Toho Technology Flashcards
Scan Range
Programmable up to 200mm
Measurement Range
1 to 4,000MPa (For oxide filler on Si wafer)
Repeatability
1.3MPa
Accuracy
Less than 2.5% or 1MPa
Minimum Radius
2.0m
Maximum Radius
33km
Wafer Sizes (mm)
25mm, 50mm, 75mm, 100mm, 125mm, 150mm, 200mm
Minimum Scan Step
0.02mm
What wave length are the lasers?
670nm / 780 nm
What is the laser power rating?
4mW
Heating rates
up to 25˚c per minute
What does the cooling unit use?
LN2
What does WinFLX recalculate?
Automatic recalculation of stress when film or substrate thickness is corrected
What is dual wavelength technology?
Enables the system to select the wavelength most suitable for challenging films such as silicon nitride
Name 5 data analyst features of WinFLX
1) Biaxial modulus of elasticity
2) Linear expansion coefficient
3) File subtraction
4) Trend plotting
5) Calculation of water diffusion coefficient in dielectric film
Name at least 4 stress related problems
1) Aluminum stress-induced void
2) Passivation cracking (nitride oxide)
3) Stress-induced dislocations in Si
4) Tungsten Silicide cracking
5) Stress increase in oxides during temperature cycling
6) Matching metallization expansion on GaAs
7) Si cracking due to high film stress
What wafer sizes can be measured?
50mm (optional), 75 mm,
100mm, 125mm, 150mm, and
200mm
Maximum Points per scan?
1250
Weight of the system? (kg & lbs.)
45.5kg & 100lbs.
Scan range for the 4 systems
FLX-2320-S: 200mm
FLX-2320-R: 200mm
FLX-3300-T: 300mm
FLX-3300-R: 300mm
Which systems have automatic 3-D mapping?
FLX-2320-R and FLX-3300-R
Which systems have manual 3-D mapping?
FLX-2320-S and FLX-3300-T
What are the sample sizes of the systems?
FLX-2320-S: 75-200mmØ FLX-2320-R: 75-200mmØ
FLX-3300-T: 150mmØ, 200mmØ, 300mmØ
FLX-3300-R: 150mmØ, 200mmØ, 300mmØ
25mm is equal to how many inches?
1”
50mm is equal to how many inches?
2”
75mm is equal to how many inches
3”
100mm is equal to how many inches?
4”
125mm is equal to how many inches?
5”
150mm is equal to how many inches?
6”
200mm is equal to how many inches?
8”
7 applications of the FPM series
1) Color Filter Pixel Volume on ODF process
2) Main PS and Sub PS on Touch Screen
3) ITO CD Overlay for Mask alignment
4) 3-D/CD inspection for Half-tone Exposure
5) Photo-Resist film thickness
6) Surface form and thickness of RGB filters
7) Volume, Form, Height of pixel for Ink Jet print control
5) photo-resist
300mm is equal to how many inches?
12”
TACT Time
2.5-5 sec FAAM; average 17 sec Glass
Prep Uptime
> /= 95%
Throughput?
40k glass/month (4-heads)
Height Repro </= 20-30nm (3-
.
Lateral CD/OL Repro
</= .2 micron (3- @20x)
Head-to-Head Correlation
</= 20-30nm (3- )
Key technologies
1) High-speed SWLI
2) Surface profiling of transparent films
3) Custom 20x or 50x FPM objective
4) Large stage mecha-tronics
5) Micron Absolute positioning
6) High-speed motion with nanometer stability and micron absolute positioning
What is the difference between the FP-10 and FP-20?
1) The FP-10 Measures up to 400mm x 500mm substrates while the FP-20 measures substrates larger than 400mm x 500mm
2) FP-10: the head is stationary, but the stage moves
FP-20: The Head Moves, but the state is stationary
Scan repeatability
10A for A type / 15A for X type
X and Y repeatability
+/- 2um
Scan length
30mm ~ 90mm with stress option
Scan speed (FP Series)
1um / sec ~ 25um / sec
Sampling Rate (FP series)
50 / 100 / 200 / sec
Throat Height (FP series)
15 mm
Vertical Range (FP series)
0-130um
L - Stylis (FP series)
2um/60 degrees
Stylus Force (FP-series)
0.5 mg - 15 mg
Pattern Recognition
Manual/Auto optional
Noise isolator (FP series)
Equipped
What does the TohoSpec 3000 do?
Provide accurate film thickness measurements across a vast array of applications
What kind of applications can the Toho 3000 measure?
1) LED
2) Solar
3) FPD/ LCD
4) OLED
5) Photomask
6) Power Device
7) SOI
8) Magnetic head for HDD
What films can the TohoSpec 3000 measure?
All partially transparent films up to 100nm thick
How many layers can the TohoSpec 3000 measure?
Guaranteed 3 layer measurements and in some cases beyond 3 depending on parameters
What kind of sample information does the TohoSpec 3000 give?
Sequence of the film stack, film materials, and nominal thickness of each layer
What are the substrates of the TohoSpec 3000?
Most smooth or semi-smooth surfaces with some reflectance
What is the difference between the TohoSpec 3000 and the TohoSpec 3000T?
The TohoSpec 3000 is for most applications. 512 pixels/100A~30u
The TohoSpec 3000T is the upgrade model for standard and thick film applications. 1024 pixels/100A~75u