TOPWAY LMT043ENCFWA LCD Module User Manual

: August 9, 2024
: Topway

Table of Contents

LMT043ENCFWA
- LCD Module User Manual
- References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

LMT043ENCFWA

LCD Module User Manual

Prepared by:

Wangxiao

Date: 2024-01-25

| Checked by:

Date:

| Approved by:

Date:

---|---|---

Rev.

| Descriptions|

Edit

|

Release Date

---|---|---|---

0.1

| Preliminary New Release|

Wangxiao

|

2023-11-9

0.2

| Update 1.General Specification, 1.2.Terminal Functions, 3.2.LED Backlight Circuit Characteristics, 4.Optical Characteristics and the Outline Dwg|

Wangxiao

|

2024-01-20

0.3

1. General Specification

Screen Size(Diagonal) :	4.3”
Active Area :	95.04 x 53.86 (mm)
Number of dots :	800(RGB) x 480
Pixel Pitch :	0.1188 x 0.1122 (mm)
Color Depth :	16.7M colors
Display Technology :	a-Si
Display Mode :	Normally Black, Transmissive
Display Interface :	RGB_24bit
Viewing Direction :	ALL
Surface Treatment :	Anti-Glare
Operating Temperature :	-20 ~ +70°C
Storage Temperature :	-30 ~ +80°C

1.1 Block Diagram

1.2 Terminal Functions

Pin No.| Pin Name|

I/O

| Descriptions
---|---|---|---
1| VLED-|

P

| Backlight LED Cathode supply
2| VLED+|

P

| Backlight LED Anode supply
3| GND|

P

| Power Ground (0V)
4| VDD|

P

| Positive Power Supply
5| R0|

I/O

| Red color data input
:| :
12| R7
13| G0|

I/O

| Green color data input
:| :
20| G7
21| B0|

I/O

| Blue color data input
:| :
28| B7
29| GND|

P

| Power Ground (0V)
30| DCLK|

I

| Clock signal; latching data at the falling edge
31| DISP|

I

| Display control / standby mode selection.
DISP=0: Standby (Default)
DISP=1: Normal display
32| HSYNC|

I

| Horizontal sync signal; negative polarity
33| VSYNC|

I

| Vertical sync signal; negative polarity
34| DE|

I

| Data input enable. Active high to enable the data input.
35| NC|

–

| No connection
36| GND|

P

| Power Ground (0V)
37| NC(XR)|

O

| NC(Right Side sense terminal)
38| NC(YD)|

O

| NC(Down Side sense terminal)
39| NC(XL)|

O

| NC(Left Side sense terminal)
40| NC(YU)|

O

| NC(Up Side sense terminal)

Note:
*1. I–Input, O–Output, P–Power/Ground

2. Absolute Maximum Ratings

GND = 0V, TOP =25°C

Items|

Symbol

| Min.| Max.|

Unit

| Condition
---|---|---|---|---|---
Supply Voltage|

VDD

| -0.3| +4.0|

V

|
Operating Temperature|

TOP

| -20| +70|

C

|
Storage Temperature|

TST

| -30| +80|

C

|
Operating Ambient Humidity|

HOP

| —| 90|

%RH

| Ta≤60℃

Cautions:
1. 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.
2. Ta means the ambient temperature.
*3. It is necessary to limit the relative humidity to the specified temperature range. Condensation on the module is not allowed.

