Rewritable optical disc

Abstract

A rewritable compact disc is provided, which comprises a first basal plate, a second basal plate, a cementing layer, a first recording layer, a first reflection layer, a second recording layer, a second reflection layer and a buffering layer. The second basal plate is positioned on the first basal plate; the cementing layer is arranged between the first basal plate and the second basal plate; the first recording layer is positioned between the first basal plate and the cementing layer; the first reflection layer is arranged between the first recording layer and the cementing layer; the second recording layer is configured between the second basal layer and the cementing layer; the second reflection layer is positioned between the second recording layer and the second basal plate; the buffering layer is arranged between the second basal plate and the second reflection layer.

Description

technical field [0001] The present invention relates to an optical storage medium, and in particular to a rewritable optical disc. Background technique [0002] Due to the advantages of large storage capacity, easy storage, long shelf life, low cost, and data not easily damaged, discs have gradually replaced traditional magnetic storage media and become one of the indispensable media for modern people. Due to the increasingly mature manufacturing technology of laser optoelectronic products and multimedia audio-visual compression technology, the development direction of optical storage media in the future is all towards high capacity and small size. Has gradually become the mainstream of the market. [0003] FIG. 1 is a schematic cross-sectional view of a conventional single-sided, double-layer rewritable optical disc. Referring to FIG. 1 , the optical disc 100 includes substrates 102 and 124 , recording layers 106 and 118 , reflective layers 110 and 122 , dielectric layers...

AI Technical Summary

Problems solved by technology

However, when the optical disc 100 is exposed to the air, the substrate 124 will be in contact with moisture from the outside, and the moisture will easily pass through the substrate 124 to the reflective layer 122 directly in contact with the substrate 124, causing the silver in the reflective layer 122 to oxidize. Phenomenon that affects the stability of the optical disc 100

That is to say, the longer the optical disc 100 is stored, the more serious the silver in the reflective layer 122 will be oxidized, thus degrading the signal of the optical disc 100

[0005] In addition, due to the poor adhesion between silver and the substrate 124, the substrate 124 and the reflective layer 122 are easily peeled off when the optical disc 100 is writing and recording, resulting in degradation of recording characteristics.

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