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Electronic assembly with fiducial marks for precision registration during subsequent processing steps

A technology of fiducial marks and electronic components, applied in the direction of electrical components, electrical components, printed circuit components, etc., can solve problems such as complex registration

Active Publication Date: 2016-04-06
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Maintaining registration between layers formed on a substrate becomes more complicated when the substrate is flexible or stretchable

Method used

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  • Electronic assembly with fiducial marks for precision registration during subsequent processing steps
  • Electronic assembly with fiducial marks for precision registration during subsequent processing steps
  • Electronic assembly with fiducial marks for precision registration during subsequent processing steps

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0120] The structure is roughly as figure 1 and figure 2 The printing device shown. The diameter of the printing roll is 12 cm. The roll has a predetermined pattern of connected diamonds in both the first zone and the second zone. On a stainless steel doctor blade, the three barriers were formed from a vinyl polysiloxane impression material commercially available as 3MESPE7302 EXPRESS from the 3M Company of St. Paul, MN, against rollers.

[0121] A water-soluble ink as disclosed in U.S. Patent 4,895,631 is dispensed onto a doctor blade in the first zone, while a UV-based ink commercially available as 9301 Opaque White UV Flexographic Ink from Nazda Ink Technologies, Shawnee, Kansas The cured water-insoluble ink is dispensed onto the doctor blade in the second zone. After a pause to allow the roller to be inked, printing begins on a substrate of conventional polyethylene terephthalate (PET) film, conveyed at a line speed of 2 m / min and at 1 lb / line inch (1.75 N / cm ) unde...

example 2

[0123]The film according to Example 1 was deposited by sputtering of a conventional type, such as a roll-to-roll vacuum chamber similar to the systems described in US Pat. Nos. 5,440,446 (Shaw et al.) and 7,018,713 (Padiyath et al.). A 40 nm thick layer of indium tin oxide (ITO) was deposited on the substrate in a first zone. The film is then rinsed with water so that the water soluble ink dissolves away in the first zone with a portion of the sputtered layer over the predetermined pattern. The fiducial marks printed with UV curable ink in the second zone remained on the film after rinsing with water. Predetermined patterns formed in this manner may have features that are less than 20 mil (0.5 mm) in size.

example 3

[0125] The structure is roughly as image 3 device shown. A first ink, commercially available as 9301 Opaque White UV Flexographic Ink from Nazda Ink Technologies, Inc., was dispensed in the first zone from the first ink stick onto the microflexographic printing roll. The microflexographic printing roll has a predetermined pattern of spaced apart rectangles in a first zone. A second ink, commercially available as 9319 Base Process Blue UV Flexographic Ink from Nazda Ink Technologies, Inc., was dispensed in the second zone from the second ink stick onto the microflexographic printing roll. The microflexographic roll has a predetermined pattern of spaced apart rectangles in the second zone. These inks were printed from an anilox roll onto a substrate of white paper coated with a silicone release liner and then coated with a thin layer of pressure sensitive adhesive, specifically with 90% by weight Random copolymer of isooctyl acrylate and 10% by weight acrylic acid. After pr...

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Abstract

An electronic assembly includes a substrate having in a first zone a low contrast first conductive pattern; a high contrast fiducial mark in a second zone of the substrate different from the first zone, wherein the fiducial mark and the first conductive pattern are in registration; and a second conductive pattern aligned with the first conductive pattern.

Description

Background technique [0001] The manufacture of articles, such as flexible electronic or optical components, may involve the application of layers of material deposited or formed on an elongated substrate or web. In particular, the pattern of material may be deposited in layers on an elongated substrate, such as a web, through a plurality of deposition steps. Some articles require precise registration of features applied on one or both sides of the substrate. [0002] In order to achieve accurate registration between layers, both transverse (crossweb) and longitudinal (downweb) orientation must be maintained as the substrate moves through the multiple manufacturing steps. Maintaining registration between layers formed on the substrate becomes more complicated when the substrate is flexible or stretchable. Some articles are made in multiple steps during which materials or processes are sequentially applied to the substrate, requiring precise positional registration of each pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00H05K13/00
CPCH05K1/0269H05K1/0393H05K1/097H05K3/048H05K2201/0145H05K2201/0154H05K2201/026H05K2201/10128H05K2203/1545H05K1/0283H05K3/1275H05K3/4679H05K2201/09918H05K2203/0143H05K1/0266H05K1/0296
Inventor 丹尼尔·J·泰斯安·M·吉尔曼金·B·索尔斯布里马修·S·斯泰肖恩·C·多兹米哈伊尔·L·佩库罗夫斯基
Owner 3M INNOVATIVE PROPERTIES CO