Topway Display LMT035DNJFWD-1 LCD Module User Manual
- October 30, 2023
- Topway Display
Table of Contents
- Topway Display LMT035DNJFWD-1 LCD Module
- Product Information
- Product Usage Instructions
- Basic Specifications
- Absolute Maximum Ratings
- Electrical Characteristics
- AC Characteristics
- Optical Characteristics
- Inspection Condition
- Packing Drawing
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Topway Display LMT035DNJFWD-1 LCD Module
Product Information
The LMT035DNJFWD-1 is an LCD module that provides high-quality display
technology with a screen size of 3.5 inches (diagonal). The module has a color
depth of up to 262K colors and a resolution of 320×240 pixels. The active area
of the module is 70.08mm x 52.56mm, and the dot pitch is 0.219mm x 0.219mm.
The display mode is transmissive, and the pixel configuration is RGB vertical
stripe.
The viewing direction is 6 o’clock, and the polarizer surface treatment is
anti-glare. The backlight type used in this module is a white LED backlight.
The outline dimension of the module is 76.9mm x 63.9mm x 3.2mm (max).
Product Usage Instructions
To use the LMT035DNJFWD-1 LCD module, please follow these instructions:
Basic Specifications
- Scree n Size(Diagonal) : 3.5”
- Color Depth: 65K/262K Color
- Number of dots : 320(RGB)x480
- Active Area : 48.96×73.44mm
- Dot Pitch : 0.153×0.153mm
- Display Technology : a-Si TFT active matrix
- Display Mode : Transmissive With Normally white
- Pixel Configuration : RGB Vertical Stripe
- Viewing Direction : 12H (1) (gray scale inverse) 6H (2)
- Polarizer Surface Treatment: HC
- Backlight Type: LEDs
- Outline Dimension : 55.26x 84.69 x 2.2 mm (exclude FPC , see dwg for details)
- Operating Temperature : – 20 ~ +70°C (No Condensation)
- Storage Temperature : – 30 ~ +80°C (No Condensation)
Note :
- For saturated color display content (eg. pure-red, pure-green, pure-blue or pure-colors-combinations).
- For “color scales” display content.
- Color tone may slightly change by temperature and driving condition.
Block Diagram
Terminal Functions
Pin No. | PIN Name | I/O | Descriptions |
---|---|---|---|
1 | VSS | Power | Negative power supply,0V |
2,3 | IOVDD | Power | IO Positive Power |
4,5 | VDD | Power | Positive power supply |
6 | IM0 | Input | MPU system interface mode select |
7 | IM1 | Input | MPU system interface mode select |
8 | IM2 | Input | MPU system interface mode select |
9 | RESX | Input | Reset signal |
RESX = L, Initialization is executed RESX = H, Normal running.
10| VSYNC| Input| Vertical sync. signal in RGB mode
If no used, please connect this pin to VSS
11| HSYNC| Input| Horizontal sync, signal in RGB mode
If no used, please connect this pin to VSS
12| PCLK| Input| Pixel clock signal in RGB mode
If no used, please connect this pin to VSS
13| DE| Output| Data enable signal in RGB mode
If no used, please fix this pin at VSS level
14| DB17/R5,Msb| I/O| Data Bus
15| DB16/R4| I/O
:| :| :
18| DB13/R1| I/O
19| DB12/R0,Lsb| I/O
20| DB11/G5,Msb| I/O
21| DB10/G4| I/O
:| :| :
24| DB7/G1| I/O
25| DB6/G0,Lsb| I/O
26| DB5/B5,Msb| I/O
27| DB4/B4| I/O
:| :| :
30| DB1/B1| I/O
31| DB0/B0,Lsb| I/O
32| VSS| Power| Negative power supply,0V
33| DOUT| Output| Serial data output pin
If no used, leave this pin open
34| SDA| I/O| serial data input /output bi-direction pin
35| RDX| Input| serve as a read signal
36| WRX_SCL| Input| (WR) Write data enable pin in DBI Type B (SCL) Write data
enable pin in DBI Type C
If no used, please connect this pin to IOVDD
37| DCX| Input| Data/Command Selection pin Low: Command
High: Parameter
38| CSX| Input| Chip select signal
If no used, please connect this pin to IOVDD
39| NC(XR)| ****
–
|
40| NC(YD)| No connect
41| NC(XL)
42| NC(YU)|
43| LEDA| Power| LED ANODE
44~49| LEDK| Power| LEDK CATHODE
50| VSS| Power| Negative power supply,0V
Absolute Maximum Ratings
Items | Symbol | Min. | Max. | Unit | Condition |
---|---|---|---|---|---|
Power Voltage | VDD | -0.3 | +3.6 | V | VSS = 0V |
Input Voltage | VIN | -0.3 | +3.6 | V | VSS = 0V |
Operating Temperature | TOP | -20 | +70 | °C | No Condensation |
Storage Temperature | TST | -30 | +80 | °C | No Condensation |
Cautions:
Any Stresses exceeding the Absolute Maximum Ratings may cause substantial
damage to the device. Functional operation of this device at other conditions
beyond those listed in the specification is not implied and prolonged exposure
to extreme conditions may affect device reliability.
