LMT018DNBFWD-2

1161

LMT018DNBFWD-2

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

wangxikuan

Date: 2020-06-09

Date:

Rev. Descriptions

Release Date

0.1

Preliminary New release

2020-06-09

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Table of Content

1. Basic Specifications ...................................................................................................................3

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

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

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

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

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

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

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

4. Optical Characteristics ............................................................................................................7

5. Functions .................................................................................................................................9

Display Commands.................................................................................................................................................................9

Power off the LCD Module....................................................................................................................................................11

Refreshing The LCD Module.................................................................................................................................................11

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

7. CTP Mounting Instructions ....................................................................................................13

8. RTP Mounting Instructions ....................................................................................................14

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1. Basic Specifications

Screen Size(Diagonal) :

1.8”

Color Depth:

65k / 262k color

Number of dots :

128(RGB) x 160

Active Area :

28.03x35.04 mm

Dot Pitch :

0.219x0.219 mm

Display Technology :

a-Si TFT active matrix

Display Mode :

Transmissive / Positive

Pixel Configuration :

RGB Stripe

Viewing Direction :

12H (*1) (gray scale inverse)

6H (*2)

Polarizer Surface Treatment:

Glare

Backlight Type:

LEDs

Outline Dimension :

34.0 x 43.78 x 2.6 mm

(exclude FPC , see dwg for details)

Operating Temperature :

-20 ~ +70°C (No Condensation)

Storage Temperature :

-30 ~ +80°C (No Condensation)

Note:

*1. For saturated color display content (eg. pure-red, pure-green, pure-blue or pure-colors-combinations).

*2. For “color scales” display content.

*3. Color tone may slightly change by temperature and driving condition.

Block Diagram

BLA, BLK

Backlight Circuit

TFT Panel

128(RGB)×160

VDD

VSS

ST7735S or equivalent

/CS, /RST, D/C,SDA,SCL

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Terminal Functions

No.

Name

I/O

Descriptions

VSS

Power

Negative power supply,0V

VDD

Power

Positive power supply

SCL

Input

Serial interface clock pin

Reset signal

/RST

Input

/RESET = L, Initialization is executed

/RESET = H, Normal running.

Chip Select

/CS

Input

/CS=L, enable access to the LCD module

/CS=H, disable access to the LCD module

SDA

I/O

Serial input/output signal pin

D/C

Input

D/C = H, Transferring the Display Data

D/C = L, Transferring the Control Data

BLK

Power

Negative power for LED backlight

BLA

Power

Positive power for LED backlight

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2. Absolute Maximum Ratings

Items

Symbol

Min.

Max.

Unit Condition

Supply Voltage

V DD

-0.3

+4.6

V SS = 0V

Input Voltage

V IN

-0.3

+4.6

V SS = 0V

Operating Temperature

T OP

-20

+70

 C

No Condensation

Storage Temperature

T ST

-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.

3. Electrical Characteristics

DC Characteristics

V SS =0V, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Condition /

Application Pin

Operating Voltage

V DD

2.6

2.8

3.6

VDD

Input High Voltage

V IH

0.8xV DD

V DD

/RST, /CS, D/C,

Input Low Voltage

V IL

V SS

0.2xV DD

SDA,SCL

Operating Current

I DD

TBD

mA VDD (*1)

LED Backlight Circuit Characteristics

BLK=0V, I BLA =30mA, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit

Applicable Pin

Forward Voltage

Vf BLA

3.2

BLA

Forward Current

I BLA

BLA

LED lifetime

20000

Hours

Cautions:

Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.

BLA

BLK

No. of LEDs = 2pcs

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AC Characteristics

4-SPI Mode Timing

V SS =0V ,V DD =2.8V , T OP =25  C

Note:

*1. Input signal rise/fall time should be less than 15ns .

*2. All timing is using 20% and 80% of VDD as the reference.

*3. Please refer to ST7735S datasheet for details

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Reset Timing

Item

Symbol

MIN.

TYP.

MAX.

Unit

Reset LOW pulse width

t RW

Reset time

T RT

120

4. Optical Characteristics

Item

Symbol

Min.

Typ.

Max.

Unit

Note/ Condition

θ T

θ B

View Angles

θ L

Degree CR≥10 (*1, *3)

θ R

Contrast Ratio

300

500

θ=0° (*4)

Response Time

T ON

T OFF

25 ℃ (*5)

white

0.226

0.276

0.326

0.252

0.302

0.352

red

TBD

Chromaticity

Backlight is on (*6)

green

TBD

blue

TBD

Uniformity

θ =0°, Φ =0° (*1,*2)

NTSC

θ =0°, Φ =0° (*1, *6)

Luminance

150

180

cd/m 2

θ =0°, Φ =0° (*1,*2)

Test Conditions:

1. I F = 30mA, and the ambient temperature is 25 ℃ .

Note:

*1. Measurement

The data are measured after LEDs are turned on for 5 minutes. LCM

displays full white. The brightness is the average value of 9 measured

spots.

