CN103117070A - One-time write-in-type two-sided disc based on copper nitride film and manufacturing method thereof - Google Patents
One-time write-in-type two-sided disc based on copper nitride film and manufacturing method thereof Download PDFInfo
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- CN103117070A CN103117070A CN2013100053502A CN201310005350A CN103117070A CN 103117070 A CN103117070 A CN 103117070A CN 2013100053502 A CN2013100053502 A CN 2013100053502A CN 201310005350 A CN201310005350 A CN 201310005350A CN 103117070 A CN103117070 A CN 103117070A
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Abstract
The invention discloses a one-time write-in-type two-sided disc based on a copper nitride film and a manufacturing method of the one-time write-in-type two-sided disc. The two-sided disc is mainly divided into five layers which sequentially include a first substrate (1), a first recording layer (2), an absorption layer (3), a second recording layer (4) and a second substrate (5), wherein the first substrate (1) and the second substrate (5) are respectively the first layer and the fifth layer of the disc, the first recording layer (2) and the second recording layer (4) are respectively the second layer and the fourth layer of the disc, and the absorption layer (3) is the third layer of the disc, is an area used for absorbing excess infrared and absorbs the excess infrared penetrating the first recording layer (2) and the second recording layer (4). According to the one-time write-in-type two-sided disc based on the copper nitride film and the manufacturing method of the one-time write-in-type two-sided disc, the low-temperature decomposition characteristic of copper nitride is applied to the disc, the structure of the disc is modified, and therefore the one-time write-in-type two-sided disc based on the copper nitride film is novel and innocuous.
Description
Technical field
The invention belongs to field of optical storage technology, it is a kind of write-once type both-sided optical disc based on copper nitride film, use copper nitride film to serve as the recording layer of write-once type both-sided optical disc, this material can issue solution estranged in laser action and cause that optical property changes, thereby reaches the purpose of information storage.
Background technology
Optical storage is by the medium influence on optical memory surface, modal optical memory is CD such as CD, DVD etc., rough pitting is arranged on CD media, different reflections is arranged above illumination is mapped to, then the digital signal that is converted into " 0 ", " 1 " has just become optical storage.Laser beam shines on medium after focusing on through light path system, object lens, and medium is gone out small rut by laser ablation.On medium, ablated and two states correspondence not ablation two kinds of different binary data.These change of properties of recognition memory cell are namely read stored data.
Whether CD is reliable and stable, and recording medium is crucial.At present, the recording medium of CD mainly adopts organic dyestuff, and CD is when carrying out burning, and laser will carry out burning to the organic dyestuff that is coated with on substrate, direct burning becomes " hole " one by one, " hole " is arranged like this and do not have the state in " hole " just to form the signal of " 0 " and " 1 ".This a series of " 0 ", " 1 " signal have just formed binary code, thereby represent specific data.Yet at present, the weak point of CD is, mainly adopts the individual layer recording medium, and the storage data capacity is very limited; Organic dyestuff often all has certain toxicity, processing and all inevitably can working the mischief and to environment to human body when processing organic dyestuff.
Copper nitride (Cu
3N) be a kind of non-toxic material with special construction and performance, be subject in recent years extensive concern.Copper nitride film is tan semitransparent thin film.It is 95% in humidity, temperature is to place under the condition of 60 ℃ after 15 months not find to have any optical property to change with originally comparing.The copper nitride crystal is in metastable state or unstable state phase, and it just can decompose (2Cu in 360 ℃ of left and right situations in a vacuum
3N=6Cu+N
2).
We carry out performance study to the copper nitride film that has decomposed, the reflectance spectrum of the copper that after the thermal decomposition of discovery copper nitride, resulting copper and direct sputter obtain is very close, and the reflectance ratio copper of copper nitride is little, be subject to wavelength approximately during the infrared radiation of 800nm reflection coefficient larger difference is arranged, we know that CD is to rely on the different reflection coefficient of dielectric surface, come reading out data with the infrared ray of about 800nm, and copper nitride film just there be the reflectivity more much lower than the metallic copper after its thermal decomposition near 800nm.
