CN1146889C - 光盘 - Google Patents

光盘 Download PDF

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CN1146889C
CN1146889C CNB981069576A CN98106957A CN1146889C CN 1146889 C CN1146889 C CN 1146889C CN B981069576 A CNB981069576 A CN B981069576A CN 98106957 A CN98106957 A CN 98106957A CN 1146889 C CN1146889 C CN 1146889C
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recording layer
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recording
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CN1206183A (zh
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金明准
金成洙
安荣万
卢明道
尹斗燮
郑丞台
刘长勋
李哲雨
徐偕贞
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Samsung Electronics Co Ltd
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Abstract

一种光盘，由不同格式光盘播放机兼容播放，它包括一层透射入射光的透明衬底；一有信息记录面的第一记录层，所记录的信息通过第一波长光束播放；形成在第一记录层上的部分透光薄膜，随入射光波长呈现不同的透射率，反射第一波长光束并透射第二波长光束；一使已透过部分透射薄膜的光束透射的隔层；一有信息记录面的第二记录层，所记录的信息通过第二波长光束播放；和一层形成在第二记录层上的反射膜，反射聚焦在第二记录层上的光束。部分透光薄膜是一种依次由一氧化钛层、氟化镁层和氧化钛(TiO2)层层叠成的多层薄膜。

