CN1330368A - Recordable optical record medium-membrane and its matched material - Google Patents
Recordable optical record medium-membrane and its matched material Download PDFInfo
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- CN1330368A CN1330368A CN00109664A CN00109664A CN1330368A CN 1330368 A CN1330368 A CN 1330368A CN 00109664 A CN00109664 A CN 00109664A CN 00109664 A CN00109664 A CN 00109664A CN 1330368 A CN1330368 A CN 1330368A
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Abstract
A recordable membrane as optical record medium and its matched materials are disclosed. Under the radiation of recording light beam, the transparent layer and the reflection layer of said membrane are heated and take part in reaction to become alloy/compound, which is a semi-transparent area with decreased thickness, changed optical constant, changed reflection intensity and changed polarizing angle. Its advantages are full optical domain, high density, high resolution, high speed and high compatibility.
Description
The present invention relates to optical recording media, particularly relate to the recordable optical record medium-membrane and the matching materials thereof of a kind of full light territory, high density, high-res, high power speed and high-compatibility.
The recordable optical recording media has record convenience and permanent keeping quality concurrently.Can be applicable to electronic publishing, multimedium information recording or need to back up in a large number etc. needs permanent purposes of preserving.Closely get off to have occupied sizable media marketplace, and in still continuing to grow up.
The structure of general recordable optical recording media comprises substrate, responding layer, reflection horizon and protective seam.And the main part that wherein writes down signal is responding layer and reflection horizon.And mostly the responding layer of present recordable optical recording media is to utilize organic dyestuff to make.As recording materials, following shortcoming is arranged with organic dyestuff:
1, be subjected to rayed apt to deteriorate, product storage life (not before the record) is obviously shorter.
2, the potentiality that develop toward highdensity direction are not high.
3, absorbing wavelength is narrow, must come record with specific wavelength, and therefore the register system compatibility that is suitable for is low.
4, organic dyestuff need cooperate chemical substances such as organic solvent to make, and causes environmental problem.
With the optical recording media of inorganic material,,, cooperate the responding layer of germanium formation in the known technology with aluminium or golden as the reflection horizon as the flat 6-171236 patent of Japanese JP as the record rete.Its reflectivity promotes can reach 70%.But its aberration modulation mode only can be the rising modulation, and can't be the decline modulation, and is incompatible with existing optical recording media modulation mode and limit its application.And for example the U.S. 5,458, in No. 941 patents, use gold/chromium, gold/cobalt or aluminium/titanium as the reflection horizon, with semiconductor material as the reflection horizon.Wherein the reflection horizon places the recording light source plane of incidence with the raising reflection strength, but the service efficiency of its recording light source is low, needs higher recording light source power ability record.Therefore hinder the practicality of this optical recording media.Above-mentioned two kinds of inorganic material type optical recording medias and dye-type optical recording media all can't satisfy the demand in following high density and full light territory.In addition as the disclosed patent application case of the Japan special permission 08-274809 of Yuanping City thing, as recording layer, and join metallic reflector (it joins condition for producing semiconductor/metal contact crystallization) with semiconductor material.Because amorphous semiconductor coating (responding layer is as silicon) can produce crystallization in semiconductor/metal (reflection horizon is as silicon) interface, and cause the modulation of light reflection strength.Because the transformation that only depends on amorphous/crystallization is as modulating signal, the scope of its modulating signal is restricted relatively, and then restriction is to the compatibility of video disc specification.
The purpose of this invention is to provide a kind of full light territory (all visible-ranges), high density, high-res, the rete and the matching materials thereof of the recordable optical recording media of high power speed and high-compatibility, this optical record medium-membrane comprises a substrate at least, one hyaline layer and a reflection horizon, the hyaline layer of this optical record medium-membrane and reflection horizon are when being subjected to recording light irradiation heating, reaction forms alloy/compound, its reaction range forms a semi-transparent echo area, this semi-transparent reflection district causes following influence: (1) reduces the thickness of this effective hyaline layer, change optical path difference, cause the change of constructive interference or destructive interference; And/or (2) change optical constant (n﹠amp; And then change the light reflection strength k); And/or (3) change imitative aurora angle.Above-mentioned at least a above influence constitutes the front/rear aberration modulation of optical recording media record.
