CN100447875C - Method for manufacturing optical information storage media - Google Patents

Method for manufacturing optical information storage media Download PDF

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Publication number
CN100447875C
CN100447875C CNB2005100920122A CN200510092012A CN100447875C CN 100447875 C CN100447875 C CN 100447875C CN B2005100920122 A CNB2005100920122 A CN B2005100920122A CN 200510092012 A CN200510092012 A CN 200510092012A CN 100447875 C CN100447875 C CN 100447875C
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China
Prior art keywords
optical information
media
manufacture method
layer
wall
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Expired - Fee Related
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CNB2005100920122A
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Chinese (zh)
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CN1917060A (en
Inventor
张汉宜
苏伟凯
杨晃祥
蔡正原
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Prodisc Technology Inc
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Prodisc Technology Inc
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Abstract

A method for preparing storage media of light information includes forming the first recording layer on the first base plate, utilizing a template to form a space layer with trenches on the first recording layer, sputter-plating the first intensifying layer on space layer forming the second recording layer on the first intensifying layer and joining the second base plate on the second recording layer.

Description

The manufacture method of media for storing optical information
Technical field
The present invention is about a kind of manufacture method of media for storing optical information, particularly about a kind of manufacture method of utilizing the media for storing optical information of photopolymerization processing procedure.
Background technology
Along with information and multimedia arriving from generation to generation, comprise that 3C (Computer, Communication, the Consumer electronics) product of computing machine, communication, consumer electronics also constantly increases for the storage density of Storage Media and the demand of capacity.Traditional Storage Media can be divided into two big classes haply, is respectively magnetic recording medium and media for storing optical information.Be to preponderate in the market with media for storing optical information, its comprise CD-ROM (CD-ROM), writable disposable type CD (CD-R), rewritable type CD (CD-RW), read-only type Video CD (DVD-ROM), writable disposable type Video CD (DVD-R), rewritable formula Video CD (DVD-RW, DVD+RW) and dynamic random memory Video CD (DVD-RAM) or the like.
In the face of more and more huge audio and video information amount, improve the volume of information of CD, be the target that industrial community is pursued always.And therefore DVD has occupied certain ratio because have the information storage capacity bigger than CD on light memory medium market.Present DVD has different record patterns, to two-sided bilayer (dual sidedual layer), their storage volume scope does not wait from 4.7GB to 17GB yet from single-surface single-layer (single side single layer), two-sided individual layer (dual sidesingle layer), single-surface double-layer (single side dual layer).
Single-surface double-layer DVD-R disc with 8.5GB capacity because capacity is big, is added the structure of writable disposable, also more and more is subjected to market and payes attention to.As shown in Figure 1, known single-surface double-layer DVD-R disc 10 mainly has one first substrate 11, one first recording layer 12, one first reflection horizon 13, a wall 14, one second recording layer 15, one second reflection horizon 16 in regular turn, reaches one second substrate 17.Wherein, first recording layer 12 and first reflection horizon 13 can be collectively referred to as one first record lamination (first recording stack, L 0); Second recording layer 15 and second reflection horizon 16 can be collectively referred to as one second record lamination (second recording stack, L 1).The first record lamination L 0Reach the second record lamination L 1Be respectively formed on the data face of first substrate 11, second substrate 17, and wall 14 is interposed in the first record lamination L 0Reach the second record lamination L 1Between.When data read, laser can pass first substrate 11 and focus on the first record lamination L 0, or pass wall 14 to focus on the second record lamination L 1
In the known technology, for single-surface double-layer DVD-R disc 10, photopolymerization processing procedure (Photo-Polymerization Process claims the 2P processing procedure again) is one of manufacture method commonly used, below just does one at the photopolymerization processing procedure and simply introduces:
Please refer to Fig. 2, it has on first substrate 11 of pre-rail groove at quarter (pre-grooved) in one, forms first recording layer 12, first reflection horizon 13, and light binding layer 14 ' successively.Then,, be pressed on the light binding layer 14 ', and after solidifying colloid through UV-irradiation, promptly form wall 14 masterplate (Stamper) S with prerecording ditch groove.After divesting masterplate S, on the wall 14 that forms groove, form second recording layer 15 and second reflection horizon 16 again.At last, behind second substrate 17 coating, one joint glue, engage with second reflection horizon 16, behind photocuring, form a knitting layer 18 again, bonding second reflection horizon 16 and second substrate 18 are promptly finished the making of single-surface double-layer DVD-R disc 10.
Wherein, the material that masterplate S is commonly used is cyclic olefin polymer (Cyclo Olefin Polymer, COP), because the easy acidifying of cyclic olefin polymer, usually transfer printing is greater than after 2000, easily be stained with more sticking fine particles on the masterplate S, metal particle for example, and make masterplate S carry out wall 14 when forming steps, hackly phenomenon can easily take place on wall 14 surfaces, and makes pre-fluting address (the Address In Pre-groove of disc, ADIP) error rate (ADIPError Rate, ADER) higher, thus, promptly can cause the disc quality to descend.
