CN100411033C - Blue light light disk - Google Patents
Blue light light disk Download PDFInfo
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- CN100411033C CN100411033C CNB2005100888767A CN200510088876A CN100411033C CN 100411033 C CN100411033 C CN 100411033C CN B2005100888767 A CNB2005100888767 A CN B2005100888767A CN 200510088876 A CN200510088876 A CN 200510088876A CN 100411033 C CN100411033 C CN 100411033C
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Abstract
The invention relates to blue light compact disc. It includes a base board, a reflecting layer, one the first dielectric layer, a recording layer, one the second dielectric layer, and a covering layer. The base board sets reflecting layer which sets the first dielectric layer with 20nm-70nm optical thickness. The first dielectric layer sets the recording layer with 24nm-48nm optical thickness. The recording layer sets on the second dielectric layer with 40nm-140nm optical thickness. And the covering layer is set on the second dielectric layer. The invention can define each optical thickness of the blue light compact disc. Thus the produced compact disc is accorded with the standards, and has better production quality.
Description
Technical field
The present invention is about a kind of optical data storage media, especially in regard to a kind of Blu-ray Disc.
Background technology
Generally speaking, the employed optical source wavelength of burning optical data storage media by the ruddiness laser progress of 640nm～650nm to 405+/-the blue light laser of 5nm, and the purpose of wavelength decreases is to increase recording density in order to dwindle luminous point, makes optical data storage media can write down more information amounts.
Good and bad the closing of decision optical data storage media quality lain in shake deviation (Jitter), reflectivity (Reflectivity), and three factors of modulation ratio (Modulation rate).
With Blu-ray Disc (Blu-ray disc, be called for short BD), have in the specifications formulate that its shake deviate must be lower than 6.5%, reflectivity must be between 11%～24%, and modulation ratio must be higher than more than 0.4.Yet, influence shake deviation, reflectivity, and the reason of three factors of modulation ratio, main relevant with the optical thickness (optical thickness) of making each layer of Blu-ray Disc again, wherein, optical thickness is each layer thickness and its refractive index product.
So, utilize the metering system of a kind of power bracket (power margin), it utilizes the laser burning Blu-ray Disc of different capacity, shiver the respectively then measurement of dynamic deviation, thus, can find out the suitable recording power that is lower than shake deviate 6.5%, then, utilize the recording power of this scope, seek suitable each layer optical thickness scope of making Blu-ray Disc.
By this, to formulate the scope of each layer of Blu-ray Disc optical thickness, be beneficial to promote the making quality of Blu-ray Disc.
This shows that being produced in structure and the use of above-mentioned existing Blu-ray Disc obviously still has inconvenience and defective, and demand urgently further being improved.The problem that exists for the making that solves Blu-ray Disc, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the making of above-mentioned existing Blu-ray Disc exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of Blu-ray Disc of new structure, can improve the making of general existing Blu-ray Disc, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective of the making existence of existing Blu-ray Disc, and provide a kind of Blu-ray Disc of new structure, technical matters to be solved is to make it that a kind of Blu-ray Disc is provided, it defines each layer of Blu-ray Disc optical thickness scope, has good quality in the hope of Blu-ray Disc.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of Blu-ray Disc that the present invention proposes, it comprises: a substrate; One reflection horizon, it is arranged on this substrate; One first dielectric layer, it is arranged on this reflection horizon, and the optical thickness of this first dielectric layer is between 20nm～70nm; One recording layer, it is arranged on this first dielectric layer, and the optical thickness of this recording layer is between 24nm～48nm; One second dielectric layer, it is arranged on this recording layer, and the optical thickness of this second dielectric layer is between 40nm～140nm; And an overlayer, it is arranged on this second dielectric layer.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid Blu-ray Disc, wherein said tectal optical thickness is about 0.152mm～0.168mm.
Aforesaid Blu-ray Disc, the optical thickness of wherein said first dielectric layer is between 30nm～70nm.
Aforesaid Blu-ray Disc, the optical thickness of wherein said recording layer is between 30nm～42nm.
