TWI252482B - Compound disc and manufacturing method thereof - Google Patents

Abstract

A compound disc includes a first substrate and a second substrate. In this case, the first substrate has a first surface and a second surface, wherein the first surface has a groove structure of blue-ray disc and deposits a first semi-reflecting layer and a first recording layer. The first semi-reflecting layer is formed on the first surface while the first recording layer is formed on the first semi-reflecting layer. The second substrate has a third surface and a forth surface. The third layer has a groove structure of digital versatile disc and deposits a second recording layer as well as a second semi-reflecting layer. The second semi-reflecting layer is formed on the third layer while the second recording layer is formed on the semi-reflecting layer. And then the second recording layer is bonded to the second surface of the second substrate. The forth surface has a groove structure of compact disc and deposits a reflection layer. Furthermore, this invention also discloses a manufacturing method of the mentioned compound disc.

Description

1252482 V. INSTRUCTION OF THE INVENTION (1) (I) Technical Field of the Invention The present invention relates to a composite optical disc and a method of manufacturing the same, relating to a composite type having a double-sided recording layer and a single-sided recording layer Optical disc and its manufacturing method. (-1), [First Technology] In modern times, optical disc recording media has been widely used as a means of storing data. As the demand for data storage capacity is increasing, it is correspondingly developed to have a south storage 1 Optical disc recording media, such as digital versatile discs (DVDs), and higher-capacity Biue-ray discs, which are stored in a high-density recording mode to store more common optical discs. (CD, c〇mpact

Disc) is much higher. Due to the different specifications of the optical disc recording medium, different devices have been developed. Please refer to Figure 1. Different optical disc recording media specifications will correspond to different wavelengths of laser light and different types of polyfluorinated materials. For reading and writing, taking the Blu-ray disc 1 as an example, the wavelength of the (-), 4 focal length is 0. lmm of the blue laser light J 2 through the i to enter the second two: digital audio and video discs 2 and optical discs 3, the red laser light 22 with the wavelength, & the focal length is 通过· passes through the lens 21 and 2 - the red laser light 32 with a hard focal distance of l 2 mm passes through the lens 31 I ^ = visually, due to the blue light disc 1 has a smaller ditch specification and phase: two wavelengths, the wavelength of the laser light for reading and writing 'so the Blu-ray disc 1 compared to the ", and the digital shirt disc 2, the system has a higher density of storage

1252482 V. Description of invention (2) Storage format. In the near future, the production equipment that conforms to the production and is formed by sputtering is formed in accordance with the market, and the recording and recording media are displayed in the same quantity. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The records have different specifications. At present, although the media's fast recording media is produced in a variety of different composite specifications, the compatibility of CD-reading/writing systems, and DVD optical reading and writing are 1 ^ ^ j. The composite plastic optical disc will be completed by attaching the DVD and the CD to the door, and using the different recording gauges β ^ λ without sinking the stamp (stamper) and the substrate of the DVD ^ ^ L ^ ^ Then, after the substrate is used to reflect the laser light of the optical disc reading and writing system, the reflective layers of the CD and the DVD face the bonded optical disc, because the composite optical disc is compatible with different specifications of optical discs. read Media manufacturers can also be consumers of this type of optical disc reading system. However, there are already composite CDs of CDs and DVDs, and the development has continued to increase the inevitable trend of data recording density and capacity. Therefore, how to be compatible with the luminescence reading and writing device system, and the qualification of optical discs, Make a disc for the current production

1252482 V. Description of the Invention (3) A first substrate and a second substrate. The first substrate has a first surface and a second surface, wherein the first surface has a trench structure of a Blu-ray disc format, and is provided with a first recording layer and a first semi-reflective layer, the first semi-reflective layer Formed on the first surface, the first recording layer is formed on the first semi-reflective layer; the second substrate has a third surface and a fourth surface, and the third surface has a groove of a digital video disc format Constructed, and provided with a second recording layer and a second semi-reflective layer, the second semi-reflective layer is formed on the third surface, the second recording layer is formed on the second semi-reflective layer, and the second recording layer is The fourth surface is bonded to the second surface of the first substrate, and the fourth surface has a groove structure in a disc format and is provided with a total reflection layer. In addition, the present invention also provides a composite optical disc manufacturing method comprising a first substrate molding process, a second substrate molding process, a bonding process, and a protective layer forming process. The first substrate molding process is formed by using a single-sided mold to form a first substrate having a single-sided groove, and is formed on a first surface of the first substrate to form a trench structure of a Blu-ray disc format, and is formed on the first surface. Forming a first semi-reflective layer and a first recording layer in sequence; the second substrate molding process is performed by using a double-sided mold to form a first substrate having a double-sided groove track, and a third surface of the second substrate Forming a trench structure for forming a digital video disc format, and sequentially forming a second semi-reflective layer and a second recording layer on the third surface, and the double-sided mold is simultaneously on one of the fourth surfaces of the second substrate Ejecting a trench track structure forming a disc format, and forming a full shot layer on the fourth surface; the bonding process is to form the second recording layer of the second substrate and the first base

