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Particles, optical sheet, screen, display device, particle inspection device, particle manufacturing device, particle inspection method, particle manufacturing method, screen inspection method, and screen manufacturing method

A particle and screen technology, applied in chemical instruments and methods, particle and sedimentation analysis, optics, etc., can solve problems such as display image quality deterioration, and achieve the effect of avoiding image quality deterioration and reducing speckle

Inactive Publication Date: 2018-06-08
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Speckle is recognized as a speckle pattern, which degrades display quality

Method used

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  • Particles, optical sheet, screen, display device, particle inspection device, particle manufacturing device, particle inspection method, particle manufacturing method, screen inspection method, and screen manufacturing method
  • Particles, optical sheet, screen, display device, particle inspection device, particle manufacturing device, particle inspection method, particle manufacturing method, screen inspection method, and screen manufacturing method
  • Particles, optical sheet, screen, display device, particle inspection device, particle manufacturing device, particle inspection method, particle manufacturing method, screen inspection method, and screen manufacturing method

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Embodiment Construction

[0067] Hereinafter, an optical sheet, a screen, and a display device of the present invention will be described with reference to the drawings.

[0068] figure 1 A reflective display device 10 of this embodiment is shown.

[0069] The display device 10 of the present embodiment includes a projector 20 and a screen 40 on which image light is radiated from the projector 20 . As will be described later, the screen 40 can change the diffusion characteristics with respect to incident light over time, thereby making speckles less conspicuous. In relation to the function of such a screen 40 , the display device 10 has a power source 30 and a control device 35 . The power source 30 applies voltage to the screen 40 . The control device 35 adjusts the applied voltage from the power source 30 to control the state of the screen 40 . In addition, the control device 35 also controls the operation of the projector 20 . As an example, a general-purpose computer can be used as the control...

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Abstract

[Problem] The invention provides particles, an optical sheet, a screen, a display device, a particle inspection device, a particle manufacturing device, a particle inspection method, a particle manufacturing method, a screen inspection method, and a screen manufacturing method that are capable of reducing speckle and effectively avoiding image quality degradation associated with color change. [Solution] The particles include a first moiety (61) and a second moiety (62) that have different dielectric constants. The first moiety (61) and the second moiety (62) have different reflectance spectraor different reflectances of non-visible light wavelengths, or else have different transmittance spectra or different transmittances of non-visible light wavelengths.

Description

technical field [0001] The present invention relates to a particle, an optical sheet, a screen, a display device, a particle inspection device, and a particle manufacturing device, as well as a particle inspection method, a particle manufacturing method, a screen inspection method, and a screen manufacturing method. Background technique [0002] For example, as disclosed in Patent Document 1 and Patent Document 2, projectors using coherent light sources are widely used. As coherent light, typically, laser light excited by a laser light source is used. In the case where the image light from the projector is formed of coherent light, speckle is observed on the screen on which the image light is irradiated. Speckle is recognized as a speckle pattern and degrades display quality. In Patent Document 1, for the purpose of reducing speckle, the incident angle of image light incident on each position on the screen is changed over time. As a result, uncorrelated scattering pattern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/60G02B26/10G02B27/48G03B21/00G03B21/62
CPCG02B27/48G02B5/0242G02B3/08G02B5/0221G02B21/36G03B21/625C09K11/00G01N15/10G02B26/10G03B21/62G01N2021/558G03B21/60G03B21/00G02B27/0905G03B21/2033
Inventor 久保田翔吾仓重牧夫中津川夏织
Owner DAI NIPPON PRINTING CO LTD