Description

光盘
技术领域
本发明涉及一种具有两层或多层信息记录层的光盘，特别是涉及一种能由不同格式标准光盘播放机兼容播放的光盘。
背景技术
通常，光盘是由包含两层或多层信息记录层的多层结构构成，以此作为一种增加光盘的信息记录容量的方法。
图1是对一种传统的两层光盘的一个例子的解释。如图1所示，该光盘从由光线照明的一侧开始依次包括：第一透明衬底11、带有信息记录面的第一记录层13、第一胶粘层15、隔层17、第二胶粘层19、第二记录层21、和第二透明衬底23。
第一衬底11由1mm厚的透明聚氯乙烯(PVC)构成，并透射入射光。第一记录层13由一种紫外线固化树脂构成，并形成在第一衬底11的一侧表面上。在第一记录层13上设有构成螺旋形轨迹的凸起13a和凹坑13b。在第一记录层13的与第一胶粘层15毗连的表面上有一层部分透光薄膜，能使一部分入射光透射。部分透光薄膜的优先材料为硒化锌(ZnSe)、氧化铋(BiO)、硫化镉(CdS)、碲化镉(CdTe)或碳化硅(SiC)之类。
此外，第二记录层21的结构与第一记录层13的结构相类似，其与第二胶粘层19毗连的那一表面20设有一层反射率约为90％的反射层，第一胶粘层15、第二胶粘层19和隔层17是使第一记录层13和第二记录层21既隔开且又互相连接的层，并且透射入射光。由透明的PVC制成的第二衬底23保护第二记录层21。
在如上所述的光盘结构中，记录信息的播放是通过利用从第一衬底11进入并被物镜3聚焦的入射光束来实现的。也就是，记录在第一记录层13上的信息可以通过调节物镜3使光束1聚焦在第一记录层13上来播放，记录在第二记录层21上的信息可以通过调节物镜3使光束1′聚焦在第二记录层21上播放。
虽然上述光盘结构由于具有第一和第二记录层13和21这双层结构，从而增大了记录容量，但它只能用于使用650nm波长光束的光盘播放机，例如，一种数字多功能盘只读存储器(DVD-ROM)播放机。
另一方面，近来在光盘播放机的技术领域中，按照新标准的DVD(数字多功能盘)播放机可从市场买到，这种播放机在增加记录容量的同时能够获得高质量的声音和图像。DVD播放机使用辐射650nm波长的激光作为光源，而在标准CD(小型盘)播放机中激光的波长是780nm，物镜的标准数字孔径是0.6。此外，按用于DVD播放机的DVD规格，入射面和记录面之间的标准厚度是0.6mm，标准的光道间距是0.74μm，而在CD中厚度是1.2mm，光道间距是1.6μm。
由于上述的DVD播放机发展成有多种结构并能适合标准CD的播放，所以记录在CD上的信息也能够由DVD播放机播放。
然而由于规格的不同，记录在DVD上的信息不能被CD播放机播放。
发明内容
为解决上述的问题，本发明的一个目的是提供一种具有两层或多层信息记录层并且能在不同格式标准的光盘播放机上兼容播放的光盘。
为实现上述的目的，所提供的一种能由不同格式标准光盘播放机兼容播放的光盘，其包括：一层透射入射光的透明衬底、和一层含有一信息记录面的第一记录层，信息信号记录在该记录面上。所记录的信息通过第一波长光束播放。光盘还包括形成在第一记录层的一侧表面上的部分透光薄膜，其随着入射光的波长呈现不同的透射率，第一波长的大部分光束被部分透射薄膜反射，第二波长的大部分光被透射。还包括一层使已透过部分透射薄膜的光束透射的隔层，和一层含有一信息记录面的第二记录层，信息信号记录的该记录面上。所记录的信息通过已透过部分透光薄膜的第二波长光束播放。在第二记录层的信息记录面上还形成一层反射膜，反射聚焦在第二记录层上的光束。部分透光薄膜是一种依次由一氧化钛层、氟化镁层和氧化钛(TiO2)层层叠成的多层薄膜。
附图说明
通过参考附图详细描述一个最佳实施例，使本发明的上述目的和优点将会更显而易见。
图1是说明一种传统两层光盘的一个例子的剖视图；
图2是按照本发明光盘的一个实施例的剖视图；
图3是表示按照本发明光盘的部分透光薄膜的反射率-波长关系的曲线图；
图4是说明按照本发明光盘的部分透光薄膜的一个例子的剖视图；
图5是说明按照本发明光盘的部分透光薄膜的另一个例子的剖视图；
图6是表示第一波长和第二波长光束的反射率随着图5第一介质层的厚度变化而变化的曲线图；
图7是示意说明利用光盘第一记录层方式的本发明光盘的剖视图；
图8是示意说明利用光盘第二记录层方式的本发明光盘的剖视图。
具体实施方式
参考图2，按照本发明的光盘的一个实施例，从被光线(L)照明的一侧开始依次包括：透明衬底31、第一记录层33、部分透光薄膜35、隔层39、反射膜43、第二记录层45和保护层47。
透明衬底31透射入射光(L)并保护第一记录层33，透明衬底31由聚合材料制造，例如传统光盘中的透明PVC材料。第一记录层33有一个在其上记录信息的信息记录面34，记录在信息记录面34上的信息通过第一波长的入射光播放。在这种情况中，第一波长约为650nm，因此，第一记录层33相当于传统DVD的信息记录层。在第一记录层33的信息记录面34上有形成螺旋形轨迹的凸起34a和凹坑34b。这里，第一记录层33的光道间距约0.74μm，在透明衬底31的光入射表面31a和第一记录层33的信息记录面34之间的厚度T1最好取0.6mm。
部分透光薄膜35形成在第一记录层33的信息记录面34上，并随着入射光的波长呈现不同的透射率，因此使第一波长大部分的光束反射，而使播放记录在第二记录层45上信息信号的第二波长大部分光束例如780nm透射。
隔层39是使第一记录层33和第二记录层45既隔开且又互相连接的层，并且透射从部分透光薄膜35透过来的第二波长入射光。
