US 12,263,693 B2
Pattern transfer sheets and methods employing a releasing layer and/or paste mixtures
Eyal Cohen, Kfar-Saba (IL); and Natali Cohen, Ramat Gan (IL)
Assigned to Wuhan DR Laser Technology Corp, . LTD, Wuhan (CN)
Filed by Wuhan Dr Laser Technology Corp., Ltd., Wuhan (CN)
Filed on Oct. 24, 2022, as Appl. No. 17/971,689.
Claims priority of application No. 202111233805.7 (CN), filed on Oct. 22, 2021.
Prior Publication US 2023/0129519 A1, Apr. 27, 2023
Int. Cl. B41M 5/46 (2006.01); B41M 5/382 (2006.01); B41M 5/392 (2006.01); B41M 5/41 (2006.01); B41M 5/44 (2006.01); H05K 3/20 (2006.01)
CPC B41M 5/465 (2013.01) [B41M 5/38214 (2013.01); B41M 5/392 (2013.01); B41M 5/41 (2013.01); B41M 5/44 (2013.01); H05K 3/207 (2013.01); B41M 2205/08 (2013.01); B41M 2205/30 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pattern transfer method comprising:
coating, internally with a coating solution, a plurality of trenches arranged in a specified pattern on a pattern transfer sheet to form a dried coating layer inside each trench of the plurality of trenches, wherein the coating solution is applied only within the trenches,
filling printing paste into the plurality of trenches, on top of the dried coating layer,
releasing the printing paste from the plurality of trenches onto a receiving substrate through illumination by a laser beam to yield transferred paste lines having the specified pattern on the receiving substrate,
wherein the dried coating layer disintegrates upon the illumination, to enhance the releasing of the printing paste, and
optionally cleaning the receiving substrate by removing disintegration products of the dried coating layer therefrom.