Optimal Slit Nozzle Design for Uniformity Coating in Display Module Lamination

On a primary converged coat-hanger chamber and a secondary noncircular chamber, reverse droplet-shaped and eye-shaped through-holes were perforated to facilitate the velocity uniformities inside the die. In addition to this reference design, several combinations of the hole number and interval inclu...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 677; no. 1; pp. 42 - 53
Main Authors Lee, Byung-Chul, Park, Byung-Min, Han, Kwan-Young
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 12.12.2018
Taylor & Francis Ltd
Subjects
Computational fluid dynamics
Computer simulation
Design
Design optimization
Fluid dynamics
Hydrodynamics
lamination process
Nozzle design
slit nozzle
slot coating
Velocity
Vertical orientation
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Summary:On a primary converged coat-hanger chamber and a secondary noncircular chamber, reverse droplet-shaped and eye-shaped through-holes were perforated to facilitate the velocity uniformities inside the die. In addition to this reference design, several combinations of the hole number and interval including the vertical-hole position were tested and optimized using a computational fluid dynamics (CFD) simulation package. In the optimized design, the variations of the pressure and the velocity of the squeezed resin at the die exit were improved by approximately 6.0% compared with the already accepted results of the reference die design.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2019.1597510