Method of screen printing

Patent metadata

Field	Value
Publication number	US-9724911-B2
Application number	US-201615333663-A
Country	US
Kind code	B2
Filing date	Oct 25, 2016
Priority date	Dec 1, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A screen printing apparatus includes a mask and a printing head. The mask has a first opening provided in a first region, and a second opening provided in a second region which is thicker than the first region. The printing head fills the first opening with a paste in a state where a substrate is in contact with the first region, and fills the second opening with the paste in a state where the substrate is in contact with the second region.

First claim

What is claimed is:

1. A method of screen printing by using a mask which has a first opening provided in a first region, a second opening provided in a second region which is thicker than the first region, and an intermediate region provided between the first region and the second region, said method comprising
supplying a paste to the intermediate region;
bringing a substrate into contact with the first region of the mask;
moving a printing head from the intermediate region to an end portion on the first region, and then moving the printing head from the end portion on the first region to the intermediate region, to fill a portion of the paste into the first opening and to keep a remaining portion of the paste on the intermediate region;
separating the substrate from the first region of the mask to form a layer of the paste corresponding to the first region on the substrate;
bringing the substrate into contact with the second region of the mask;
moving the printing head from the intermediate region to an end portion on the second region, and then moving the printing head from the end portion on the second region to the intermediate region, to fill at least a part of the remaining portion of the paste into the second opening;
separating the substrate from the second region of the mask to form a layer of the paste corresponding to the second region on the substrate.

2. The method of screen printing according to claim 1 ,
wherein the printing head includes a first squeegee and a second squeegee, and
wherein the first squeegee is moved from the intermediate region to the end portion on the first region, and then the second squeegee is moved from the end portion on the first region to the intermediate region, to fill the portion of the paste into the first opening and to keep the remaining portion of the paste on the intermediate region, and
wherein the second squeegee is moved from the intermediate region to the end portion on the second region, and then the first squeegee is moved from the end portion on the second region to the intermediate region, to fill the at least a part of the remaining portion of the paste into the second opening.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Mantani Masayuki

Classifications

• H05K2203/1545

  Continuous processing, i.e. involving rolls moving a band-like or solid carrier along a continuous production path · CPC title

• H05K2201/094

  Array of pads or lands differing from one another, e.g. in size, pitch or thickness; Using different connections on the pads · CPC title

• H05K3/1225

  Screens or stencils; Holders therefor · CPC title

• H05K3/1216 Primary

  by screen printing or stencil printing · CPC title

• B41P2215/114

  with means for displacing the article · CPC title