Inkjet Printing Apparatus for Bipolar Element Alignment
Solution Overview
Problem
Current inkjet printing technologies face challenges in efficiently aligning and seating bipolar elements on a target substrate with high precision and speed, particularly in display device manufacturing, where continuous process integration and reduced preparation times are essential.
Innovation Solution
An inkjet printing apparatus is designed with a stage that moves in a first direction, equipped with an inkjet device, electric field generating devices, and a light irradiation device, allowing for continuous printing processes. The apparatus generates an electric field to orient bipolar elements, which are then aligned and seated on the substrate using light irradiation and drying processes, enabling improved alignment and reduced overall process time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple printing processes are performed sequentially with preparation time between each process, then process completion is achieved, but overall process time increases
Solution Approach 1:
The patent implements continuous printing by arranging multiple printing heads and substrates in a line, allowing the printing process to continue without interruption. The first substrate receives ink from the first printing head while the second substrate receives ink from the second printing head simultaneously, eliminating idle preparation time between processes and achieving continuous productive action throughout the printing sequence.
Solution Approach 2:
The patent applies preliminary action by pre-positioning multiple substrates and printing heads before the printing process begins. The substrates are arranged in advance on the moving table, and the printing heads are positioned accordingly, so that when the table moves to the first position, printing can start immediately without preparation time. This advance arrangement enables seamless transition between printing processes.
2Manufacturing precision
If bipolar elements are aligned using electric field and light irradiation, then alignment precision is improved, but process complexity increases
Solution Approach 1:
The patent merges the electric field generation and light irradiation alignment functions into a single integrated alignment device structure. The electric field generating electrodes and light irradiation sources are combined in one unit that operates simultaneously, achieving precise bipolar element alignment through both mechanisms without requiring separate complex alignment systems for each function.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting the strength and direction of the electric field while simultaneously controlling light irradiation intensity. By coordinating these parameter changes, the system achieves precise alignment of bipolar elements - the electric field orients the elements while the light irradiation enhances or stabilizes this orientation, with both parameters optimized together rather than independently.
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
This solution enables high-precision alignment and seating of bipolar elements, reducing unnecessary preparation times between printing processes and enhancing the efficiency of display device manufacturing by allowing continuous operation of the inkjet printing apparatus.
Implementation Method 1
a plurality of electric field generating devices that generate an electric field on the stage
Implementation Method 2
a light irradiation device that irradiates the stage with light
Implementation Method 3
a drying device that dries the ink jetted onto the stage
Data Source
AI summary
Provided are an inkjet printing apparatus and a printing method of a bipolar element by using the inkjet printing apparatus. The inkjet printing apparatus includes: a stage that moves in a first direction; an inkjet device that sprays ink on the stage; a. plurality of electric field generating devices that generate an electric field on the stage, are spaced apart from the stage, and are movable in the first direction independently from the stage; a light irradiation device that irradiates the stage with light; and a drying device that dries the ink sprayed on the stage, wherein the inkjet device, the light irradiation device, and the drying device are arranged along the first direction,