Aforesaid Blu-ray Disc, the optical thickness of wherein said second dielectric layer is between 50nm～130nm.
Aforesaid Blu-ray Disc, the material of wherein said first dielectric layer are niobium-nitrogen oxide (Nb-compound oxide nitride).
Aforesaid Blu-ray Disc, the material of wherein said second dielectric layer are niobium-nitrogen oxide (Nb-compound oxide nitride).
Aforesaid Blu-ray Disc, the material of wherein said recording layer are bismuth-germanium nitride (Bi-Genitride).
Aforesaid Blu-ray Disc, when it used the recording power burning of 6.3mW～7.0mW, its shake deviate then was lower than 6.5%.
Aforesaid Blu-ray Disc, wherein said Blu-ray Disc carry out burning under wavelength 405nm.
Aforesaid Blu-ray Disc, it is for can write record Blu-ray Disc once.
By technique scheme, Blu-ray Disc of the present invention has following advantage at least:
The present invention can define the suitable optical thickness of each layer of Blu-ray Disc, by this, makes the specification that Blu-ray Disc of the present invention can book up to specification be formulated, to reach good production quality.
In sum, the Blu-ray Disc of special construction of the present invention, it has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on product structure or function, have large improvement technically, and produced handy and practical effect, and the making of more existing Blu-ray Disc has the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a synoptic diagram, shows the Blu-ray Disc according to preferred embodiment of the present invention;
Fig. 2 is a curve map, shows according to the Blu-ray Disc of preferred embodiment of the present invention result with the power bracket metering system.
1: Blu-ray Disc 11: substrate
12: 13: the first dielectric layers in reflection horizon
14: 15: the second dielectric layers of recording layer
16: overlayer
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of Blu-ray Disc, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also shown in Figure 1ly, be Blu-ray Disc 1 of the present invention, it includes a substrate 11, a reflection horizon 12, one first dielectric layer 13, a recording layer 14, one second dielectric layer 15 for can write the once Blu-ray Disc of (write-once) of record, and an overlayer 16.
First dielectric layer 13, its material are niobium-nitrogen oxide (Nb-compound oxidenitride), and its mode with sputter is arranged on the reflection horizon 12.
Second dielectric layer 15, its material are niobium-nitrogen oxide (Nb-compound oxidenitride), and its mode with sputter is arranged on the recording layer 14.
At first, according to the experiment condition shown in following table 1, the second order multiple-pulse recording strategy (Two Level Multipulse Writing Strategy) of using lower-wattage to be fixed on 0.1mW is carried out burning to Blu-ray Disc 1 of the present invention, as shown in Figure 2, Blu-ray Disc 1 of the present invention is that 36Mbps and wavelength are that 405nm is when carrying out burning with burning speed, the result, the shake deviation minimum of Blu-ray Disc 1 of the present invention is 5.9%, this moment, the reflectivity of video disc was 20%, and modulation ratio is 0.53 (as the data of experimental group in the table 2 1), and when higher recording power was between 6.3mW and 7.0mW, Blu-ray Disc 1 book up to specification of the present invention was formulated the shake deviation and is lower than 6.5% specification.
Then, we utilize low burning power to be fixed on 0.1mW, and higher recording power defines the experiment of each layer of Blu-ray Disc optical thickness of the present invention under the situation of 6.3mW～7.0mW.
Table 1
| The electricity ejected wave is long | 405 |
| The numerical aperture of object lens | 0.85 |
| The bit interval | 0.1118μm |
| Data-switching speed | 36Mbps |
| Modulation codes | (1，7)RLL |
| Data tracks | The groove record |
| Addressing method | Swing |
| The wobble groove degree of depth | 29+/-1nm |
| The wobble groove width | 160+/-5nm |
| The wobble groove amplitude | 15nm |
| The wobble groove cycle | about 5μm |
See also following table 2 again, be experimental data of the present invention, first dielectric layer of the Blu-ray Disc of experimental group 1 wherein, recording layer, and second the dielectric layer optical thickness be set at 50nm respectively, 34.88nm, and 60nm, and first dielectric layer of the Blu-ray Disc of experimental group 2, recording layer, and the optical thickness of second dielectric layer is set at 60nm respectively, 39.24nm, and 110nm, so, seeing also shown in the table 3, the measured shake deviation of the Blu-ray Disc of experimental group 1 and experimental group 2 is respectively 5.9% and 6.1%, modulation ratio is respectively 0.53 and 0.47, and reflectivity is respectively 20% and 21%, all in the scope that book up to specification is formulated.
