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Title: Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication

Abstract

Bright-polarizer-free, active-matrix liquid crystal displays (AMLCDs) are formed on plastic substrates. The primary components of the display are a pixel circuit fabricated on one plastic substrate, an intervening liquid-crystal material, and a counter electrode on a second plastic substrate. The-pixel circuit contains one or more thin-film transistors (TFTs) and either a transparent or reflective pixel electrode manufactured at sufficiently low temperatures to avoid damage to the plastic substrate. Fabrication of the TFTs can be carried out at temperatures less than 100.degree. C. The liquid crystal material is a commercially made nematic curvilinear aligned phase (NCAP) film. The counter electrode is comprised of a plastic substrate coated with a transparent conductor, such as indium-doped tin oxide (ITO). By coupling the active matrix with NCAP, a high-information content can be provided in a bright, fully plastic package. Applications include any low cost portable electronics containing flat displays where ruggedization of the display is desired.

Inventors:
 [1];  [2];  [3];  [4]
+ Show Inventor Affiliations
  1. Mountain View, CA
  2. San Ramon, CA
  3. San Diego, CA
  4. Marlborough, GB
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
872082
Patent Number(s):
5856858
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
plastic; substrates; active; matrix; liquid; crystal; display; incapable; withstanding; processing; temperature; 200; degree; method; fabrication; bright-polarizer-free; active-matrix; displays; amlcds; formed; primary; components; pixel; circuit; fabricated; substrate; intervening; liquid-crystal; material; counter; electrode; the-pixel; contains; thin-film; transistors; tfts; transparent; reflective; manufactured; sufficiently; temperatures; avoid; damage; carried; 100; commercially; nematic; curvilinear; aligned; phase; ncap; film; comprised; coated; conductor; indium-doped; oxide; ito; coupling; high-information; content; provided; bright; package; applications; cost; portable; electronics; containing; flat; ruggedization; desired; plastic substrate; avoid damage; active matrix; film transistors; crystal material; counter electrode; liquid crystal; substrate coated; plastic substrates; primary component; crystal display; processing temperature; thin-film transistors; transparent conductor; film transistor; active-matrix liquid; /349/

Citation Formats

Carey, Paul G, Smith, Patrick M, Havens, John, and Jones, Phil. Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication. United States: N. p., 1999. Web.
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Carey, Paul G, Smith, Patrick M, Havens, John, & Jones, Phil. Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication. United States.
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Carey, Paul G, Smith, Patrick M, Havens, John, and Jones, Phil. Fri . "Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication". United States. https://www.osti.gov/servlets/purl/872082.
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@article{osti_872082,
title = {Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication},
author = {Carey, Paul G and Smith, Patrick M and Havens, John and Jones, Phil},
abstractNote = {Bright-polarizer-free, active-matrix liquid crystal displays (AMLCDs) are formed on plastic substrates. The primary components of the display are a pixel circuit fabricated on one plastic substrate, an intervening liquid-crystal material, and a counter electrode on a second plastic substrate. The-pixel circuit contains one or more thin-film transistors (TFTs) and either a transparent or reflective pixel electrode manufactured at sufficiently low temperatures to avoid damage to the plastic substrate. Fabrication of the TFTs can be carried out at temperatures less than 100.degree. C. The liquid crystal material is a commercially made nematic curvilinear aligned phase (NCAP) film. The counter electrode is comprised of a plastic substrate coated with a transparent conductor, such as indium-doped tin oxide (ITO). By coupling the active matrix with NCAP, a high-information content can be provided in a bright, fully plastic package. Applications include any low cost portable electronics containing flat displays where ruggedization of the display is desired.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}
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