1.3″

 

Please contact us for the exact PDF version of the datasheet.

 

Important： Due to the website layout and format limit, this specification & Datasheet of 1.3 inch square LCD module is for reference only. For complete SPEC&DATASHEET of the PDF format, please contact us.

CONTENTS

1. LCD MODULE PHYSICAL DATA 
2. OUTLINE DIMENSIONS 
3. ABSOLUTE MAXIMUM RATINGS
4. ELECTRICAL CHARACTERISTICS
5. ELECTRO-OPTICAL CHARACTERISTICS 
6. INTERFACE PIN CONNECTIONS
7. LCD SPECIFICATION OF QUALITY ASSURANCE
8. RELIABILITY
9. USING LCD MODULES

 

1. LCD MODULE PHYSICAL DATA

 1.1 Features

Display Type	TFT
Viewing Direction	ALL VIEW
Connection Type	COG + FPC
Driving IC	ST7789V
MPU interface	MCU-8bit,SPI-4W
Backlight	2 chip white LED in parallel

1.2 Mechanical Specification

Item	Standard Value	Unit
Screen size	1.3	inch
Number of dots	240RGB x 240 dots	pixel
LCM dimension	26.20 (W ) x29.22(H) x1.94(T)	mm
Active area	23.40(W) x23.40(H)	mm
Dot size	97.5 x 97.5	um
Approx. weight	TBD	g

 

2. OUTLINE DIMENSIONS 

 

3. ABSOLUTE MAXIMUM RATINGS

ITEM	SYMBOL	CONDITION	STANDARD VALUE			UNIT
			MIN	TYP	MAX
Power Supply Voltage(1)	VCC	Ta= +25℃	2.65	2.8	3.3	V
Power Supply Voltage(2)	IOVCC	Ta= +25℃	1.65	1.8	3.3
Input Voltage	Vin	Ta=+25℃	-0.3	–	Vcc+0.3	V
Operating Temperature	Top	—	– 20	–	+70	℃
Storage Temperature	Tst	—	– 30	–	+80	℃

NOTE:

• If the module is used above these absolute maximum ratings. It may become permanently damaged. Using the module within the following electrical characteristic conditions are also exceeded, the module will malfunction and cause poor reliability
• LCM should be grounded during handing LCM. 
• VDD>GND must be maintained.

 

4. ELECTRICAL CHARACTERISTICS

4.1 DC Characteristics

ITEM	SYMBOL	CONDITIONS	STANDARD VALUE			UNIT
			MIN	TYP	MAX
Power Supply Voltage for Logic	VCC-GND	Ta= +25℃	2.8	3.0	3.3	V
Input High Voltage for LCD	VIH	－	0.8Iovcc	－	Iovcc	V
Input Low Voltage for LCD	VIL	－	Vss	－	0.2 Iovcc	V
Output High Voltage for LCD	VOH	－	0.8Iovcc	－	Iovcc	V
Output Low Voltage for LCD	VOL	－	Vss	－	0.2 Iovcc	V

4.2 Back-Light unit

PARAMETER	SYMBOL	REMARK	STANDARD VALUE			UNIT
			MIN	TYP	MAX
FORWARD VOLTAGE	VF	If =30mA	3.0	3.2	3.4	V
LUMINOUS INTENSITY	Iv	If =30mA		3500		cd/m2
LUMINOUS UNIFORMITY	Iv-m	(min/max)/100	–	80	–	%
CHROMATICITY COORDINATES	X	If =30mA	0.260	–	0.310
	Y		0.260	–	0.310
OPERATING TEMPERATURE	-20℃ ~ 70℃
STORAGE TEMPERATURE	-30℃ ~ 80℃

