Optical transparent adhesive tape and preparation method for optical transparent adhesive tape

Abstract

The invention provides an optical transparent adhesive tape and a preparation method for the optical transparent adhesive tape. The optical transparent adhesive tape comprises an optical transparent adhesive tape layer and a first release film, wherein the first release film is pressed on one side of the optical transparent adhesive tape layer; a first bulge is arranged on one side of the first release film adjacent to the optical transparent adhesive tape layer; a first groove, the shape of which is as same as the shape of the first bulge, is formed on one side of the optical transparent adhesive tape layer; when the side of the optical transparent adhesive tape layer with the first groove is adhered to a display panel, air between the optical transparent adhesive tape layer and the display panel can flow along the first groove, so that air can be conveniently exhausted, the air bubbles between the optical transparent adhesive tape layer and the display panel can be correspondingly reduced and the optical performance of the display module can be promoted. After the optical transparent adhesive tape layer is bonded with the display panel, the optical transparent adhesive tape layer has certain liquidity and the optical transparent adhesive tape layer can be conformed to the surface of the display panel, so that the optical performance of the display module can be further promoted.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical transparent adhesive and a preparation method of the optical transparent adhesive. Background technique [0002] Optical Clear Adhesive (OCA) has the advantages of high light transmittance, high bonding strength, can be cured at room temperature, and has small curing shrinkage, so it is widely used in the bonding of touch panels and display panels. combine. The optically transparent adhesive includes an optically transparent adhesive layer, a first release film and a second release film, and the first release film and the second release film are respectively pressed on both sides of the optically transparent adhesive layer. In the bonding process of the panels, the first release film is first peeled off from the optically transparent adhesive layer, and then the display panel is bonded to the optically transparent adhesive layer, and then the second release film is p...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an optically transparent adhesive and a preparation method of the optically transparent adhesive, which is used to at least partially solve the problem of easy generation of air bubbles between the existing optically transparent adhesive layer and the display panel and touch panel. question

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