ZETTLER DISPLAYSSPECIFICATIONS FOR
LIQUID CRYSTAL DISPLAYCUSTOMER APPROVAL※ PART NO. : ATM0280B44D(ZETTLER DISPLAYS) SPEC VER1.1
COMPANYCHOPAPPROVALCUSTOMERCOMMENTSZETTLER DISPLAYS ENGINEERING APPROVALDESIGNED BYCHECKED BYAPPROVED BY

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
REVISION RECORDREVISIONREVISION DATE

VER1.02019-03-19

VER1.1

2019-04-19

ZETTLER DISPLAYS

PAGE-6,8,10,16,17,18

CONTENTSFIRST ISSUE
CHANGE THE BACKLIGHT CURRENT ,ADD
THE DETAILS OF INSPECTION SPECIFICATION

1ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1※ CONTENTS
1.

GENERAL SPECIFICATIONS

2.

PIN ASSIGNMENT

3.

OPERATING SPECIFICATIONS

4.

OPTICAL SPECIFICATIONS

5.

RELIABILITY TEST

6.

PRECAUTION FOR USING LCM

7.

MECHANICAL DRAWING8.

PACKAGE DRAWING9.

INSPECTION SPECIFICATIONZETTLER DISPLAYS

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
1. GENERAL SPECIFICATIONS
ItemSpecification

1. LCD size

2.8 inch(Diagonal)

2. Driver element

a-Si TFT active matrix

3. Resolution

240x(RGB)x320

4. Display mode

Normally white,Transmissive

5. Dot Pitch (W*H)

0.18mm(W) x 0.18mm(H)6.

Active Area(W*H)

43.2mm(W) x 57.6mm(H)7.

Module size (W*H)

50.0mm(W) x 69.2mm(H) x 2.7mm(D)RemarkNote 1(LCD glass thickness:0.4mm)
8.

Surface treatment

Anit-Glare9.

Color arrangement

RGB-stripe

10. Driver IC

ILI9341

11. Interface

SPI

12. Panel power consumption

TBD

13. Weight

TBD

14. RoHS

RoHS compliant

Note 1: Please refer to mechanical drawing.

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3ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
2. PIN ASSIGNMENT
Pin No.

SymbolFunction

123456GND
LED+LEDGND
VDD
RESET

7SDA

8SCL

9CS

1011RS
GND

12SDO

13TE

14151617181920IM3GND
NCNC
NC
NC
GND

GroundAnode of LED backlight
Cathode of LED backlight
GroundPower supply (TYP:2.8V)
System reset pin
Serial data input pin and output pin (SDA)in serial bussystem interface I. Serial data input pin and outputpin(SDI)in serial bus system interface II. The data is inputtedon the rising edge of the SCL signal. If not used, please let it
open or connected to VSSD.
(NWR) Write enable pin I80 parallel bus system interface.
(SCL) server as serial data clock in serial bus systeminterface when IFSEL=0.
Fix it to IOVCC or VSSD level when not used.
Chip select signal.
Low: chip can be accessed;
High: chip cannot be accessed. Must be connected to VSSD
if not in use.
Command / parameter or display data selection pin
GroundSerial data output pin (SDO) in serial bus system interface
II. If not used, please open this pin.
Tearing effect output.
If not used, please open this pin.
serial interface I / serial interface II
GroundNo connection
No connection
No connection
No connection
GroundLevel

NotePPPPP
I

I/O

I/O

IIPO
OIP----P

I: input, O: output, P: PowerZETTLER DISPLAYS

4ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
3. Operating Specification
3.1 ABSOLUTE MAXIMUM RATINGS

Item

SymbolValues

Unit

RemarkMin.

Max.

VDD/IOVCC

-0.3

4.6

V

Operation TemperatureTOP-2070ºC

Storage Temperature

TST-3080ºC

LED Reverse Voltage

VR-1.2VEach LED
Note 2

LED Forward Current

IF25mA

Each LED

Power Voltage

Note 1: The absolute maximum rating values of this product are not allowed to be exceededat any times. Should a module be used with any of the absolute maximum ratings
exceeded, the characteristics of the module may not be recovered, or in an extreme
case, the module may be permanently destroyed.
Note 2: VR Conditions: Zener Diode 20mA
3.2 Typical Operation Conditions
Item

SymbolValues
Min.

Typ.

Max.

Unit

Operating voltage

VDD

2.5

2.8

3.3

V

Input Logic High Voltage

VIH

0.7IOVCC--IOVCC

V

Input Logic Low Voltage

VILVss--0.3IOVCCVZETTLER DISPLAYS

Remark5ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
3.3 Backlight driving conditions
Item

SymbolVoltage for LED Backlight

Values

Unit

Remark

3.4

VNote 1

70-mA----Hr

Min.