Table 2
Optical thickness (nm)
| First dielectric layer | Recording layer | Second dielectric layer | |
| |
50 | 34.88 | 60 |
| |
60 | 39.24 | 110 |
| |
50 | 30.52 | 32* |
| |
50 | 30.52 | 150* |
| Control group 3 | 40 | 19.62* | 50 |
| |
40 | 56.68* | 50 |
| Control group 5 | 14* | 32.70 | 70 |
| |
80* | 32.70 | 70 |
Annotate: indicate asterisk (*) and be the person of going beyond the scope
Otherwise, the Blu-ray Disc of control group 1 to 6 in please comparison sheet 2, set first dielectric layer respectively, recording layer, or the optical thickness of second dielectric layer is higher or lower than experimental group 1 or experimental group 2, so, please consult following table 3 again, the shake deviation that shows control group 1 to 6, modulation ratio, or the value of the reflectivity scope that book formulates that falls short of specifications, hence one can see that, we can summarize Blu-ray Disc of the present invention, the optical thickness of its first dielectric layer must be between 20nm～70nm, the optical thickness of recording layer must be between 24nm～48nm, and the optical thickness of second dielectric layer must further be said between 40nm～140nm, first dielectric layer, recording layer, and the preferred range of the second dielectric layer optical thickness then is respectively between 30nm～70nm, between 30nm～42nm, and between 50nm～130nm, by this, the shake deviation of Blu-ray Disc, modulation ratio, and the standard can book up to specification formulated of reflectivity.
Table 3
| Shake deviation (%) | Modulation ratio | Reflectivity (%) | |
| |
5.9 | 0.53 | 20 |
| |
6.1 | 0.47 | 21 |
| |
6.4 | 0.53 | 9* |
| |
6.2 | 0.35* | 22 |
| Control group 3 | 7.3* | 0.45 | 19 |
| |
6.4 | 0.37* | 12 |
| Control group 5 | 7.4* | 0.38* | 14 |
| |
7.5* | 0.43 | 16 |
Annotate: indicate asterisk (*) and be the person of going beyond the scope
In the present embodiment, the refractive index that the refractive index of first dielectric layer 13 is about 2, the refractive index of recording layer 14 is about 2.18, second dielectric layer 15 is about 2, and the refractive index of overlayer 16 is about 1.6, according to above-mentioned experimental result, the thickness that can know first dielectric layer by inference can be between 10nm～35nm, and optimum thickness is between 15nm～35nm, the thickness of recording layer can be between 11nm～22nm, and optimum thickness is between 14nm～19nm, the thickness of second dielectric layer can be between 20nm～70nm, and optimum thickness is between 25nm～65nm.
In addition, in the present embodiment, the refractive index of overlayer 16 is about 1.6, and its thickness is 0.1mm, knows by inference thus, and the optical thickness of overlayer 16 is about 0.16mm.According to experimental result, the thickness of overlayer 16 can be between 0.095mm～0.105mm, so the optical thickness of overlayer 16 is between 0.152mm～0.168mm.