The rete of recordable optical recording media of the present invention and matching materials thereof be the reasons are as follows for (1) full light territory, (2) high density, (3) high-res, (4) high power speed and (5) high-compatibility:
(1) metal in reflection horizon or its alloy material all have the reflection strength of certain degree in visible wavelength region, and in the full light territory of visible light, all can produce the semi-transparent reflection district with hyaline layer, and can reach suitable record contrast, anti-big with recording light wavelength coverage applicatory;
(2) cooperate the reflection horizon of high heat conduction again, the size that can dwindle the semi-transparent reflection district is so can improve recording density;
(3) via the quick heat radiating in the reflection horizon of high heat conduction, but accelerated reaction carry out, so can improve the increase writing speed;
(4) generation in semi-transparent reflection district has a tangible transition energy density requirements, causes the circumference in semi-transparent reflection district clear obviously, and produces the record of high-res;
(5) formation in semi-transparent reflection district is themopositive reaction, can suitably reduce the recording light source power demand, and optical recording media only needs to adjust a little the optical recording media specification that can be compatible to different size.
The rete of recordable optical recording media of the present invention and matching materials thereof have following effect:
1. material provided by the present invention, its recording light wavelength coverage width, applicable to present CD optical disk system, or the dvd system in promoting, or the recording medium system of following blue light wavelength.
2. the present invention is in conjunction with the alloy-layer of high heat conduction and the alloy reaction of heat release, makes that measuring point can be very little and reaction velocity is fast.High-density optic recording medium applicable to the high power speed recording.
3. CD lattice material rete provided by the present invention system can have simultaneously and is same as existing CD modulation specification, perhaps in contrast to existing CD modulation specification.
4. the inorganic material of the present invention's use just can produce reaction because of need surpass more than the specific CD-ROM drive intensity, and therefore lower to the susceptibility of general illumination, light fastness is stable, and CD is not perishable.
5. the present invention uses inorganic material, can avoid problem of environmental pollution with an organic solvent.
Below, the rete of the recordable optical recording media of accompanying drawings a kind of full light of the present invention territory, high density, high-res, high power speed and high-compatibility and the embodiment of matching materials thereof.
Figure 1A is the structural representation of optical record medium-membrane of the present invention (having heat dissipating layer).
Figure 1B is the optical record medium-membrane of the present invention structural representation of (not containing heat dissipating layer).
Fig. 2 A is the structural change synoptic diagram after optical recording matchmaker rete of the present invention (having heat dissipating layer) writes.
Fig. 2 B is the structural change synoptic diagram after optical record medium-membrane of the present invention (not containing heat dissipating layer) writes.
Fig. 3 be embodiment 1 behind static test, the photo that optics topic micro mirror observation post gets.
Fig. 4 be embodiment 2 behind static test, the photo that optics topic micro mirror observation post gets.
Fig. 5 is after embodiment 3 has static test, the photo that optics topic micro mirror observation post gets.
Symbol description:
The 10-substrate; 20-first heat dissipating layer; The effective hyaline layer of 25-; The 30-hyaline layer; 35-semi-transparent reflection district; 40-second heat dissipating layer; 60 definitely the layer; The 70-recording light.
For above-mentioned and other purposes of the present invention, special little and height can be become apparent, preferred embodiments more cited below particularly, and cooperate attached chart, be described in detail as follows.
Preferred embodiment
The manufacturing course of the recordable optical record medium-membrane of the embodiment of the invention is as follows:
Optic disc base board → (or heat dissipating layer deposit) → hyaline layer deposit → reflection horizon deposit → (or heat dissipating layer deposit) → protective seam applies.
Processing procedure begins at first to prepare a substrate 10, and this substrate will be glass or poly-carbon ester (Polycarbonate), secondly, forms one first heat dissipating layer 20 on substrate 10.Afterwards, on first heat dissipating layer 20, form a hyaline layer 30, the thickness of this hyaline layer is between 5 to 500nm, and its material can be pluged with molten metal by silicon, germanium, gallium phosphide, indium phosphide, gallium arsenide, arsenicization, gallium antimonide, plug with molten metal that tin-oxide, tin oxide, oxidation are pluged with molten metal, select for use in alloy that zinc paste, titanium dioxide, antimony tin oxide and prostatitis material are formed or the compound.