3. Electrical Characteristics

3.1 DC Characteristics

GND=0V, VDD =3.3V, TOP =25°C

Items|

Symbol

| MIN.| TYP.| MAX.|

Unit

| Applicable Pin
---|---|---|---|---|---|---
Operating Voltage|

VDD

| 3.1| 3.3| 3.6|

V

| VDD
Input High Voltage|

VIH

| 0.7xVDD| –| VDD|

V

| Input pins
Input Low Voltage|

VIL

| GND| –| 0.3xVDD|

V

| Input pins
Operating Current|

IDD

| –| 55| –|

mA

| VDD

Note.
*1. test image is White Mode

3.2 LED Backlight Circuit Characteristics

If=20mA, TOP=25°C

Items|

Symbol

| MIN.| TYP.| MAX.|

Unit

| Note
---|---|---|---|---|---|---
Forward Voltage|

Vf

| –| 21| –|

V

| Note 1,2
Forward Current|

If

| –| 20| –|

mA

| Note 4
Backlight Power Consumption|

WBL

| –| 420| –|

mW

| For total LEDs
Life Time|

–

| 20000| 30000| –|

hr

| Note 1,2,3,4,5

Note:
1. The LED driving condition is defined for each LED module (7LED Serial,1 LED Parallel).
2. Under LCM operating, the stable forward current should be inputted. And forward voltage is for reference only.
3. Note3: Optical performance should be evaluated at Ta=25°C only. If LED is driven by high current, high ambient temperature & humidity condition, the life time of LED will be reduced. The LED Life-time define as the estimated time to 50% degradation of initial luminous under the condition of the ambient temperature of 25°C. Typical operating life time is estimated data. At the same time the luminance of Backlight would decrease under the height temperature.
4. The LED driving condition is defined for each LED module.
*5. The working current of a single LED lamp is less than 15MA, and the service life can reach 50000H

3.3 AC Characteristics

3.3.1 Clock and Date Input Timing Diagram

Timing Diagram

VDD=3.3V, GND=0V, TOP =25°C

Item|

Symbol

| Min.| Typ.| Max.|

Unit

| Conditions
---|---|---|---|---|---|---
CLK Pulse Duty|

Tcw

| 40| 50| 60|

%

|
VSYNC Setup Time|

Tvst

| 10| –| –|

ns

|
HSYNC Hold Time|

Tvhd

| 10| –| –|

ns

|
VSYNC Setup Time|

Thst

| 10| –| –|

ns

|
HSYNC Hold Time|

Thhd

| 10| –| –|

ns

|
Data Setup Time|

Tdsu

| 10| –| –|

ns

|
Data Hold Time|

Tdhd

| 10| –| –|

ns

|
DE Setup Time|

Tdest

| 10| –| –|

ns

|
DE Hold Time|

Tdehd

| 10| –| –|

ns

|

3.3.2 SYNC Mode Timing Diagram

3.3.3 DE Mode Timing Diagram

VDD=3.3V, GND=0V, TOP =25°C

Parallel 24-bit RGB Input Timing Table

Item| Symbol| Min.| Typ.| Max.| Unit|

Remark

DCLK Frequency

| Fclk| 23| 25| 27|

MHz

|
HSYNC|

Period Time

| th| 808| 816| 848|

DCLK

|

Display Period

| thdisp| 800|

DCLK

|

Back Porch

| thbp| 4| 8| 24|

DCLK

|

Front Porch

| thfp| 4| 8| 24|

DCLK

|

Pulse Width

| thw| 2| 4| 8|

DCLK

|
HSYNC|

Period Time

| Tv| 496| 512| 528|

HSYNC

|

Display Period

| Tvdisp| 480|

HSYNC

|

Back Porch

| Tvbp| 8| 16| 24|

HSYNC

|

Front Porch

| Tvfp| 8| 16| 24|

HSYNC

|

Pulse Width

| Tvw| 2| 4| 8|

HSYNC

|

Note:
1. Please refer to ST7265 data sheet for more details.
2. The minimum blanking time depends on the GIP timing of the panel specification.
3. To ensure the compatibility of different panels, it is recommended to use the typical setting.
4. It is necessary to keep Tvbp =16 and Thbp =8 in sync mode. DE mode is unnecessary to keep it.

3.3.4 Power ON Sequence

Symbol

| Description|

Time

|

Unit

---|---|---|---

T0

| System power stability to GRB RESET signal|

≥1

|

ms

T1

| GRB RESET=”High” to DISP =”High”|

≥10

|

ms

T2

| DISP =”High” to Source/GIP scan blank|

85

|

ms

T3

| IC scan blanking signal|

≥33

|

ms

T4

| Display signal|

≥100

|

ms

Note:
1. PVDD=VDD=VDDI= 3.3V.
2. When DISP pull “H” or “L”, IC will execute the internal power on or power off procedures. Please be careful about the timing of DISP and do not interrupt it during power on or power off procedure, otherwise unexpected errors will occur.
*3. RGB interface Display signal: DCLK; VSYNC; HSYNC; DE; DR[7:0]; DG[7:0]; DB[7:0].