这里，在部分透光薄膜35和隔层39之间及隔层39和第二记录层45之间分别设有胶粘层37和41，胶粘层37和41采用一种紫外线固化树脂并用已知的旋镀法制成。
第二记录层45有一信息记录面46，通过从部分透光薄膜35透射过来的第二波长光束来播放所记录的信息。第二记录层相当于传统CD的信息记录层，第二记录层45设有凸起46a和凹坑46b，凸起和凹坑形成与第一记录层33相同形式的螺旋形轨迹。这里，第二记录层45的光道间距约为1.6μm，在透明衬底31的光束进入表面31a与第二记录层45的信息记录面46之间的厚度(T2)优选1.2mm。
记录在第一记录层33上的信息基本上与记录在第二记录层45上的信息相同，例如，当按照本发明的光盘作为一兼容的声盘使用时，第一记录层33和第二记录层45分别以不同的格式记录了相同的音频信息，也就是说，第一记录层33记录有高质量音频信息，该高质量音频信息具有96KHz或更高的取样率和5.1声道的Dolby AC3，第二记录层45记录了具有44.1KHz的取样率的立体声音频信息。因此，在一CD光盘播放机内播放光盘时产生立体声，且又产生高质量声音。
反射膜43形成在胶粘层41和第二记录层45的信息记录面46之间，并反射聚焦在第二记录层45上的光束。反射膜43由铝、铝合金、铜或铜合金之类的材料制成。
用来保护第二记录层45的保护层47形成在第二记录层45上面，防止氧化和毁坏第二记录层45。
由于本发明的性能取决于部分透光薄膜35的结构和特性，现在参考附图3至图6来说明部分透光薄膜35。
如图3所示，相对于650nm波长而言，该部分透光薄膜35优选高于约25％的反射率，相对于780nm波长优选低于18％的反射率。这是为了避免不利情况发生，该情况是指记录在本发明光盘第二记录层45上的信息不能采用在一种较短光波光源的CD/DVD兼容机上被播放，例如650nm光波的CD/DVD兼容机。
为获得部分透光薄膜35具有上面所述的特性，部分透光薄膜35由如下所述的介质材料制成。
也就是说，部分透光薄膜35可以由诸如硅(Si)、氮化硅(SiNx)、铜-铍合金、氧化钛(TiO2)或氧化硅(SiO2)之类的介质材料制成。这里，部分透光薄膜35相对于第一波长光的反射率及其相对于第二波长光的透射率可以通过调节部分透光薄膜35的厚度来确定。
此外，部分透光薄膜35可以用氧化钛(TiO2)层、氟化镁(MgF2)层和氧化钛(TiO2)层依次层叠的多层介质层的形式构成。
进一步，部分透光薄膜35最好包含范围从2.0至2.9左右的高折射率的介质层和范围从1.3至2.0左右的低折射率的介质层。
当高折射率的介质层和低折射率的介质层从光照一侧开始依次按上面描述层叠时，在其交界面上的反射率(R)由以下方程式来确定：
R = [ n 2 - n 1 n 2 + n 1 ] 2 cos ( 4 Πd λ )
这里，n1和n2分别是高折射率介质层和低折射率介质层的折射系数，d是每层高折射率介质层的厚度，λ是入射光的波长。
因此，部分透光薄膜35对应于光的波长折射率可通过如图4所示的层叠高折射率介质层和低折射率介质层适当地确定。这里，每一层高折射率的介质层和低折射率的介质层可以由诸如硅(Si)、氮化硅(SiNx)、铜-铍合金、氧化钛(TiO2)或氧化硅(SiO2)之类的介质材料制成。
此外，如图5所示，部分透光薄膜35可以包括高折射率的第一介质层35a、低折射率的第二介质层35b和高折射率的第三介质层35c，这些层从第一记录层33(见图2)开始依次层叠。如图5所示，当每一介质层由氮化硅(SiN)制成，高折射率的介质层35a和35c的折射率是2.88，低折射率的介质层35b的折射率是1.94时，部分透光薄膜35相对于650nm波长的第一波长光束和780nm的第二波长光束的折射性能显示在图6中。
图6的曲线图表示：当第二介质层35b的厚度是900A和第三介质层35c的厚度是600A时，第一和第二波长的反射率相对于第一介质层35a的厚度变化的变化。如图6所示，在1500A的厚度左右，650nm的第一波长光束的反射率高达约57％，780nm的第二波长光束的反射率低至约16％，由此发现该实施例的部分透光薄膜35显示了一种特有的波长选择能力，使第二波长约84％的光透过。从而，可以通过调节部分透光薄膜35的每一层厚度或折射率来选择调节第一和第二波长光束的反射率。
当光盘的信息分别在一CD播放机和一DVD播放机中被播放时，现在按照本发明的光盘解释其播放方式。
参考图7，当光盘在DVD播放机中播放时，从光源辐射出来的650nm波长的光束51被数字孔径为0.6的物镜53会聚，并聚焦在第一记录层33上。
参考图8，另一方面，当光盘在CD播放机中被播放时，从光源辐射出来的780nm波长的光束61被数字孔径为0.45的物镜63会聚，该会聚的光束62透过透明衬底31、第一记录层33、部分透光薄膜35和隔层39，聚焦在第二记录层45上。
因此，通过把信息记录在第一记录层33和第二记录层45上，并在33和45这两层之间形成部分透光薄膜35，而部分透光薄膜35根据光束的波长呈现不同的透射率，从而使按照本发明的光盘能够在不同格式标准的光盘播放机上兼容地播放，例如小型盘播放机(compact disk player-CDP)或数字多功能盘播放机(digital versatile disk player-DVDP)。
对本发明的光盘可以作多种改变而不脱离本发明权利要求所限定的精神和范围。

