TFT LCD MODULE

1.47 inch 172RGB*320DOTS

MODULE NUMBER: LBS147TC-IF15

REVISION: A

Customer:
Approved by

Approved by

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Revised History

Part Number Revision Revision Content Revised on

LBS147TC-IF15 A New 2021-11-23

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Contents

Revision History
Contents
1. General Description
2. Mechanical Drawing
3. Pin Description
4. Electrical Characteristics
5. Optical Characteristics
6. Reliability
7. Package Specifications
8. Incoming Inspection standards
9. Precautions When Using These TFT Display Modules
10. Warranty
11. Notice

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1. General Description

1.1 Description
LBS147TC-IF15 is a 172RGBX320 dot-matrix TFT LCD module. This module is composed of a TFT LCD
Panel, driver ICs, FPC and a Backlight unit.

1.2 Features

NO. Item Contents Unit

1 LCD Size 1.47 inch

2 Display Mode Normally black -

3 Resolution 172(H)RGB x320(V) pixels

4 Pixel pitch 0.0337(H) x 0.1011(V) mm

5 Active area 17.3892(H) x 32.352(V) mm

6 Module size 19.39(H) x 36.28(V) x1.46 (D) mm

7 Pixel arrangement RGB Vertical stripe -

8 Interface 4 Line SPI -

9 Display Colors 262K colors

10 Drive IC ST7789V3 -
11 Luminance(cd/m2) 350 (TYP) Cd/m2

12 Viewing Direction All View Best image

13 Backlight 2 White LED Parallel -

14 Operating Temp. -20℃~ + 70℃ ℃

15 Storage Temp. -30℃~+ 80℃ ℃

16 Weight 2.7 g

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 Item Date Remark
A 20211113 Original Drawing
19.39±0.20(LCM)

19.19±0.20(LCD)

18.79±0.20(PLZ)

17.39 LCD(AA) 1 白色胶铁一体

1
白色胶铁一体

6 1

接口定义：

NO SYMBOL
1.47"

32.35
172*RGB*320
1 LEDA
2 GND
2. Mechanical Drawing

8 1

34.15±0.20(CF)
LCD (AA)
3 RESET

33.65±0.20(PLZ)

35.98±0.20(LCD)

36.28±0.20(LCM)
4 RS

19.00± 0.5
5 SDA

0.50 Max
A
R2
STV7789V3/ GC9307N
.30
银浆点 单面弯折区域
6 SCL
焊锡处高度0.45MAX 7 VDD
黄色绝缘胶纸（T=0.05mm） FPC弯折突出背光胶框

2-? 0.8±
请注意机壳避空 8 CS
0.05
7.44

21± 0.3
FPC弯折示意图
1 8

FPC展开出货
0.3±0.05

1.3
0.7
P0.5X(8-1)=3.5±0.05

7.0±0.2
2.6±0.2
3.5±0.3

4.5± 0.2
4.5±0.07

Customer Approval Drawing Number Rev.

Signature Limito technology Inc. 1.47'' TFT A
Unless Otherwise Specified Material
Unit mm Title LBS147TC-IF15
General Roughness Soda Lime / Polyimide
Tolerance Drawn E.E. Panel / E. P.M.
Dimension ±0.2 By Letter Scale Sheet Size

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Angle ±1 Date 20211113 1:1 1 of 1 A3
3. Pin Definition
FPC Connector is used for the module electronics interface.

NO. Symbol Description

1 LEDA LED Anode
2 GND Power Ground.
3 RESET This signal will reset the device ,Signal is active low.
4 RS Display data/command selection pin in 4-line serial interface.
5 SDA SPI interface input/output pin.
6 SCL This pin is used to be serial interface clock.
7 VDD Power Supply for Analog
8 CS Chip selection pin ,Low enable ,High disable.

Note:

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4. Electrical Characteristics
4.1 Absolute Maximum Ratings

Parameter Symbol Min MAX Unit Notes

Supply Voltage (I/O) VDD -0.3 4.6 V
Analog Supply Voltage VDDIO -0.3 4.6 V
Logic Input Voltage VIN -0.3 VDDIO+0.5 V
Operation Temperature Top -20 70 ℃
Storage Temperature Tst -30 80 ℃

4.2 Operating Conditions

Parameter Symbol Min TYP MAX Unit Notes
System Voltage VDD 2.5 2.8 3.3 V
Interface Operation Voltage VDDIO 1.65 1.8 3.3 V
Gate Driver High Voltage VGH 12.2 - 14.97 V
Gate Driver Low Voltage VGL -12.5 - -7.16 V
Operating Current for VDD IDD - 8 10 mA
Sleep_In Mode VDD I dd - 15 30 uA
Sleep_In Mode VDDIO I ddio - 5 10 uA