Typ.

Max.

VL

3.0

3.1

Current for LED BacklightIL--

LED life time

--

30000

Note 2

Note 1: The LED Supply Voltage is defined by the number of LED at Ta=25℃ and IL =70mA.
Note 2: The “LED life time” is defined as the module brightness decrease to 50% original brightness at
Ta=25℃ and IL =70mA.

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3.4 Timing Characteristics
Please refer to IC specification for detailed information.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
4.0 OPTICAL SPECIFICATIONS
Item

Viewing Angle(CR≥10)

SymbolCondition

θLΦ=180o(9 O'CLOCK)

θR

Values
Min.

Typ.

Max.

--45--o--45--oΦ=0 (3 O'CLOCK)

θT

Φ=90 (12 O'CLOCK)--50--

θB

Φ=270o(6 O'CLOCK)--20--

Unit

Remarkdegree

Note 1

Response Time

TON + TOFF

--

16--

msec

Note 3Contrast Ratio

CR--480----

Note 4--0.307----

Note 2--

0.329

--

--

WX
Color Chromaticity

NormalΘ=Φ=0oWY

Luminance

L500

--

--

cd/m

Luminance UniformityYU7580--%

Note 5Note 62

Note 6Note 7

Test Conditions:
1. VDD=2.8V, IL=70mA (Backlight current), the ambient temperature is 25℃.
2. The test systems refer to Note 2.

Note 1: Definition of viewing angle range

Figure 4.1 Definition of viewing angle.

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8ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
Note 2: Definition of optical measurement system.
The optical characteristics should be measured in dark room. After 30 minutes operation, the optical properties aremeasured at the center point of the LCD screen. (Response time is measured by Photo detector TOPCON

Figure 4.2 Optical measurement system setup

Note 3: Definition of Response time
The response time is defined as the LCD optical switching time interval between “White” state and “Black” state. Risetime (TON) is the time between photo detector output intensity changed from 90% to 10%. And fall time (TOFF) is thetime between photo detector output intensity changed from 10% to 90%.

Figure 4.3 Definition of response.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
Note 4: Definition of contrast ratio

Note 5: Definition of color chromaticity (CIE1931)
Color coordinates measured at center point of LCD.
Note 6: All input terminals LCD panel must be ground while measuring the center area of the panel. The LED driving
condition is IL=70mA .

Note 7: Definition of Luminance Uniformity

Active area is divided into 9 measuring areas (Refer to Fig. 4-4 ).Every measuring point is placed at the center of eachmeasuring area.

Figure 4.3 Definition of measuring points.

Bmax: The measured maximum luminance of all measurement position.
Bmin: The measured minimum luminance of all measurement position.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
5. RELIABILITY TESTNO..
123456

Test Item

Description

High temperaturestorageEndurance test applying thehigh storage temperature for along time
Low temperature Endurance test applying thestorage
low storage temperature for along timeHigh temperature Endurance test applying theoperationelectric stress under hightemperature for a long time
Low temperature Endurance test applying theoperation
electric stress under low
temperature for a long timeHigh temperature Endurance test applying the/humidity storage high temperature and highhumidity storage for a longtime
High temperature Endurance test applying/humidity operation electric stress under hightemperature and high humidity
for a long time7Temperature Cycle

8Vibration test

9Fall test

10

Static electricity
test

Endurance test applying thelow and high temperature cycle-20℃ → 25℃ → 70℃ →25℃
30min 5min 30min 5min onecycle
Endurance test applying thevibration during transportation
and usingEndurance test dropping theLCM from a high place
Endurance test applying staticelectric stress to terminal

Test Condition

Remark80℃,240 H

Note 1
Note 4-30℃,240H

Note 1
Note 470℃,96H

Note 2
Note 4-20℃,96H

Note 1
Note 450℃，90% R.H
240H

Note 440℃ 90% R.H 96H

Note 4-20℃/70℃ 10 cycles

10Hz~50Hz
Swing:0.75mm
time:30min
600mm heightContact discharge:±2KV~4KV Air
discharge:±2KV~10KV

Note 1: Ta is the ambient temperature of samples.
Note 2: Ts is the temperature of panel’s surface.
Note 3: In the standard condition, there shall be no practical problem that may affect thedisplay function. After the reliability test, the product only guarantees operation,
but don’t guarantee all of the cosmetic specification.
Note 4: Before cosmetic and function test, the product must have enough recovery time, at least 2 hoursat room temperature.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
6. 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.
Use of 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 makeany 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 itspattern.
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 theelements.
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
Wear 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 : 280°C ± 10°C
Soldering time: 3 to 4 sec.
Use eutectic solder with resin flux fill.
If flux is used, the LCD surface should be covered to avoid flux spatters. Flux residue should be removed afterwards.
g) Others

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12ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
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 pressingon 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.
The brightness of LCD module may be affected by the routing of CCFL cables due to leakage to the chassis throughcoupling effect. The inverter circuit needs to be designed taking the level of leakage current into consideration. Thoroughevaluation is needed for LCD module and inverter built into its host equipment to ensure specified brightness.