1252482 V. INSTRUCTION DESCRIPTION (4) One of the second surfaces of the board is bonded. Finally, the protective layer forming process is performed by forming a protective layer on the first recording layer of the first substrate. According to the above description, the composite optical disc according to the present invention is composed of a double-sided groove track and a single-sided groove substrate, which effectively increases the amount of data stored in the optical disc, and cooperates with different formats. The recording track structure makes it more compatible with today's different optical reading and writing devices. (4) [Embodiment] Hereinafter, a splicing optical disc and a manufacturing method thereof will be described with reference to the related drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the preferred embodiment of the present invention, the same components will be referred to with reference to FIG. 2. The composite optical disc 4 according to the preferred embodiment of the present invention includes a first substrate 41 and a second substrate. 42. The first substrate 41 has a first surface 411 and a second surface 412. The second substrate 42 has a second surface 421 and a fourth surface 422. The second surface 412 of the first substrate 41 faces The third surface 421 of the second substrate 42 is bonded. Referring to FIG. 3, in the present embodiment, the first substrate 41 is a substrate having a single-sided groove, and the first surface 411 is a trench structure having a Blu-ray disc format, and is disposed thereon. There is a first semi-reflective layer 414 and a first recording layer 413. The first semi-reflective layer 414 is formed on the first surface 411, the first recording layer 413 is formed on the first semi-reflective layer 414, and the second substrate 42 is The substrate having a double-sided groove has a third surface 421 having a groove structure of a digital video disk format, and a second semi-reflective layer 4 24 and a second recording layer 423 are disposed thereon. The second semi-reflective layer 4 24 is formed on the third surface 421

1252482 V. Inventive Description (5) The second recording layer 423 is formed on the second semi-reflective layer 424, and the second recording layer 423 of the third surface 421 is attached to the second surface 412 of the first substrate 41. Forming the composite optical disc 4, the fourth surface 42 2 has a groove structure of a disc format, and a total reflection layer 425 is disposed thereon. Here, the semi-reflective layer is disposed. In order to allow a portion of the laser light to penetrate, the § recording layer of the different layers is read and written. As shown in FIG. 4, in another embodiment, the composition of the first substrate 41 and the second substrate 42 are as described above, and therefore will not be described again. The surface 422 may further include a third recording layer 426, and the third recording layer 426 is formed between the fourth surface 422 and the total reflection layer 425. In summary, in the structure of the composite optical disc 4, the fourth surface 422 may be a data recording method of pre-grooving to form a CD-ROM (as indicated by reference numeral 422 in FIG. 3) or may further include a recording layer. In order to form a CD-r or CD-RW data recording method (as shown by reference numeral 426 in FIG. 4), a composite optical disc composed of three different data recording formats and different data recording modes can be used. The data storage capacity is greatly expanded, and the composite optical disc has higher compatibility with optical storage devices of different specifications and functions. Further, the first recording layer 413, the second recording layer 423, and the second e-recording layer 426 may include at least one of an organic dye and a metal substance, and the organic dye is lysed after being irradiated by laser light. , forming a disc that can be written once (such as: BD-R, CD-R, DVD-R, etc.), and the metal substance is phase-changed after being irradiated by the laser light to form a rewritable optical disc. (eg BD-RW, CD-RW, DVD-RW, etc.).

