Inorganic polarizing plate and production method thereof

A polarizing plate, inorganic technology, applied in optics, polarizing elements, optical elements, etc., can solve the problem of no light source and so on

Active Publication Date: 2020-02-07
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is such a problem that when trying to make the spacing between the metal lines 100nm, there is no light source available for practical use

Method used

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  • Inorganic polarizing plate and production method thereof
  • Inorganic polarizing plate and production method thereof
  • Inorganic polarizing plate and production method thereof

Examples

Experimental program
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Effect test

example

[0174] Examples of the present invention will be described below, but these examples should not be construed as limiting the scope of the present invention.

[0175] Electromagnetic field simulations were performed by rigorous coupled wave analysis using a Gsolver grating analysis simulator (Grating Solver Development Co.).

[0176] (simulation 1)

[0177] confirmed that due to changing the gap (G L ) and gap (G R ) The change in light transmittance caused by the difference between. Specifically, by changing the metal wire (W) and the metal wire (W L ) and the gap between the metal wire (W) and the metal wire (W R ), where these metal lines are composed of aluminum, to simulate the change in light transmittance.

[0178] A schematic cross-sectional view of the structure of the wire grid layer used for this simulation is in Figure 3A Presented in , simulated conditions and decrease in transmittance (decrease in transmittance) are presented below.

[0179] Table 1-1

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Abstract

An inorganic polarizing plate, containing: substrate transparent to light of bandwidth for use; and wire grid layer containing metal wires aligned on the substrate with gaps shorter than wavelength of the light, the plate satisfying formulae (1) to (3): 0 nm<(DR−DL)  Formula (1); 0 nm<|GR−GL|  Formula (2); and 0.90≦̸SR / SL≦̸1.30  Formula (3), where DL is distance along thickness direction of the substrate in region RL between one metal wire W and metal wire WL next to W in the wire grid layer, and DR is distance along the thickness direction of the substrate in region RR between W and metal wire WR provided next to W and at opposite side to side where WL is provided; GL is gap between W and WL, and GR is gap between W and WR; and SL is ratio of DL to GL, and SR is ratio of DR to GR.

Description

technical field [0001] The invention relates to an inorganic polarizing plate and a production method thereof. Background technique [0002] Polarizers, which polarize light in a specific direction and pass only polarized light, are used in liquid crystal displays. [0003] As for the polarizing plate, a polarizing film is widely used, which is prepared by adsorbing an iodine compound on a polyvinyl alcohol (PVA) film, and stretching and orienting the resulting product, thereby exhibiting linear dichroism of absorption of visible light . This polarizing film is sandwiched on both sides with a transparent film such as triacetyl cellulose (TAC) to ensure mechanical strength, heat resistance, and moisture resistance, and is treated with a non-slip and abrasion-resistant coating on it to prevent scratches, or dust deposits. [0004] Among the light rays incident on the polarizing film, the polarized components of the light rays not passing through the polarizing film are abso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30
CPCG02B5/3058C23C16/44C23C16/45525
Inventor 花岛直树
Owner DEXERIALS CORP
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