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Copyright 2005

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Slide 2 Copyright 2005

CRT LCD

CRT( ) LCD( )

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Slide 3 Copyright 2005

CRT LCD

CRT( )

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Slide 4 Copyright 2005

FPD

FPD( )

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Slide 5 Copyright 2005

Future Display( )

Flexible Display( )

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Slide 7 Copyright 2005

v

(Electronic Controlled Light

Modulator)

Backlight Polarizer PolarizerColor

Plate

Liquid Crystal

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Slide 8 Copyright 2005

PDLC(Polymer Dispersed LC, )Polarizers are not

required

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Slide 9 Copyright 2005

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10/78Slide 10 Copyright 2005

Source Color TFT Liquid Crystal Displays,

T.Yamazaki etc., 1996

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11/78Slide 11 Copyright 2005

~5m

?

V

T

?

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12/78Slide 12 Copyright 2005

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13/78Slide 13 Copyright 2005

(Phase Transition)

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14/78Slide 14 Copyright 2005

(Phase Transition)

T:

(Position Order)

(Isotropic)

(Rod-Like)

(Direction Order)

(Position Order)

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15/78Slide 15 Copyright 2005

(mesophase)

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16/78Slide 16 Copyright 2005

(Thermotropic) : (Nematic), (Smectic) A,

Smectic C, Smectic C*

(Lyotropic)

(Disk-like), (Rod-Like)

Smectic A Smectic C

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17/78Slide 17 Copyright 2005

X Y R'R

R R

R

R

R

R

O O

OO

N

H

N

H

R R

1. Rod-like

2. Disc-like

3. Bowlic

4. Banana

O O

OO

N

H

N

H

R R

CH3

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18/78Slide 18 Copyright 2005

(Nematic)

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19/78Slide 19 Copyright 2005

(Order Parameter)

(Director)

T:

TNI (TC)

S 01

n

Tm

1=nn

>

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20/78Slide 20 Copyright 2005

(Order Parameter) S,

)1(TcTS =

25.0

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21/78Slide 21 Copyright 2005

(Director) n,

(Director)

xy

z

)(znn =

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22/78Slide 22Copyright 2005

(Anisotropic)

(Mechanical)

(Elastic Constant)

(Electrical)

(Dielectric Constant)

(Optical)

(Refractive Index)

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23/78Slide 23Copyright 2005

(Continuum Theory)

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24/78Slide 24 Copyright 2005

(Deformation)

x1

x2

x3 ),,( 321 nnnn =

j

i

x

n

),,( 321 xxxr =

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25/78Slide 25 Copyright 2005

(Free Energy)

(Spray)

(Twist)

(Bend)

)( , jidd nff =j

iji

x

nn

,

)]()()([2

1332211 nnKnnKnKfd

++=

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26/78Slide 26 Copyright 2005

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27/78Slide 27 Copyright 2005

2SKii

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28/78Slide 28 Copyright 2005

IPS (In-Plane Switching)

z

y

x

)0),(sin),((cos)( zzzn =

2

22 ))((

21

dzzdKfd =

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Slide 29 Copyright 2005

= dfF d

0=F

))((,

rnffjidd

=

)(rn

Eular-Langrange

Equation

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Slide 30 Copyright 2005

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Slide 31 Copyright 2005

= fdF ...

ffff ed ++=

0=F

))((,

rnffji

=

)(rn

Eular-Langrange

Equation

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Slide 32 Copyright 2005

E

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

EDfe =2

1

EnD = )(

22 )(2

1

2

1EnEfe

=

=

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Slide 33 Copyright 2005

E

+- +-

E

0

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Slide 34 Copyright 2005

S

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Slide 35 Copyright 2005

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Slide 36 Copyright 2005

(Homogeneous)

v)(z

z

y

x

d

))(sin,0),((cos zzn =

0)()0( == d

0cossin)(cossin)())(sincos(22

11332

22

33

2

11 =+++

Edz

dKK

zd

dKK

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Slide 37 Copyright 2005

Freedericksz Transition (Threshold Voltage)

=11

K

d

Eth

= 11KVth

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Slide 38 Copyright 2005

TN(Twist-Nematic)

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(Polarized Light)

(Optical Axis)

e-ray o-ray

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Slide 41 Copyright 2005

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Slide 42 Copyright 2005

o-ray(

)

e-ray(

) (Anisotropic) Maxwell Equation

ne

no

oe nnn =

ED =

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Slide 43 Copyright 2005

Sn

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Slide 44 Copyright 2005

Dispersion)