Page 10 1252482 V. Description of the Invention (6) In the present embodiment, as shown in FIG. 5, the thickness of the first substrate 4 is 〇·5 mm, and the thickness of the second substrate 42 is 〇·6 mm. The composite optical disc 4 is formed, and further, according to the diameter, it can be divided into two types of composite optical discs having a diameter of about 8 cm or about 12 cm (refer to FIG. 5, reference numeral 4, and reference numeral 4, respectively). In this embodiment, the composite optical disc 4 further includes a protective layer 43 formed on the first surface 41 of the first substrate 41, and the protective layer 43 has a thickness of about 〇·1 mm. The composite optical discs 4 and 4 formed by the first substrate 41, the second substrate 42 and the protective layer 43 have a thickness of about 1.2 mm. The following is a detailed description according to FIG. A composite optical disc manufacturing method. Referring to FIG. 6 , the method for manufacturing a composite optical disc according to the present invention includes a first substrate molding program P01 , a second substrate molding program p, a bonding process P 0 2 , and a protective layer forming program p. 〇 3. Referring to FIG. 7 , in the embodiment, the first substrate molding program P0 1 is formed by using a single-sided mold to form a first substrate 41 having a single-sided groove, on the first surface of the first substrate 41 . The 411 is formed to form a trench structure of a Blu-ray disc format, and a first semi-reflective layer 414 and a first recording layer 413 are formed on the first surface 411 in sequence; the second substrate molding program factory 1 is profitable. The double-sided mold is ejected to form a second substrate 42 having a double-sided groove track, and is formed on a third surface 41 of the first substrate 42 to form a ditch structure of a digital audio-visual disc format, and sequentially A second semi-reflective layer 424 and a second recording layer 423 are formed on the surface 421, and a trench track structure forming a disc format is formed on the fourth surface 42 of the second substrate 42 and is on the fourth surface.

5. Inventive Description (7) A total reflection layer 425 is formed on 422; the bonding procedure p〇2 is to laminate the second recording layer 423 of the third surface 42i with the second surface 412 by using a UV hardening sol; The protective layer forming process P〇3 forms a protective layer 43 on the first layer 413 of the first surface 41 by a spin coating method or a sheet bonding method to complete the composite optical disc 4, and the above-mentioned The choice of the different reflection systems, the number of reflective layers, and the formation procedure is determined by the recording layer of the optical pickup relative to the different thickness positions of the optical disk. Moreover, referring to FIG. 8, in another embodiment, the second substrate 包含 includes a third recording layer 426 formed on the fourth surface 422, and the third recording layer 426 is formed on the fourth surface m. And total reflection: As described above, the first recording layer 41 3 and the second recording layer 423 are used as an organic dye recording layer or a phase change recording layer, and a recording method of human and repeated writing. Referring to the above, referring to FIG. 7 and FIG. 8, the fourth surface 422 can be selected as a pre-groove. The manufacturing method is after the substrate is formed in the disc groove format:: plating = reverse: layer (as shown in FIG. 7) The symbol 425 is shown) and the substrate is finished. The organic dye or the metal substance is used for recording. In the process of opening m, the substrate is coated with an organic dye recording layer in the disc groove format or the phase change is recorded.曰> / 彳 then on the recording layer (as shown in Figure 8 on the label 426, the jade reflective layer is sputtered (as shown in Figure 8 by 425 % :/, to form two different recording modes: :v thus differs from See the compatibility of the optical reading and writing equipment of the grid. W read the board for not to mention the 'first substrate 41' from the single-sided mold using thin shell injection technology 1252482 five, invention instructions (8) surgery to form the injection machine A substrate having two substrates 4 2 and a double-sided mold · 6 mm, in addition to the above, since the legal system will have a single-sided groove, and the composite optical disc Blu-ray disc (BD) recording disc (CD) recording format , a composite optical disc composed of a groove and an organic dye recording layer, the composite optical disc simultaneously The compatibility of the combined optical disc is used. The above description is only for the spirit and scope of the present invention. It should be included in the attached substrate with a single-sided groove track and a thickness of about 0 mm; the first injection molding has a double The groove track has a thickness of 'the thickness of the protective layer 43 is about 〇lmm. According to the composite optical disk of the present invention and the manufacturing square track thereof and the substrate combination with the double-sided groove track, the film is opposite to the optical head by the optical pickup The top and bottom include the modal, digital audio and video (DVD) recording format and: ί 'This recording method can be selected as a combination of preset recording layers, which effectively increases the data storage capacity, plus There are different recording methods, and the optical components of this different specifications and functions are added. "Write device example: For Ιί: Manufacture. Any change or change without special modification, page 13 1252482 Simple BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional read/write system of optical discs of different specifications. FIG. 2 is a schematic view showing a composite type according to a preferred embodiment of the present invention. Disc 3 is a schematic view showing the structure of a composite optical disc according to a preferred embodiment of the present invention; FIG. 4 is a schematic view showing a composite optical disc according to another preferred embodiment of the present invention. The intent of the structure of the film,

5 is a schematic view showing the composition thickness of a composite optical disc according to a preferred embodiment of the present invention; FIG. 6 is a schematic view showing the flow of the manufacturing method of the composite optical disc according to the preferred embodiment of the present invention. 7 is a schematic view showing a manufacturing method of a composite optical disc according to a preferred embodiment of the present invention; FIG. 8 is a schematic view showing a manufacturing method of a composite optical disc according to another preferred embodiment of the present invention; schematic diagram.