Electrical Characteristics
DC Characteristics
Items| Symbo l| MIN.| TYP.| MAX.| Unit|
Condition / Application Pin
---|---|---|---|---|---|---
Operating Voltage| VDD| 2.65| 3.0| 3.6| V| VDD,IOVDD
Input High Voltage| VIH| 0.7xVDD| –| VDD| V| IM0~IM2,RESX,VSYNC,HSY
NC,PCLK,DB17/R5,Msb, DB16/R4~DB13/R1 ,DB12/R0,Lsb,DB11/G5,Msb, DB10/G4~DB7/G1
,DB6/G0,Lsb,DB5/B5,Msb, DB4/B4~DB1/B1,DB0/B0,Lsb, SDA,RDX,WRX_SCL,DCX, CSX,
Input Low Voltage| VIL| -0.3| –| 0.3xVDD| V
Output Low Voltage| VOL| 0| –| 0.99| V| DB17/R5,Msb, DB16/R4~DB13/R1
,DB12/R0,Lsb,DB11/G5,Msb, DB10/G4~DB7/G1 ,DB6/G0,Lsb,DB5/B5,Msb,
DB4/B4~DB1/B1,DB0/B0,Lsb, DE,SDA,DOUT
Operating Current| IDD| –| 8| –| mA| VDD (*1)
Note: *1. VDD=3.0V
LED Backlight Circuit Characteristics
Items| Symbol| MIN.| TYP.| MAX.| Unit|
Remark
---|---|---|---|---|---|---
Forward Voltage| Vf| –| 3.2| –| V| For each LED
Forward Current| If| –| 20| –| mA| For each LED
LED lifetime| –| –| 30000| –| Hours|
Note1: LED CIRCUIT DIAGRAM
Note 2: LED: VF =3.2V, IF =20mA(TYP)
Note 3 :IF is defined for one LED.
Optical performance should be evaluated at Ta=25℃ only.
If LED is driven by high current, high ambient temperature & humidity
condition.
The life time of LED will be reduced. Operating life means brightness goes
down to 50% initial brightness.
Typical operating life time is estimated data.
Note 4: Under LCM operating, the stable forward current should be
inputted. And forward voltage is for reference only.
AC Characteristics
DBI Type B
DBI Type B Timing Characteristic
DBI
Type B Data Bus
8-bit Data Bus for 16-bit/pixel (RGB 5-6-5 Bits Input), 65K-color
8-bit
Data Bus for 18-bit/pixel (RGB 6-6-6Bits Input), 262 K-color
9-bit Data Bus for 18-bit/pixel (RGB 6-6-6Bits Input), 262 K-color
16-bit Data Bus for 16-bit/pixel (RGB 5-6-5 Bits Input), 65K-color
16-bit Data Bus for 18-bit/pixel (RGB 6-6-6Bits Input), 262 K-color
18-bit Data Bus for 18-bit/pixel (RGB 6-6-6Bits Input), 262 K-color
3-Line SPI Interface Timing Characteristic
4-Line SPI Interface Timing Characteristic
Note:Ta=-30 to 70℃,IOVDD,VDD=2.5V to 3.3V,VSS=0V,T=10+/-0.5ns.
Please refer to IC: ILI9488 data sheet for more details.
DPI Interface
DPI Interface Characteristic
DPI
Interface pixel format
The
Pixel clock (DCLK) runs all the time without stop. It is used to enter VS, HS,
DE and D[17: 0] states when there is a rising edge of the DCLK. The DCLK
cannot be used as the internal clock for other functions of the display
module.