4.3 Backlight Unit

Parameter Symbol Min TYP MAX Unit Notes
Voltage for LED backlight VLED 2.8 3.0 3.2 V
Current for LED backlight ILED - 40 60 mA 2 LED
Power Consumption Pbl - 120 192 mW 1
2
Brightness Lbr 300 350 - cd/m 2
LED Life time - 20000 - - hr 3

Note:
1. Where ILED =40mA , VLED=3.0V , Pbl= ILED x VLED
2. Uniform measure condition:
a:Measure 9 point ,Measure location is show below:
b:Uniform=(Min brightness/Max brightness)x100%
c:Best Contrast.
2W/3
W/3
H/3

Active area(H)
2H/3

Active area(W)

3. The environmental conducted under ambient air flow ,at Ta=25±2oC,60%RH±5%

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4.4 Backlight Recommended Circuit
Motherboard driver backlight is need constant current circuit , if threated voltage screen after light
brightness difference . Current and power consumption of the machine are inconsistent , so recommend a
backlight driving circuit is best rated current . It is recommended to use IC (AW9364) . The reference circuit
is as follows:

4.5 AC Timing Characteristic of The LCD

Serial interface Characteristics(4-line serial):

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5. OPTICAL CHARACTERISTICS
Measuring
Item Symbol Min. Typ. Max. Unit Remark
Conditions

 = 0o 25 oC 80 85 -

 =180o 25 oC 80 85 -
Viewing Angle Deg Note1
 = 90 o
25 oC 80 85 -

 =270o 25 oC 80 85 -
Brightness Lbr -- - 300 350 - Cd/m2
Luminance
∆L -- - 75 -
Uniformity
Contrast Ratio CR -- 25 oC 1000 1500 - -- Note2
Response  = 0o 25
Tr+Tf o - 30 40 ms Note3
Time  = 0o C
o
X 25 C 0.263
White o
Y 25 C 0.275
X 25 oC 0.647
Red
Color of Y 25 oC 0.338
CIE o -0.03 +0.03 -- BM-7A
X 25 C 0.313
Coordinate Green Y 25 oC 0.618
o
X 25 C 0.151
Blue Y 25 oC 0.060
Transmittance
-- -- -- 4.6 5.5 - % --
(with polarizer)
ΘU
Note 1 Definition of Viewing Angle: 12’
o’cloc

ΘL ΘR

Φ180o Φ=0o
ΘD

6’ o’clock
Φ=270o
Note 2:Definition of Contrast Ratio (CR) :
measured at the center point of panel

Luminance with all pixels white

CR =
Luminance with all pixels black

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Note 3: Definition of Response Time : Sum of Tr and Tf :

6. Reliability

Contents of Reliability Tests

No. Item Conditions Note

1 High Temperature Operation 70C±2C, 120 hrs
2 Low Temperature Operation -20C±2C, 120 hrs
3 High Temperature Storage 80C±2C, 120 hrs
4 Low Temperature Storage -30C±2C, 120 hrs
5 High Temperature
60C±2C, 90% RH, 120 hrs
/Humidity Operation
-10°C→25°C→60°C→25°C→-10°C
6 Temperature Cycling 30min 5min 30min 5min 30min
10 cycle.
Total fixed amplitude:1.5mm.
7 Vibration Frequerncy:10~55Hz
Vibration Test
One cycle 60 seconds to 3 direction of X,Y,Z each
15 minutes.
Air Discharge:Apple ±4KV with 5 times.
8 ESD Test
Contact Discharge:Apple ±2KV with 5 times.

9 Drop Test

Note:
No charge on display and in operation under the following test condition.
Please note that the reliability test project requires the use of virgin samples
Condition : Unless otherwise specified ,tests will be conducted under the following condition.
Temperature:20C±5C.
Humidity:65±5%RH.
Tests will be not conducted under functioning state.

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7. Package Specifications

Item Quantity
Module 660 per Primary Box
Holding Trays (A) 15 per Primary Box
Total Trays (B) 16 per Primary Box (Including 1 Empty Tray)
Primary Box (C) 1~4 per Carton (4 as Major / Maximum)

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8. Incoming Inspection Standards

8.1. Inspection and Environment Conditions

8.1.1. Inspection Conditions:
(1) Inspection Distance :35 cm±5cm
(2) View Angle : Light-on Inspection Angle: ±5°
Cosmetic Inspection Angle: ±45°

(perpendicular to LCD panel surface)

8.1.2 Environment Conditions:

Ambient Temperature 23℃±

±5℃
Ambient Humidity 55±
±10％RH
Cosmetic Inspection More than 600 Lux
Ambient Illumination
Functional Inspection 300~500 Lux

8.1.3 Sampling Conditions:

（1） Lot Size:Quantity of shipment lot per model
（2） Sampling Method:

MIL-STD-105E
Sampling Plan Normal Inspection，Single Sampling
Level II
Major Defect 0.65%
AQL
Minor Defect 1.5%

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 8.1.4 Inspection Criteria
8.1.4.1 Cosmetic Inspection(Panel):

Check Item Classification Criteria(Unit: mm)

Black / White spot

Foreign material
(Round type)
Minor
Pinholes Stain
Particles inside cell.

