Tdk Corporation

Hiroshi Shingai

Tatsuya Kato

Hajime Utsunomiya

Jiro Yoshinari

Hideki Hirata

Masanori Kosuda

Hiroyasu Inoue

Takashi Kikukawa

Hideaki Miura

Tetsuro Mizushima

Takuya Tsukagoshi

Yoshihisa Tamagawa

Motohiro Sakurai

Yoshitomo Tanaka

Hiroshi Takasaki

Hironori Kakiuchi

Hiroshi Chihara

Yoshinori Sato

Minoru Fujita

Kenji Yamaga

Masahiro Oishi

Shinji Miyazaki

Akinori Nishizawa

Shouhei Harada

Katsuaki Yanagiuchi

Jajime Utsunomiya

Takao Saito

Yoshihiko Tanabe

A transparent conductor includes a transparent substrate, a first metal oxide layer, a metal layer containing a silver alloy, a third metal oxide layer, and a second metal oxide layer in the order presented. The first metal oxide layer is composed of a metal oxide which is different from ITO, the second metal oxide layer contains ITO, and the work function of the surface of the second metal oxide layer opposite to the metal layer side is 4.5 eV or higher.

Transparent conductor and organic device

The transparent conductor involves a first laminate part including a transparent resin substrate and a transmittance-controlling layer, and a second laminate part including the transparent resin substrate, the transmittance-controlling layer, a metal layer containing silver or a silver alloy, and a metal oxide layer in the order presented. The first laminate part and the second laminate part are adjacent to each other in a direction perpendicular to the direction of lamination of the first laminate part and the second laminate part, and the difference between the transmittance of the first laminate part in the direction of lamination, T, and the transmittance of the second laminate part in the direction of lamination, T, (T&#x2212;T) is 4% or more.

Transparent conductor, method for producing same, and touch panel

Provided is a transparent conductor including a transparent resin substrate, a first metal oxide layer, a metal layer containing a silver alloy, and a second metal oxide layer laminated in the order presented, wherein the second metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide.

Transparent conductor and touch panel

The transparent conductor includes a transparent resin substrate, a first metal oxide layer, a metal layer containing a silver alloy, and a second metal oxide layer in the order presented. The first metal oxide layer contains zinc oxide, indium oxide, and titanium oxide, and the content of SnOin the first metal oxide layer is 40 mol % or less with respect to the total of four components of zinc oxide, indium oxide, titanium oxide, and tin oxide in terms of ZnO, InO, TiO, and SnO, respectively. The second metal oxide layer contains the four components, and the content of SnOin the second metal oxide layer is 12 to 40 mol % with respect to the total of the four components in terms of ZnO, InO, TiO, and SnO, respectively.

Transparent conductor

The transparent conductor includes a transparent substrate, a first metal oxide layer, a metal layer, and a second metal oxide layer laminated. At least one of the first and the second metal oxide layers contains four components of AlO, ZnO, SnO, and GaO. X, Y, and Z are within a region surrounded by line segments between point a, point b, point c, point d, point e, and point f, in terms of (X, Y, Z) coordinates shown in a ternary diagram in FIG., or on the line segments where X is a total molar ratio of the AlOand the ZnO, Y is a molar ratio of the SnO, and Z is a molar ratio of the GaO, relative to the total amount of the four components. A molar ratio of the AlOrelative to the total amount of the four components is 1.5 to 3.5% by mole.

A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbTeGeelements and elemental ratios. Y satisfies 5&#x2266;y&#x2266;15 and z satisfies 5&#x2266;z&#x2266;15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4&#x2266;a&#x2266;15. The interface layer comprises of ZrO&#x2014;CrOfilm thickness of which is in a range of from 2 nm to 10 nm. When ZrO:CrO&#x2550;C:D (mol %), the compositional ratios ZrOand CrOin the ZrO&#x2014;CrOfilm, holds, the C satisfies 20&#x2266;C&#x2266;90, and the D satisfies 10&#x2266;D&#x2266;80, and the C and the D satisfy C+D=100. The ZrOis stabilized ZrOwhich contains YO, when ZrO:YO=(100&#x2212;X):X (mol %), the compositional ratios ZrOand YOin the stabilized ZrO, holds, the X satisfies 2&#x2266;X&#x2266;10.