Measurement equipment PR-705 (Φ8mm)

Measuring condition:

- Measuring surroundings: Dark room.

- Measuring temperature: Ta=25 ℃ .

- Adjust operating voltage to get optimum contrast at the center of the display.

Measured value at the center point of LCD panel after more than 5 minutes while backlight turning on.

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*2. The luminance uniformity

It is calculated by using following formula.

△ Bp = Bp (Min.) / Bp (Max.)×100 (%)

L 2

Bp (Max.) = Maximum brightness in 9 measured spots

Bp (Min.) = Minimum brightness in 9 measured spots.

L 3

Measurement equipment PR-705 (Φ8mm)

L 3

*3. The definition of viewing angle:

Refer to the graph below marked by θ and Ф

*4. The definition of contrast ratio (Test LCM using PR-705):

Contrast Ratio(CR)=

Luminance When LCD is at “White” state

Luminance When LCD is at “Black” state

(Contrast Ratio is measured in optimum common electrode voltage)

*5. Definition of Response time.(Test LCD using DMS501):

The output signals of photo detector are measured when the input signals are changed

from “black” to “white”(falling time) and from “white” to “black”(rising time), respectively.

The response time is defined as the time interval between the 10% and 90% of

amplitudes. Refer to figure as below.

*6: Definition of Color of CIE Coordinate and

NTSC Ratio.

area of RGB triangle

x100%

area of NTSC triangle

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5. Functions

Display Commands

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Notes:

1. There will be no abnormal visible effects on the display when S/W or H/W Reset are applied.

2. After Powered-On Reset finishes within 10 % s after both VDD & VDDI are applied.

3. Mode 1 means Tearing Effect Output Line consists of V-Blanking Information only.

4. Please refer to ST7735S datasheet for details

Power off the LCD Module

It recommends that enter Sleep Mode before power off the LCD module.

Refreshing The LCD Module

It recommends that the operating modes and display contents be refreshed periodically to prevent

the effect of unexpected noise.

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LCD Module Design and Handling Precautions

6. 液晶显示模块设计和使用须知

- Please ensure V0, VCOM is adjustable, to enable LCD module get

- 请注意 V0, VCOM 的设定, 以确保液晶显示模块在不同

the best contrast ratio under different temperatures, view angles

的使用温度下以及在不同的视角和位置观察模块显

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 best contrast

- 请注意液晶显示模块的显示品质判定是指在正常对比

ratio within viewable area. Unexpected display pattern may com out

度下以及视窗(V.A)范围内进行的，非正常对比度下液

under abnormal contrast ratio.

晶可能会出现非预期的显示不良，应注意区分。

- Never operate the LCD module exceed the absolute maximum

请勿在最大额定值以外使用液晶显示模块。

ratings.

- Never apply signal to the LCD module without power supply.

请勿在没有接通电源的条件下，给液晶显示模块输送

信号。

- Keep signal line as short as possible to reduce external noise

请尽可能缩短信号线的连接，以避免对液晶显示模块

interference.

的信号干扰。

- IC chip (e.g. TAB or COG) is sensitive to light. Strong light might

- 集成电路因 IC 芯片(如 TAB 或 COG)对紫外线极为敏

cause malfunction. Light sealing structure casing is recommended.

感，强光环境下可能会引起液晶显示模块功能失效，

故应采用不透光的外壳。

- Make sure there is enough space (with cushion) between case and

- 请在液晶显示模块与外壳之间保留足够的空间(可使用

LCD panel, to prevent external force passed on to the panel;

衬垫)，以缓冲外力对液晶显示模块的损坏或因受力不

otherwise that may cause damage to the LCD and degrade its

均而产生的显示不匀等异常现象。

display result.

- Avoid showing a display pattern on screen for a long time

避免液晶显示屏在某一画面下长时间点亮，否则有出

(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 shock.

液晶显示模块的可靠性可能因温度冲击而降低。

- When storing and operating LCD module, avoids exposure to direct

请勿在阳光直射、高湿、高温或低温下储存和使用液

sunlight, high humidity, high or low temperature. They may damage

晶显示模块，这将造成液晶显示模块的损坏或失效。

or degrade the LCD module.

- Never leave LCD module in extreme condition (max./min

- 请勿在极限环境(最大/最小存储/工作温度)下使用或

storage/operate temperature) for more than 48hr.