4.3 AC Characteristics

Refer to IC datasheet    

5. ELECTRO-OPTICAL CHARACTERISTICS

Paramete			Symbol	Condition	Min	Typ	Max	Unit	Remark
Threshold voltage			Vsat		2.7	3.3	3.8	V	Note 1         Not 2
			Vth		1.2	1.5	1.8	V
Viewing Angle range	Horizontal		Left(9’)	CR > 10	–	70	–	Deg
			Right(3’)		–	70	–	Deg
	Vertical		Up(12’)		–	70	–	Deg
			Down(6’)		–	70	–	Deg
Contrast ratio			C/R	Ө = 0°	–	700	–		Not 3
Transmittance			T(%)	Ө = 0°	–	4.8	–		Not 4
White Chromaticity			xw	Ө = 0°	–	0.304	–		Not 5 *Color Filter Glass
			yw		–	0.327	–
Reproduction Of color		Red	xR	Ө= 0°	–	0.623	–
			yR		–	0.331	–
		Green	xG		–	0.295	–
			yG		–	0.596	–
		Blue	xB		–	0.142	–
			yB		–	0.108	–
Response Time			Tr+Tf	Ө= 0°		20		smec	Not 6

Note :

• The definition of Vth & Vsat

• The viewing angle is the angle at which the contrast ratio is greater than 10. The viewing is determined for the horizontal or 3, 9 o’clock direction and the vertical or 6, 12 o’clock direction with respect to the optical axis which is normal to the LCD surface.

• Contrast measurements shall be made at viewing angle of Ө= 0° and at the center of the LCD surface. Luminance shall be measured with all pixels in the view fieldset first to white, then to the dark (black) state.

CR = Luminance when displaying a white raster / Luminance when displaying a black raster

• Transmittance is the value of Polarizer.
• The color chromaticity coordinates specified in the table below. Shall be calculated from the spectral data measured with all pixels first in red, green, blue and white. Measurements shall be made at the center of the C/F. Measurement condition is C – light source & Halogen Lamp.

• The electro-optical response time measurements shall be made as FIGURE 3 shown in the Appendix by switching the “data” input signal ON and OFF. The times needed for the luminance to change from 10% to 90% is Tr, and 90% to 10% is Td.

 

 

6. INTERFACE PIN CONNECTIONS

 

PIN NO.	SYMBOL	FUNCTION DESCRIPTIONS
1	LEDA	Backlit positive
2	LEDK	Backlit negative
3	GND	Power ground
4	VDD2.8	Power for LCM    VDD2.8=VCC
5	VIO1.8	Power for LCM I/O        VIO1.8=IOVCC
6	IM1/IM2	IM1=IM2=0 select MCU-8bit, IM1=IM2=1 select SPI-4W
7	RESET	The Reset signal
8	CS	The chip select signal
9	DC(SCL)	MCU interface data/command select signal      (SPI clock signal)
10	WR(A0)	MCU write signal (SPI interface data/command select signal)
11	RD	MCU Read signal (SPI interface, not used, please fix to GND)
12	SDA	SPI interface input signal
13	DB0	MCU interface data signal
14	DB1	MCU interface data signal
15	DB2	MCU interface data signal
16	DB3	MCU interface data signal
17	DB4	MCU interface data signal
18	DB5	MCU interface data signal
19	DB6	MCU interface data signal
20	DB7	MCU interface data signal
21	TE	Tearing effect signal is used to synchronize MCU to frame memory
22	NC	OPEN
23	GND	Power ground
24	GND	Power ground

 

 

 

7. LCD SPECIFICATION OF QUALITY ASSURANCE

 

7.1 Summary

The customer should check and accept the products of VISLCD within one month after the reception. This standard for Quality Assurance should affirm the quality of LCD products to supply to the purchaser. The entire process is controlled according to QS9000.