Distance between 2 defects should more than 5mm apart.

Black and White line

Scratch
Minor
Foreign material
(Line type)

Distance between 2 defects should more than 5mm apart.

Scratches not viewable through the back of the display are
acceptable.

Glass Crack Minor

LCD with extensible crack line is unacceptable(When press the

cracked LCD Area, the line will expand,we define it is extensible
crack line)
Glass Chipping Pad
Area

Minor

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 Check Item Classification Criteria(Unit: mm)

Glass Chipping Rear

Of Pad Area

Minor

Glass Chipping
Except Pad Area

Minor

Glass Corner Chipping

Minor

Glass Burr

Glass burr don’t affect assemble and module dimension.

Minor

FPC Defect
1.Dent , pinhole width a＜W/2.
( W:circuitry width)
Minor
2.Open circuit is unacceptable.
3.No oxidation, contamination and distortion.

Bubble on Polarizer Minor

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 Check Item Classification Criteria(Unit: mm)

Dent on Polarizer Minor

Screen deformation
Test for insertion of plug gauge at highest warping point:
/ H≤0.25mm
The client has special requirements, according to drawing.

Bezel 1.No rust, distortion on the Bezel.

/
2.No visible fingerprints, stains or other contamination.

D:Diameter W: width L: length

1.Spot: D≤0.2 is acceptable
0.2＜D≤0.3, acceptable Inspection and Environment
Conditions
2dots are acceptable and the distance between defects
Should more than 5mm.
Touch Panel / D＞0.3 is unacceptable
2.Dent: D＞0.3 is unacceptable.
3.Scratch: W≤0.03,L≤10 is acceptable,
0.03＜W≤0.1, L≤10, acceptable Inspection and
Environment Conditions
Distance between 2 defects should more than 5 mm.
W＞0.1 is unacceptable.

1.No distortion or contamination on PCB terminals.

2.All components on PCB must same as documented on the
PCB /
BOM/component layout.
3.Follow IPC-A-600F.

Soldering / Follow IPC-A-610C standard.

Leak / Yellow light, OK。White light, According to the limit sample

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 Check Item Classification Criteria(Unit: mm)

The below defects must be rejected.

1. Missing vertical / horizontal segment.
2. Abnormal Display.
3. No function or no display.
4. Current exceeds product specifications.
Electrical Defect Major 5. LCD viewing angle defect.
6. No Backlight.
7. Dark Backlight.
8. Touch Panel no function.
9. Dark Dot –one Allowed.
10. Bright Dot- one Allowed.

9. Precautions When Using These TFT Display Modules

9.1 Handling Precautions
1) Since the display panel is being made of glass, do not apply mechanical impacts such us dropping
from a high position.
2) If the display panel is broken by some accident and the internal organic substance leaks out, be
careful not to inhale nor lick the organic substance.
3) If pressure is applied to the display surface or its neighborhood of the TFT display module, the cell
structure may be damaged and be careful not to apply pressure to these sections.
4) The polarizer covering the surface of the TFT display module is soft and easily scratched. Please
be careful when handling the TFT display module.
5) When the surface of the polarizer of the TFT display module has soil, clean the surface. It takes
advantage of by using following adhesion tape.
* Scotch Mending Tape No. 810 or an equivalent
Never try to breathe upon the soiled surface nor wipe the surface using cloth containing solvent
such as ethyl alcohol, since the surface of the polarizer will become cloudy.
Also, pay attention that the following liquid and solvent may spoil the polarizer:
* Water
* Ketone
* Aromatic Solvents
6) Hold TFT display module very carefully when placing TFT display module into the system housing.
Do not apply excessive stress or pressure to TFT display module. And, do not over bend the film
with electrode pattern layouts. These stresses will influence the display performance. Also,
secure sufficient rigidity for the outer cases.

7) Do not apply stress to the driver IC and the surrounding molded sections.
8) Do not disassemble nor modify the TFT display module.
9) Do not apply input signals while the logic power is off.