Copper nitride is stable performance at normal temperatures, has low heat decomposition temperature, and non-toxic inexpensive.It just can resolve into copper simple substance and realize low temperature metalization in 360 ℃ of left and right in a vacuum, and the ultrared reflectivity in 800nm left and right and decomposition product Cu are had significant difference, and this makes it to have tempting application potential in field of optical storage technology.
Summary of the invention
Technical matters:The problem to be solved in the present invention is to provide a kind of write-once type both-sided optical disc and manufacture method thereof based on copper nitride film, this low temperature thermal decomposition characteristic of copper nitride is applied in CD, and the structure to CD improves, and produces the brand-new and nontoxic write-once type both-sided optical disc based on copper nitride.
Technical scheme:Write-once type both-sided optical disc based on copper nitride film of the present invention mainly is divided into five layers, comprises successively first substrate, the first recording layer, absorption layer, the second recording layer and second substrate;
First substrate and second substrate are respectively ground floor and the layer 5s of CD, and they are carriers of CD other parts, are also the physical enclosure of whole CD;
The first recording layer and the second recording layer are respectively the second layer of CD and the 4th layer, the place of imprinting signal when they are burning, utilize the disposable optical storage media of copper nitride film of magnetically controlled sputter method preparation, because the reflectivity before and after burning is different, when reading the signal of different length, variation by reflectivity forms 0 and 1 signal, so as to reading information;
Absorption layer is the 3rd layer of CD, and it is to absorb unnecessary ultrared zone, will be through the unnecessary infrared ray absorbing of the first recording layer and the second recording layer.
The manufacture method of the write-once type both-sided optical disc based on copper nitride film of the present invention is specially:
A. selecting the strong transparent material of stability is substrate, utilizes magnetron sputtering coating method to prepare two parts of substrates that are coated with copper nitride film;
B. after completing previous step, required same size and shape are processed in two parts of substrates that are coated with copper nitride film, and the substrate of one of them is as first substrate, and copper nitride film is as the first recording layer, other substrate is as second substrate, and copper nitride film is as the second recording layer;
C. after above-mentioned machining, to have the Material Filling of good absorption infrared capable between the first recording layer and the second recording layer, and they are pasted, it is clipped between the first recording layer and the second recording layer as absorption layer, will be through the infrared ray absorbing of copper nitride film recording layer;
D. obtain the write-once type both-sided optical disc based on copper nitride film after above-mentioned processing is all completed.
In step a, utilizing magnetron sputtering coating method to prepare two parts of substrates that are coated with copper nitride film, is to be the vacuum chamber of 1Pa in vacuum tightness, take Cu as target, and N
2For reacting gas preparation, with its taking-up, then it is processed as substrate and recording layer after it is naturally cooling.
The transparent material that described stability is strong is K9 glass, quartz glass or PC material.
The material of described good absorption infrared capable is infrared absorption pigment.
The method of the write-once type both-sided optical disc record data based on copper nitride film of the present invention: the different laser beam after processing through computing machine respectively see through first substrate from tow sides and shine copper nitride film the first recording layer and see through second substrate and shine on copper nitride film the second recording layer after light path system, object lens focus on, the copper nitride of illuminated position is reaching approximately about 300 ℃-360 ℃ generation pyrolysis, resolve into metallic copper, decompose and undecomposed two states just correspondence two kinds of different binary data.
The method of the write-once type both-sided optical disc reading out data based on copper nitride film of the present invention: adopt 780nm-850nm left and right infrared radiation, light shines above copper nitride film recording layer one and by substrate two by substrate one from tow sides respectively and shines above copper nitride film the second recording layer, the first recording layer and the second recording layer are respectively with light reflection, double-edged receiver receives the light of reflection and the reflectivity different according to it, be converted into 0,1 digital signal, complete data and read.