7.2 The standard for quality test

1) Inspection Before delivering, the supplier should take the following tests, and affirm the quality of the LCD product. 2) Electro-Optical Characteristics According to the individual specification to test the product. 3) Test of Appearance Characteristics: According to the individual specification to test the product. 4)Test of Reliability Characteristics According to the definition of reliability on the specification for the test product. 5) Delivery Test Before delivering, the supplier should take the delivery test. 6)Sampling Method: GB/T2828.1-2003, Level II 7) The defects classify of AQL as following Major defect: AQL=0.65 Minor defect: AQL=1.5

7.3 Nonconforming Analysis & Deal With Manners

☆Nonconforming Analysis 1) Purchaser should supply the detail data of the nonconforming LCM sample and the non-suitable state. 2) After accepting the detail data from the purchaser, the analysis of nonconforming should be finished in two weeks. 3) If the supplier can not finish the analysis on time, it must announce the purchaser before two weeks. ☆Disposition of nonconforming 1) If you find any supplier defect during the assembly line, the supplier must change the good product for every defect after recognition. 2) Both suppliers and customers should analyze the reason and discuss the disposition of nonconforming when the reason for nonconforming is not sure.

7.4 Agreement items

Both sides should discuss together when the following problems happen: 1) There is any problem of the standard of quality assurance, and both sides think that must be a modifier. 2) There is an argument item which does not record in the quality assurance. 3) Any other special problem.

7.5 Standard of the LCD Appearance Test

☆Manner of appearance test 1) The test must be under 20W*2 or 40W fluorescent light, and the distance of view must be at 30±5 cm. 2) When test the model of Transmissive product must add the reflective plate. 3) Definition of Area: A Area: Active area B Area: Viewing area C Area: Out of viewing area D Area: Seal area ☆Basic principle:  1) It will accord to the AQL when the standard can not be described. 2) The sample of the lowest acceptable quality level must be discussed by both supplier and customer when any dispute happened. 3) Must add a new item on time when it is necessary.

7.6 Inspection specification of LCM

NO	Item	Criterion	AQL
01	Electrical Testing	1.1  Missing vertical, horizontal segment, segment contrast defect. 1.2  Missing character, dot or icon. 1.3  Display malfunction. 1.4  No function or no display. 1.5  Current consumption exceeds product specifications. 1.6  LCD viewing angle defect. 1.7  Contrast defect	0.65

 

02	LCD black spots, white spots, color spots,  contamination, scratches (display/ non-display)	2.1 Round type: As the following drawing φ=(x+y)/2 Size Acceptable QTY Remark A.A V.A φ≦0.10 Ignore Ignore   No more than two spots within 5mm 0.10<φ≦ 0.15 2 3 0.15 ≦φ≦0.2 1 2 0.20<φ 0 0 Total 3 5       2.2        Line Type: (As the following drawing) Length Width Acceptable QTY Remark     A.A V.A   — W≦0.03 Ignore Ignore   L≦2.5 0.03< 2 3 No W≦0.05     more than L≦1.5 0.05<     two lines W≦0.08     within 5mm — 0.08< W 0 0	1.5
03	Polarizer bubbles Ignore	If bubbles are visible, judge using black spot specification, not easy to find, must check-in specify direction. Size Acceptable QTY   A. A V. A φ≦0.30 Ignore Ignore 0.30<φ≦0.60 2 3   0 0	1.5

04

Cracked glass

The LCD with extensive crack is not acceptable.

0.65

 

05	Backlight elements	5.1  Illumination source flickers when lit. 5.2  Spots or scratches that appear when lit must be judged using LCD spots, lines, and contamination standards. 5.3  Backlight doesn’t light or color is wrong	0.65 1.5       0.65
		6.1 No unmelted solder paste may be present on the PCB.	1.5
		6.2 No cold solder joints, missing solder connections, oxidation or icicle.
06	Soldering	6.3 No residue or solder balls on PCB.	1.5
		6.4 No short circuits in components on PCB.	1.5
			0.65
		7.1 No oxidation, contamination, curves or, bend on the interface pin (OLB) of TCP.	1.5
		7.2 No cracks on interface pin(OLB) of TCP	0.65
		7.3 NO contamination, solder residue or solder balls on	1.5
		product.
		7.4 The IC on the TCP may not be damaged, circuits.	0.65
		7.5 The residual rosin or tin oil of soldering (component or chip	1.5
		component) is not burned into brown or black color.
		7.6 Sealant on top of the ITO circuit has not hardened	1.5
07	General appearance	7.7  Pin type must match type in the specification sheet. 7.8  LCD pin loss or missing pins.	0.65 0.65
		7.9 Product packaging must the same as specified on packaging specification sheet.	0.65
		7.10 Product dimension and structure must conform to the product specification sheet.	0.65

