ZETTLER DISPLASYSSPECIFICATIONS FOR
LIQUID CRYSTAL DISPLAYCUSTOMER APPROVAL※ PART NO. : AQM0802A-FLW-GBW(ZETTLER DISPLAYS) VER1.1
APPROVALCOMPANYCHOPCUSTOMERCOMMENTSZETTLER DISPLAYS ENGINEERING APPROVALDESIGN BYCHECKED BYAPPROVED BY

Jacky LiLIU HANG

GU ZH

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
REVISION RECORDREVISIONREVISION DATE

VER1.02015-04-03

VER1.1

2015-05-19

PAGE

CONTENTSFIRST ISSUEP4ADD BL INFORMATIONZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1※ CONTENTS
1.0 GENERAL PECS
2.0 ABSOLUTE MAXIMUM RATINGS
3.0 ELECTRICAL CHARACTERISTICS
4.0 OPTICAL CHARACTERISTICS
5.0 BLOCK DIAGRAM
6.0 PIN ASSIGNMENT
7.0 POWER SUPPLY
8.0 TIMING CHARACTERISTICS
9.0 MECHANICAL DIAGRAM
10.0 RELIABILITY TEST
11.0 DISPLAY INSTRUCTION TABLE
12.0 STANDARD CHARACTER PATTERNS
13.0 APPEARANCE CRITERIA
14.0 PRECAUTION FOR USING LCMZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
1.0 GENERAL SPECS
1. Display Format

8*2 Character

2. Power Supply

3.3V

3. Overall Module Size

30.0mm(W) x 19.5mm(H) x max 5.5mm(D)4. Viewing Aera(W*H)

27.0mm(W) x 10.5mm(H)5. Dot Size (W*H)

0.45mm(W) x 0.50mm(H)6. Dot Pitch (W*H)

0.50mm(W) x 0.55mm(H)7. Character Size (W*H)

2.45mm(W) x 4.35mm(H)8. Character Pitch (W*H)

2.95mm(W) x 4.90mm(H)9. Viewing Direction

6:00 O’Clock10. Driving Method

1/16Duty,1/5Bias

11. Controller IC

ST7032I OR EQUIV

12. Display mode

STN（GRAY） /Positive/ Transflective

13. Backlight Options

LED-SIDE(White)

14. Operating temperature-20ºC ~ 70ºC

15. Storage temperature-30ºC ~ 80ºC

16. RoHS

RoHS Compliant

2.0 ABSOLUTE MAXIMUM RATINGS
Item

Symbol

Min

Typ

Max

Unit

Operating temperature

Top

-20

-

70

ºC

Storage temperature

Tst

-30

-

80

ºC

Input voltage

Vin

Vss

--

Vdd

V

Supply voltage for logic

Vdd- Vss

2.7

-

5.5

V

Supply voltage for LCD drive

Vdd- Vo

3.0

-

7.0

V

3.0 ELECTRICAL CHARACTERISTICS
3.1 Electrical Characteristics Of LCM
Item

SymbolCondition

Min

Typ

Max

Unit

Power Supply Voltage

Vdd

25ºC

--

3.3

--

V

Power Supply Current

Idd

Vdd=5.0V,
fosc=270kHz

--

--

--

mA

Input voltage (high)Vih

H level

0.8Vdd--Vdd

V

Input voltage (low)Vil

L level0--0.2Vdd

V

-20ºC

--

--

--

25ºC

4.3

4.5

4.7

70ºC

--

--

--

Recommended
Voltage

LC

Driving

Vdd -VoZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

V3

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
3.2 The Characteristics Of LED Backlight
3.2.1 Electrical-Optical Characteristics Of LED Backlight (Ta=25ºC)
Item

SymbolCondition

Min

Typ

Max

Unit

Forward Voltage

Vf

If=60mA

3.1

3.3

3.5

V

Reverse Voltage

--

4

V

--

cd/㎡

(1)

Vr

-

--

(2)

Luminance

Lv

If=60mA

100(3)

Uniformity

Δ(Lvmin/Lvmax)%

70%

--

--

-

Peak wave length

λp

--

--

--

--

nm

x

If=60mA

0.26

--

0.30

um

y

If=60mA

0.27

--

0.31

um

-

If=60mA

-

20000

-

Hours

Chroma coordinate
Lifetime

(4)

NOTE:
(1) Forward voltage means voltage applied directly to the LED(2)The luminance is the average value of 5 points,The measurement instrument is BM-7 luminance colorimeter.The
diameter of aperture is Φ5mm(3) Luminance means the backlight brightness without LCD.
(4) Backlight lifetime means luminance value larger than half of the original after 20000 hours’ continuous working.

