CN2720563Y

CN2720563Y - DVD optical disc structure

Info

Publication number: CN2720563Y
Application number: CN2003201045878U
Authority: CN
Inventors: 朱敬华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-11
Filing date: 2003-11-03
Publication date: 2005-08-24
Anticipated expiration: 2013-11-03

Abstract

The utility model relates to a DVD optical disc structure whose double surfaces can be read and written. The DVD optical disc comprises a first transparent substrate, a first dye layer and a first reflection layer, and wherein, the first dye layer is positioned between the first transparent substrate and the first reflection layer. Besides, the DVD optical disc comprises an adhesive layer which is positioned on the first reflection layer, a second reflection layer which is positioned on the adhesive layer, a second dye layer which is positioned on the second reflection layer, and a second transparent substrate which is positioned on the second dye layer. Compared with the prior art, the DVD optical disc structure of the utility model can record on double surfaces. Therefore, one DVD optical disc has the capacity as much as the capacity of two existing DVD optical discs, and the capacity is bigger than the capacity of a CD-ROM optical disc (approximately 650MB) and even bigger than the capacity of a hard disk (approximately 2GB to 4GB). In addition, the DVD optical disc can be classified with single-layer record and double-layer record.

Description

DVD CD-RW discsCD-RW structure

[affiliated technical field]

The utility model relates to a kind of CD-RW discsCD-RW structure, refers to a kind of DVD CD-RW discsCD-RW structure especially.

[background technology]

Digital versatile disc (Digital versatile Disk, DVD) be to develop out from existing C D-ROM, size is the same, but because of dwindling of digital recording spacing, change with recording mode, it is many to make that storable content increases, and it can be used to equally store and comprises music, video signal, and various types of numerical datas such as general computer archive data.The dynamic film of stored video signal adopts the digital compression technology of MPEG2 grade, and quality can surmount LD video disc, VIIS video tape, and existing VCD film laser disc; Stored message adopts the stereophony technology of Doby (DOBBY) AC-3 grade.

At present, single DVD CD-RW discsCD-RW can store a high-quality film more than 135 minutes, its capacity is 4.7GB, this capacity is equivalent to 7 times of at present general CD CD-RW discsCD-RW, size is identical with existing C D sheet, and DVD CD-RW discsCD-RW volume type comprises two layers of single face regeneration one deck and single face regeneration.The volume of information that single face regeneration one deck DVD CD-RW discsCD-RW writes down on a surface is 4.7GB.

See also Fig. 1, though two layers of DVD CD-RW discsCD-RW of single face regeneration also are record materials on a surface, it can utilize the data spacing to carry out double record, and the capacity of a slice DVD CD-RW discsCD-RW is 8.5GB like this.

Single face is only read the format record entity only can provide the single face record, and can't double-sided recording modes, and restriction only reads data and can't write record, and not only the memory body capacity can't increase, and more causes single face limited space problem.

[summary of the invention]

The utility model purpose is to provide a kind of DVD CD-RW discsCD-RW structure of two-sided read/write.

The purpose of this utility model is to realize like this, this DVD CD-RW discsCD-RW structure comprises first transparent substrates, first dye coating and first reflection horizon, wherein first dye coating is between first reflection horizon and first transparent substrates, in addition, this DVD CD-RW discsCD-RW also comprise a bonding coat that is positioned at first reflection horizon top, be positioned at the bonding coat top second reflection horizon, be positioned at second dye coating of top, second reflection horizon and be positioned at second transparent substrates of second dye coating top.

In the utility model, this first, second dye coating is regeneration one deck structure or regeneration two-layer structure.This DVD CD-RW discsCD-RW also can comprise first, second protective seam, and first protective seam is between the bonding coat and first reflection horizon, and second protective seam is between the bonding coat and second reflection horizon.The employing wavelength of described DVD CD-RW discsCD-RW is the laser instrument reading of data of 635-650nm.When first, second dye coating was regeneration one deck structure, described DVD CD-RW discsCD-RW capacity was 8.4-8.5GB.When first, second dye coating was the regeneration two-layer structure, described DVD CD-RW discsCD-RW capacity was 16.8-17GB.Described transparent resin base is made by polycarbonate (PC) usually, and described dye coating is made by cyanine (cyanine) or azo dyes (azo dye) usually.Described DVD CD-RW discsCD-RW thickness is 1.1-1.3mm.

Compared to prior art, but the utility model DVD CD-RW discsCD-RW structure double-sided recording modes, a DVD CD-RW discsCD-RW has the capacity of two existing DVD CD-RW discsCD-RW, and capacity surpasses CD-ROM CD-RW discsCD-RW (being about 650MB), even exceeds hard-disk capacity (about 2GB to 4GB).The classification that also can have individual layer and double-deck record to write in addition.

[description of drawings]

Fig. 1 is the synoptic diagram of prior art single face DVD CD-RW discsCD-RW;

Fig. 2 is the synoptic diagram of the utility model DVD CD-RW discsCD-RW.

[embodiment]

See also Fig. 2; DVD CD-RW discsCD-RW structure branch of the present utility model is set as upper and lower layer 2,3; wherein be provided with bonding coat 10 between this upper strata 2 and the lower floor 3; can be provided with or not be provided with first protective seam 21 on this bonding coat 10; and these first protective seam, 21 tops are provided with first reflection horizon 22; and first dye coating, 23, the first dye coatings, 23 tops are set above first reflection horizon 22 is first transparent substrates 24.This bonding coat can be provided with for 10 times or not be provided with second protective seam 31, and these second protective seam, 31 belows are provided with second reflection horizon 32, and second dye coating, 33, the second dye coatings, 33 belows are set below second reflection horizon 32 is second transparent substrates 34.Can form two-sided read/writable DVD CD-RW discsCD-RW by upper strata 2 with lower floor 3.In the utility model, the employing wavelength of described DVD CD-RW discsCD-RW is the laser instrument reading of data of 635-650nm.