Claims (8)

1.一种光盘，可由不同格式标准的光盘播放机兼容地播放，其特征在于，它包括：
一透射入射光的透明衬底；
第一记录层，其含有一信息记录面，信息信号记录在所述记录面上，其中，在其上面所记录的信息信号通过第一波长光束播放；
一形成在第一记录层的一侧表面上的部分透光薄膜，随着入射光的波长呈现不同的透射率，并因此反射第一波长中的大部分光束，透射第二波长的大部分光束；
一形成在第一记录层的一侧表面上的隔层，将所透射的光穿过所述部分透射薄膜；
第二记录层，其含有一信息记录面，信息信号记录在所述记录面上，在其上面所记录的信息通过透过部分透光薄膜的第二波长光束播放；和
一形成在第二记录层的信息记录面上的反射膜，反射聚焦在第二记录层上的光束；
其特征在于，部分透光薄膜是一种依次由一氧化钛层、氟化镁层和氧化钛(TiO2)层层叠成的多层薄膜。
2.按照权利要求1所述的光盘，其中，部分透光薄膜是由硅、氮化硅、铜-铍合金、氧化钛或氧化硅组成的族中选择任何一种或其材料的组合而制成的。
3.按照权利要求1所述的光盘，其中，部分透光薄膜包括一层折射率范围从2.0至2.9左右的高折射率介质层和一层范围从1.3至2.0左右的低折射率介质层。
4.按照权利要求3所述的光盘，其中，制造每一层高折射率介质层和每一层低折射率介质层的材料是从由硅、氮化硅、铜-铍合金、氧化钛、或氧化硅组成的族中选择任何一种或其组合。
5.按照权利要求3或4所述的光盘，其中，部分透光薄膜包括一高折射率的介质层和一低折射率的介质层，它们从第一记录层的一侧开始依次层叠。
6.按照权利要求1至4所述的光盘，其中，制造反射膜的材料从铝、铝合金、铜和铜合金组成的族中选择一种或其组合。
7.按照权利要求1所述的光盘，其中，第一记录层的光道间距约0.74μm，在透明衬底和第一记录层的信息记录面之间的厚度是0.6mm左右。
8.按照权利要求1所述的光盘，其中，第二记录层的光道间距约1.6μm，在透明衬底和第二记录层的信息记录面之间的厚度是1.2mm左右。
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US20060179448A1 (en) * 2004-12-23 2006-08-10 Smith Wayne M Multilayer dual optical disk
WO2006132283A1 (ja) * 2005-06-09 2006-12-14 Pioneer Corporation 情報記録媒体
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JPH056571A (ja) * 1991-06-28 1993-01-14 Pioneer Electron Corp 光学式情報記録媒体
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US5965228A (en) * 1995-09-01 1999-10-12 Balzers Aktiengesellschaft Information carrier, method for producing same
PL181642B1 (en) * 1995-09-08 2001-08-31 Philips Electronics Nv Optical multiple-layer information carrier
EP0800699A1 (en) * 1995-10-13 1997-10-15 Koninklijke Philips Electronics N.V. Optical registration medium with dual information layer
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