Beneficial effect:The present invention has the following advantages:
1. nontoxic to human body and environmental friendliness.Material requested and manufacture process are all nontoxic, can not work the mischief and to environment to human body.
2. high optical contrast and stability.Before and after laser action, difference in reflectivity is obvious, but optical property is difficult for changing under normal circumstances.
3. two-sided storage is larger than the capacity of normal optical disk, and two-sided reading rate is faster.
4. disposable recording protected data.Can only carry out once record to data, protected data prevents from being modified.
5. cost of manufacture is low.The equal price of whole manufacture process material requested is cheap.
6. simple in structure.Manufacture process is simple, and is not high to equipment requirement, is easy to extensive manufacturing.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Have in figure: first substrate 1, the second recording layer 2, absorption layer 3, the second recording layers 4, second substrate 5.
Embodiment
Write-once type both-sided optical disc based on copper nitride film mainly is divided into five layers, comprises successively first substrate, the first recording layer, absorption layer, the second recording layer and second substrate.
First substrate and second substrate: they are respectively ground floor and the layer 5 of CD, they are carriers of CD other parts, and the material of its use is answered good stability, avirulence, transparent, in whole CD, they are not only carrier, especially the physical enclosure of whole CD;
The first recording layer and the second recording layer: they are respectively the second layer of CD and the 4th layer, the place of imprinting signal when they are burning, utilize the disposable optical storage media of copper nitride film of magnetically controlled sputter method preparation, because the reflectivity before and after burning is different, when reading the signal of different length, variation by reflectivity forms 0 and 1 signal, so as to reading information;
Absorption layer: this is the 3rd layer of CD, and it is to absorb unnecessary ultrared zone, will be through the unnecessary infrared ray absorbing of the first recording layer and the second recording layer.
Manufacture method of the present invention is:
(1) selecting strong transparent material such as K9 glass, quartz glass or the PC material etc. of stability is substrate, utilizes the method for magnetron sputtering to prepare two parts of copper nitride films.
(2) after completing previous step, required same size and shape are processed in two parts of substrates that are coated with copper nitride film, and the substrate of one of them is as first substrate, and copper nitride film is as the first recording layer, other substrate is as second substrate, and copper nitride film is as the second recording layer.
(3) after above-mentioned machining, to have the Material Filling of good absorption infrared capable between the first recording layer and the second recording layer, and they are pasted, it is clipped between the first recording layer and the second recording layer as absorption layer, will be through the infrared ray absorbing of copper nitride film recording layer.
(4) after above-mentioned processing is all completed, obtain the write-once type both-sided optical disc based on copper nitride film.
One of key of the present invention is to utilize the method for magnetron sputtering, in substrate take Cu as target, N
2Prepare copper nitride film for reacting gas, be beneficial to large-scale production.
Another crucial part of the present invention is the method for record data: the different laser beam after processing through computing machine respectively see through first substrate from tow sides and shine copper nitride film the first recording layer and shine on copper nitride film the second recording layer through second substrate after light path system, object lens focus on, the copper nitride of illuminated position is reaching approximately about 300 ℃-360 ℃ generation pyrolysis, resolve into metallic copper, decompose and undecomposed two states just correspondence two kinds of different binary data.
The present invention also has a crucial part to be the method for reading out data: adopt 780nm-850nm left and right infrared radiation, light shines above copper nitride film the first recording layer and by second substrate by first substrate from tow sides respectively and shines above copper nitride film the second recording layer, the first recording layer and the second recording layer are respectively with light reflection, double-edged receiver receives the light of reflection and the reflectivity different according to it, be converted into 0,1 digital signal, complete data and read.
The present invention is described in detail below in conjunction with example, and the present invention is not limit by these examples.
