Hologram color filter, method for fabricating the same, and color liquid crystal display comprising it

A color filter and holographic technology, applied in the field of holographic color filters, can solve problems such as low diffraction efficiency of holographic films, and achieve the effects of improving heat resistance, color balance, and high brightness

Inactive Publication Date: 2008-08-13
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with green light waves, the holographic film designed according to the above principle has lower diffraction efficiency for red and blue light waves

Method used

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  • Hologram color filter, method for fabricating the same, and color liquid crystal display comprising it
  • Hologram color filter, method for fabricating the same, and color liquid crystal display comprising it
  • Hologram color filter, method for fabricating the same, and color liquid crystal display comprising it

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Embodiment Construction

[0072] First, in order to carry out the present invention, the present inventors confirmed that the refractive index can be increased by irradiating an energy beam to a light-transmitting DLC ​​film. Such DLC films can be formed on glass substrates, polymer substrates, and other various light-transmitting substrates by plasma chemical vapor deposition (CVD). Light-transmitting DLC ​​films obtained by plasma CVD generally have a refractive index of about 1.55.

[0073] Ion beams, synchrotron radiation (SR) light waves, electron beams, etc. can be used as energy beams for increasing the refractive index of the DLC film. For example, when the acceleration voltage of 800keV is 5×10 17 / cm 2 When dosing helium ions, the refractive index change Δn can be increased to about 0.65. The refractive index can also be modulated similarly by ion implantation of H, Li, B, C or the like. In addition, the refractive index change amount Δn can also be increased to a maximum of 0.65 by irrad...

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Abstract

Disclosing a hologram color filter for diffracting and dispersing the incident light by a hologram and outputting a light of different wavelength to a desired position with a specified spatial period. The hologram color filter is characterized in that it comprises a translucent diamond-like carbon (DLC) film (22) formed on a translucent substrate (21) and a stripe region of relatively low refractive index (n1, 22a) and a stripe region of relatively high refractive index (n2, 22b) are arranged alternately on the DLC film.

Description

technical field [0001] The present invention relates to a holographic color filter, and a color liquid crystal display device comprising the color filter, in particular to a holographic color filter having at least one of a spectroscopic function and a microlens function, and a color liquid crystal display device comprising the color filter improvement of. Background technique [0002] In recent years, various color liquid crystal display devices have been put into practical use. A color liquid crystal projection device is one of these color liquid crystal display devices. The color liquid crystal projection device includes various types, and each type of device uses three liquid crystal panels. More specifically, the three liquid crystal panels display red (R) optical images, green (G) optical images, and blue (B) optical images, respectively. Three optical images in different colors are combined and projected onto the screen by the optical system to form a full-color im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/32G02B5/18G02F1/1335G02B5/20
Inventor 后利彦织田一彦大久保总一郎松浦尚
Owner SUMITOMO ELECTRIC IND LTD
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