3.3.5 Power Off Sequence

Symbol

| Description|

Time

|

Unit

---|---|---|---
T0| Backlight Power off to DISP=“Low”|

≥1

|

ms

T1| DISP=“Low” to IC internal voltage discharge complete|

≥100

|

ms

T2| DISP=“Low” to Source/GIP scan blank
(base on Display Signal Frame Rate 60Hz)|

≤50

|

ms

T3| IC internal voltage discharge is completed to VDD/VDDI/PVDD off|

≥0

|

ms

Note:
1. PVDD=VDD=VDDI= 3.3V.
2. When DISP pull “H” or “L”, IC will execute the internal power on or power off procedures .Please be careful about the timing of DISP and do not interrupt it during power on or power off procedure, otherwise unexpected errors will occur.
*3. RGB interface Display signal: DCLK; VSYNC; HSYNC; DE; DR[7:0]; DG[7:0]; DB[7:0].

4. Optical Characteristics

Item

| Symbol| Condition| Min| Typ| Max| Unit|

Remark

---|---|---|---|---|---|---|---
View Angles|

θT

| CR≥10| –| 80| –| Degree| Note 2,3
θB| –| 80|

–

θL

| –| 80| –
θR| –| 80|

–

Contrast Ratio|

CR

| θ=0°| –| 1200| –| |

Note 3

Response Time|

TR+TD

| Ta=25˚C| –| 30| –| ms|

Note 4

Chromaticity| White|

x

| θ=0°

Ta=25˚C

| 0.238| 0.288| 0.338| | Note 1,5
y| 0.254| 0.304|

0.354

Red|

x

| 0.547| 0.597| 0.647| | Note 1,5
y| 0.302| 0.352|

0.402

Green|

x

| 0.287| 0.337| 0.387| | Note 1,5
y| 0.532| 0.582|

0.632

Blue|

x

| 0.105| 0.155| 0.205| | Note 1,5
y| 0.048| 0.098|

0.148

Uniformity|

U

| | 80| –| –| %|

Note 6

NTSC| | |

–

| 50| –| %|

Note 5

Luminance|

L

| | 380| 430| –| cd/m²|

Note 7

Note:
1. If= 20 mA, and the ambient temperature is 25℃.
2. The test systems refer to Note 1 and Note 2.

Note 1: Definition of 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.

LCD Panel
The center of the screen
TFT-LCD Module
Field
Photo detector

Note 2: Definition of viewing angle range and measurement system.

viewing angle is measured at the center point of the LCD.

Normal line
θ=Φ=0°
Φ=90°
12 o’clock direction
Active Area
Φ=270°
6 o’clock direction

Note 3: Definition of contrast ratio

Contrast ratio (CR) = Luminance measured when LCD is on the “White” state / Luminance measured when LCD is on the “Black” state

(Contrast Ratio is measured in optimum common electrode voltage)

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 (TOFF) is the time between photo detector output intensity changed from 10% to 90%.

Photo detector output (Relative value)
White (TFT OFF)
Black (TFT ON)

Note 5: Definition of Color of CIE1931 Coordinate and NTSC Ratio.

Color gamut:

S= Area of RGB triangle / Area of NTSC triangle X100%

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.
Luminance Uniformity (U) = Lmin/ Lmax
L——-Active area length W—– Active area width

Fig. 2

Note 7: Definition of Luminance:

Measure the luminance of white state at center point.