In addition, after wall 14 forms, promptly can carry out the coating of second recording layer 15, then can under high temperature, (about 85) toast about 30 minutes after coating is finished, to drive the solvent composition of second recording layer 15 away.The material that general wall 14 is selected for use, its glass transition temperature (T g) usually less than 85 ℃, and need that solvent is had certain resistance, when therefore in hot environment, driving solvent away, easily make and therefore also can cause adverse influence by wall 14 softening transforms for the quality of disc.
Add, the material of wall 14 still has several restrictions, and for example: the shrinkage factor after the colloid sclerosis is little, the residual stress replicability also little, wall 14 after the sclerosis wants high, have the chemical constitution of repelling each other with masterplate S surface the collocation of hydrophobic group (hydrophilic or) or the like.Therefore, can make the material of wall 14 select limited.
Because above-mentioned problem, this case inventor is because of in this, " manufacture method of media for storing optical information " of problem such as think urgently that a kind of ADER that can solve media for storing optical information is higher, the easy softening transform of wall, material spacer layer selection space are limited.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is for providing a kind of manufacture method of media for storing optical information, problems such as, wall easy softening transform higher with the ADER of the media for storing optical information that solves known technology.
For reaching above-mentioned purpose, manufacture method according to media for storing optical information of the present invention, comprise form one first record lamination on one first substrate, utilize a masterplate with form a wall with groove on the first record lamination, sputter one first strengthening layer on wall, this strengthening layer is used to protect this wall; Form one second the record lamination on first strengthening layer and engage one second substrate in second the record lamination on.
From the above, because of the manufacture method according to media for storing optical information of the present invention, sputter forms one first strengthening layer on wall.Compared to the prior art, the manufacture method of media for storing optical information of the present invention is in the photopolymerization processing procedure, utilize the mode of sputter to form the first fine and close strengthening layer, so can fill up the rough surface of wall originally,, and guarantee product quality with the ADER of reduction media for storing optical information.Add first strengthening layer and be formed at a side of wall, thus also can strengthen simultaneously the intensity of wall, and the protection wall makes its injury that is not subjected to high temperature and softening transform.In addition, first strengthening layer more can increase the resistance of wall for solvent, therefore, also makes the material selectivity of wall increase.
Description of drawings
Fig. 1 is a synoptic diagram, shows the structure of known single-surface double-layer DVD-R disc;
Fig. 2 is a synoptic diagram, shows known to photopolymerization processing procedure manufacturing single-surface double-layer DVD-R disc;
Fig. 3 is a process flow diagram, shows the manufacture method of the media for storing optical information of preferred embodiment of the present invention;
Fig. 4 is a synoptic diagram, shows the manufacture method of the media for storing optical information of preferred embodiment of the present invention;
Fig. 5 is another process flow diagram, shows the manufacture method of the media for storing optical information of preferred embodiment of the present invention; And
Fig. 6 is a synoptic diagram, shows the manufacture method of the media for storing optical information of preferred embodiment of the present invention.
Symbol description among the figure:
10 single-surface double-layer DVD-R discs
11 first substrates
12 first recording layers
13 first reflection horizon
14 walls
15 second recording layers
16 second reflection horizon
17 second substrates
18 knitting layers
30 media for storing optical information
31 first substrates
32 first recording layers
33 first reflection horizon
34 walls
34 ' light binding layer
35 first strengthening layers
36 second strengthening layers
37 second recording layers
38 second reflection horizon
39 second substrates
The S masterplate
S10 forms one first record lamination on one first substrate
S20 sputter one second strengthening layer is on the first record lamination
S30 utilizes a masterplate to have the wall of groove on the first record lamination to form one
S50 sputter one first strengthening layer is on wall
S70 forms one second record lamination on first strengthening layer
S90 engages one second substrate on the second record lamination
Embodiment
Hereinafter with reference to relevant drawings, the manufacture method according to the media for storing optical information of preferred embodiment of the present invention is described.
Please refer to Fig. 3, the manufacture method of media for storing optical information comprises: form one first record lamination in (S10) on one first substrate, utilize a masterplate with form a wall with groove in (S30) on the first record lamination, sputter one first strengthening layer in (S50) on the wall, form one second record lamination in (S70) on first strengthening layer and engage one second substrate on the second record lamination (S90).In the present embodiment, to write dispensable mould single-surface double-layer Video CD 30 be example to make one.Certainly, the manufacture method of media for storing optical information of the present invention also can be used for the media for storing optical information of other multilayer.
Please be simultaneously with reference to Fig. 3 and Fig. 4, in step S10, with the first record lamination L 0Be formed on first substrate 31.
