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Method for an ultrasonic flexible-tape transfer roller

IP.com Disclosure Number: IPCOM000019518D
Publication Date: 2003-Sep-17
Document File: 2 page(s) / 187K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for an ultrasonic flexible-tape transfer roller. Benefits include improved manufacturing environment and improved performance.

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Method for an ultrasonic flexible-tape transfer roller

Disclosed is a method for an ultrasonic flexible-tape transfer roller. Benefits include improved manufacturing environment and improved performance.

Background

         Conventional flexible (flex) tape equipment is designed for a tape thickness greater than 25 µm. However, flex tape has become thinner. As a result, this thin-tape substrate can come off the guide roller and deform during wet processing (see Figure 1).

         When the tape substrate drifts from the guide roller, a micro air bubble can form between the tape and the guide roller. When this condition occurs, the tape moves forward in unexpected directions. The condition is more extreme with vertical tape substrate transfer due to gravity (see Figure 2).

         This problem is conventionally solved by narrowing the pitch between guide rollers and controlling the tension between the drive and receive guide rollers. These adjustments are significant modifications to the apparatus.

Description

         The disclosed method is the addition of vibrating guide rollers to the reel-to-reel tape transfer process. Guide rollers are added to the tape path in areas of horizontal motion (see Figure 3). These rollers are ultrasonically vibrated to provide additional tension and control (see Figure 4).

Advantages

         The disclosed method provides advantages, including:

•         Improved manufacturing environment due to the prevention of tape deformation

•         Improved performance due to the improved control of the...