Reel-to-reel exposure device for substrates

Abstract

The invention relates to a reel-to-reel exposure device for substrates. The reel-to-reel exposure device for substrates comprises a roller, a transmission wheel set and an exposure system; a substrate is driven by the transmission wheel set to be attached to the circumferential surface of the roller to rotate and complete exposure; and the reel-to-reel exposure device further comprises a discharging device, a collecting device and a temporary storage device which are used for winding or / and unwinding the substrate. The substrate of the reel-to-reel exposure device forms negative pressure through vacuum adsorption holes distributed on the roller, is effectively attached to the circumferential surface of the roller and is aligned and exposed, so that the flatness of the substrate on the roller is increased, and the alignment and exposure effects of the substrate are effectively improved; the temporary storage device can be reversed after winding the substrate with the exposed first surface, and the substrate with the exposed first surface is unwound and conveyed to the roller again to complete exposure of the second surface, so that a set of alignment device and exposure device is saved.

Description

technical field [0001] The invention relates to the technical field of direct writing exposure, in particular to a roll-to-roll exposure device. Background technique [0002] With the development of communication technology, in order to meet the needs of users, the functions of mobile terminals are becoming more and more diversified, which brings great convenience to people's life. Among them, compared with printed circuit boards, flexible circuit boards have the characteristics of lighter weight, higher flexibility, shorter assembly hours, and smaller volume. In order to obtain lighter products, increase the integration of devices in limited spaces and improve Assembly efficiency, more and more flexible circuit boards are used to replace printed circuit boards in mobile terminals, especially double-sided flexible circuit boards have broader application prospects. [0003] The exposure device is a kind of equipment that must be used in the production process of flexible cir...

AI Technical Summary

Problems solved by technology

At present, roll-to-roll exposure devices are widely used in the market, but most of them are traditional film exposure, which has high cost, low production capacity and environmental pollution.

At present, there are a few laser direct writing exposure equipment in the market that are used in the field of roll-to-roll exposure, but they are all based on the movement platform of the printed circuit board direct writing exposure equipment. The flexible circuit board is transported with the movement platform, and the platform supports the flexible circuit. The board cannot completely solve the problem of unevenness of the flexible circuit, and pulling it back and forth for a large distance will cause the flexible circuit board to be deformed by force, resulting in poor exposure effect and unable to meet the application requirements

Furthermore, when exposing the roll-to-roll double-sided flexible circuit board, the existing mainstream technology is to expose the two sides of the flexible circuit board with two sets of exposure systems, which increases the equipment cost and complicates the process.

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