First substrate 31 material of normal use is that (Polycarbonate PC), is characterized in having good optical character and chemical stability to polycarbonate.Certainly, the material of first substrate 31 also can be other transparent material.
In the present embodiment, the first record lamination L 0Have one first recording layer 32 and one first reflection horizon 33.The material of first recording layer 32 can be organic dyestuff or inorganic material.In the present embodiment, the material of first recording layer 32 is an organic dyestuff, an azo dyes for example, and form in the rotary coating mode.
First reflection horizon 33 is located on first recording layer 32, and first reflection horizon 33 is a semi-reflective layer (semi-reflective layer), and its material is simple metal or its alloy, for example is silver or silver alloy and aluminum or aluminum alloy, gold or billon or the like.And the generation type in first reflection horizon 33 normally is used to form sputter or the evaporation mode forms.
In step S30, utilize a masterplate S to write down lamination L in first 0On, formation one has the wall 34 of groove.That is to say, behind coating one deck colloid, utilize the prerecording ditch groove on the masterplate S earlier, cover to wall 34.After heating or rayed, make colloid solidify, can divest masterplate S and obtain having the wall 34 of groove.
In step S50, utilize the mode of sputter, first strengthening layer 35 is formed on the wall 34.Wherein, the material of first strengthening layer 35 is silicon nitride (silicon nitride, SiN x), monox (silicon oxide, SiO x), zinc sulphide-silicon dioxide (ZnS-SiO 2), titanium dioxide (titanium oxide, TiO x), tantalum oxide (tantalum oxide, TaO x), aluminium oxide (aluminumoxide, AlO x), zinc paste (zinc oxide, ZnO x), zirconia (zirconium oxide, ZrO x), germanium nitride (germanium nitride, GeN), titanium nitride (titanium nitride, TiN), magnesium oxide (magnesium oxide, MgO), silicon oxynitride (silicon oxynitride, SiON), contain silicon oxide carbide (carbon doped silicon oxide, SiOC), bismuth oxide (bismuth oxide, BiO x) or aluminium nitride (aluminum nitride, AlN x).And the refractive index of first strengthening layer 35 (refraction index) is approximately between 1.4～3.
In the present embodiment, formed first strengthening layer 35 of sputter can form the first fine and close strengthening layer 35 on the surface of wall 34, so can fill up the rough surface of wall 34 originally, with the ADER of reduction media for storing optical information 30, and guarantee product quality.Add first strengthening layer 35 and be formed at one of wall 34 side, thus also can strengthen simultaneously the intensity of wall 34, and protection wall 34 makes its injury that is not subjected to high temperature and softening transform.In addition, first strengthening layer 35 more can increase the resistance of wall 34 for solvent, therefore, also makes the material selectivity of wall 34 increase.
Please be simultaneously with reference to Fig. 5 and Fig. 6, in the present embodiment, the manufacture method of media for storing optical information more can comprise: sputter one second strengthening layer is on the first record lamination (S20).In step S20, utilize the mode of sputter, second strengthening layer 36 is formed at the first record lamination L 0On.Wherein, the material of second strengthening layer 36 can be silicon nitride (silicon nitride, SiN x), monox (silicon oxide, SiO x), zinc sulphide-silicon dioxide (ZnS-SiO 2), titanium dioxide (titanium oxide, TiO x), tantalum oxide (tantalum oxide, TaO x), aluminium oxide (aluminum oxide, AlO x), zinc paste (zinc oxide, ZnO x), zirconia (zirconium oxide, ZrO x), germanium nitride (germanium nitride, GeN), titanium nitride (titanium nitride, TiN), magnesium oxide (magnesium oxide, MgO), silicon oxynitride (silicon oxynitride, SiON), contain silicon oxide carbide (carbon doped silicon oxide, SiOC), bismuth oxide (bismuth oxide, BiO x) or aluminium nitride (aluminum nitride, AlN x).The refractive index of second strengthening layer 36 (refraction index) is approximately between 1.4～3.And the material of second strengthening layer 36 can be identical with first strengthening layer 35, also can be different.
That is to say that the both sides of wall 34 have first strengthening layer 35 and second strengthening layer 36 respectively.Thus, two sides of wall 34 all can be protected.
In step S70, on first strengthening layer 35, form one second record lamination L 1In the present embodiment, the second record lamination L 1Have one second recording layer 37 and one second reflection horizon 38 in regular turn.Wherein, the material of second recording layer 37 can be an organic dyestuff, for example is an azo dyes (AZO dye), forms through the rotary coating mode.And the material in second reflection horizon 38 can be semiconductor or conductor alloy firm.
In step S90, second substrate 39 is engaged in the second record lamination L 1On.Wherein, the material of second substrate 39 is identical with first substrate 31, is a transparency carrier.When engaging second substrate 39, can utilize a smooth solidity adhesive glue, after irradiation is handled, can second substrate 39 is fixing.
In sum, the manufacture method of media for storing optical information of the present invention, sputter forms one first strengthening layer on wall.Compared to the prior art, the manufacture method of media for storing optical information of the present invention is in the photopolymerization processing procedure, utilize the mode of sputter to form the first fine and close strengthening layer, so can fill up the rough surface of wall originally,, and guarantee product quality with the ADER of reduction media for storing optical information.Add first strengthening layer and be formed at a side of wall, thus also can strengthen simultaneously the intensity of wall, and the protection wall makes its injury that is not subjected to high temperature and softening transform.In addition, first strengthening layer more can increase the resistance of wall for solvent, therefore, also makes the material selectivity of wall increase.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the described claim scope its equivalent modifications of carrying out or change.