Example 1
(1) select thickness be the glass plate of 1.2mm as substrate, adopt the reaction direct current magnetron sputtering process, two parts of copper nitride films of preparation on substrate of glass.The target of sputter is 99.999% high purity copper target, and the diameter of copper target is that 50mm, thickness are 5mm.Distance between target and substrate is 60mm, and working gas is 99.99% high pure nitrogen and 99.99% high-purity argon gas, and the service property (quality) flowmeter is controlled respectively.
(2) substrate before putting into vacuum chamber, is used respectively acetone, alcohol ultrasonic cleaning, before sputter, gas pressure in vacuum is extracted into lower than 5 * 10
-4Pa, and be filled with argon gas pre-sputtering 3min to clean target surface.Pass into subsequently nitrogen, control total sputtering pressure at 2Pa, the ratio of controlling nitrogen and argon gas is 3/1, and sputtering power is controlled at 120w, and base reservoir temperature is 100 ℃ and prepares copper nitride film.
(3) do not take out immediately after copper nitride film preparation is completed, wait the sputtering chamber temperature to be down to taking-up again after room temperature.
(4) two parts of substrate of glass that are coated with copper nitride film will taking out are processed, and making its diameter is 40mm, and middle porose, internal diameter is 15mm, and is rounded.The substrate of glass of one of them is as first substrate, and copper nitride film is as the first recording layer, and other substrate of glass is as second substrate, and copper nitride film is as the second recording layer.
(5) after above-mentioned machining, with the infrared absorption pigment uniform filling that buys in advance between the first recording layer and the second recording layer, and they are pasted, it is clipped between the first recording layer and the second recording layer as absorption layer, will be through the infrared ray absorbing of copper nitride film recording layer.
(6) after above-mentioned processing is all completed, obtain the write-once type both-sided optical disc based on copper nitride film.
(7) during record data, the data of required record are processed through computing machine, adopted the method for laser beam irradiation that data recording is got off.Different laser beam after processing through computing machine respectively see through substrate one from tow sides and shine copper nitride film the first recording layer and shine on copper nitride film the second recording layer through second substrate after light path system, object lens focus on, the copper nitride of illuminated position is reaching approximately about 300 ℃-360 ℃ generation pyrolysis, resolve into metallic copper, decompose and undecomposed two states just correspondence two kinds of different binary data.
(8) during reading out data, adopt 780nm-850nm left and right infrared radiation, light shines above copper nitride film the first recording layer and by second substrate by first substrate from tow sides respectively and shines above copper nitride film the second recording layer, the first recording layer and the second recording layer are respectively with light reflection, double-edged receiver receives the light of reflection and the reflectivity different according to it, be converted into 0,1 digital signal, complete data and read.
Claims (5)
1. write-once type both-sided optical disc based on copper nitride film, its feature comprises first substrate (1), the first recording layer (2), absorption layer (3), the second recording layer (4) and second substrate (5) successively mainly being divided into five layers for this both-sided optical disc;
First substrate (1) and second substrate (5) are respectively ground floor and the layer 5 of CD, and they are carriers of CD other parts, are also the physical enclosure of whole CD;
The first recording layer (2) and the second recording layer (4) are respectively the second layer of CD and the 4th layer, the place of imprinting signal when they are burning, utilize the disposable optical storage media of copper nitride film of magnetically controlled sputter method preparation, because the reflectivity before and after burning is different, when reading the signal of different length, variation by reflectivity forms 0 and 1 signal, so as to reading information;
Absorption layer (3) is the 3rd layer of CD, and it is to absorb unnecessary ultrared zone, will be through the unnecessary infrared ray absorbing of the first recording layer (2) and the second recording layer (4).