5. LCD Module Design and Handling Precautions

– Please ensure V0, VCOM is adjustable, to enable LCD module get the best contrast ratio under different temperatures, view angles and positions.
– Normally display quality should be judged under the best contrast ratio within viewable area. Unexpected display pattern may come out under abnormal contrast ratio.
– Never operate the LCD module exceed the absolute maximum ratings.
– Never apply signal to the LCD module without power supply.
– Keep signal line as short as possible to reduce external noise interference.
– IC chip (e.g. TAB or COG) is sensitive to light. Strong light might cause malfunction. Light sealing structure casing is recommended.
– Make sure there is enough space (with cushion) between case and LCD panel, to prevent external force passed on to the panel; otherwise that may cause damage to the LCD and degrade its display result.
– Avoid showing a display pattern on screen for a long time (continuous ON segment).
– LCD module reliability may be reduced by temperature shock.
– When storing and operating LCD module, avoids exposure to direct sunlight, high humidity, high or low temperature. They may damage or degrade the LCD module.
– Never leave LCD module in extreme condition (max./min storage/operate temperature) for more than 48hr.
– Recommend LCD module storage conditions is 0 C~40 C <80%RH.
– LCD module should be stored in the room without acid, alkali and harmful gas.
– Avoid dropping & violent shocking during transportation, and no excessive pressure press, moisture and sunlight.
– LCD module can be easily damaged by static electricity.
Please maintain an optimum anti-static working environment to protect the LCD module. (eg. ground the soldering irons properly)
– Be sure to ground the body when handling LCD module.
– Only hold LCD module by its sides. Never hold LCD module by applying force on the heat seal or TAB.
– When soldering, control the temperature and duration avoid damaging the backlight guide or diffuser which might degrade the display result such as uneven display.
– Never let LCD module contact with corrosive liquids, which might cause damage to the backlight guide or the electric circuit of LCD module.
– Only clean LCD with a soft dry cloth, Isopropyl Alcohol or Ethyl Alcohol. Other solvents (e.g. water) may damage the LCD.
– Never add force to components of LCD module. It may cause invisible damage or degrade the module’s reliability.
– When mounting LCD module, please make sure it is free from twisting, warping and bending.
– Do not add excessive force on surface of LCD, which may cause the display color change abnormally.
– LCD panel is made with glass. Any mechanical shock (e.g. dropping from high place) will damage the LCD module.
– Protective film is attached on LCD screen. Be careful when peeling off this protective film, since static electricity may be generated.
– Polarizer on LCD gets scratched easily. If possible, do not remove LCD protective film until the last step of installation.
– When peeling off protective film from LCD, static charge may cause abnormal display pattern. The symptom is normal, and it will turn back to normal in a short while.
– LCD panel has sharp edges, please handle with care.
– Never attempt to disassemble or rework LCD module.
– If display panel is damaged and liquid crystal substance leaks out, be sure not to get any in your mouth, if the substance comes into contact with your skin or clothes promptly wash it off using soap and water.

Warranty

This product has been manufactured to our company’s specifications as a part for use in your company’s general electronic products. It is guaranteed to perform according to delivery specifications. For any other use apart from general electronic equipment, we cannot take responsibility if the product is used in medical devices, nuclear power control equipment, aerospace equipment, fire and security systems, or any other applications in which there is a direct risk to human life and where extremely high levels of reliability are required. If the product is to be used in any of the above applications, we will need to enter into a separate product liability agreement.
– We cannot accept responsibility for any defect, which may arise form additional manufacturing of the product (including disassembly and reassembly), after product delivery.
– We cannot accept responsibility for any defect, which may arise after the application of strong external force to the product.
– We cannot accept responsibility for any defect, which may arise due to the application of static electricity after the product has passed our company’s acceptance inspection procedures.
– When the product is in CCFL models, CCFL service life and brightness will vary according to the performance of the inverter used, leaks, etc. We cannot accept responsibility for product performance, reliability, or defect, which may arise.
– We cannot accept responsibility for intellectual property of a third part, which may arise through the application of our product to our assembly with exception to those issues relating directly to the structure or method of manufacturing of our product.

URL: www.topwaydisplay.com

Document Name: LMT043ENCFWA-Manual-Rev0.3.DOC

A.A.center
Peeling Tape
Components Area
Insulation Tape
Components Height
Conductor
Stiffener
PI Stiffener
Flex Area
Al-Zn alloy coated steel sheet
Uncontrolled pattern

K1 Terminal

PIN|

PIN Name

1

| VLED-

2

| VLED+

3

| GND

4

| VDD

5

| R0

:

| :

12

| R7

13

| G0

:

| :

20

| G7

21

| B0

:

| :

28

| B7

29

| GND

30

| DCLK

31

| DISP

32

| HSYNC

33

| VSYNC

34

| DE

35

| NC

36

| GND

37

| NC(XR)

38

| NC(YD)

39

| NC(XL)

40

| NC(YU)

Note:
1. LCD Display Type : TFT.Transmissive (Full View)
2. Pixel Arrangement : RGB-STRIPE
3. Interface : RGB_24bit
4. Color Depth : 16.7M color
5. Operating Voltage : 3.3V
6. Backlight Supply : 20mA (21.0V (TYP))
7. Backlight : White LED
8. Matched Connector: FH34SRJ-405-0.55H or equivalent
9. Operating Temperature : -20°C-70°C
10. Storage Temperature : -30°C-80°C