scholarly journals Simple method to evaluate the pixel crosstalk caused by fringing field effect in liquid-crystal spatial light modulators

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Ignacio Moreno ◽  
María Del Mar Sánchez-López ◽  
Jeffrey A. Davis ◽  
Don M. Cottrell
Keyword(s):  
Liquid Crystal ◽  
Diffraction Efficiency ◽  
Field Effect ◽  
Spatial Light Modulators ◽  
Physical Parameters ◽  
Light Modulator ◽  
Simple Method ◽  
Fringing Field ◽  
Fringing Field Effect ◽  
The Impact

AbstractIn this work we provide a simple experimental method to measure and evaluate the pixel crosstalk in phase-only liquid-crystal displays caused by the fringing field effect. The technique is a reverse engineering method that does not require information about the microscopic physical parameters of the liquid-crystal material or details of the fabrication and electronics of the display. Instead, it is based on the overall effect on the diffraction efficiency of displayed binary phase gratings as a function of the addressed gray level. We show how the efficiency of the zero (DC) and first diffraction orders provides valuable information enough to identify and quantify the pixel crosstalk. The technique is demonstrated with a modern phase-only liquid-crystal on silicon (LCOS) spatial light modulator (SLM), illustrating the limitations that this effect imposes to the spatial resolution of the device and providing quantitative measurement of the impact on the diffraction efficiency.

Fringing Field Effect of the Liquid-Crystal-on-Silicon Devices

2002 ◽  
Vol 41 (Part 1, No. 7A) ◽  
pp. 4577-4585 ◽  
Author(s):  
Kuan-Hsu Fan Chiang ◽  
Shin-Tson Wu ◽  
Shu-Hsia Chen
Keyword(s):  
Liquid Crystal ◽  
Field Effect ◽  
Silicon Devices ◽  
Fringing Field ◽  
Liquid Crystal On Silicon ◽  
Fringing Field Effect

Two-Dimensional Silicon/Ferroelectric Liquid Crystal Spatial Light Modulators

1995 ◽  
Vol 392 ◽  
Author(s):  
Timothy J. Drabik
Keyword(s):  
Liquid Crystal ◽  
High Performance ◽  
Frame Rate ◽  
Spatial Light Modulators ◽  
Ferroelectric Liquid Crystal ◽  
Power Performance ◽  
Light Modulator ◽  
Light Modulators ◽  
Spatio Temporal ◽  
The Impact

AbstractSpatial light modulator (SLM) technology based on commodity silicon fabrication processes and employing a thin, ferroelectric liquid crystal light modulating layer at the chip's surface, has advanced to the point of producing high-performance, practically useful devices. Electrically addressed display devices with 256 × 256 resolution, 100: 1 contrast, and 10 kHz frame rate, as well as optically addressed, “smart” SLMs that perform spatio-temporal filtering on images, have resulted in the course of the author's involvement with Displaytech, Inc.The silicon technology infrastructure is a juggernaut that produces regular and significant advances in capability. An optoelectronics technology based on foundry silicon can exploit these advances directly and realize rapid improvements. The gains in the density, speed, and optical performance of the Si/FLC devices presented here, illustrate this perspective.The favorable speed-power performance of these devices is due to an excellent match in the “terminal characteristics” of FLC materials with those of fine-line MOSFETs. The impact of these characteristics on overall device performance is discussed in some depth.

On the fringing-field effect in liquid-crystal beam-steering devices

2004 ◽  
Vol 43 (1) ◽  
pp. 11 ◽  
Author(s):  
Boris Apter ◽  
Uzi Efron ◽  
Eldad Bahat-Treidel
Keyword(s):  
Liquid Crystal ◽  
Field Effect ◽  
Beam Steering ◽  
Fringing Field ◽  
Fringing Field Effect

scholarly journals Diffraction Efficiency Characteristics for MEMS-Based Phase-Only Spatial Light Modulator with Nonlinear Phase Distribution

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 62
Author(s):  
Remington S. Ketchum ◽  
Pierre-Alexandre Blanche
Keyword(s):  
Diffraction Efficiency ◽  
High Speed ◽  
Phase Distribution ◽  
Complex Structure ◽  
Spatial Light Modulators ◽  
Light Modulator ◽  
Micro Electro Mechanical Systems ◽  
Light Modulators ◽  
Nonlinear Phase ◽  
Liquid Crystal On Silicon

Micro-electro mechanical systems (MEMS)-based phase-only spatial light modulators (PLMs) have the potential to overcome the limited speed of liquid crystal on silicon (LCoS) spatial light modulators (SLMs) and operate at speeds faster than 10 kHz. This expands the practicality of PLMs to several applications, including communications, sensing, and high-speed displays. The complex structure and fabrication requirements for large, 2D MEMS arrays with vertical actuation have kept MEMS-based PLMs out of the market in favor of LCoS SLMs. Recently, Texas Instruments has adapted its existing DMD technology for fabricating MEMS-based PLMs. Here, we characterize the diffraction efficiency for one of these PLMs and examine the effect of a nonlinear distribution of addressable phase states across a range of wavelengths and illumination angles.

Optimization of Color Fringing Field Effect Based on Three-Dimensional Optical Model

2019 ◽  
Vol 46 (7) ◽  
pp. 0703002
Author(s):  
李丹 Dan Li ◽  
张宝龙 Baolong Zhang ◽  
郭海成 Hoising Kwok
Keyword(s):  
Field Effect ◽  
Optical Model ◽  
Three Dimensional ◽  
Fringing Field ◽  
Fringing Field Effect
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