Claims (10)

1. the manufacture method of a media for storing optical information is characterized in that, comprises:
Form one first record lamination on one first substrate;
Utilize a masterplate to have the wall of groove on this first record lamination to form one;
Sputter one first strengthening layer is on this wall, and this first strengthening layer is used to protect this wall;
Form one second record lamination on this first strengthening layer; And
Engage one second substrate on this second record lamination.
2. the manufacture method of media for storing optical information as claimed in claim 1 is characterized in that, this first record lamination comprises one first recording layer and one first reflection horizon.
3. the manufacture method of media for storing optical information as claimed in claim 2 is characterized in that, this first reflection horizon is a semi-reflective layer.
4. the manufacture method of media for storing optical information as claimed in claim 1 is characterized in that, the material of this masterplate is polycarbonate, polymethylmethacrylate, cyclic olefin polymer, glass or nickel metal.
5. the manufacture method of media for storing optical information as claimed in claim 1, it is characterized in that the material of this first strengthening layer is silicon nitride, monox, zinc sulphide-silicon dioxide, titanium dioxide, tantalum oxide, aluminium oxide, zinc paste, zirconia, germanium nitride, titanium nitride, magnesium oxide, silicon oxynitride, contains silicon oxide carbide, bismuth oxide or aluminium nitride.
6. the manufacture method of media for storing optical information as claimed in claim 1 is characterized in that, the refractive index of this first strengthening layer is between 1.4～3.
7. the manufacture method of media for storing optical information as claimed in claim 1 is characterized in that, this second record lamination comprises one second recording layer and one second reflection horizon.
8. the manufacture method of media for storing optical information as claimed in claim 1 is characterized in that, also comprises:
Sputter one second strengthening layer is on this first record lamination, and this second strengthening layer is between this first record lamination and this wall, and this second strengthening layer is used to protect this wall.
9. the manufacture method of media for storing optical information as claimed in claim 8, it is characterized in that the material of this second strengthening layer is silicon nitride, monox, zinc sulphide-silicon dioxide, titanium dioxide, tantalum oxide, aluminium oxide, zinc paste, zirconia, germanium nitride, titanium nitride, magnesium oxide, silicon oxynitride, contains silicon oxide carbide, bismuth oxide or aluminium nitride.
10. the manufacture method of media for storing optical information as claimed in claim 8 is characterized in that, the refractive index of this second strengthening layer is between 1.4～3.
CNB2005100920122A 2005-08-16 2005-08-16 Method for manufacturing optical information storage media Expired - Fee Related CN100447875C (en)

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Application Number Priority Date Filing Date Title
CNB2005100920122A CN100447875C (en) 2005-08-16 2005-08-16 Method for manufacturing optical information storage media

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CN1917060A CN1917060A (en) 2007-02-21
CN100447875C true CN100447875C (en) 2008-12-31

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004164726A (en) * 2002-11-12 2004-06-10 Sony Disc Technology Inc Manufacturing method for optical record medium and optical recording medium
JP2004206854A (en) * 2002-08-05 2004-07-22 Victor Co Of Japan Ltd Optical information recording medium
CN1558412A (en) * 1996-06-28 2004-12-29 ��ķɭ��ý�幫˾ Multi-layer optical disk and its manufacturing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1558412A (en) * 1996-06-28 2004-12-29 ��ķɭ��ý�幫˾ Multi-layer optical disk and its manufacturing method
JP2004206854A (en) * 2002-08-05 2004-07-22 Victor Co Of Japan Ltd Optical information recording medium
JP2004164726A (en) * 2002-11-12 2004-06-10 Sony Disc Technology Inc Manufacturing method for optical record medium and optical recording medium

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