放置液晶显示模块超过 48 小时以上。

- Recommend LCD module storage conditions is 0 C~40 C

- 液晶显示模块建议存储条件为: 0 C~40 C <80%RH 。

<80%RH.

- 请勿让液晶显示模块存储于带有酸性, 碱性, 有害气

- LCD module should be stored in the room without acid, alkali and

体环境之中。

harmful gas.

- 在运输过程中, 请勿让液晶显示模块跌落与猛烈震动,

- Avoid dropping & violent shocking during transportation, and no

同时避免异常挤压, 高湿度, 与阳光照射.

excessive pressure press, moisture and sunlight.

- 液晶显示模块极易受静电损坏，请务必保证液晶显示

- LCD module can be easily damaged by static electricity. Please

模块在防静电的工作环境中使用或保存。(如: 烙铁正

maintain an optimum anti-static working environment to protect the

确接地,等)

LCD module. (eg. ground the soldering irons properly)

拿取液晶显示模块时需注意操作人员的接地情况。

- Be sure to ground the body when handling LCD module.

- 请手持液晶显示模块的边沿取放模块，防止热压纸或

- Only hold LCD module by its sides. Never hold LCD module by

TAB 部位受力。

applying force on the heat seal or TAB.

焊接液晶模块时，请注意控制烙铁的温度、焊接时

- When soldering, control the temperature and duration avoid

间，以免烫坏导光板或偏光片，导致显示不匀等不良

damaging the backlight guide or diffuser which might degrade the

现象发生。

display result such as uneven display.

请勿使用洗板水等腐蚀性液体接触液晶模块，以免腐

- Never let LCD module contact with corrosive liquids, which might

蚀导光板或模块电路。

cause damage to the backlight guide or the electric circuit of LCD

module.

- 仅可使用柔软的干布, 异丙醇或乙醇清洁液晶屏表

- Only clean LCD with a soft dry cloth, Isopropyl Alcohol or Ethyl

面，其他任何溶剂(如:水)都有可能损坏液晶模块。

Alcohol. Other solvents (e.g. water) may damage the LCD.

请勿挤压液晶显示模块上的元器件，以避免产生潜在

- Never add force to components of LCD module. It may cause

的损坏或失效而影响产品可靠性。

invisible damage or degrade the module's reliability.

装配液晶显示模块时，请务必注意避免液晶显示模块

- When mounting LCD module, please make sure it is free from

的扭曲或变形。

twisting, warping and bending.

请勿挤压液晶显示屏表面，这将导致显示颜色的异

- Do not add excessive force on surface of LCD, which may cause

常。

the display color change abnormally.

- 液晶屏由玻璃制作而成，任何机械碰撞(如从高处跌

- LCD panel is made with glass. Any mechanical shock (e.g.

落)均有可能损坏液晶显示模块。

dropping from high place) will damage the LCD module.

- Protective film is attached on LCD screen. Be careful when peeling

- 液晶屏表面带有保护膜, 揭除保护膜时需要注意可能

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off this protective film, since static electricity may be generated.

产生的静电。

- Polarizer on LCD gets scratched easily. If possible, do not remove

因液晶显示屏表面的偏光片极易划伤，安装完成之前

LCD protective film until the last step of installation.

请尽量不要揭下保护膜。

- When peeling off protective film from LCD, static charge may cause

请缓慢揭除保护膜，在此过程中液晶显示屏上可能会

abnormal display pattern. The symptom is normal, and it will turn

产生静电线，此为正常情况，可在短时间内消失。

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 leaks out,

- 当液晶显示屏出现破裂, 内部液晶液体可能流出; 相

be sure not to get any in your mouth, if the substance comes into

关液体不可吞吃, 绝对不可接触嘴巴, 如接触到皮肤

contact with your skin or clothes promptly wash it off using soap

或衣服, 请使用肥皂与清水彻底清洗.

and water.

CTP Mounting Instructions

7. 电容触摸屏安装指导

7.1 Bezel Mounting (Figure 1)

7.1 面框安装（附图 1）

- The bezel window should be bigger than the CTP active area. It

- 客户面框窗口应大于 CTP 动作区域，各边离动作区应

should be ≥ 0.5mm each side.

≥0.5mm.

- Gasket should be installed between the bezel and the CTP surface.

- 面框与 CTP 面板间应垫有胶垫，其最终间隙约为 0.5～

1.0mm.

The final gap should be about 0.5~1.0mm.

- 建议必要时在背面提供附加支架(例如无安装结构的薄

- It is recommended to provide an additional support bracket for

型 TFT 模块)，应仅利用适当支撑以保持模块位置.

backside support when necessary (e.g. slim type TFT module

without mounding structure). They should only provide appropriate

support and keep the module in place.

