LMT043ENCFWA

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

Wangxiao

Date: 2024-01-25

Date:

Date:

Rev. Descriptions

Edit

Release Date

0.1

Preliminary New Release

Wangxiao

2023-11-9

Update 1.General Specification,1.2.Terminal Functions,3.2.LED

0.2

Backlight Circuit Characteristics,4.Optical Characteristics and the

Wangxiao

2024-01-20

Outline Dwg

0.3

Update the Outline Dwg and the View Angles in 4.Optical

Characteristics.

Wangxiao

2024-01-25

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Table of Content

1. General Specification....................................................................................................................3

1.1 Block Diagram................................................................................................................................3

1.2 Terminal Functions........................................................................................................................ 4

2. Absolute Maximum Ratings......................................................................................................... 5

3. Electrical Characteristics..............................................................................................................5

3.1 DC Characteristics.........................................................................................................................5

3.2 LED Backlight Circuit Characteristics............................................................................................5

3.3 AC Characteristics......................................................................................................................... 6

4. Optical Characteristics................................................................................................................10

5. LCD Module Design and Handling Precautions.......................................................................12

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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

VLED-, VLED+

Backlight Circuit

800(x3) x 480 pixels

TFT Panel

R0~R7, G0~G7, B0~B7

TFT Driver

VDD, GND

ST7265 or equivalent

DCLK, HSYNC, VSYNC, DE,DISP

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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

Display control / standby mode selection.

31

DISP

I

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

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2. Absolute Maximum Ratings

GND = 0V,T OP =25  C

Items

Symbol

Min.

Max.

Unit

Condition

Supply Voltage

V DD

-0.3

+4.0

V

Operating Temperature

T OP

-20

+70

 C

Storage Temperature

T ST

-30

+80

 C

Operating Ambient

Humidity

H OP

--

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, V DD =3.3V, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Applicable Pin

Operating Voltage

V DD

3.1

3.3

3.6

V

VDD

Input High Voltage

V IH

0.7xVDD

-

VDD

V

Input pins

Input Low Voltage

V IL

GND

-

0.3xVDD

V

Input pins

Operating Current

I DD

-

55

-

mA

VDD

Note.

*1. test image is White Mode

3.2 LED Backlight Circuit Characteristics

I f =20mA, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Note

Forward Voltage

V f

-

21

-

V

Note 1,2

Forward Current

I f

-

20

-

mA

Note 4

Backlight Power

Consumptiom

W BL

-

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 ℃ 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 ℃ . Typical operating life time is

estimated data.At the same time the luminance of Backlight would decrease under the hight 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

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3.3 AC Characteristics

3.3.1 Clock and Date Input Timing Diagram

Timing Diagram

VDD=3.3V, GND=0V,T OP =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

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3.3.2 SYNC Mode Timing Diagram

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3.3.3 DE Mode Timing Diagram

VDD=3.3V, GND=0V,T OP =25  C

Parallel 24-bit RGB Input Timing Table

Item

Symbol

Min.

Typ.

Max.

Unit

Remark

DCLK Frequency

Fclk

23

25

27

MHz

Period Time

th

808

816

848

DCLK

Display Period thdisp

800

DCLK

HSYNC

Back Porch

thbp

4

8

24

DCLK

Front Porch

thfp

4

8

24

DCLK

Pulse Width

thw

2

4

8

DCLK

Period Time

Tv

496

512

528

HSYNC

Display Period Tvdisp

480

HSYNC

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.

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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

≤ 50

ms

(base on Display Signal Frame Rate 60Hz)

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].

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4. Optical Characteristics

Item

Symbol Condition

Min

Typ

Max

Unit

Remark

θT

-

80

-

View Angles

θB

CR≥10

-

80

-

θL

-

80

-

Degree

Note2,3

θR

-

80

-

Contrast Ratio

CR

θ=0 °

-

1200

-

Note 3

Response Time

T R +T D

Ta=25 ˚ C

-

30

-

ms

Note 4

x

0.238

0.288

0.338

White

Note 1,5

y

0.254

0.304

0.354

x

0.547

0.597

0.647

Red

Note 1,5

Chromaticity

θ=0 °

y

0.302

0.352

0.402

x

Ta=25 ˚ C

0.287

0.337

0.387

Green

Note 1,5

y

0.532

0.582

0.632

x

0.105

0.155

0.205

Blue

y

0.048

0.098

0.148

Note 1,5

Uniformity

U

80

-

-

%

Note 6

NTSC

-

50

-

%

Note 5

Luminance

L

380

430

-

cd/ ㎡

Note 7

Note:

*1. I f = 20 mA, and the ambient temperature is 25 ℃ .

