Continuous color reflective displays using interferometric absorption

Hong, John; Chan, E.; Chang, T. H. P.; Fung, Tze-Ching; Hong, Brandon; Kim, Cheonhong; Ma, Jun; Pan, Yanqun; Lier, Rob van; Wang, Shen-Ge; Bing, Wei; Zhou, Lixia

doi:10.1364/optica.2.000589

Cited by 43 publications

(41 citation statements)

References 8 publications

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“…At the peak reflection wavelength λ c , the absorber layer should be placed at the position where E (λ c ) ≈ 0 to minimize absorption loss and achieve high reflectivity. Thus, the thickness of the middle dielectric layer should be

d_{4} = \frac{λ_{normalc}}{2 n_{4}}

, assuming the bottom reflective layer is a perfect electric conductor for simplicity . Moreover, to increase the contrast, the top AR layer is usually employed to reduce reflection in the off‐peak region by introducing an additional resonant cavity.…”

Section: Design Principle and Resultsmentioning

confidence: 99%

“…Structural colors arising from resonant interactions between light and nanostructures have received increasing interest recently owing to their potential applications in various areas including color printing, display/imaging, optical decoration, solar cells, and so forth. In contrast to existing color filters exploiting chemical colorant pigments or organic dyes, structural color filters offer unique advantages of nontoxicity, no‐fading color, thin thickness, great scalability, high resolution, and easy tunability .…”

Section: Introductionmentioning

confidence: 99%

“…are limited due to both the high loss of the cavity material and the inadequate absorption at the unwanted wavelengths. Hong et al demonstrated a single mirror interferometric display technology by utilizing microelectronic mechanical system actuation devices to control the spacer layer thickness in real time . Although the obtained RGB reflective color filters exhibit fairly high color purity (FWHM of ≈70 nm) and brightness (the maximum reflectivity over 85%), multilayer dielectric coatings (a total of eight thin films in their structures) are required to enhance the absorption of nontargeted colors, which makes the design and fabrication process complicated.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancing the Purity of Reflective Structural Colors with Ultrathin Bilayer Media as Effective Ideal Absorbers

Yang

Liu

et al. 2019

Advanced Optical Materials

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Structural colors of high purity and brightness are desired in various applications. This study presents a general strategy of selecting the appropriate material and thickness of each layer to create high‐purity reflective colors in a classic asymmetric Fabry–Pérot cavity structure based on a dielectric–absorber–dielectric–metal multilayered configuration. Guided by the derived complex refractive index of the ideal absorber layer, an effective absorbing bilayer medium consisting of two ultrathin lossy films is used to improve the color purity of reflective colors by suppressing the reflection of its complementary colors with the enhanced optical absorption. Highly pure red, green, and blue reflective colors are designed and experimentally demonstrated employing different effective bilayer absorbers. Due to the high refractive index of the dielectric material, the colored structures exhibit great angle‐robust appearance (blue and red colors are up to ±60°, and green color is up to ±45°). The generalized design principles and the proposed method of using effective bilayer absorbers open up new avenues for realizing high‐purity thin‐film structural colors with more materials selections.

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d_{4} = \frac{λ_{normalc}}{2 n_{4}}

Section: Design Principle and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing the Purity of Reflective Structural Colors with Ultrathin Bilayer Media as Effective Ideal Absorbers

Yang

Liu

et al. 2019

Advanced Optical Materials

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“…However, having a single‐cell tunable‐color pixel design, which can generate all primary colors, is always desirable for high pixel density displays . An example of this is a single mirror interferometric (SMI) display, where a moving MEMS mirror is used to tune the pixel color in the visible spectrum . Having movable objects, however, has proven to be a major limitation of these devices in terms of durability, switching power consumption, and reliability in response to mechanical shocks in portable electronics.…”

Section: Introductionmentioning

confidence: 99%

A Reconfigurable Color Reflector by Selective Phase Change of GeTe in a Multilayer Structure

Jafari

Guo

Rais‐Zadeh

2019

Advanced Optical Materials

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It is shown that a phase change material (PCM), germanium telluride (GeTe), when integrated into a subwavelength layered optical cavity, can produce widely tunable reflective colors. It is shown that the crystallization temperature (Tx) of GeTe is dependent on the film thickness for thin films of less than ≈20 nm, which is exploited for color tuning. Four colors from the same physical structure are demonstrated by electrical heating, through novel optical and thermal engineering of a thin film stack that includes two GeTe layers with only a single integrated joule heater element. The selective sensitivity to incident light angle and low polarization dependence, as well as the low static power consumption of this device make it a good candidate for potential consumer electronics applications.

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“…Among the plentiful research subjects in the big family of plasmonic metamaterials, one of the intensively investigated topics in recent decades is the design of color filters [14][15][16][17][18][19][20][21][22][23][24][25], where a specific color is observed if the scattered light of a particular wavelength range comes into our eyes when an object is illuminated with white light. By exploiting the plasmonic subwavelength structures, such as nanohole or nanoparticle arrays [1,14], light transmission/reflection can be selectively enhanced or hindered at a resonant wavelength.…”

Section: Introductionmentioning

confidence: 99%

Color display and encryption with a plasmonic polarizing metamirror

Song

et al. 2017

Nanophotonics

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Abstract:Structural colors emerge when a particular wavelength range is filtered out from a broadband light source. It is regarded as a valuable platform for color display and digital imaging due to the benefits of environmental friendliness, higher visibility, and durability. However, current devices capable of generating colors are all based on direct transmission or reflection. Material loss, thick configuration, and the lack of tunability hinder their transition to practical applications. In this paper, a novel mechanism that generates high-purity colors by photon spin restoration on ultrashallow plasmonic grating is proposed. We fabricated the sample by interference lithography and experimentally observed full color display, tunable color logo imaging, and chromatic sensing. The unique combination of high efficiency, highpurity colors, tunable chromatic display, ultrathin structure, and friendliness for fabrication makes this design an easy way to bridge the gap between theoretical investigations and daily-life applications.

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Continuous color reflective displays using interferometric absorption

Cited by 43 publications

References 8 publications

Enhancing the Purity of Reflective Structural Colors with Ultrathin Bilayer Media as Effective Ideal Absorbers

Enhancing the Purity of Reflective Structural Colors with Ultrathin Bilayer Media as Effective Ideal Absorbers

A Reconfigurable Color Reflector by Selective Phase Change of GeTe in a Multilayer Structure

Color display and encryption with a plasmonic polarizing metamirror

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