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Sub-wavelength dielectric grating optical filter, liquid crystal display equipment and preparation method thereof

A sub-wavelength and optical filter technology, applied in the direction of optical filters, optics, optical components, etc., can solve problems such as poor light transmission, and achieve the effect of solving complex processes

Inactive Publication Date: 2021-03-09
ANHUI SEMICON INTEGRATED DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The solution in the prior art adopts the metal circular hole design, which has poor light transmission and utilizes the surface plasmon effect

Method used

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  • Sub-wavelength dielectric grating optical filter, liquid crystal display equipment and preparation method thereof
  • Sub-wavelength dielectric grating optical filter, liquid crystal display equipment and preparation method thereof
  • Sub-wavelength dielectric grating optical filter, liquid crystal display equipment and preparation method thereof

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Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0024] figure 1 It is a structural schematic diagram of a sub-wavelength dielectric grating filter of the present invention, such as figure 1 As shown, the sub-wavelength dielectric grating filter includes: a silicon oxide isolation layer 1 placed on the packaged drive circuit substrate 3, wherein the silicon oxide isolation layer 1 is deposited on the drive circuit substrate 3 and a dielectric grating layer 2, placed on the isolation layer, and configured to be obtained by photolithography and etching from a high refractive index medium, wherein the dielectric grating layer 2 is configured to be in a periodic pattern, The dielectric grating layer 2 is obtaine...

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Abstract

The invention relates to the field of grating structures, in particular to a sub-wavelength dielectric grating optical filter, liquid crystal display equipment and a preparation method thereof. The sub-wavelength dielectric grating optical filter comprises a silicon oxide isolation layer which is arranged on a packaged driving circuit substrate; and a dielectric grating layer which is arranged onthe isolation layer and is configured to be obtained by photoetching and etching a high-refractive-index medium, wherein the dielectric grating layer is configured to be in a periodic pattern. By means of the resonance phenomenon of the periodic pattern grating of the high-refractive-index medium, the medium is better in light transmission and higher in brightness compared with metal.

Description

technical field [0001] The invention relates to the field of grating structures, in particular to a sub-wavelength dielectric grating filter, a liquid crystal display device and a preparation method thereof. Background technique [0002] A color filter using surface plasmons, a liquid crystal display device and a manufacturing method thereof are disclosed in the prior art regarding this kind of filter, the color filter includes: a metal layer; and a transmission pattern formed in the metal layer , the transmission pattern includes a plurality of subwavelength holes with a period, wherein light of a desired color is output by selectively transmitting light of a specific wavelength by using surface plasmons, and the plurality of subwavelength holes are arranged in a triangular lattice , the triangular lattice has a predetermined number of holes closest to the central hole. [0003] The solution in the prior art adopts a metal circular hole design, which has poor light transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02B5/00G02F1/1335
CPCG02B5/204G02B5/008G02F1/133514G02F1/133516
Inventor 吕迅
Owner ANHUI SEMICON INTEGRATED DISPLAY TECH CO LTD