From the above, first dielectric layer 13 of Blu-ray Disc 1 of the present invention, second dielectric layer 15 are material with niobium-nitrogen oxide, and be material with bismuth-germanium nitride with recording layer 14, utilize the measurement of power bracket (power margin) then earlier, find out suitable recording power between 6.3mW and 7.0mW, thus, in suitable recording power scope, can define the suitable optical thickness of Blu-ray Disc 1 each layer, by this, make the specification that Blu-ray Disc 1 of the present invention can book up to specification be formulated, to reach good production quality.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. Blu-ray Disc is characterized in that it comprises:
One substrate;
One reflection horizon, it is arranged on this substrate;
One first dielectric layer, it is arranged on this reflection horizon, and the optical thickness of this first dielectric layer is between 20nm～70nm;
One recording layer, it is arranged on this first dielectric layer, and the optical thickness of this recording layer is between 24nm～48nm;
One second dielectric layer, it is arranged on this recording layer, and the optical thickness of this second dielectric layer is between 40nm～140nm; And
One overlayer, it is arranged on this second dielectric layer,
Wherein when using the recording power burning of 6.3mW～7.0mW, the shake deviate of this Blu-ray Disc then is lower than 6.5%.
2. Blu-ray Disc according to claim 1 is characterized in that wherein said tectal optical thickness is 0.152mm～0.168mm.
3. Blu-ray Disc according to claim 1, the optical thickness that it is characterized in that wherein said first dielectric layer is between 30nm～70nm.
4. Blu-ray Disc according to claim 1, the optical thickness that it is characterized in that wherein said recording layer is between 30nm～42nm.
5. Blu-ray Disc according to claim 1, the optical thickness that it is characterized in that wherein said second dielectric layer is between 50nm～130nm.
6. Blu-ray Disc according to claim 1, the material that it is characterized in that wherein said first dielectric layer is niobium-nitrogen oxide.
7. Blu-ray Disc according to claim 1, the material that it is characterized in that wherein said second dielectric layer is niobium-nitrogen oxide.
8. Blu-ray Disc according to claim 1, the material that it is characterized in that wherein said recording layer are bismuth-germanium nitride.
9. Blu-ray Disc according to claim 1 is characterized in that wherein said Blu-ray Disc under wavelength 405nm, carries out burning.
10. Blu-ray Disc according to claim 1 is characterized in that it is to write record Blu-ray Disc once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100888767A CN100411033C (en) | 2005-07-29 | 2005-07-29 | Blue light light disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100888767A CN100411033C (en) | 2005-07-29 | 2005-07-29 | Blue light light disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1905030A CN1905030A (en) | 2007-01-31 |
| CN100411033C true CN100411033C (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100888767A Expired - Fee Related CN100411033C (en) | 2005-07-29 | 2005-07-29 | Blue light light disk |
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| Country | Link |
|---|---|
| CN (1) | CN100411033C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8435620B2 (en) * | 2011-09-09 | 2013-05-07 | Ritek Corporation | Optical recording medium and recording material for the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201225A (en) * | 1996-12-16 | 1998-12-09 | 东丽株式会社 | Optical recording medium |
| JP2002264510A (en) * | 2001-03-09 | 2002-09-18 | Ricoh Co Ltd | Optical information recording medium and its manufacturing method |
| CN1529885A (en) * | 2001-09-13 | 2004-09-15 | TDK�ɷ�����˾ | High-speed one-time writing-in optical recording medium, optical-recording method and apparatus |
| CN1615514A (en) * | 2001-11-29 | 2005-05-11 | Tdk股份有限公司 | Method of regulating reflectance of worm type optical recording medium and worm type optical recording medium |
-
2005
- 2005-07-29 CN CNB2005100888767A patent/CN100411033C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201225A (en) * | 1996-12-16 | 1998-12-09 | 东丽株式会社 | Optical recording medium |
| JP2002264510A (en) * | 2001-03-09 | 2002-09-18 | Ricoh Co Ltd | Optical information recording medium and its manufacturing method |
| CN1529885A (en) * | 2001-09-13 | 2004-09-15 | TDK�ɷ�����˾ | High-speed one-time writing-in optical recording medium, optical-recording method and apparatus |
| CN1615514A (en) * | 2001-11-29 | 2005-05-11 | Tdk股份有限公司 | Method of regulating reflectance of worm type optical recording medium and worm type optical recording medium |
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| Publication number | Publication date |
|---|---|
| CN1905030A (en) | 2007-01-31 |
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Granted publication date: 20080813 |