Component symbol description: 1 Blu-ray disc 11 lens 12 laser light 2 digital audio and video disc 21 lens I ιιβι page 141252482 simple illustration 22 laser light 3 optical disc 31 lens 32 laser light 4 composite optical disc 41 first substrate 411 first surface 412 second surface 413 first recording layer 414 first reflective layer 42 second substrate 421 first--- surface 422 fourth surface 423 second recording layer 424 second semi-reflective layer 425 total reflection layer 426 Second recording layer 43 Protective layer 4, composite optical disk P01 First substrate molding program P' 01 Second substrate molding program P02 Bonding program P03 Protective layer forming program

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Claims (1)

1252482 6. Patent application scope 1. A composite optical disc comprising: a first substrate having a first surface and a second surface, the first surface having a trench structure in a Blu-ray disc format, and a first recording layer and a first semi-reflective layer are formed on the first surface, the first recording layer is formed on the first semi-reflective layer; and a second substrate The method has a third surface and a fourth surface, wherein the third surface has a groove structure of a digital video disc format, and is provided with a second recording layer and a second semi-reflective layer, the second half a reflective layer is formed on the third surface, the second recording layer is formed on the second semi-reflective layer, the second recording layer is bonded to the second surface of the first substrate, and the fourth surface is It has a groove structure in a disc format and is provided with a total reflection layer. 2. The composite optical disc of claim 1, further comprising: a protective layer formed on the first recording layer of the first substrate. 3. The composite optical disc of claim 2, wherein the protective layer has a thickness of 0.1 mm. 4. The thickness of the first substrate is 0.5 mm, as in the composite optical disc of claim 1. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. 6. The composite optical disc of claim 1, wherein the fourth surface of the second substrate further comprises a third recording layer formed on the fourth surface and the total reflection Between the layers. 7. The composite optical disc of claim 1, wherein the first recording layer and the second recording layer comprise at least one of an organic dye or a metallic substance. 8. The composite optical disc of claim 6, wherein the third recording layer comprises at least one of an organic dye or a metallic substance. 9. A composite optical disc manufacturing method, wherein the composite optical disc comprises a first substrate and a second substrate, and the composite optical disc manufacturing method comprises: a first substrate molding process, which uses a single-sided mold to form a first substrate having a single-sided groove track, and emits a trench structure on a first surface of the first substrate to form a Blu-ray disc format, and Forming a first semi-reflective layer and a first recording layer on the first surface; a second substrate molding process, which uses a double-sided mold to form a first substrate having a double-sided groove, Forming a ditch structure forming a digital video disc format on a third surface of the second substrate and sequentially Page 171252482 6. A second semi-reflective layer and a second recording layer are formed on the third surface of the patent application range, and a ditch structure for forming a disc format is formed on a fourth surface of the second substrate, and Forming a total shot layer on the fourth surface; a bonding process of bonding the second recording layer of the second substrate to the second surface of the first substrate; and a protective layer forming process, It forms a protective layer on the first recording layer of the first substrate. 5mm。 The thickness of the first substrate is 0. 5mm. The thickness of the first substrate is 0. 5mm. The thickness of the second substrate is about 0.6 mm, as described in the invention. 1 . The method of manufacturing a composite optical disc according to claim 9 , wherein the protective layer has a thickness of about 0.1 mm. The method of manufacturing a composite optical disc according to claim 9, wherein the bonding procedure is performed by using an ultraviolet curing sol. The method of manufacturing a composite optical disc according to claim 9, wherein the fourth surface further comprises a third recording layer formed on the fourth surface and the total reflection layer between. The invention relates to a method for manufacturing a composite optical disc according to claim 9, wherein the first recording layer and the second recording layer comprise an organic dye and a metal substance. At least one of them. The composite optical disc manufacturing method according to claim 14, wherein the third recording layer comprises at least one of an organic dye and a metal substance. The composite optical disc manufacturing method according to claim 9, wherein the protective layer is formed on the first recording layer of the first surface by spin coating. The method of manufacturing a composite optical disc according to claim 9, wherein the protective layer is formed on the first recording layer of the first surface by a sheet bonding method. Page 19