Inkjet Head Nozzle Alignment for Faster Display Emission 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 involves arranging heads with nozzles in specific directions and positions to maximize nozzle coverage over dotting areas, identifying non-existent nozzle areas, and adjusting head positions to optimize nozzle alignment and ink application, allowing for efficient ink distribution across 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 divided into multiple passes, with each pass handling specific dotting areas. The method identifies and processes first dotting areas, second dotting areas, and third dotting areas in sequence, allowing systematic coverage of all areas while optimizing nozzle utilization in each pass.
Solution Approach 2:
Before actual printing, the method pre-arranges the printing head at optimal positions and pre-identifies target nozzles for each dotting area. This preliminary positioning and nozzle selection maximizes the number of dotting areas that can be covered in each printing pass, reducing total printing time.
2Productivity
If the printing head is positioned to cover maximum dotting areas, then printing efficiency improves, but precise alignment between nozzles and dotting areas becomes more difficult
Solution Approach 1:
The method dynamically adjusts the printing head position and nozzle selection based on the specific configuration of dotting areas. By identifying which nozzles correspond to which dotting areas and adjusting positions accordingly, the system maintains precise alignment while maximizing coverage in each pass.
Solution Approach 2:
The method uses feedback from the identified correspondence between nozzles and dotting areas to optimize head positioning. By monitoring which nozzles can effectively cover which dotting areas, the system adjusts positions to maintain optimal alignment precision while covering maximum areas.
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.