Optical recording medium and recording film material

An optical recording medium is provided which includes two or more information layers in which an Sb-based eutectic material is used as the material for a recording film of a translucent information layer. There is also provided a recording film material for the optical recording medium. The translucent information layer is configured to include a recording film formed of a phase change material SbGeIncontaining Sb, Ge, and In in an atomic ratio of x:y:z, where 5&#x2266;y&#x2266;15 and 4&#x2266;z&#x2266;15 are satisfied. The recording film further includes Te in an atomic ratio of a, provided that x+y+z+a=100 and 4&#x2266;a&#x2266;15 are satisfied. An interface layer formed of a ZrO&#x2014;CrOfilm having a thickness of 2 nm or more and 10 nm or less is provided on the laser beam incident side of the recording film. When the compositional ratio of the ZrO&#x2014;CrOfilm is given by ZrO:CrO=B:C (mol %), 20&#x2266;B&#x2266;90, 10&#x2266;C&#x2266;80, and B+C=100 are satisfied.

An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength &#x3bb; of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size Pof up to 0.36&#x3bb;/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength &#x3bb; of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size Pof up to 0.36&#x3bb;/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

Information readout method for non mask layer type optical information medium

A method of recording data on a double-layer optical recording medium having a recording layer with high light transmittance is provided. A laser beam is modulated to emit a pulse series of laser including a write pulse of a write power and a cooling pulse of a bottom power, so as to encode and write data to be recorded as recording marks of a length nT along a track of the recording layer, where n is an integer and T is one clock cycle. An nT recording mark is formed using (n&#x2212;1) write pulse(s), and when forming a recording mark of 4 T or longer, a cooling pulse with a pulse width of 0.8 T to 2 T is inserted before the last write pulse. Recording marks are thereby accurately formed without heat interference between consecutive recording marks and cross erase between recording marks of adjacent tracks.

Method of recording data on optical recording media and optical recording device

In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA&#xb7;Pwherein Pis the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The medium enables reading at a high resolution beyond the diffraction limit.

Optical information medium including an information bearing surface and a functional layer, and reading method

A method for recording information on an optical recording medium is provided so that it is satisfied that 0.16&#x2266;(L&#xd7;T)/(&#x3bb;/NA)&#x2266;0.30 and 0.06&#x2266;(L&#xd7;T)/(&#x3bb;/NA)&#x2266;0.14, where &#x3bb; is a write wavelength of a laser beam used to irradiate the recording layer of a phase-change optical recording medium, NA is a numerical aperture of an objective lens used for irradiation with the laser beam, Lis a relative speed between the objective lens and the optical recording medium, Tis a pulse time of a cooling pulse inserted immediately following a leading write pulse, and Tis a leading write pulse time. The method allows for forming a record mark with a good shape and prevents fluctuations at the front edge of the record mark, which would be otherwise caused by the recrystallization of the recording film being held at a high temperature.

Method for recording information on optical recording medium

An optical recording medium and a method for testing that optical recording medium are provided, which can prevent degradation of a reproduction signal in the case where the optical recording medium is stored at a high temperature for a long time, which enables stable recording and reproduction of data before and after the high-temperature storage, and which can achieve high-speed recording and increase of recording density. In the optical recording medium, a reproduction signal output of a recording mark after high-temperature storage that is formed in a recording layer after the optical recording medium is stored at a storage temperature t in a range from 60&#xb0; C. to 90&#xb0; C. for at least 50&#x2212;(4/3)(t&#x2212;60) hours is 0.9 times or more a reproduction signal output of a recording mark before the high-temperature storage that has the same bit length as the recording mark after the high-temperature storage and is formed before the above high-temperature storage.

Optical recording medium and a method for testing the same

The optical recording medium is an optical recording medium having at least one information layer including a recording film, characterized in that the recording film is formed by a phase change material including at least Sb, Ge and Mg as main components.

Optical recording medium

An optical recording medium includes an information layer having a recording film. The recording film contains Sb of 79 atomic % to 95 atomic % and Ge of 5 atomic % to 21 atomic % as main components, and is formed of a phase change material which does not contain the elements in the sixteenth group of the periodic table.

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Tokyo, Japan

Hiroshi Shingai