Design and Implementation of LCD Based on FPGA

Liquid crystal display (LCD) is one of the most dynamic electronic products in this century. It has been recognized as a key component of media era, since it has many characteristics, such as a low operating voltage, light volume, and excellent performance of full color display, and suitable for LSI drive and the like. In order to break the limitations of LCD, improve its animation display performance as multimedia television monitor, and strongly simplify the manufacturing to ensure the competitiveness on price, we designed a LCD module with the liquid crystal cell of TD-EDA experimental system based on FPGA, and achieved the control of LCD with hardware description language VHDL in this paper. The validation results of compiled program downloaded on programmable logic devices after compiling and simulating show that the LCD we designed can run correctly and relatively perfectly.

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Fabrication of New Liquid Crystal Device Using Layer-by-Layer Thin Film Process

Processes ◽

10.3390/pr6080108 ◽

2018 ◽

Vol 6 (8) ◽

pp. 108 ◽

Cited By ~ 2

Author(s):

Gitae Moon ◽

Wonjun Jang ◽

Intae Son ◽

Hyun Cho ◽

Yong Park ◽

...

Keyword(s):

Liquid Crystal ◽

Indium Tin Oxide ◽

Film Growth ◽

Mechanical Stability ◽

Liquid Crystal Display ◽

Layer By Layer ◽

Transparent Electrodes ◽

Ito Electrode ◽

Display Performance ◽

Layer Thin Film

Indium tin oxide (ITO) transparent electrodes are troubled with high cost and poor mechanical stability. In this study, layer-by-layer (LBL)-processed thin films with single-walled carbon nanotubes (SWNTs) exhibited high transparency and electrical conductivity as a candidate for ITO replacement. The repetitive deposition of polycations and stabilized SWNTs with a negative surfactant exhibits sufficiently linear film growth and high optoelectronic performance to be used as transparent electrodes for vertically aligned (VA) liquid crystal display (LCD) cells. The LC molecules were uniformly aligned on the all of the prepared LBL electrodes. VA LCD cells with SWNT LBL electrodes exhibited voltage-transmittance (V-T) characteristics similar to those with the conventional ITO electrodes. Although the response speeds were slower than the LCD cell with the ITO electrode, as the SWNT layers increased, the display performance was closer to the LCD cells with conventional ITO electrode. This work demonstrated the good optoelectronic performance and alignment compatibility with LC molecules of the SWNT LBL assemblies, which are potential alternatives to ITO films as transparent electrodes for LCDs.

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Wide viewing-zone-angle full-color electronic holography system using very high resolution liquid crystal display panels

10.1117/12.876763 ◽

2011 ◽

Cited By ~ 11

Author(s):

Takanori Senoh ◽

Tomoyuki Mishina ◽

Kenji Yamamoto ◽

Ryutaro Oi ◽

Taiichiro Kurita

Keyword(s):

Liquid Crystal ◽

High Resolution ◽

Liquid Crystal Display ◽

Full Color ◽

Electronic Holography ◽

Very High

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A full-color matrix liquid-crystal display with color layers on the electrodes

IEEE Transactions on Electron Devices ◽

10.1109/t-ed.1983.21157 ◽

1983 ◽

Vol 30 (5) ◽

pp. 503-507 ◽

Cited By ~ 20

Author(s):

T. Uchida ◽

S. Yamamoto ◽

Y. Shibata

Keyword(s):

Liquid Crystal ◽

Liquid Crystal Display ◽

Full Color ◽

Matrix Liquid

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Full color waveguide liquid crystal display

Optics Letters ◽

10.1364/ol.42.003706 ◽

2017 ◽

Vol 42 (18) ◽

pp. 3706 ◽

Cited By ~ 6

Author(s):

Xiaochen Zhou ◽

Guangkui Qin ◽

Long Wang ◽

Zhuo Chen ◽

Xiaoguang Xu ◽

...

Keyword(s):

Liquid Crystal ◽

Liquid Crystal Display ◽

Full Color

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Image Quality of Two-Primary Color Active-Matrix Liquid-Crystal Displays

Human Factors The Journal of the Human Factors and Ergonomics Society ◽

10.1518/001872097778667951 ◽

1997 ◽

Vol 39 (4) ◽

pp. 618-641 ◽

Cited By ~ 11

Author(s):

David L. Post ◽

William F. Reinhart

Keyword(s):

Liquid Crystal ◽

Image Quality ◽

Liquid Crystal Display ◽

Active Matrix ◽

Primary Color ◽

Aperture Ratio ◽

Full Color ◽

Series Of Experiments ◽

Matrix Liquid

The demand for color head- and helmet-mounted displays (HMDs) is growing. Interest focuses on full-color systems, but a limited color repertoire is sufficient for some applications and can reduce cost and complexity significantly, especially when subtractive-color active-matrix liquid-crystal display (AMLCD) technology is used. We report a series of experiments that investigated important questions about the design and merits of two-primary color AMLCDs for HMD applications. Our main conclusion is that the image quality of a subtractive-color AMLCD with high (≥70%) aperture ratio is superior to a comparable, conventional color AMLCD. Evidence regarding requirements for resolution, aperture ratio, and gray scale is also provided.

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FPGA-Realization of Vector Control for PMSM Drives

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.311.249 ◽

2013 ◽

Vol 311 ◽

pp. 249-254

Author(s):

Nguyen Vu Quynh ◽

Ying Shieh Kung ◽

Pham Van Dung ◽

Kuan Yuen Liao ◽

Sheng Wei Chen

Keyword(s):

Vector Control ◽

High Speed ◽

Pulse Width Modulation ◽

Control Method ◽

Experimental System ◽

Control Algorithms ◽

Description Language ◽

Field Programmable ◽

Hardware Description ◽

Very High

The design and implementation of a vector control for Permanent Magnetic Synchronous Motor (PMSM) based on Field Programmable Gate Array (FPGA) technology is presented in this paper. Firstly, a Space Vector Pulse Width Modulation (SVPWM) scheme, vector control method and PI controller are derived. Secondly, the Very-High-Speed IC Hardware Description Language (VHDL) is adopted to describe the behavior of the aforementioned control algorithms. Finally, an experimental system is setup to evaluate the effectiveness and correctness of the proposed vector controller for PMSM drives.

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