KR20030069397A - having tone of diverse color of color layer for optical disk - Google Patents

Abstract

PURPOSE: An optical disk having various colors of color layers is provided to prevent damage and lowering of data due to low reflectivity and refraction of light, thereby accurately reading data. CONSTITUTION: A printing layer(10) is provided to print an image or characters on a surface of an optical disk(50). Transparent layers(40) are formed by processing a transparent plane formed under the printing layer with lacquer or leaving the transparent plane as it is. Reflective film layers(30) are formed under the transparent layers to reflect external light. In the case of a DVD, an adhesive layer(70) is formed by filling an adhesive for combining the reflective film layers. A color layer(60) is formed under the transparent layer, having various colors.

Description

Having a tone of diverse color of color layer for optical disk}

The present invention relates to an optical disc having a variety of color layers, and more particularly, to improve the aesthetics of the optical disc and at the same time meet the needs of consumers, and to provide a variety of color layers using new materials on the optical disc. The present invention relates to an optical disc having a color layer of various colors, which does not read an accurate data signal due to refraction, does not have uniformity of color due to diffraction of light, and allows data to be read smoothly due to low reflectance.

In general, an optical disk refers to a disk-shaped disk that irradiates a laser beam to a substrate on which data is stored to receive a laser beam reflected by a reflective film coated on a surface thereof, and then reproduces the data by using the laser beam.

The optical disc DVD manufacturing process includes an injection process for injection molding a disc, and an infield / cooling process for cooling the disc to remove foreign substances and maintain a constant temperature by using a filter by transferring the disc to a rotating table. Step) and the step of transferring the disc from the step to the metallizing robot include a rotary table step, a metallization step of applying a reflective film to the disc from the step, and It can be manufactured through a bonding process for bonding disks and a spin, curling and scanner inspection process after the bonding process.

Here, the metallization process of applying a reflective film to the dask has dissolved the color of the optical disk in the interior when the pigment is injected into the PC, which is the material of the optical seek, and the color is applied. As a result, the disc is not recognized due to the decrease in the playability of the optical disc and the decrease in reflectance.

In the case of polycarbonate, a polymer material used for optical discs, data is easily transmitted and difficult to reproduce due to external factors such as low reflectance or masked scratches. Such damage has resulted in degradation of the optical disk's playability, audio / video dropout, and inability to reproduce.

The constituent layers of various colors used for optical discs including CDs and DVDs currently in use are composed of colors by dissolving dyes in raw materials and coating them simultaneously, but only one color is realized.

An example of a conventional optical disc will be described with reference to the accompanying drawings. As shown in FIGS. 1A and 1B showing a cross-sectional structure of a general optical disc, when an optical disc is to read data, laser light is irradiated onto the transparent layer 4 and the laser is irradiated. The light can be reproduced by using the signal of the light that passes through the data and returns to the reflective film layer 3 by the laser light.

It consists of the transparent layer 4 which comprises a data layer, and the reflective film layer 3 which reflects a laser beam, and the lacquer layer 2 and the printing layer 1 on it act as a protection.

In addition, since the transparent layer 4 is exposed to the outside, small particles, dust, scratches, organic matters, etc. are stuck due to static electricity, which affects the most important data of the optical disc 5 and thus cannot read and recognize accurate data. This has also occurred, resulting in shortening the life of the player for reproducing the optical disc 5.

The signal of the optical disc 5 is affected by the change in thickness, the degree of deformation of the surface, the data structure, and the like. As a factor influencing this, the DPD tracking error signal of the size DPD should be large enough to provide tracking feedback for positioning the laser head.

The magnitude of the tracking error signal is that the value must change as it moves in the center of the track. The tracking cross signal represents the worst possible detrack. The feedback loop that positions the laser head above the track center is inspected at the point of inactivity.

The laser head is moved to the circumferential inner core. The station check method is a method of checking by moving to selected parts. This part of the test is called a station. To measure high frequency signals, the laser head is moved inward and measured. Reflectance is a measure of how much light is returned compared to the light emitted from the laser head. If less light returns compared to the original light, it may cause trouble reading the correct signal.

The present invention is to solve such a conventional problem, the purpose of which is to improve the aesthetics of the optical disc and at the same time to meet the needs of consumers and to refract the light so that various color layers can be formed by using a new material on the optical disc It is to make it possible to read the data due to the low reflectance without reading the accurate data signal by the light diffraction and the uniformity of the color due to the diffraction of light.

1A is a cross-sectional view of a general optical disk.

1B is a cross-sectional view of a general optical disc DVD.

2A is a cross-sectional configuration diagram of a CD optical disc according to an embodiment of the present invention.

2B is a cross-sectional configuration diagram of a DVD optical disc according to the embodiment of the present invention.

Code descriptions for the main parts of the drawings

1,10; print layer 2,20; lacquer layer

3,30; Reflective layer 4,40; Transparent layer

5,50; optical disk 6; protective film layer

60; color layer 70; adhesive layer

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, working effects, and the like of the present invention will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment, Various changes and modifications are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments will be found.