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 10) Pay sufficient attention to the working environments when handing TFT display modules to
prevent occurrence of element breakage accidents by static electricity.
* Be sure to make human body grounding when handling TFT display modules.
* Be sure to ground tools to use or assembly such as soldering irons.
* To suppress generation of static electricity, avoid carrying out assembly work under dry
environments.
* Protective film is being applied to the surface of the display panel of the TFT display module.
Be careful since static electricity may be generated when exfoliating the protective film.
11) Protection film is being applied to the surface of the display panel and removes the protection film
before assembling it. At this time, if the TFT display module has been stored for a long period of
time, residue adhesive material of the protection film may remain on the surface of the display
panel after removed of the film. In such case, remove the residue material by the method
introduced in the above Section 5).
12) If electric current is applied when the TFT display module is being dewed or when it is placed
under high humidity environments, the electrodes may be corroded and be careful to avoid the
above.

9.2 Storage Precautions

1) When storing TFT display modules, put them in static electricity preventive bags avoiding
exposure to direct sun light nor to lights of fluorescent lamps. and, also, avoiding high temperature
and high humidity environment or low temperature (less than 0°C) environments. (We
recommend you to store these modules in the packaged state when they were shipped
from .)
At that time, be careful not to let water drops adhere to the packages or bags nor let dewing occur
with them.
2) If electric current is applied when water drops are adhering to the surface of the TFT display
module, when the TFT display module is being dewed or when it is placed under high humidity
environments, the electrodes may be corroded and be careful about the above.
9.3 Designing Precautions
1) The absolute maximum ratings are the ratings which cannot be exceeded for TFT display module,
and if these values are exceeded, panel damage may be happen.
2) To prevent occurrence of malfunctioning by noise, pay attention to satisfy the VIL and VIH
specifications and, at the same time, to make the signal line cable as short as possible.
3) We recommend you to install excess current preventive unit (fuses, etc.) to the power circuit (VDD).
(Recommend value: 0.5A)
4) Pay sufficient attention to avoid occurrence of mutual noise interference with the neighboring
devices.
5) As for EMI, take necessary measures on the equipment side basically.
6) When fastening the TFT display module, fasten the external plastic housing section.
7) If power supply to the TFT display module is forcibly shut down by such errors as taking out the
main battery while the TFT display panel is in operation, we cannot guarantee the quality of this
OEL display module.
8) The electric potential to be connected to the rear face of the IC chip should be as follows:
* Connection (contact) to any other potential than the above may lead to rupture of the IC.
9.4 Precautions when disposing of the TFT display modules
1) Request the qualified companies to handle industrial wastes when disposing of the TFT display
modules. Or, when burning them, be sure to observe the environmental and hygienic laws and
regulations.
9.5 Other Precautions
1) When an TFT display module is operated for a long of time with fixed pattern may remain as an
after image or slight contrast deviation may occur.
Nonetheless, if the operation is interrupted and left unused for a while, normal state can be
restored. Also, there will be no problem in the reliability of the module.
2) To protect TFT display modules from performance drops by static electricity rapture, etc., do not
touch the following sections whenever possible while handling the TFT display modules.
* Pins and electrodes
* Pattern layouts such as the FPC

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 3) With this TFT display module, the TFT driver is being exposed. Generally speaking,
semiconductor elements change their characteristics when light is radiated according to the
principle of the solar battery. Consequently, if this TFT driver is exposed to light, malfunctioning
may occur.
* Design the product and installation method so that the TFT driver may be shielded from light in
actual usage.
* Design the product and installation method so that the TFT driver may be shielded from light
during the inspection processes.
4) Although this TFT display module stores the operation state data by the commands and the
indication data, when excessive external noise, etc. enters into the module, the internal status may
be changed. It therefore is necessary to take appropriate measures to suppress noise
generation or to protect from influences of noise on the system design.
5) We recommend you to construct its software to make periodical refreshment of the operation
statuses (re-setting of the commands and re-transference of the display data) to cope with
catastrophic noise.

10. Warranty:

The warranty period shall last twelve (12) months from the date of delivery. Buyer shall be completed to
assemble all the processes within the effective twelve (12) months. Limito technology Inc. shall be liable
for replacing any products which contain defective material or process which do not conform to the product
specification, applicable drawings and specifications during the warranty period. All products must be
preserved, handled and appearance to permit efficient handling during warranty period. The warranty
coverage would be exclusive while the returned goods are out of the terms above.
11.Notice:
No part of this material may be reproduces or duplicated in any form or by any means without the written
permission of reserves the right to make changes to this material without notice. does not assume any
liability of any kind arising out of any inaccuracies contained in this material or due to its application or use
in any product or circuit and, further, there is no representation that this material is applicable to products
requiring high level reliability, such as, medical products. Moreover, no license to any intellectual
property rights is granted by implication or otherwise, and there is no representation or warranty that
anything made in accordance with this material will be free from any patent or copyright infringement of a
third party. This material or portions thereof may contain technology or the subject relating to strategic
products under the control of Foreign Exchange and Foreign Trade Law of Taiwan and may require an
export license from the Ministry of International Trade and Industry or other approval from another
government agency.

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