Continuous Color Reflective Display Fabricated in Integrated MEMS-and-TFT-on-Glass Process

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

doi:10.1109/jmems.2016.2621119

Cited by 12 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast to modulation devices that rely on plasmonic or electronic effects, micro-electromechanical system (MEMS)-based modulators can have wider tuning ranges albeit at a lower operating frequency. These properties make electro-optic mechanical modulators ideal for reflective-type display technologies as has been demonstrated previously with SiN membranes in Interferometric Modulator Displays (IMODs) 5 . Despite their low-power consumption and performance in bright environments, IMODs suffer from low frame rates and limited color gamut.…”

Section: Introductionmentioning

confidence: 78%

Graphene mechanical pixels for Interferometric Modulator Displays

Cartamil-Bueno¹,

Davidovikj

Centeno

et al. 2018

Nat Commun

View full text Add to dashboard Cite

Electro-optic modulators based on micro-electromechanical systems have found success as elements for optical projectors, for simplified optical spectrometers, and as reflective-type screens that make use of light interference (Interferometric Modulator Display technology). The latter concept offers an exciting avenue for graphene nanomechanical structures to replace classical micro-electromechanical devices and bring about enhancement in performance, especially switching speed and voltage. In this work we study the optical response of electrically actuated graphene drumheads by means of spectrometric and stroboscopic experiments. The color reproducibility and speed of these membranes in producing the desired electro-optic modulation makes them suitable as pixels for high refresh rate displays. As a proof of concept, we demonstrate a Graphene Interferometric Modulator Display prototype with 5 μm-in-diameter pixels that compose a high resolution image (2500 pixels per inch)—equivalent to a 5″ display of 12K—whose color can be changed at frame rates of at least 400 Hz.

show abstract

Section: Introductionmentioning

confidence: 78%

Graphene mechanical pixels for Interferometric Modulator Displays

Cartamil-Bueno¹,

Davidovikj

Centeno

et al. 2018

Nat Commun

View full text Add to dashboard Cite

show abstract

“…Most modern display systems use three or more separate subpixels (or cells) to produce a single pixel of an image. Technologies used for producing multicolor pixels include microelectromechanical (MEMS)‐based mirrors, color E‐ink, organic light emitting diodes (OLED), etc. However, having a single‐cell tunable‐color pixel design, which can generate all primary colors, is always desirable for high pixel density displays .…”

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

View full text Add to dashboard Cite

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.

show abstract

“…Various approaches have been explored to dynamically tune the resonances and color of optical cavities and metasurfaces, [ 1,19,22,24–27 ] whereof some by electrical stimuli and to modulate reflected structural colors. [ 25,28,29 ] Among these are the use of materials with electrochromic properties to modulate nano‐optical cavities and plasmonic devices. [ 3,30–32 ] As example, Peng et al.…”

Section: Introductionmentioning

confidence: 99%

“…To circumvent this issue, we need to develop reflective pixels with tuneable colors (monopixels) instead of relying on neighboring pixels with fixed colors. Various approaches have been explored to dynamically tune the resonances and color of optical cavities and metasurfaces, [1,19,22,[24][25][26][27] whereof some by electrical stimuli and to modulate reflected structural colors. [25,28,29] Among these are the use of materials with electrochromic properties to modulate nano-optical cavities and plasmonic devices.…”

mentioning

confidence: 99%

Dynamically Tuneable Reflective Structural Coloration with Electroactive Conducting Polymer Nanocavities

et al. 2021

View full text Add to dashboard Cite

Dynamic control of structural colors across the visible spectrum with high brightness has proven to be a difficult challenge. Here, this is addressed with a tuneable reflective nano‐optical cavity that uses an electroactive conducting polymer (poly(thieno[3,4‐b]thiophene)) as spacer layer. Electrochemical doping and dedoping of the polymer spacer layer provides reversible tuning of the cavity's structural color throughout the entire visible range and beyond. Furthermore, the cavity provides high peak reflectance that varies only slightly between the reduced and oxidized states of the polymer. The results indicate that the polymer undergoes large reversible thickness changes upon redox tuning, aided by changes in optical properties and low visible absorption. The electroactive cavity concept may find particular use in reflective displays, by opening for tuneable monopixels that eliminate limitations in brightness of traditional subpixel‐based systems.

show abstract

Continuous Color Reflective Display Fabricated in Integrated MEMS-and-TFT-on-Glass Process

Cited by 12 publications

References 13 publications

Graphene mechanical pixels for Interferometric Modulator Displays

Graphene mechanical pixels for Interferometric Modulator Displays

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

Dynamically Tuneable Reflective Structural Coloration with Electroactive Conducting Polymer Nanocavities

Contact Info

Product

Resources

About