*2. The test systems refer to Note 1 and Note 2.

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Note 1:Definition of optical measurement system.

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

The optical characteristics should be measured in dark room.

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

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 3:Definition of contrast ratio

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

(Contrast Ratio is measured in optimum common electrode

the time between photo detector output intensity changed from 90%

voltage)

to 10%. And fall time (TOFF) is the time between photo detector

output intensity changed from 10% to 90%.

Note 5:Definition of Color of CIE1931 Coordinate and NTSC

Note 6:Definition of Luminance Uniformity

Ratio.

Active area is divided into 9 measuring areas (Refer Fig. 2). Every

Color gamut:

measuring point is placed at the

Area of RGB triangle

center of each measuring area.

S=

X100%

Area of NTSC triangle

Luminance Uniformity (U) = Lmin/ Lmax

L-------Active area length W----- Active area width

Note 7:Definition of Luminance:

Measure the luminance of white state at center point.

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5. LCD Module Design and Handling

5. 液晶显示模块设计和使用须知

Precautions

- Please ensure V0, VCOM is adjustable, to enable LCD - 请注意 V0, VCOM 的设定, 以确保液晶显示模块在不

module get the best contrast ratio under different

同的使用温度下以及在不同的视角和位置观察模块显

temperatures, view angles and positions.

示，均能达到最佳对比度，请务必将应用电路上设置

为对比度可调。

- Normally display quality should be judged under the - 请注意液晶显示模块的显示品质判定是指在正常对比

best contrast ratio within viewable area. Unexpected

度下以及视窗(V.A)范围内进行的，非正常对比度下

display pattern may come out under abnormal contrast

液晶可能会出现非预期的显示不良，应注意区分。

ratio.

- Never operate the LCD module exceed the absolute - 请勿在最大额定值以外使用液晶显示模块。

maximum ratings.

- Never apply signal to the LCD module without power - 请勿在没有接通电源的条件下，给液晶显示模块输送

supply.

信号。

- Keep signal line as short as possible to reduce external - 请尽可能缩短信号线的连接，以避免对液晶显示模块

noise interference.

的信号干扰。

- IC chip (e.g. TAB or COG) is sensitive to light. Strong - 集成电路因 IC 芯片(如 TAB 或 COG)对紫外线极为敏

light might cause malfunction. Light sealing structure

感，强光环境下可能会引起液晶显示模块功能失效，

casing is recommended.

故应采用不透光的外壳。

- Make sure there is enough space (with cushion) - 请在液晶显示模块与外壳之间保留足够的空间(可使

between case and LCD panel, to prevent external force

用衬垫)，以缓冲外力对液晶显示模块的损坏或因受

passed on to the panel; otherwise that may cause

力不均而产生的显示不匀等异常现象。

damage to the LCD and degrade its display result.

- Avoid showing a display pattern on screen for a long - 避免液晶显示屏在某一画面下长时间点亮，否则有出

time (continuous ON segment).

现残影的风险；请通过软件每隔一段时间改变一次画

面。

- LCD module reliability may be reduced by temperature - 液晶显示模块的可靠性可能因温度冲击而降低。

shock.

- When storing and operating LCD module, avoids - 请勿在阳光直射、高湿、高温或低温下储存和使用液

exposure to direct sunlight, high humidity, high or low

晶显示模块，这将造成液晶显示模块的损坏或失效。

temperature. They may damage or degrade the LCD

module.

- Never leave LCD module in extreme condition - 请勿在极限环境(最大/最小存储/工作温度)下使用或

(max./min storage/operate temperature) for more than

放置液晶显示模块超过 48 小时以上。

48hr.