Now forms a reflection horizon 40 on hyaline layer 30, the thickness of this reflection is between 1 to 500nm, and its material can be selected for use in the combination by silver, aluminium, gold, platinum, copper, indium, tin, iridium, yttrium, tantalum, prostatitis metal alloy and above-mentioned metal.The thicknesses of layers and the match materials in hyaline layer 30 and reflection horizon 40, when the recording light of any wavelength is according to the body heating in being subjected to visible wavelength range, reaction forms alloy/compound, its reaction range forms a semi-transparent echo area 35, shown in Fig. 2 A and 2B, this semi-transparent reflection district has light signal contrast modulation scheme as the measuring point of light note medium.This light signal contrast modulation scheme be for, when write light source 70 change for the visible wavelength model in during any wavelength, this semi-transparent reflection district of generation comprise at least following letter the modulation effect more than one:
(1) this semi-transparent reflection district is because of alloy/compound effect, optical constant (n﹠amp; K) change, and change the light reflection strength;
(2) this semi-transparent reflection district reduces the thickness of this effective hyaline layer, and incident light and catoptrical optical path difference are changed, and causes the skew of constructive interference (constructive interference) or destructive interference:
(3) this semi-transparent reflection district changes the polarized light angle because of alloy/compound effect, sees through signal intensity that polarized light reads and change.
Moreover, on reflection horizon 40, form one the 3rd heat dissipating layer 50.At last, form a protective seam 60 on second heat dissipating layer 50, protective seam 60 can form by rotary coating, and its structure is shown in 1A and 1B figure, and 1A figure is the structural representation with heat dissipating layer, and 1B figure is the structural representation that does not contain heat dissipating layer.
The number of the reading modulation mode of the recordable optical record medium-membrane of the embodiment of the invention can be adjusted the thickness of effective hyaline layer 25 of hyaline layer 30.When thickness surpasses a specific thicknesses or is lower than another specific thicknesses, this optical recording media read signal, can be the modulation mode of low reflection strength behind the high reflex strength/record before the record, or the two kinds of modulation modes of high reflex strength behind the preceding low reflection strength/record of record.
The test piece structure of embodiment 1 is shown in Figure 1A and 1B, and substrate 10 is a clear glass, and hyaline layer 30 is a silicon, with the power sputter of 300W 30 minutes on substrate 10 minutes.Reflection horizon 40 is an au-si alloy, and sputter is on hyaline layer 30, and wherein gold is with 260W, and silicon is with the power sputter of 210W, and the sputter time is 30 minutes.
Static test uses the laser light wavelength to be 780nm, with direct current 21mA (reading signal uses), adds the laser beam that the swimming of 1-5V is dashed (write signal usefulness, its burst length is the shortest to be 10ns) is constituted, and irradiation record rete measures its reflection strength variation.Its optical system is identical with CD-ROM, and only the diameter of its laser beam is big than CD system person.
Fig. 3 is the photo of observation by light microscope static test gained, observe and to get by test result, when direct current 21mA and interchange 3V, to burst length of 10ns still as seen semi-transparent reflection district 35 (about 2ms size) clearly, reflection strength contrast ratio (the ratio ratio=(I before semi-transparent reflection district 35 and the record
o-T
Wr)/I
o* 100%; I
oBe record front-reflection intensity; T
WrBe record back reflection intensity) reach 85%.Test commercially available cd-recordable CD-R with the same terms, the size of its measuring point is about 16mm.The reflection strength contrast ratio with before not writing down of its measuring point is 50%.
Embodiment 2
The structure of the test piece of embodiment 2 is shown in Figure 1A and 1B, and substrate 10 is a clear glass, and hyaline layer 30 is a silicon, with the power sputter of 300W on substrate 10.Reflection horizon 40 is an au-si alloy, and sputter is on hyaline layer 30, and wherein gold is with 260W, and silicon is with the power sputter of 210W.The hyaline layer sputter time of embodiment 2 test pieces is 10 minutes, and the reflection horizon sputter time is 30 minutes.
Static test is with embodiment 1.Fig. 4 is the photo of observation by light microscope static test gained, is observed and can be got by test result, and when direct current 21mA and the semi-transparent reflection district 35 that exchanges all burst lengths more than the 3V are the reaction of reflection strength grow, maximum contrast ratio can reach-45%.Wherein the I of the measuring point in semi-transparent reflection district 35 reaches 2.0mm.
Implement 3
The structure of the test piece of embodiment 3 is shown in Figure 1A and 1B, and substrate 10 is a clear glass, and hyaline layer 30 is a silicon, with the power sputter (the sputter time is respectively 5,10,15,20,25,30,35, reaches 40 minutes) on substrate 10 of 300W.Reflection horizon 40 be the au-si alloy sputter on hyaline layer 30, wherein gold is with 50-500W (sputter power be respectively 50,110,180,240,300,370,440, and 500W), silicon is with the power sputter of 210W.Do not add on it and guarantee layer.Static test is with embodiment 1.
