(Chih-Yu Chao)

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????? ??? ?? (Chih-Yu Chao) e-mail
cychao_at_phys.ntu.edu.tw
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Method of Manufacturing Polarizer -Dip-pen
Lithography Technology
Traditional Polarizer
High extinction ratio - perfect alignment High
transmission - non-absorption type
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Process of Dip-pen lithography technology
(30nm)
Merits of Dip-pen lithography technology

• Free of uniaxial enlogtation
• O- and E-mode available
• Potential of LC cell processing integration

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Method of Manufacturing Polarizer Microcontact
Printing (?CP)
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Advantage of Photo-spacer
Ball spacer
Photo spacer
- Glass Spacer or Plastic Spacer
etc. - Random Distribution - Cause
Diffraction - Lowering Contrast
- Lithography Process -
Uniform Distribution on TFT
- Easy Cell Gap Control
Black Matrix
Glass
Over-Coat
Alignment Layer
ITO
Spacer
Glass
Spacer
TFT
Schematic Diagram of TFT-LCD using Spacer
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Method of Manufacturing LCD Photo-
spacer -Microcontact Printing Method (?CP)
Process of ?CP technology
Disadvantages of photolithography
Pillar appearance control
Merits of ?CP Technology

• Lowest material consumption
• -save cost
• Available pillar shape control

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Method of Manufacturing LCD Photo-spacer using
Imprinting Lithography

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Si-backplane reflective LCD (LCoS)
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Si-backplane Projection TV
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Method of Manufacturing Front Light for
Transreflective LCD Electrostatic Lithography
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• Electrical Field Transfer

Transreflective LCD Front Light
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New Applications of Flexible/Roll-up Displays,
E-book E-paper
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Electronic Papers Books
1. Electrophoretics E-Ink Technology
2. Xerox PARCs Ball True Bistability
Our Strategy is ?
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Micro Cavity Array for PD-LCD
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Method of Manufacturing micro cavity array by
using electrostatic lithography
Micro Cavity Arrays for PDLC Displays
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Grating Color Filters for LCDs
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• Principle of Grating Color Filters (CFs)
  Non-absorptive Polarizer

• B. Layet, Stripe Color Separation w/ Diffractive
  Optics, Applied Optics (1999).

• Method of Manufacturing CFs using Soft
  Lithography

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Grating Color Filters for LCDs

• Method of Manufacturing CFs using Electrostatic
  Lithography

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Nanotechnology in LCD Applications
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• ? Nanotechnology for LC Alignment
• ? Nanotechnology for LC Filling
• ? Nanotechnology for Optical Films Components
• (WVA Films, Diffusor, Collimator, etc.)
• ? Nanotechnology for MicroDisplays (LCoS)
• ? Nano-Optics for LCD New Modes
• ? Nano Dopping Technique for Fast-Response LCD
• ? Many Other Potential Nano Technologies.