 

8. RELIABILITY TEST

 

NO.	Test Item	Description	Test Condition
1	High-temperature storage	Endurance test applying the high storage temperature for a long time	70℃,24 H
2	Low-temperature storage	Endurance test applying the low storage temperature for a long time	-20℃,24H
3	High-temperature operation	Endurance test applying the electric stress under high temperature for a long time	60℃,24H
4	Low-temperature operation	Endurance test applying the electric stress under low temperature for a long time	-10℃,24H
5	High temperature /humidity storage	Endurance test applying the high temperature and high humidity storage for a long time	50℃，90% R.H 24H
6	High temperature /humidity operation	Endurance test applying electric stress under high temperature and high humidity for a long time	40℃ 90% R.H 24H
7	Temperature Cycle	Endurance test applying the low and high-temperature cycle -20℃ → 25℃ → 70℃ →25℃ 30min 5min 30min 5min one cycle	-20℃/70℃ 10 cycles
8	Vibration test	Endurance test applying the vibration during transportation and using	10Hz~50Hz Swing:0.75mm time:30min
9	Fall test	Endurance test dropping the LCM from a high place	600mm height

   

10

Static electricity test

Endurance test applying static electric stress to terminal

Contact discharge: ±2KV~4KV Air discharge: ±2KV~8KV

NOTE: TEST CONDITION

• Temperature and humidity: If no specification, temp. set at 25±2°C, humidity set at 60±5%RH.
• Operating state: Samples subject to the test shall be in “operating” condition.

 

 

 

9. HOW TO USE LCD MODULES

 

9.1     LIQUID CRYSTAL DISPLAY MODULES

LCD is composed of glass and polarizer. Pay attention to the following items when handling.

• Please keep the temperature within the specified range for use and storage. Polarization degradation, bubble generation or polarizer peel-off may occur with high temperatures and high humidity.
• Do not touch, push or rub the exposed polarizers with anything harder than an HB pencil lead (glass, tweezers, etc.).
• N-hexane is recommended for cleaning the adhesives used to attach front/rear polarizers and reflectors made of organic substances which will be damaged by chemicals such as acetone, toluene, ethanol, and isopropyl alcohol.
• When the display surface becomes dusty, wipe gently with absorbent cotton or other soft material like chamois soaked in petroleum benzin. Do not scrub hard to avoid damaging the display surface.
• Wipe off saliva or water drops immediately, contact with water over a long period of time may cause deformation or color fading.
• Avoid contacting oil and fats.
• Condensation on the surface and contact with terminals due to cold will damage, stain or dirty the polarizers. After products are tested at the low temperature they must be warmed up in a container before coming is contacting room temperature air.
• Do not put or attach anything on the display area to avoid leaving marks on.
• Do not touch the display with bare hands. This will stain the display area and degradation insulation between terminals (some cosmetics are determined to the polarizers).
• As glass is fragile. It tends to become or chipped during handling, especially on the edges. Please avoid dropping or rising.

9.2     PRECAUTION FOR HANDING LCD MODULES

Since LCM has been assembled and adjusted with a high degree of precision, avoid applying excessive shocks to the module or making any alterations or modifications to it.

• Do not alter, modify or change the shape of the tab on the metal frame.
• Do not make extra holes on the printed circuit board, modify its shape or change the positions of components to be attached.
• Do not damage or modify the pattern writing on the printed circuit board.
• Absolutely do not modify the zebra rubber strip (conductive rubber) or heat seal connector.
• Except for soldering the interface, do not make any alterations or modifications with a soldering iron.
• Do not drop, bend or twist LCM.
• In order to avoid the cracking of the FPC, you should pay attention to the area of FPC(R50mm) where the FPC was bent .the edge of overlay; the area of the surface of Ni-Au plating, the area of soldering land, the area of through-hole.

