- Patent Title: High-precision shadow-mask-deposition system and method therefor
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Application No.: US15655544Application Date: 2017-07-20
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Publication No.: US11275315B2Publication Date: 2022-03-15
- Inventor: Amalkumar P. Ghosh , Fridrich Vazan , Munisamy Anandan , Evan Donoghue , Ilyas I. Khayrullin , Tariq Ali , Kerry Tice
- Applicant: eMagin Corporation
- Applicant Address: US NY Hopewell Junction
- Assignee: eMagin Corporation
- Current Assignee: eMagin Corporation
- Current Assignee Address: US NY Hopewell Junction
- Agency: Kaplan Breyer Schwarz, LLP
- Main IPC: G03F7/20
- IPC: G03F7/20 ; C23C14/04 ; C23C14/30 ; C23C14/50 ; C23C14/54

Abstract:
A direct-deposition system forming a high-resolution pattern of material on a substrate is disclosed. Vaporized atoms from an evaporation source pass through a pattern of through-holes in a shadow mask to deposit on the substrate in the desired pattern. The shadow mask is held in a mask chuck that enables the shadow mask and substrate to be separated by a distance that can be less than ten microns. Prior to reaching the shadow mask, vaporized atoms pass through a collimator that operates as a spatial filter that blocks any atoms not travelling along directions that are nearly normal to the substrate surface. Vaporized atoms that pass through the shadow mask exhibit little or no lateral spread after passing through through-holes and the material deposits on the substrate in a pattern that has very high fidelity with the through-hole pattern of the shadow mask.
Public/Granted literature
- US20170342543A1 High-Precision Shadow-Mask-Deposition System and Method Therefor Public/Granted day:2017-11-30
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