- 安装结构应具有足够的强度，以防止外部不均匀力或

- The mounting structure should be strong enough to prevent

扭曲力作用到模块上.

external uneven force or twist act onto the module.

Figure 1

7.2 Surface Mounting (Figure 2)

7.2 嵌入安装（附图 2）

- As the CTP assembling on the countersink area with double side

- 客户面框应具有使用双面胶粘贴 CTP 的结构沉台面，

adhesive.

其粘贴面要求平整且洁净无污以保证粘贴牢靠.

The countersink area should be flat and clean to ensure the double

side adhesive installation result.

- The Bezel is recommend to keep a gap ( ≥ 0.3mm each side)

- 考虑到制作误差，建议面框与 CTP 盖板之间四周留有

around the cover lens for tolerance.

≥0.3mm 间隙.

- It is recommended to provide an additional support bracket with

- 建议必要时在背面提供垫有胶垫附加支架(例如无安装

gasket for backside support when necessary (e.g. TFT module

结构的 TFT 模块)，应仅利用适当支撑以保持模块位

without mounding structure). They should only provide appropriate

置.

support and keep the module in place.

- The mounting structure should be strong enough to prevent

安装结构应具有足够的强度，以防止外部不均匀力或

external uneven force or twist act onto the module

扭曲力作用到模块上。

Figure 2

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7.3 Additional Cover Lens Mounting (Figure 3)

7.3 覆加盖板（附图 3）

- For the case of additional cover Lens mounting, it is necessary to

- 需要覆加玻璃盖板的安装，为确保其功能，有必要查

recheck with the CTP specification about the material and thickness

看产品规格书中有关盖板材料和厚度的说明.

to ensure the functionality.

- It should keep a 0.2~0.3mm gap between the cover lens and the

- 玻璃盖板与 CTP 表面之间应留有 0.2～0.3mm 间隙.

CTP surface..

- The cover lens window should be bigger than the active area of the

- 玻璃盖板视窗应大于 CTP 动作区域，各边离动作区应

CTP.It should be ≥ 0.5mm each side.

≥0.5mm。

- It is recommended to provide an additional support bracket for

- 建议必要时在背面提供附加支架(例如无安装结构的薄

backside support when necessary (e.g. slim type TFT module

型 TFT 模块)，应仅利用适当支撑以保持模块位置.

without mounding structure). They should only provide appropriate

support and keep the module in place.

- The mounting structure should be strong enough to prevent

- 安装结构应具有足够的强度，以防止外部不均匀力或

external uneven force or twist act onto the module.

扭曲力作用到模块上.

Figure 3

RTP Mounting Instructions

8. 电阻触摸屏安装指导

- It should bezel touching the RTP Active Area (A.A.) to prevent

- 为避免面框直接压在动作区(A.A.)上造成误动作，面框

abnormal touch.It should left gab D=0.2~0.3mm in between.

与电阻触摸屏(RTP)之间应留有一定的空隙

(Figure 4)

D=0.2~0.3mm 之间.(附图 4)

- Outer bezel design should take care about the area outside the

- 设计面框时，要注意用面框保护触摸屏四周的非保证操

A.A. Those areas contain circuit wires which is having different

作区域，因为布线区域在此处形成一台阶，在此区域

thickness. Touching those areas could de-form the ITO film. As a

附近操作时 ITO Film 变形较大，容易导致 ITO 损坏而

result bezel the ITO film be damaged and shorten its lifetime.

降低寿命。为保护 RTP 和避免误操作，在 RTP 与面框之

It is suggested to protect those areas with gasket (between the

间垫缓冲物（Gasket），我们建议设计面框应覆盖动

bezel and RTP).The suggested figures are B ≥ 0.50mm; C ≥ 0.50mm.

作区的边缘，面框边缘到 V.A.区的距离 B≥0.50mm;

(Figure 4)

垫圈内边缘到 V.A.区的距离 C≥0.50mm. (附图 4)

- The bezel side wall should keep space E= 0.2 ~ 0.3mm from the

- 在设计面框与 RTP 组装时，应考虑到面框内侧与 RTP 外

RTP. (Figure 4)

侧的间距 E≥0.2mm. (附图 4)

Figure 4

- In general design,

- 通常设计时：

RTP V.A. should be bigger than the TFT V.A.

RTP 的可视区 V.A. 应不小于 TFT 的可视区 V.A.

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and RTP A.A. should be bigger than the TFT A.A.

及 RTP 的动作区 A.A. 应不小于 TFT 的动作区 A.A.

(Figure 5)

(附图 5)

Figure 5

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: LMT018DNBFWD-2-Manual-Rev0.1(w_dwg).DOC

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