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    Polarizing plate having alternately stacked layers having different deposition directions
    1.
    发明授权
    Polarizing plate having alternately stacked layers having different deposition directions 有权

    公开(公告)号：US11262491B2

    公开(公告)日：2022-03-01

    申请号：US16675777

    申请日：2019-11-06

    Applicant: Dexerials Corporation

    Inventor： Akio Takada ,  Eiji Takahashi ,  Nobuyuki Koike ,  Koji Sasaki

    IPC: G02B5/30 ,  G02F1/1335 ,  G02B5/18

    Abstract: Provided are a polarizing plate having excellent optical characteristics, and a method for manufacturing the polarizing plate. The present invention is provided with: a translucent substrate through which light passes in a working band; a bundle structure layer constituted of a columnar sheaf comprising one or more material from among dielectrics, metals, and semiconductors, the bundle structure layer being formed on the translucent substrate; an absorption layer formed on the bundle structure layer; a dielectric layer formed on the absorption layer; and a reflection layer formed on the dielectric layer and arranged as a one-dimensional lattice at a pitch that is smaller than the wavelength of the light in the working band. Because the bundle structure layer increases light absorption and light scattering, the result is that reflectivity can be reduced and excellent optical characteristics obtained.

    Block copolymer pattern formation method and diffraction limited optical element
    2.
    发明授权
    Block copolymer pattern formation method and diffraction limited optical element 有权

    公开(公告)号：US10907250B2

    公开(公告)日：2021-02-02

    申请号：US15661041

    申请日：2017-07-27

    Applicant: Dexerials Corporation

    Inventor： Eiji Takahashi ,  Akio Takada ,  Nobuyuki Koike

    IPC: C23C14/58 ,  C23C14/04 ,  C23C14/10 ,  C23C14/22 ,  C23C14/08 ,  G02B1/00 ,  G03F7/00 ,  C23C14/06

    Abstract: Provided are a block copolymer pattern formation method that enables formation, over a large area, of a block copolymer pattern with a perpendicularly oriented lamellar structure enabling nanoscale surface shape control, and a diffraction limited optical element produced using the block copolymer pattern formation method. The block copolymer pattern formation method is a method for forming a block copolymer pattern on a substrate and includes forming an oblique angle vapor deposited film on the substrate, applying a block copolymer onto the oblique angle vapor deposited film that has been formed, and subjecting the block copolymer that has been applied to perpendicularly oriented lamellar structure development post-treatment to form a pattern with a perpendicularly oriented lamellar structure.

    Wavelength plate and optical device
    3.
    发明授权
    Wavelength plate and optical device 有权

    公开(公告)号：US10317599B2

    公开(公告)日：2019-06-11

    申请号：US15070702

    申请日：2016-03-15

    Applicant: DEXERIALS CORPORATION

    Inventor： Nobuyuki Koike ,  Masatoshi Sasaki ,  Akio Takada

    IPC: G02B5/30 ,  G02F1/09 ,  G02B27/28

    Abstract: A wavelength plate, wherein first birefringent layer and second birefringent layer are laminated such that in-plane directions of optical axes of first birefringent layer and second birefringent layer cross each other, wherein the wavelength plate satisfies formulae (1), (2), (3), and (4), and wherein at least one of first birefringent layer and second birefringent layer is obliquely-deposited birefringent layer formed by oblique deposition, Δn1×t1=λ/2  (1) 1.7≤(Δn1×t1)/(Δn2×t2)≤2.7  (2) 5°≤θ1≤30°  (3) (2θ1+35°)≤θ2≤(2θ1+50°)  (4) where Δn1 represents birefringence of first birefringent layer, Δn2 represents birefringence of second birefringent layer, t1 represents a film thickness of first birefringent layer, t2 represents a film thickness of second birefringent layer, θ1 represents angle between optical axis of first birefringent layer and incident linearly polarized light, θ2 represents angle between optical axis of second birefringent layer and incident linearly polarized light, and λ represents a predetermined value in a range of wavelengths of incident light.

    PHASE DIFFERENCE COMPENSATION ELEMENT, LIQUID CRYSTAL DISPLAY DEVICE, AND PROJECTION-TYPE IMAGE DISPLAY DEVICE
    9.
    发明申请
    PHASE DIFFERENCE COMPENSATION ELEMENT, LIQUID CRYSTAL DISPLAY DEVICE, AND PROJECTION-TYPE IMAGE DISPLAY DEVICE 审中-公开

    公开(公告)号：US20180164642A1

    公开(公告)日：2018-06-14

    申请号：US15836527

    申请日：2017-12-08

    Applicant: Dexerials Corporation

    Inventor： Nobuyuki Koike ,  Akio Takada

    IPC: G02F1/13363 ,  G02F1/00 ,  G02F1/03 ,  G02F1/139

    Abstract: An object is to provide a phase difference compensation element capable of improving the contrast of a liquid crystal display device while solving the problems of a high cost, an increase in the lead time, an increase in the mounting space, and the durability. A phase difference compensation element includes: a phase difference imparting and reflection preventing layer; a first birefringence layer and a second birefringence layer in which an angle of a corner formed by a main axis of refractive index anisotropy and a surface of a transparent substrate is not 90 degrees; a third birefringence layer in which an angle of a corner formed by a main axis of refractive index anisotropy and the surface of the transparent substrate is 0 degrees, wherein, when segments acquired when the main axes of the first, second, and third birefringence layers are projected onto the transparent substrate are respectively denoted by a segment A, a segment B, and a segment C, relations of the following (1) and (2) are satisfied. (1) The angle of the corner formed by the segment A and the segment B is 45 degrees or more and 70 degrees or less. (2) The segment A and the segment C are approximately parallel with each other, or the segment B and the segment C are approximately parallel with each other.

    Polarizing plate having absorption layer comprising only tantalum and niobium
    10.
    发明授权
    Polarizing plate having absorption layer comprising only tantalum and niobium 有权

    公开(公告)号：US10732335B2

    公开(公告)日：2020-08-04

    申请号：US14904337

    申请日：2014-07-11

    Applicant: Dexerials Corporation

    Inventor： Akio Takada ,  Eiji Takahashi ,  Nobuyuki Koike ,  Koji Sasaki

    IPC: G02B5/30 ,  G02B5/18 ,  G02F1/1335

    Abstract: Provided are a polarizing plate having excellent optical characteristics, and a method for manufacturing the polarizing plate. The present invention is provided with: a translucent substrate through which light passes in a working band; a bundle structure layer constituted of a columnar sheaf comprising one or more material from among dielectrics, metals, and semiconductors, the bundle structure layer being formed on the translucent substrate; an absorption layer formed on the bundle structure layer; a dielectric layer formed on the absorption layer; and a reflection layer formed on the dielectric layer and arranged as a one-dimensional lattice at a pitch that is smaller than the wavelength of the light in the working band. Because the bundle structure layer increases light absorption and light scattering, the result is that reflectivity can be reduced and excellent optical characteristics obtained.

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