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Slide 45 Copyright 2005

2

2

2

2

2

sincos

)(

1

eoe nnn

+=

x

y

z

o-

ray

e-ray

o-ray e-ray

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Slide 46 Copyright 2005

(Director)

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Slide 47 Copyright 2005

(Anisotropic)

(Inhomogeneous)

Maxwell Equation

(Layered Structure)

2x2 Jones Matrix

2x2 Extend Jones Matrix 4x4 Matrix

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Slide 48 Copyright 2005

Normally White TN

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Slide 49 Copyright 2005

TN

32 =nd

095.0,550 == nnm

md 5=

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Slide 50 Copyright 2005

)(),( rnrn oe)(rnV )(rE

T)(VTT =

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Slide 51 Copyright 2005

LCD TV

ODF

IBA

Spinless Coating

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Slide 52 Copyright 2005

LCD TV

PC TV

Source LCD International 2002

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Slide 53 Copyright 2005

Modes

TN (Twisted-Nematic)

- All TFT-LCD Companies

IPS (In-Plane-Switching)

- Hitachi, NEC, LG-P, HannStar VA (Vertical-Alignment)

Bump Type Fujitzu, ChiMei, AUO

Pattened Type Samsung, Sanyo

Continuous Pinwheel Alignment Type Sharp

FFS (Fringe-Field-Switching)

- BOE-HYDIS

OCB (Optical-Compensated-Bending)

- TMD

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Slide 54 Copyright 2005

176

120

170

IPS Mode

o

o

o

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Slide 56 Copyright 2005

Color-

Shift

Contrast

VAWV-TNAS-IPS

GoodGoodGoodResponse Time

GoodFairExcellent

GoodFairExcellentView

Angle

Excellen

t

ExcellentGoodContrast (Direct-

View)

GoodExcellentGoodTransmittance

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MPRT Response time

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Cell Process

Traditional Process

Cleaner PI CoaterPI Pre-Curing PI- Main-Curing Rubbing

Cleaner PI CoaterPI Pre-Curing PI- Main-Curing RubbingCF Substrate

TFT Array Substrate

Spacer SprayingCleaning

Ag Dispensing Seal DispensingCleaningAssembling

Cutting LC-Injection End-Sealing Cleaning PolarizerAttachment

PI-LINE

Assembly-LINE

Backend

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Slide 61 Copyright 2005

Cell Process

Special Process PI Coater

Rubbing M/C

Spacer Sprayer

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Slide 62 Copyright 2005

Gen.5 Cell ODF Process

Cleaner PI CoaterPI Pre-Curing PI- Main-Curing Rubbing

Cleaner PI CoaterPI Pre-Curing PI- Main-Curing RubbingCF Substrate

TFT Array Substrate

LC-Drop-Filling Cleaning

Ag Dispensing Seal DispensingCleaningAssembling

Cutting Polarizer Attachment

PI-LINE

ODF-LINE

Backend

Cell ODF Process

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Slide 63 Copyright 2005

IBA

Ion Beam Alignment

Rubbing Alignment Ion-Beam Alignment

Clean and Shorten

Line

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SID2005 LCD

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Hitachi IPS Pro

Source SID2005

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Slide 66 Copyright 2005

Hitachi RCCS

RGB Color Control System for LED

Backlight

Source SID2005

PDPPDP

LCDLCD

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Slide 67 Copyright 2005

Hitachi RCCS

Source SID2005

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Hitachi RCCS

Source SID2005

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Hitachi RCCS

Source SID2005

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Sharp Novel Impulse Driving

Source SID2005

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Sharp Novel Impulse Driving

Source SID2005

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Sharp Novel Impulse Driving

Source SID2005

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Samsung and NS ABSI Module

Source SID2005

Advance Bus System Interface

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Slide 74 Copyright 2005

Samsung and NS ABSI Module

Source SID2005

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Slide 75 Copyright 2005

Samsung LED Backlight

Samsung LED Backlight with

Optical Sensor

Source SID2005

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Slide 76 Copyright 2005

NEC-Mitsubishi Six Color LCD

Six Primary Color

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Slide 77 Copyright 2005

BOE IBA on PI

Ion Beam Alignment on Polyimide

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Thanks!