The reflection strength measurement of all record retes of cumulated volume embodiment, the reflection strength between wavelength coverage 300-900nm is between 5-90%.Table 1 is high reflex strength and the minimum reflection strengths of all record retes of present embodiment under the recording light wavelength of 780nm, 650nm, 400nm.As shown in Table 1, optical recording media of the present invention is in visible domain and possess sizable reflection strength.
Table 1
Recording light wavelength (nm) 780 650 400
High reflex strength (%) 55 62 37
Minimum reflection strength (%) 8 14 24
Table 2 is made permutation and combination for the reflection strength under the optical wavelength that is combined in 780nm, 650nm, 400nm by all retes of present embodiment, can reach maximum just contrary contrast ratio.As shown in Table 2, optical recording media of the present invention is being same as existing CD modulation specification or in contrast to existing CD modulation specification, sizable contrast ratio (positive contrast is opposite with existing CD modulation specification with the identical or converse difference of existing CD modulation specification) is being arranged all in visible domain.
Table 2
Recording light wavelength (nm) 780 650 400
Positive contrast (%) 85 80 50
Converse poor (%)-90-100-50
Embodiment 4
The structure of the test piece of embodiment 4 is shown in Figure 1A and 1B, and substrate 10 is poly-carbon ester (Polycarbonate), and hyaline layer 30 is a silicon, with the power sputter of 300W on substrate 10.Reflection horizon 40 be the gold silicon sputter on hyaline layer 30, wherein the gold with 260W, silicon is with the power sputter of 210W.Each rete sputter time of present embodiment test piece and the test piece machine of embodiment 1 are together.
Static test is the photo of observation by light microscope static test gained with embodiment 1, the 5 figure, observe and can get by test result, when direct current 21mA and exchange more than the 2V free semi-transparent reflection district 35 be the reaction of reflection strength step-down.All below 1.5mm, contrast ratio is between 51-70% before and after the record for the saturating echo area of method 35 sizes when exchanging 2V.Wherein Minimum Area is below 1.5mm (writing burst length 10ns), and contrast ratio can reach 51% before and after its record.The contrast ratio of semi-transparent reflection district 35 maximums can reach 100% when exchanging 3V.Wherein the I of the measuring point in semi-transparent reflection district 35 reaches 2.0M.
The structure of embodiment 5 test pieces is shown in Figure 1A and 1B, and substrate 10 is a clear glass, and hyaline layer 30 is for pluging with molten metal tin-oxide, and thickness is about 50nm.Reflection horizon 40 is that the tin sputter is on hyaline layer 30.
Static test is with embodiment 1.Observe and can get by test result, when direct current 27mA and exchange more than the 1V free semi-transparent reflection district 35 be the reaction of reflection strength step-down.All below 1.5mm, contrast ratio is between 30-60% before and after the record for semi-transparent reflection district 35 sizes when exchanging 2V.Wherein Minimum Area is below 1.5mm (write time 10ns), and contrast ratio can reach 48% before and after its record.The contrast ratio of semi-transparent reflection district 35 maximums can reach 60% when exchanging 3V.
Though the present invention discloses as above by several preferred embodiments, this disclosure is not in order to limit the present invention.Under the premise without departing from the spirit and scope of the present invention, those skilled in the art can do to change and revise, so protection scope of the present invention is determined by appending claims.
Claims (13)
1, the recordable optical record medium-membrane of a kind of full light territory, high density, high-res, high power speed and high-compatibility comprises at least:
One substrate;
One hyaline layer is formed on this substrate;
One reflection horizon, be formed on this hyaline layer, wherein, the thicknesses of layers in this hyaline layer and this reflection horizon and match materials, when the irradiation of the recording light of any wavelength was heated in being subjected to visible wavelength range, reaction formed alloy/compound, and its reaction range forms a semi-transparent echo area, this semi-transparent reflection district has light signal contrast modulation scheme as the measuring point of recording medium; And
One guarantees layer, is formed on this reflection horizon.
2, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility, wherein this light signal contrast modulation scheme can for: when writing light source is in the visible wavelength range during any wavelength, and this semi-transparent reflection district of generation comprises more than one in the following modulating signal effect at least:
(1) this semi-transparent reflection district is because of alloy/compound effect, optical constant (n﹠amp; K) change, and change the light reflection strength;
(2) this semi-transparent reflection district reduces the thickness of this effective hyaline layer, and incident light and catoptrical optical path difference are changed, and causes the skew of constructive interference or destructive interference:
(3) this semi-transparent reflection district changes the polarized light angle because of alloy/compound effect, sees through signal intensity that polarized light reads and change.
3, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility, wherein this substrate is to be glass or poly-carbon ester.
4, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility, wherein the thickness of this hyaline layer is between 5 to 500nm, and its material is by selecting for use in silicon, germanium, gallium phosphide, phosphatization are pluged with molten metal, gallium arsenide, arsenicization are pluged with molten metal, zinc antimonide, titanium dioxide, antimony tin oxide and prostatitis material are formed alloy or the compound.
5, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility, this reflection horizon wherein, thickness is between 1 to 500nm, and its material is by selecting for use in silicon, germanium, gallium phosphide, phosphatization are pluged with molten metal, gallium arsenide, arsenicization are pluged with molten metal, zinc antimonide, titanium dioxide, antimony tin oxide and prostatitis material are formed alloy or the compound.
6, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility wherein further is included between this substrate and the hyaline layer or between this reflection horizon and this assurance layer and forms a heat dissipating layer.
7, the recordable optical record medium-membrane of full light as claimed in claim 1 territory, high density, high-res, high power speed and high-compatibility, the modulating signal mode that reads of this optical recording media wherein, can be via the thickness of adjusting hyaline layer:
When thickness surpasses a specific thicknesses or is lower than another specific thick timing, this optical recording media read signal, can be the modulation mode of low reflection strength behind the high reflex strength/record before the record, or the two kinds of modulation modes of high reflex strength behind the preceding low reflection strength/record of record.
8, the recordable optical record medium-membrane of a kind of full light territory, high density, high-res, high power speed and high-compatibility comprises at least:
One substrate;
One hyaline layer forms on this substrate of what;
One reflection horizon, be split on this hyaline layer of what, wherein, the thicknesses of layers in this hyaline layer and this reflection horizon and match materials, when the irradiation of the recording light of any wavelength was heated in being subjected to visible wavelength range, reaction formed alloy/compound, its reaction range forms a semi-transparent echo area, this semi-transparent reflection district has light signal people contrast modulation scheme as the measuring point of optical recording media, comprises in the following modulating signal effect more than one at least:
(1) this semi-transparent reflection district is because of alloy/compound effect, optical constant (n﹠amp; K) change, and change the light reflection strength,
(2) this semi-transparent reflection district reduces the thickness of this effective hyaline layer, and incident light and catoptrical optical path difference are changed, and causes the skew of constructive interference or destructive interference,
(3) this semi-transparent reflection district changes the polarized light angle because of alloy/compound effect, sees through signal intensity that polarisation reads and change; And one guarantee layer, is formed on this reflection horizon.
9, method as claimed in claim 8, wherein this substrate is to be glass or poly-carbon ester.
10, method as claimed in claim 8, this hyaline layer wherein, thickness is between 5 to 500nm, and its material is by selecting for use in silicon, germanium, gallium phosphide, phosphatization are pluged with molten metal, gallium arsenide, arsenicization are pluged with molten metal, tin-oxide is pluged with molten metal, pluged with molten metal to gallium antimonide, antimonyization, tin oxide, oxidation are pluged with molten metal, zinc paste, titanium dioxide, antimony tin oxygen personage and prostatitis material are formed alloy or the compound.
11, method as claimed in claim 8, wherein the thickness in this reflection horizon is between 1 to 500nm, and its material is to select for use in the combination by silver, aluminium, gold, platinum, copper, tin, iridium, tantalum, prostatitis metal alloy and above-mentioned metal.
12, method as claimed in claim 8 wherein more is included between this substrate and the hyaline layer or between this reflection horizon and this assurance layer and forms a heat dissipating layer.
13, method as claimed in claim 8, the modulating signal mode that reads of this optical recording media wherein, can be via the thickness of adjusting hyaline layer: when thickness surpasses a specific thicknesses or is lower than another specific thicknesses, this optical recording media read signal, can be the modulation mode of low reflection strength behind the high reflex strength/record before the record, or the two kinds of modulation modes of high reflex strength behind the preceding low reflection strength/record of record.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001096648A CN1151500C (en) | 2000-06-20 | 2000-06-20 | Recordable optical record medium-membrane and its matched material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001096648A CN1151500C (en) | 2000-06-20 | 2000-06-20 | Recordable optical record medium-membrane and its matched material |
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| CN1330368A true CN1330368A (en) | 2002-01-09 |
| CN1151500C CN1151500C (en) | 2004-05-26 |
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