Vertical synchronization (VS) is used to indicate when a new frame of the
display is received. This is low enable and its state is read to the display
module by a rising edge of the DCLK signal.
Horizontal synchronization (HS) IS used to indicate when a new line of the
frame is received. This is low enable and its state is read to the display
module by a rising edge of the DCLK signal.
Data Enable (DE) is used to indicate when the RGB information that should be
transferred in the display is received. This is a high enable, and its state
is read to the display module by a rising edge of the DCLK signal. D[17:0] is
used to indicate what is the information of the image that is transferred on
the display (when DE = 0 (low) and there is a rising edge of DCLK). D[17:0]
can be 0(low) or 1(high). These lines are read by a rising edge of the DCLK
signal. In RGB interface modes, the input display data is written to GRAM
first then outputs the corresponding source voltage according to the gray data
from GRAM.
Note:Please refer to IC: ILI9488 data sheet for more details.
DPI(RGB) Interface timing
Power ON/OFF Sequence
Notes:
- There are not any abnormal visual effects when one power mode changes to another power mode.
- There is not any limitation, which is not specified by users, when one power mode changes to another power mode.
IOVDD and VDD can be applied or powered down in any order. During the Power
Off sequence ,if the LCD is in the Sleep In mode, VDD and IOVDD must be
powered down with a minimum of 120 msec.If the LCD is in the Sleep In mode,
VDD and IOVDD can be powered down with a minimum of 0msec after the /RST has
been released. /CS can be applied at any time or can be permanently grounded.
/RST has priority over /CS.
Notes:
- There will be no damage to the ILI9488 if the power sequences are not met.
- There will be no abnormal visible effects on the display panel during the Power On/Off Sequence.
- There will be no abnormal visible effects on the display between the end of the Power On Sequence and before receiving the Sleep Out command, and also between receiving the Sleep In command and the Power Off Sequence.
- If the /RST line is not steadily held by the host during the Power On Sequence as defined in Sections 11.1 and 11.2 ( ILI9488 datasheet ), then it will be necessary to apply the Hardware /RST after the completion of the Host Power On Sequence to ensure correct operations. Otherwise, all the functions are not guaranteed.
- When the power is turned on, the climb period timing (Trise) must be greater than 10us.
- Keep data pins D[17:0] at low level, or IOVDD comes later
Reset timing
Item | Symbol | MIN. | TYP. | MAX. | Unit |
---|---|---|---|---|---|
Reset LOW pulse width | tRW | 1.0 | – | – | us |
Reset time | TRT | – | – | 120 | ms |
Note:Please refer to IC: ILI9488 data sheet for more details.
Optical Characteristics
Note 1: Detinition ot optical measurement system.
The optical characteristics should be measured in dark room. After 5 Minutes
operation, the optical properties are measured at the center point of the LCD
screen. All input terminals LCD panel must be ground when measuring the center
area of the panel.
Note 2: Definition of viewing angle range and measurement system.
viewing angle is measured at the center point of the LCD by
CONOSCOPE(ergo-80).
Note 3: Definition of contrast ratio
“White state”: The state is that the LCD should drive by white.
“Black state”: The state is that the LCD should drive by black.
white: To be determined black: To be determined.
Note 4: Definition of Response time
The response time is defined as the LCD optical switching time interval
between “White” state and “Black” state. Rise time (ToN) is the time between
photo detector output intensity changed from 90% to 10%. And fall time (Torr)
is the time between photo detector output intensity changed from 10% to 90%
Note 5: Definition of color chromaticity (CIE1931)
Color coordinates measured at center point of LCD.
Note 6: Definition of Luminance Uniformity
Active area is divided into 9 measuring areas (Refer Fig. 2). Every measuring
point is placed at the center of each measuring area.
Lmax:
The measured Maximum luminance of all measurement position.
Lmin: The measured Minimum luminance of all measurement position.
Note 7: Definition of Luminance:
Measure the luminance of white state at center point.