3.2.2 Backlight Control Circuit For LCM（1x4=4 pcs LED）

A:3.3±0.2V
4.7 Ω

4.7 Ω

K
3.2.3 LED Typical Electro-Optical Characteristics Curve（for single led）
1. Forward current vs. Ambient temperature

2.Forward current VS Forward Voltage

1.Forward current VS.Ambient Temperature30

Forward Current (mA）

25
)
A
m
(
t
n
e
r
r
u
C
d
r
a
w
r
o
F

20
15
10
5
0
-30

2. Forward current vs. Forward voltage

25
20
15
10
5
0

0
25
50 80
Ambient Temperature

100

4
2
3
Forward Voltage

5

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
4.0 OPTICAL CHARACTERISTICS (Ta=25ºC, Vdd= 3.3V±0.25V)
Item

SymbolCondition

Min

Typ

Max

Unit

Viewing angle (horizontal)θCr ≥ 2.0

-35

-

35

deg

Viewing angle (vertical)φCr ≥ 2.0

-25

-

40

deg

Contrast RatioCr

φ=0°, θ=0°

-

3

-

Response time (rise)Tr

φ=0°, θ=0°

-

180

300

ms

Response time (fall)Tf

φ=0°, θ=0°

-

150

250

ms

(1). Definition of Optical Response Time(2). Definition of Contrast Ratio(3). Definition of Viewing Angle θ and Ф
NORMAL θ=0°
φ=180°
12:00

Y

VIEW
POSITIONθ

φ=270°
9:00

φ=90°
3:00

X

φ=0°
6:00

φ

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

5

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
5.0 BLOCK DIAGRAM

SEG1-40

SEG1----------SEG40

ST7032i

COM1

COM16

--------

1.V0
2.VOUT
3.CAP1N
4.CAP1P
5.VDD
6.VSS
7.SDA
8.SCL
9.XRSETBLCD 8X2

COM16

6.0 PIN ASSIGNMENT
Pin No.

SymbolFunction

1VO

Test PIN for VLCD,leave it open

2

VOUT

DC/DC voltage converter output

3

CAPIN

For voltage booster circuit(VDD-VSS)

4

CAPIP

External capacitor about 0.1u~4.7uf

5

VDD

+3.3V

6

VSS

Ground7

SDA

Serial data input

8

SCL

Serial clock input

9

XRSETB

Chip reset signal. Active when low

7.0 POWER SUPPLY
VDD

1.0uf

VOUT

LCM

CAP1N

1.0uf

VDD

CAP1P
VSS

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
8.0 TIMING CHARACTERISTICSZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

7

PARAMETERS

5

UNIT

ECN NO.

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

A

B

C

6:00 O'CLOCK

VIEW DIRECTION

2

ST7032I

1

1/16DUTY,1/5BIASLCD DRIVE METHODLCD DRIVE ICDISPLAY MODE

3

--

4

YES

OTHER

WHITE,IF=60mA VF=3.3±0.2VV

ROHS STANDARD

BACK:TRANSFLECTIVEFRONT:TRANSMISSIVE-30°C TO 80°C

-20°C TO 70°C

BACKLIGHT

POLARIZER TYPE

STORAGE TEMP

4.5V

OPERATING CURRENT --LCD DRIVE VOLTAGE

OPERATING TEMPOPERATING VOLTAGE 3.3V

LIU HANG

Jacky Li

1:1

5

APPROVED: GU ZHCHECKED:DRAWN:SCALE:

3RD ANGLEMM

6TOLERANCE
X.X = ±0.3
X.XX = ±0.20
ANG = -

3

2

1

REV

6
CN/DATE
2015-03-06

First issued

8

NATURE OF MODIFICATION

7

F

CAP1P
CAP1N
VOUT
VO
SYMBOL

54
3
2
1
PIN NO.

8SH NO 1/2

7

-PART NO:A

REV

AQM0802A-FLW-GBWLCM

XIAMEN ZETTLER ELECTRONICS CO., LTD.