First, second dye coating 23,33 can be regeneration one deck structure, also can be the regeneration two-layer structure.

Make DVD CD-RW discsCD-RW structure of the present utility model, on the mould of forming machine, load onto earlier the DVD stamper, and produce transparent resin base with manufacturing process such as injection mouldings, and then on resin base, form dye coating by spin coating proceeding, form metallic reflective coatings (reflection horizon) such as aluminium matter through method such as sputter at the signal face of resin base subsequently, be coated with in the above subsequently and form bonding coat with sticker.With make another DVD CD-RW discsCD-RW with quadrat method, then that two DVD CD-RW discsCD-RW are bonding, promptly get DVD CD-RW discsCD-RW of the present utility model.Also can between reflectance coating and bonding coat, increase by a protective seam in addition.Wherein, described transparent resin base is made by polycarbonate (PC) usually, and described dye coating is made by cyanine (cyanine) or azo dyes (azodye) usually.

Wherein adhesion process can be produced the product of different DVD forms, as can the DVD (R/W semi-manufacture) of the writable disposable DVD (DVD-R) of two 0.6mm thickness or rewritable is bonding, or a slice 0.6mm thickness DVD-R or R/W semi-manufacture and a slice DVD-5 or DVD-9 semi-manufacture is bonding.

The wherein bonding methods such as hot melt adhesive or UV curing glue that adopt are bonding.The hot melt adhesive adhering technique be with hot melt adhesive with the type of heating fusion after, in the mode of coating hot melt adhesive is applied to the back side of video disc, again two CD-RW discsCD-RW are fitted, through making two CD-RW discsCD-RW bonding after the cooling cooling.UV solidifies gluing being combined into ultraviolet cured adhesive is coated the DVD CD-RW discsCD-RW, two DVD CD-RW discsCD-RW is fitted again, and the irradiation through ultraviolet light makes the ultra-violet curing adhesive curing again.Be the DVD CD-RW discsCD-RW of DVD-R structure for the two sides, then should adopt hot melt adhesive bonding, destroy the physical property of DVD-R with the irradiation of avoiding ultraviolet light.

But DVD CD-RW discsCD-RW structure double-sided recording modes of the present utility model, the capacity that one DVD CD-RW discsCD-RW has two existing DVD CD-RW discsCD-RW, capacity surpasses CD-ROM CD-RW discsCD-RW (being about 650MB), even exceed hard-disk capacity (about 2GB to 4GB), promptly for the two-sided DVD CD-RW discsCD-RW of dye coating for regeneration one deck structure, its capacity can reach 8.5GB; And for the two-sided DVD CD-RW discsCD-RW of dye coating for the regeneration two-layer structure, its capacity can reach 17GB.The classification that also can have individual layer and double-deck record to write in addition.

Although the utility model is to describe with reference to specific embodiment, this description and not meaning that is construed as limiting the utility model.With reference to description of the present utility model, other distortion of the disclosed embodiments all can be expected for those skilled in the art.Therefore, such distortion can not break away from affiliated claim restricted portion and spirit.

Claims

1. DVD CD-RW discsCD-RW, it comprises first transparent substrates, first dye coating and first reflection horizon, wherein first dye coating is between first reflection horizon and first transparent substrates, it is characterized in that this CD-RW discsCD-RW also comprises a bonding coat that is positioned at first reflection horizon top, be positioned at second reflection horizon of bonding coat top, be positioned at second dye coating of top, second reflection horizon and be positioned at second transparent substrates of second dye coating top.

2. DVD CD-RW discsCD-RW according to claim 1 is characterized in that, this first, second dye coating is regeneration one deck structure.

3. DVD CD-RW discsCD-RW according to claim 1 is characterized in that, this first, second dye coating is the regeneration two-layer structure.

4. according to claim 2 or 3 described DVD CD-RW discsCD-RW, it is characterized in that this CD-RW discsCD-RW also comprises first, second protective seam, first protective seam is between the bonding coat and first reflection horizon, and second protective seam is between the bonding coat and second reflection horizon.

5. DVD CD-RW discsCD-RW according to claim 4 is characterized in that, the employing wavelength of described DVD CD-RW discsCD-RW is the laser instrument reading of data of 635-650nm.

6. DVD CD-RW discsCD-RW according to claim 5 is characterized in that, when first, second dye coating was regeneration one deck structure, described DVD CD-RW discsCD-RW capacity was 8.4-8.5GB.

7. DVD CD-RW discsCD-RW according to claim 5 is characterized in that, when first, second dye coating was the regeneration two-layer structure, described DVD CD-RW discsCD-RW capacity was 16.8-17GB.

8. DVD CD-RW discsCD-RW according to claim 5 is characterized in that, described transparent resin base is made by polycarbonate (PC) usually, and described dye coating is made by cyanine (cyanine) or azo dyes (azodye) usually.

9. DVD CD-RW discsCD-RW according to claim 8 is characterized in that, described DVD CD-RW discsCD-RW thickness is 1.1-1.3mm.