The present invention is to allow the surface of the optical disk to have a variety of colors, as shown in Figures 2a, 2b, the printing layer 10 to print an image or text on the upper surface of the optical disk, and the printing layer ( 10) The transparent layer 40 and the lacquer layer 20 formed by treating or leaving the lacquer on a transparent plane formed at the bottom thereof, and the external light is reflected on the bottom of the transparent layer 40 and the lacquer layer 20 without passing through it. The reflective film layer 30 is formed so as to be possible.

The reflective film layer 30 is characterized in that a plurality of recesses are formed on the surface.

Here, the reflective film layer 30 is formed of a transparent layer 40 to allow light to pass through in the case of a general compact disc (CD), and a color layer 60 having various colors on the bottom surface of the transparent layer 40. Has a configuration.

In addition, the reflective film layer 30 is an adhesive layer 70 filling an adhesive so that the transparent film 40 of another optical disk 50 may adhere to the reflective film layer 30 formed on the upper surface thereof in the case of a DVD. ), And a color layer 60 having various colors formed on the bottom surface of the transparent layer 40.

Referring to the effects of the present invention configured as described in detail as follows.

As shown in the present invention, the optical disk 50 is formed of pits / land using a laser having wavelengths of 780 [nm] (for CD), 635 [nm] (for DVD), and 650 [nm] (for DVD). To allow data to be played back.

The physical characteristics of the pit / land of the optical dask are as follows.

There are 9 types (3T ~ 11T) of pit / land depending on the physical length. Record data with a total of 18 pit / land combinations.

The length of 1T is determined by linear velocity / clock frequency.

When the linear velocity is 1.2 [m / s], the length of 1T is 1.2 [m / s] /4.3218×10/s, and 0.278 [µm] and 1.4 [m / s]. s] /4.3218 x 10 / s, which is 0.324 [µm].

In other words, when the linear velocity is 1.2 [m / s], the length of 3T is 3 × 0.278 [μm] = 0.834 [μm], and the length of 11T is 11 × 0.278 [μm] = 3.058 [μm].

When the linear velocity is 1.4 [m / s], the length of 3T is 3 × 0.324 [µm] = 0.972 [µm] and the length of 11T is 11 × 0.324 [µm] = 3.564 [µm].

In case of DVD, 120mm and 80mm DVD-ROM discs include single layer (SL) and dual layer (DL), and the length of 1T is 0.147 [μm] ~ 0.440 [μm]. 1 It can record large amount of data with a small pit length, and the linear speed is 3.49 [m / s] ~ 3.84 [m / s], which also has a large capacity per unit time. The EFM + modulation method is adopted rather than the EFM modulation method, which means that more data can be recorded in the data recorder.

In addition, by forming a color layer 60 having a variety of colors on the optical disk 50 to minimize the minute influence of the data.

The color layer 60 is made of only 0.834 ~ 3.564 [㎛] length of the recording of the data to spin the data when reading the data that the user wants to have a variety of colors and contribute to the stabilization of the data.

It is possible to realize colors like seven colors of rainbows such as red on the inner circumference, blue on the yellow circumference, and not on a single color. Also, the spin diffraction method is applied to the outside using independent mode without affecting the data. In addition, it eliminates all refraction, low emissivity and interference, and adds various colors to provide a visual effect.

The DVR, another optical disk 50, can store more than 4.7GB to 25GB, adopts image compression technology, and provides visual information on digital media that can record 135 ~ 650 minutes of video and audio data. The material can be used for digital media that can realize effects and high picture quality and support resolution better than LD.

In this way, the present invention improves the aesthetic sense of the optical disc and at the same time meets the needs of consumers, and also does not read the correct data signal due to the refraction of light so that various color layers can be formed using new materials on the optical disc. There is no color uniformity due to diffraction, and it is effective to read data due to low reflectance.

Claims (3)

A print layer 10 for printing an image or a character on the upper surface of the optical disk, and a transparent layer 40 and a lacquer layer formed by treating or leaving lacquer on a transparent plane formed at the bottom of the print layer 10 ( 20), a reflective film layer 30 to reflect external light to the bottom of the transparent layer 40 and the lacquer layer 20 without passing through, and the reflective film layer 30 is a general compact disc (CD) In this case, the optical disk having a color layer of various colors formed by connecting a transparent layer 40 to allow light to pass through, and a color layer 60 having various colors on the bottom of the transparent layer 40. The optical disc of claim 1, wherein the reflective film layer has a plurality of recesses formed on a surface thereof. The reflective film layer 30 of claim 1 or 2, wherein the reflective film layer 30 is a DVD, and the bottom surface of the optical film 50 may adhere to the reflective film layer 30 having the transparent layer 40 of another optical disk 50 formed thereon. Optical disk having a color layer of a variety of colors made by combining the adhesive layer 70 to fill the adhesive so that.