- Recommend LCD module storage conditions is - 液晶显示模块建议存储条件为: 0 C~40 C <80%RH 。

0 C~40 C <80%RH.

- LCD module should be stored in the room without acid, - 请勿让液晶显示模块存储于带有 酸性, 碱性, 有害

alkali and harmful gas.

气体环境之中。

- Avoid dropping & violent shocking during transportation, - 在运输过程中, 请勿让液晶显示模块跌落与猛烈震

and no excessive pressure press, moisture and sunlight.

动, 同时避免 异常挤压, 高湿度, 与阳光照射.

- LCD module can be easily damaged by static electricity. - 液晶显示模块极易受静电损坏，请务必保证液晶显示

Please maintain an optimum anti-static working

模块在防静电的工作环境中使用或保存。(如: 烙铁

environment to protect the LCD module. (eg. ground the

正确接地,等)

soldering irons properly)

- Be sure to ground the body when handling LCD module. - 拿取液晶显示模块时需注意操作人员的接地情况。

- Only hold LCD module by its sides. Never hold LCD - 请手持液晶显示模块的边沿取放模块，防止热压纸或

module by applying force on the heat seal or TAB.

TAB 部位受力。

- When soldering, control the temperature and duration - 焊接液晶模块时，请注意控制烙铁的温度、焊接时

avoid damaging the backlight guide or diffuser which

间，以免烫坏导光板或偏光片，导致显示不匀等不良

might degrade the display result such as uneven

现象发生。

display.

- Never let LCD module contact with corrosive liquids, - 请勿使用洗板水等腐蚀性液体接触液晶模块，以免腐

which might cause damage to the backlight guide or the

蚀导光板或模块电路。

electric circuit of LCD module.

- Only clean LCD with a soft dry cloth, Isopropyl Alcohol - 仅可使用柔软的干布, 异丙醇或乙醇清洁液晶屏表

or Ethyl Alcohol. Other solvents (e.g. water) may

面，其他任何溶剂(如:水)都有可能损坏液晶模块。

damage the LCD.

- Never add force to components of LCD module. It may - 请勿挤压液晶显示模块上的元器件，以避免产生潜在

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cause invisible damage or degrade the module's

的损坏或失效而影响产品可靠性。

reliability.

- When mounting LCD module, please make sure it is - 装配液晶显示模块时，请务必注意避免液晶显示模块

free from twisting, warping and bending.

的扭曲或变形。

- Do not add excessive force on surface of LCD, which - 请勿挤压液晶显示屏表面，这将导致显示颜色的异

may cause the display color change abnormally.

常。

- LCD panel is made with glass. Any mechanical shock - 液晶屏由玻璃制作而成，任何机械碰撞(如从高处跌

(e.g. dropping from high place) will damage the LCD

落)均有可能损坏液晶显示模块。

module.

- Protective film is attached on LCD screen. Be careful - 液晶屏表面带有保护膜, 揭除保护膜时需要注意可能

when peeling off this protective film, since static

产生的静电。

electricity may be generated.

- Polarizer on LCD gets scratched easily. If possible, do - 因液晶显示屏表面的偏光片极易划伤，安装完成之前

not remove LCD protective film until the last step of

请尽量不要揭下保护膜。

installation.

- When peeling off protective film from LCD, static charge - 请缓慢揭除保护膜，在此过程中液晶显示屏上可能会

may cause abnormal display pattern. The symptom is

产生静电线，此为正常情况，可在短时间内消失。

normal, and it will turn back to normal in a short while.

- LCD panel has sharp edges, please handle with care.

- 请注意避免被液晶显示屏的边缘割伤。

- Never attempt to disassemble or rework LCD module.

- 请不要试图拆卸或改造液晶显示模块。

- If display panel is damaged and liquid crystal substance - 当液晶显示屏出现破裂, 内部液晶液体可能流出; 相

leaks out, be sure not to get any in your mouth, if the

关液体不可吞吃, 绝对不可接触嘴巴, 如接触到皮肤

substance comes into contact with your skin or clothes

或衣服, 请使用肥皂与清水彻底清洗.

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.

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