ZETTLER DISPLAYS

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(3.00)(2.00)(1.40)ZETTLER DISPLAYS

57.60(A.A)
60.00(UP POL.)64.95±0.1
69.20±0.15
5.0±0.5(31.80)

NOTE:
1.Unspecified tolerance：±0.3mm
2."()"is reference dimension

Stiffener

0.3±0.05

Contact sideR0

DST T=0.1mm
W=2mm

0.5±0.1

1Kapton tape

W:0.35±0.05
P0.5*19=9.5±0.120Component area.275

475

10.50±0.1

14-49.05±0.1

68.25

19.75±0.5

20

2.70
0.80

3.00±0.1
0.48±0.15

K1 K3
A K2 K4

Remove Tape

Front

0.
4 -R

240(RGB)X320 DOTS

50.00±0.15
46.40±0.1
45.00(UP POL.)
43.20(A.A)(25.00)Rear(1.80)(2.50)(3.40)

ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1

7. MECHANICAL DRAWING

3.5±0.3

25.45±0.514ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
8. PACKAGE DRAWING
T.B.D.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
9. INSPECTION SPECIFICATIONSCOPE SPECIFICATIONS CONTAIN
1.1 DISPLAY QUALITY EVALUATION
1.2 MECHANICS SPECIFICATIONSAMPLING PLAN
UNLESS THERE IS OTHER AGREEMENT, THE SAMPLING PLAN FOR INCOMING INSPECTION SHALL FOLLOWMIL-STD-105E.
2.1 LOT SIZE: QUANTITY PER SHIPMENT AS ONE LOT (DIFFERENT MODEL AS DIFFERENT LOT ).
2.2 SAMPLING TYPE: NORMAL INSPECTION, SINGLE SAMPLING.
2.3 SAMPLING LEVEL: LEVEL II.
2.4 AQL: ACCEPTABLE QUALITY LEVELMAJOR DEFECT: AQL=0.65
MINOR DEFECT: AQL=1.0
PANEL INSPECTION CONDITION
3.1 ENVIRONMENT:ROOM TEMPERATURE: 25±5°C.
HUMIDITY: 65±5% RH.
ILLUMINATION: 300 ~ 700 LUX.
3.2 INSPECTION DISTANCE:
35±5 CM
3.3 INSPECTION ANGLE:THE VISION OF INSPECTOR SHOULD BE PERPENDICULAR TO THE SURFACE OF THE MODULE.
3.4 INSPECTION TIME：PERCEPTIBILITY TEST TIME: 20 SECONDS MAX.
4. DISPLAY QUALITY
4.1 FUNCTION RELATED:THE FUNCTION DEFECTS OF LINE DEFECT, ABNORMAL DISPLAY, AND NO DISPLAY ARE CONSIDERED
MAJOR DEFECTS.
4.2 BRIGHT/DARK DOTS:

Note: 1:The definition of dot: The size of a defective dot over 1/2 of whole dot is regarded as one defective dot.
Bright dot: Dots appear bright and unchanged in size in which LCD panel is displaying under black pattern.
The bright dot defect must be visible through 2% ND filter
Dark dot: Dots appear dark and unchanged in size in which LCD panel is displaying under pure red, green, bluepattern.
4.3 Pixel Definition:

Note 1:
If pixel or partial sub-pixel defects exceed 50% of the affected pixel or sub-pixel area, it shall be considered as1
defect.
Note 2:
There should be no distinct non-uniformity visible through 2% ND Filter within 2 sec inspection times.

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1
4.4Visual Inspection specifications:ZETTLER DISPLAYS

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ATM0280B44D (ZETTLER DISPLAYS) TFT MODULE VER1.1

Note: Extraneous substance and scratch not affecting the display of image, for instance, extraneous substance underpolarizer film but outside the display area, or scratch on metal bezel and backlight module or polarizer film outside thedisplay area, shall not be considered as defective or non-conforming.

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