MODEL NO:

TITLE:ZETTLER DISPLAYS

VSS
VDD

6

SCL
SDA
7

XRSETB
8

9

A

B

C

D

ITEM

4

D

PARAMETERS

3

E

ITEM

2

E

F

1

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1

9.0 MECHANICAL DIAGRAM

8

1

2

SEG1
ST7032I (0,0)

1

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.
CAP1N
VOUT
VO
3

4

COMI2

COM16

COM9

SEG76

7

8

5

6

7

8

-APPROVED: GU ZHSH NO 2/2

AQM0802A-FLW-GBW
MODEL NO:PART NO:

Jacky LiLIU HANGDRAWN:CHECKED:

A

REV

LCM
TITLE:

1:1
SCALE:XIAMEN ZETTLER ELECTRONICS CO., LTD.

TOLERANCE
X.X = ±0.3
X.XX = ±0.20
ANG = -

SCL
SDA
VSS

ZETTLER DISPLAYSXRESETBMM
3RD ANGLE

UNIT

151
152

9

COM8

COM1

SEG40

XRESET
OSC1
OSC2
RS
CSB
RW
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
VSS
VSS
VSS
OPF1
OPF2
OPR1
OPR2
SHLC
SHLS
VDD
VDD
VDD
VIN
VIN
TEST1
TEST2
VSS
NC
VOUT
VOUT
PSB
VSS
PSI2B
CAP1P
CAP1P
EXT
VSS
CLS
CAP1N
CAP1N
VOUT
VOUT
V0
V0
V1
V2
V3
V4
NC

A

COM8

55

64
63
62

SEG1

104
103

COM1

68

SEG5

SEG1

8*2LINE CHARACTERS

138

B

COM16

COM9

6

SEG75

C

D

E

5

LCD PANLE

4

SE40

F

3

Y

2

X

1

A

B

C

D

E

F

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1

VDD

CAP1P

69

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
10.0 RELIABILITY TESTNO

Test Item

1

High temperaturestorage2

Low temperaturestorage

3

High temperature
Operation

4

Environmenta
l
Test

5

6

Low temperature
OperationHightemperature/High
Humidity Storage

Temperature Cycle

Description
Applying the high storage
temperature Under normal humidity for along time Check normal performance
Applying the low storage temperature
Under normal humidity for a long time
Check normal performance
Apply the electric stress(Volatge andcurrent) Under high temperature for along time
Apply the electric stress Under low
temperature for a long time
Apply high temperature and highhumidity storage for a long time
Apply the low and high temperature
cycle-30ºC＜＞25ºC＜＞80ºC ＜＞25ºC
30min
10min 30min 10min

Test Condition

Remark

80 ºC
96hrs
-30ºC
96hrs
70 ºC
96hrs
-20ºC
96hrs
90% RH
40ºC
96hrs

Note1
Note1
Note2
Note2

-30ºC/80ºC
10 cycle

1 cycleCheck normal performance

Vibration test(Package
state)

7

Applying vibration to product checknormal performance

Mechanical
Test
Shock test(package
state)

8
9

Applying shock to product check normal
performance

Freq:10-55Hz
Max
Acceleration 5G
1cycle time:1min
time
X.Y.Z direction
for 15 mines
Drop themthrough 70cm
height to strikehorizontal plane

Other

Remark
Note1:Normal operations condition (25ºC±5ºC).
Note2:Pay attention to keep dewdrops from the module during this test.

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
11.0 DISPLAY INSTRUCTION TaBleZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
12.0 STANDARD CHARACTER PATTERNSZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
13.0 APPEARANCE CRITERIA
Item

Description

Dot defects

Scratches
black dot
white dot on
the polarizer
dirty spot
and bubble
between thepolarizer andglass in thedisplay area.

（black/wh
ite dot）

black/whiteline defect(straight
line orcurve etc.
Line typedefects)
Chip oncornerFibres inactive area,
scratchesand blackline on theglass orpolarizer.

PictureMA≤0.1

Ignored0.1＜φ≤0.20

2J＞50.20＜φ≤0.25

1

J＞10

MI

J:the distance
between dot and dot.

J:the distance
between dot and dot.

sidestep on
the lower
glass

Crack

Y:width of crack
X:length of crack
L:width of sidestep
T:deepth of crack
Z:thickness of single
glass

0.25＜φ≤0.30

0

0φ>0.30W≤0.01

IgnoredW≤0.02 L≤52

J＞5W≤0.03 L≤4

1

J＞10

W≤0.04 L≤3

0

J＞10

W≤0.05 L≤2

0Y≤1/2L, X≤1

IgnoredY≤1/2L, X≤2

2

Y≤1/2L, X≤3

1

Y≤1/2L, X≤1/3J0J≤3

Y≤1/2L, X≤2/3J

0J≤3

Y≤1/5L X≤5
≤1/2T

Z

IgnoredY≤1/4L X≤5
≤1/2T

Z

2

Y≤1/3L X≤5 Z≤
1/2T

1Y≤1/3L X≤10 Z
≤1/2T

0

Y≤1/3L X≤15 Z
≤1/2T

0

Cracks in any
area

Inspection
MethodVisual/contrast
byInspection
standard
film●

Y:width of chip
X:length of chip
L:width of sidestep
J:distance between
electrode and thefarthermost edge.