Inspection Condition
Unless otherwise stated,all the inspections are carryout under the following condition
No. | Items | Conditions |
---|---|---|
1 | Lighting | Illumination: Appearance 300-700Lux |
2 | Inspection Distance | 30-40cm form the test sample,within normal viewing |
angle
3| Temperature| Room Temperature (25 ºC), no condensation
4| Viewing Angle| U/D: 45º/45º, L/R: 45º/45º
5| Inspection Time| 15 seconds
6| Defect Allowance| Under 5.0” (include 5.0”): 3
5.0” to 7.0”: 4
Above 7.0”: 6
Display Pattern
No. | Items /Contents | Type | Standard | Judgment |
---|---|---|---|---|
CR | MA | MI | ||
1 | No Display/Unstable Display | √ | ||
2 | Line defect | √ | ||
3 | Display abnormally | √ | ||
4 | Function Defective | √ | ||
5 | Glass Crack | √ | ||
6 | Spot Defect Including: | |||
Black spot, White spot, Foreign particle, Polarizer dirt, Cell particle | ||||
√ | Under 5.0” (include 5.0”) 5 | |||
(a+b)/2≤0.15 | Allowed | |||
0.15<(a+b)/2≤0.25 | 3 max. | |||
(a+b)/2>0.25 | Not Allowed |
Above 5.0” 5
(a+b)/2≤0.25| Allowed
0.25<(a+b)/2≤0.5| 3 max.
(a+b)/2>0.5| Not Allowed
7| Line Defect Including: Black line, White line, Scratch| | | √| Under 5.0” (include
5.0”)
---|---|---|---|---|---
a≤0.03| Allowed
0.03<a≤0.05 and b≤5.0| 2 max.
a>0.05 or b>5.0| Not Allowed
Above 5.0”
a≤0.03| Allowed
0.03<a≤0.05 and b≤5.0| 4 max.
a>0.05 or b>5.0| Not Allowed
8| Polarizer Dent/Bubble| | | √| Under 5.0” (include 5.0”)
(a+b)/2≤0.25| Allowed
0.25< (a+b)/2≤0.5| 3 max.
(a+b)/2>0.5| Not Allowed
Above 5.0” 5
(a+b)/2≤0.25| Allowed
0.25< (a+b)/2≤0.5| 3 max.
(a+b)/2>0.5| Not Allowed
9| Bright dot defect| | | | √| Under 5.0” (include 5.0”)| 0 max.
5.0” to 7.0”| 2 max.
Above 7.0”| 3 max.
3 consecutive dots| Not Allowed
10| Dark dot defect| | | | √| Under 5.0” (include 5.0”)| 2 max.
5.0” to 7.0”| 4 max.
Above 7.0”| 5 max.
3 consecutive dots| Not Allowed
11| Bright dot defect + Dark dot defect| | | √| Under 5.0” (include 5.0”)| 2
max.
5.0” to 7.0”| 4 max.
Above 7.0”| 5 max.
12| FPC or FFC broken FPC/FFC| | √| | —| Not Allowed
13| PCBA defect PCBA| | √| | Refer to IPC-A-610 IPC-A-610| —
Quality Level and Sampling
Items | Standard |
---|---|
Sampling Standard | MIL-STD-105E |
Sampling Level | Ⅱ |
AQL level | MA: AQL=0.65 MI: AQL=1.0 |
Handling Precaution
-
Never attempt to disassemble or rework LCD module
-
Never let LCD module contact with liquids
-
LCD module can be easily damaged by electrostatic charge.
Please maintain an optimum anti-static working environment. -
LCD panel is made with glass.
Any mechanical shock (eg. Vibration, distortion, extrusion, impact,drop) will damage the LCD module -
Avoid showing a display pattern on screen for a long time (continuous ON segment)
-
The color and evenness of the display may slightly vary with the temperature
-
Signal and Power supply excess the operation range may damage the LCD module
-
Avoid touching the LCD surface to prevent any scratch on its surface
Packing Drawing
Per Carton
Note :
-
LCD Display Type : TFT.Transmissive
-
Pixel Arrangment • RGB-STRIPE
-
Color Depth : 262k Color
-
Operating Voltage‹VDD , IDVDD> : 3.0V
-
Backlight : White LEDs
-
Backlight Supply : 6×20mA (VF=3.2V, TYP)
-
Recommended Connector K1 FH19SC-50S-0.5SHCHIROS> Or Equivalent
-
Operating
Temperature : -20°C~70°C -
Storage
Temperature: -30°C~80°C
Note: Please keep the operating temperature of the module between -20°C to 70°C and the storage temperature between -30°C to 80°C. The color tone of the display may slightly change by temperature and driving condition.