9.3     ELECTRO-STATIC DISCHARGE CONTROL

Since this module uses a CMOS LSI, the same careful attention should be paid to electrostatic discharge as for an ordinary CMOS IC.

• Make certain that you are grounded when handing LCM.
• Before removing LCM from its packing case or incorporating it into a set, be sure the module and your body have the same electric potential.
• When soldering the terminal of LCM, make certain the AC power source for the soldering iron does not leak.
• When using an electric screwdriver to attach LCM, the screwdriver should be of ground potentiality to minimize as much as possible any transmission of electromagnetic waves produced sparks coming from the commutator of the motor.
• As far as possible make the electric potential of your work clothes and that of the workbench the ground potential.
• To reduce the generation of static electricity be careful that the air in the work is not too dried. Relative humidity of 0%-60% is recommended.

9.4     PRECAUTIONS FOR OPERATION

• The viewing angle varies with the change of liquid crystal driving voltage (VO). Adjust VO to show the best contrast.
• Driving the LCD in the voltage above the limit shortens its life.
• Response time is greatly delayed at a temperature below the operating temperature range. However, this does not mean the LCD will be out of the order. It will recover when it returns to the specified temperature range.
• If the display area is pushed hard during operation, the display will become abnormal. However, it will return to normal if it is turned off and then back on.
• Condensation on terminals can cause an electrochemical reaction disrupting the terminal circuit. Therefore, it must be used under the relative condition of 40°C, 50% RH.
• When turning the power on, input each signal after the positive/negative voltage becomes stable.

9.5  STORAGE

When storing LCDs as spares for some years, the following precaution is necessary.

• Store them in a sealed polyethylene bag. If properly sealed, there is no need for desiccant.
• Store them in a dark place. Do not expose to sunlight or fluorescent light, keep the temperature between 0°C and 35°C.
• The polarizer surface should not come in contact with any other objects. (We advise you to store them in the container in which they were shipped)
• Environmental conditions :

– Do not leave them for more than 160hrs. at 70°C. – Should not be left for more than 48hrs. at -20°C.

9.6     SAFETY

• It is recommended to crush damaged or unnecessary LCDs into pieces and wash them off with solvents such as acetone and ethanol, which should later be burned.
• If any liquid leaks out of a damaged glass cell and comes in contact with the hands, wash off thoroughly with soap and water.

9.7     LIMITED WARRANTY

Unless agreed between VISLCD and customer, VISLCD will replace or repair any of its LCD modules which are found to be functionally defective when inspected in accordance with VISLCD LCD modules acceptance standards (copies available upon request) for a period of one year from date of shipments. Cosmetic/visual defects must be returned to VISLCD within 90 days of shipment. Confirmation of such date shall be based on freight documents. The warranty liability of VISLCD to repair and/or replacement on the terms set forth above. VISLCD will not be responsible for any subsequent or consequential events.

9.8     RETURN LCM UNDER WARRANTY

No warranty can be granted if the precautions stated above have been disregarded. The typical examples of violations are :

• Broken LCD glass.
• Circuit modified in any way, including the addition of components.

Module repairs will be invoiced to the customer upon mutual agreement. Modules must be returned with a sufficient description of the failures or defects. Any connectors or cable installed by the customer must be removed completely without damaging the PCB’s eyelet, conductors and terminals.

 

1. LCM Outline drawing

 

     2. Pin Assignment

Pin No.	Symbol	I/O	Description
1-2	LEDK	P	Power supply Cathode input for backlight
3-4	GND	P	Ground
5	TE	I/	Serves TE (Tearing Effect) pin of each scan line.
6	RD	I	Read enable in 8080 MCU parallel interface.
7	WR	I	Write enable in MCU parallel interface
8	RS	I	Data/Command select pin. H: Data; L: Command.
9	CS	I	Chip selection pin
10	RESET	I	Reset signal pin
11-12	GND	P	Ground
13-14	VDD2.8V	P	Power supply to the internal Analog
15-22	DB0-DB7	I/O	Parallel Data input/output Pin
23-24	LEDA	P	Power supply Anode input for backlight