Plasmonic color filter
A plasmon and color filter technology, applied in the field of color filters, can solve the problem of low spectral tuning sensitivity
Active Publication Date: 2022-01-28
JIHUA LAB
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Problems solved by technology
[0003] In the prior art, color filters based on the surface plasmon effect mainly include (like) metal / dielectric nano-resonators, (like) metal-medium-(like) metal composite structures, etc., and are usually used in visible light The resonator is made of materials with normal dispersion optical properties in the wavelength band, and the sensitivity of spectral tuning is low
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[0029] The present invention will be described in detail below in conjunction with specific embodiments.
[0030] Such as figure 1 As shown, the plasmonic color filter of this embodiment includes several color filter units 1, these color filter units 1 are arranged in multiple rows along the X-axis direction, and are arranged in multiple columns in the Y-axis direction, and the X-axis and the Y-axis are perpendicular to each other . Such as figure 2 As shown, each color filter unit 1 includes a reflective layer 11, an intermediate layer 12, and a resonator 13. In the longitudinal direction, the reflective layer 11, the intermediate layer 12, and the resonator 13 are stacked in sequence to form a (like) metal-medium- (Like) metal composite structure, where the longitudinal direction is the Z-axis direction, and the Z-axis, X-axis, and Y-axis form a three-dimensional rectangular coordinate system. The resonator 13 is made of a material with anomalous dispersion optical prope...
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Abstract
The plasmonic color filter relates to the field of color filter technology, which includes several color filter units, each color filter unit includes a longitudinally stacked reflective layer, an intermediate layer and a resonator, and the resonator is composed of Made of materials with anomalous dispersion optical properties. The resonator, the intermediate layer and the reflective layer constitute a structural system supporting gap plasmons. When the incident light in the visible light band is irradiated on the structural system from the resonator side, the energy is highly localized in the intermediate layer (that is, the resonator and In the gap between the reflective layers), the gap plasmon resonance is excited, thereby realizing the selective absorption of specific wavelength bands in the visible light band. The property of the anomalous dispersion of the resonator will enhance the gap plasmon resonance of this structural system, so that the response to the change of the gap between the resonator and the reflective layer is more severe, that is, the same scale of the gap change can cause Greater spectral modulation across the range, thereby increasing spectral tuning sensitivity.
Description
technical field [0001] The invention relates to the technical field of color filters. Background technique [0002] Color filters based on artificial microscopic ordered structures deal with light absorption and reflection through light interference and diffraction effects, so as to filter specific light bands, and are widely used in anti-counterfeiting, display, information storage and other fields. In recent years, the color filter using the surface plasmon effect of the subwavelength structure can break through the traditional optical diffraction limit, realize the manipulation of light on the nanometer scale, and obtain higher optical resolution. It has a good application prospect in the field of display demand. [0003] In the prior art, color filters based on the surface plasmon effect mainly include (like) metal / dielectric nano-resonators, (like) metal-medium-(like) metal composite structures, etc., and are usually used in visible light The resonator is made of mate...
Claims
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IPC IPC(8): G02B5/00G02B5/28
CPCG02B5/008G02B5/284
Inventor 郑梦洁董君
Owner JIHUA LAB