emission layers in display apparatuses, such as organic light-emitting displays, are inefficient due to excessive time consumption.
Innovation Solution
A method of setting inkjet printing that involves arranging nozzles in a specific pattern and adjusting their positions to maximize coverage, allowing for efficient formation of emission layers by optimizing nozzle placement and movement over the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional inkjet printing methods are used to form emission layers, then the manufacturing process can be completed, but excessive time is consumed making the process inefficient
Solution Approach 1:
The printing process is segmented into multiple passes, with each pass targeting specific dotting areas. The method identifies and prints on subsets of dotting areas in different passes, allowing the head to cover more areas efficiently without redundant movements.
Solution Approach 2:
The method performs preliminary identification of dotting areas and nozzle correspondence before actual printing. By pre-calculating which nozzles correspond to which dotting areas and planning the printing passes in advance, the system avoids unnecessary movements and optimizes the printing path.
2Manufacturing precision
If the printing head covers all dotting areas systematically, then complete coverage is achieved, but redundant movements increase processing time
Solution Approach 1:
Instead of having the printing head cover all dotting areas in every pass, the method uses partial action by identifying specific subsets of dotting areas for each pass. This eliminates redundant movements while ensuring complete coverage across multiple optimized passes.
Solution Approach 2:
The method incorporates feedback by tracking which dotting areas have been covered and which remain. This information is used to dynamically adjust the printing plan for subsequent passes, ensuring complete coverage without redundant operations.
3Productivity
If nozzle positions are optimized for maximum coverage, then printing efficiency improves, but the complexity of positioning and coordination increases
Solution Approach 1:
The complex positioning and coordination are performed in advance by identifying nozzle-dotting area correspondences and planning printing passes before actual printing begins. This preliminary planning simplifies the real-time execution while maintaining optimized positioning.
Solution Approach 2:
The method dynamically adjusts the printing plan based on the identified correspondences between nozzles and dotting areas. By making the positioning adaptive rather than fixed, the system optimizes coverage efficiency while managing complexity through intelligent coordination.
Data Source
AI summary
A method of setting inkjet printing includes arranging a first head including a plurality of first nozzles arranged in a first direction over one row including a plurality of dotting areas, such that an outermost first nozzle from among the plurality of first nozzles corresponds to an outermost dotting area from among the plurality of dotting areas, identifying, from among the plurality of dotting areas, dotting areas for which corresponding ones of the plurality of first nozzles do not exist as first dotting areas, and, changing a position of the first head over the one row while changing a first nozzle corresponding to an outermost dotting area from among the first dotting areas, and, when a number of dotting areas from among the first dotting areas for which corresponding ones of the plurality of first nozzles exist is maximized, identifying the first nozzle as a first target nozzle.