Crack

Specification

Visual/contrast
byInspection
standard
film

●

●

Visual/contrast
byInspection
standard
film

Visual/contrast
byInspection
standard
film●

rejected

Visual●Polarizer≤0.8

Accepted

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

●

Visual/13

AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
be applicable forup/bottom polarizer

0.8＜L≤1.0

Rejected

1.0＜L≤1.5

Rejected

1.5＜L≤2.0

Rejected

contrast
byInspection
standard
film

Any seeable polarizer slanting or
excursion in active area will be rejected.
The polarizer edge should be even andbe line. Any indention within 1/3 ofsilkscreen line will be rejected.
Wrong direction, missing or extra,
incorrect sticking for polarizer and dirty
surface(grease) on polarizer will berejected.
seeable black silkscreen line from thearond can be accepted.
Refer to the drawing size requirement.

End seal

L:The distance fromthe block to edge ofglass.

Silkscreenline

UV glue of sealon the glass
surface

Rejected

The UV glue ofseal overflow
into the activearea.

Rejected

Direction ofend seal isdifferent fromthe drawing.

Rejected

Glue capacityof end seal ＜(1/3)*L

Rejected

the height andlength of end
seal is out ofthe drawing
requirements.

Rejectedsilkscreen line
overflow into
the active area.

Rejectedsilkscreen line
deviated in
active area.

Rejected

bubble ofsilkscreen line
≥ 1/3 witdth ofsilkscreen line

Rejected

Visual/contrast
byInspection
standard
film

●

●

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

Visual/contrast
byInspection
standard
film

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
PIN

Protective
film

Rainbowbackgroud
color

Glue on PIN：there is glue on the PIN
without pin clip will be rejected. PIN glue
solidification：PIN glue doesn't solidify
completely. The sunken or glue stain bytouching will be rejected.
PIN deflection：if deflection angle ＞±
5°，rejected；contrarily, please referto the drawing requirement. Without
continuous glue on pins will be rejected.
PIN glue stains on polarizer or inleakagepolarizer and glass, rejected.
PIN glue exceeds the up polarizer,
rejected.
Missing or extra, broken pin, rejected.
PIN loosen：no permission for pin looseor drop.
Clip
PIN:pin center exceeds 1/3 ITO width，
rejected.
No pinglue, rejected.
UV glue
range: UV glue must be exceeded over1~1.5 pin distance from both side. if not,rejected.
PIN length and direction
must be same with the drawing
requirements.
LCD protective film can not stick on thepolarizer and the product protective film
raised ≤1/3 length or width of polarizer
from same direction of axis and its total
length should be ≤15mm . This defectcan be accepted.
rainbow is not in
active area.

Accepted

Rainbow inactive area.

Rejected

with obvious
discoloration
and unevencolor.

Rejected

There areobvious different
backgroundcolor from thesame productlot.

Rejected

Visual/contrast
byInspection
standard
film●

Visual●Visual/co
ntrast by
goldensample●●Visual/co
ntrast by
goldensampleNOTE:
Inspection condition:
Viewing distance for cosmetic inspection is 30cm with bare eyes, and under an environment of 800 lux(20W*2--40W) light intensity, all directions for inspecting the sample should be within 45° against perpendicular line.