2. the manufacture method of the write-once type both-sided optical disc based on copper nitride film as claimed in claim 1 is characterized in that the preparation method is specially:
A. selecting the strong transparent material of stability is substrate, utilizes magnetron sputtering coating method to prepare two parts of substrates that are coated with copper nitride film;
B. after completing previous step, required same size and shape are processed in two parts of substrates that are coated with copper nitride film, the substrate of one of them is as first substrate (1), copper nitride film is as the first recording layer (2), other substrate is as second substrate (5), and copper nitride film is as the second recording layer (4);
C. after above-mentioned machining, to have the Material Filling of good absorption infrared capable between the first recording layer (2) and the second recording layer (4), and they are pasted, it is clipped between the first recording layer (2) and the second recording layer (4) as absorption layer (3), will be through the infrared ray absorbing of copper nitride film recording layer;
D. obtain the write-once type both-sided optical disc based on copper nitride film after above-mentioned processing is all completed.
3. the manufacture method of the write-once type both-sided optical disc based on copper nitride film as claimed in claim 2, it is characterized in that in step a, utilize magnetron sputtering coating method to prepare two parts of substrates that are coated with copper nitride film, is to be the vacuum chamber of 1Pa in vacuum tightness, take Cu as target, N
2For reacting gas preparation, with its taking-up, then it is processed as substrate and recording layer after it is naturally cooling.
4. the manufacture method of the write-once type both-sided optical disc based on copper nitride film as claimed in claim 2, is characterized in that the strong transparent material of described stability is K9 glass, quartz glass or PC material.
5. the manufacture method of the write-once type both-sided optical disc based on copper nitride film as claimed in claim 2, the material that it is characterized in that described good absorption infrared capable is infrared absorption pigment.
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| CN2013100053502A CN103117070A (en) | 2013-01-08 | 2013-01-08 | One-time write-in-type two-sided disc based on copper nitride film and manufacturing method thereof |
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| CN2013100053502A CN103117070A (en) | 2013-01-08 | 2013-01-08 | One-time write-in-type two-sided disc based on copper nitride film and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103596373A (en) * | 2013-11-07 | 2014-02-19 | 南京邮电大学 | Integrated circuit plate manufacturing method based on copper nitride film |
| CN106535502A (en) * | 2016-10-17 | 2017-03-22 | 奥士康精密电路（惠州）有限公司 | Electroplating method of high-aspect ratio circuit board |
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| JPH09259470A (en) * | 1996-03-21 | 1997-10-03 | Toshiba Corp | Laminated information recording medium |
| JP2007080312A (en) * | 2005-09-12 | 2007-03-29 | Ricoh Co Ltd | Optical recording medium and its manufacturing method |
| CN100472626C (en) * | 2003-03-27 | 2009-03-25 | 松下电器产业株式会社 | Optical information recording medium, method of generating the medium and method and equipment for using the medium recording information |
| CN102820043A (en) * | 2012-07-24 | 2012-12-12 | 南京邮电大学 | Write once read many (WORM) compact disc based on copper nitride film and manufacture method thereof |
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2013
- 2013-01-08 CN CN2013100053502A patent/CN103117070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09259470A (en) * | 1996-03-21 | 1997-10-03 | Toshiba Corp | Laminated information recording medium |
| CN100472626C (en) * | 2003-03-27 | 2009-03-25 | 松下电器产业株式会社 | Optical information recording medium, method of generating the medium and method and equipment for using the medium recording information |
| JP2007080312A (en) * | 2005-09-12 | 2007-03-29 | Ricoh Co Ltd | Optical recording medium and its manufacturing method |
| CN102820043A (en) * | 2012-07-24 | 2012-12-12 | 南京邮电大学 | Write once read many (WORM) compact disc based on copper nitride film and manufacture method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103596373A (en) * | 2013-11-07 | 2014-02-19 | 南京邮电大学 | Integrated circuit plate manufacturing method based on copper nitride film |
| CN106535502A (en) * | 2016-10-17 | 2017-03-22 | 奥士康精密电路（惠州）有限公司 | Electroplating method of high-aspect ratio circuit board |
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Application publication date: 20130522 |