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
14.0

PRECAUTION FOR USING LCM

1. When design the product with this LCD Module, make sure the viewing angle matches to its purpose of usage.
2. As LCD panel is made of glass substrate, Dropping the LCD module or banging it against hard objects may cause
cracking or fragmentation. Especially at corners and edges.
3. Although the polarizer of this LCD Module has the anti-glare coating, always be careful not to scratch its surface. Useof a plastic cover is recommended to protect the surface of polarizer.
4. If the LCD module is stored at below specified temperature, the LC material may freeze and be deteriorated. If it isstored at above specified temperature, the molecular orientation of the LC material may change to Liquid state and it
may not revert to its original state. Excessive temperature and humidity could cause polarizer peel off or bubble.
Therefore, the LCD module should always be stored within specified temperature range.
5. Saliva or water droplets must be wiped off immediately as those may leave stains or cause color changes if remained
for a long time. Water vapor will cause corrosion of ITO electrodes.
6. If the surface of LCD panel needs to be cleaned, wipe it swiftly with cotton or other soft cloth. If it is not still clean
enough, blow a breath on the surface and wipe again.
7. The module should be driven according to the specified ratings to avoid malfunction and permanent damage.
Applying DC voltage cause a rapid deterioration of LC material. Make sure to apply alternating waveform bycontinuous application of the M signal. Especially the power ON/OFF sequence should be kept to avoid latch-up ofdriver LSIs and DC charge up to LCD panel.
8. Mechanical Considerationsa) LCM are assembled and adjusted with a high degree of precision. Avoid excessive shocks and do not make any
alterations or modifications. The following should be noted.
b) Do not tamper in any way with the tabs on the metal frame.
c) Do not modify the PCB by drilling extra holes, changing its outline, moving its components or modifying its
pattern.
d) Do not touch the elastomer connector; especially insert a backlight panel (for example, EL).
e) When mounting a LCM makes sure that the PCB is not under any stress such as bending or twisting. Elastomer
contacts are very delicate and missing pixels could result from slight dislocation of any of the elements.
f) Avoid pressing on the metal bezel, otherwise the elastomer connector could be deformed and lose contact,
resulting in missing pixels.
9. Static Electricitya) Operator
Ware the electrostatics shielded clothes because human body may be statically charged if not ware shielded clothes. Never
touch any of the conductive parts such as the LSI pads; the copper leads on the PCB and the interface terminals with any
parts of the human body.
b) Equipment
There is a possibility that the static electricity is charged to the equipment, which has a function of peeling or friction
action (ex: conveyer, soldering iron, working table). Earth the equipment through proper resistance (electrostatic earth:
1x108 ohm).
Only properly grounded soldering irons should be used.
If an electric screwdriver is used, it should be well grounded and shielded from commutator sparks.
The normal static prevention measures should be observed for work clothes and working benches; for the latter
conductive (rubber) mat is recommended.
c) Floor
Floor is the important part to drain static electricity, which is generated by operators or equipment.
There is a possibility that charged static electricity is not properly drained in case of insulating floor. Set the electrostatic
earth (electrostatic earth: 1x108 ohm).
d) Humidity
Proper humidity helps in reducing the chance of generating electrostatic charges. Humidity should be kept over 50%RH.
e) Transportation/storage
The storage materials also need to be anti-static treated because there is a possibility that the human body or storage
materials such as containers may be statically charged by friction or peeling.
The modules should be kept in antistatic bags or other containers resistant to static for storage.
f) Soldering
Solder only to the I/O terminals. Use only soldering irons with proper grounding and no leakage.
Soldering temperature : 340~370°C
Soldering time: 3 to 4 sec.
Use eutectic solder with resin flux fill.

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

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AQM0802A-FLW-GBW(ZETTLER DISPLAYS) CHARACTER MODULE VER1.1
If flux is used, the LCD surface should be covered to avoid flux spatters. Flux residue should be removed afterwards.
g) Others
The laminator (protective film) is attached on the surface of LCD panel to prevent it from scratches or stains. It should bepeeled off slowly using static eliminator.
Static eliminator should also be installed to the workbench to prevent LCD module from static charge.
10. Operationa) Driving voltage should be kept within specified range; excess voltage shortens display life.
b) Response time increases with decrease in temperature.
c) Display may turn black or dark blue at temperatures above its operational range; this is (however not pressing
on the viewing area) may cause the segments to appear “fractured”.
d) Mechanical disturbance during operation (such as pressing on the viewing area) may cause the segments toappear “fractured”.
11. If any fluid leaks out of a damaged glass cell, wash off any human part that comes into contact with soap and water.
The toxicity is extremely low but caution should be exercised at all the time.
12. Disassembling the LCD module can cause permanent damage and it should be strictly avoided.
13. LCD retains the display pattern when it is applied for long time (Image retention). To prevent image retention, do not
apply the fixed pattern for a long time. Image retention is not a deterioration of LCD. It will be removed after display
pattern is changed.
14. Do not use any materials, which emit gas from epoxy resin (hardener for amine) and silicone adhesive agent(dealcohol or deoxym) to prevent discoloration of polarizer due to gas.
15. Avoid the exposure of the module to the direct sunlight or strong ultraviolet light for a long time.

ZETTLER DISPLAYS XIAMEN ZETTLER ELECTRONICS CO., LTD.

17