LMT043DEFFWA-NND-2
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Li KeKe
Date: 2020-08-25
Date:
Date:
Rev. Descriptions
Release Date
0.1
Preliminary
2020-08-25
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Table of Content
1. General Specification ............................................................................................................................... 3
2. Block Diagram ............................................................................................................................................ 3
3. Terminal Functions ................................................................................................................................... 4
3.1 K1 Interface ............................................................................................................................................... 4
3.2 K2 Interface ............................................................................................................................................... 4
3.3 K2 I2C Interface Descriptions ................................................................................................................. 5
4. Absolute Maximum Ratings .................................................................................................................... 5
5. Electrical Characteristics(CTP) .............................................................................................................. 6
5.1 DC Characteristics (CTP) ......................................................................................................................... 6
6. Electrical Characteristics(TFT) .............................................................................................................. 6
6.1 DC Characteristics (MCU terminal) ........................................................................................................ 6
6.2 LED Backlight Circuit Characteristics ..................................................................................................... 6
6.3 AC Characteristics ..................................................................................................................................... 7
6.3.1 Clock and Date Input Timing Diagram ...................................................................................... 7
6.3.2 SYNC Mode Timing Diagram ....................................................................................................... 8
6.3.3 DE Mode Timing Diagram ............................................................................................................. 8
6.3.4 SYNC-DE Mode Timing Diagram ................................................................................................ 9
6.3.5 RGB Input Timing Table ............................................................................................................ 9
6.3.6 Power ON Sequence ................................................................................................................... 10
6.3.7 Power Off Sequence ................................................................................................................... 11
7. Optical Characteristics ......................................................................................................................... 12
8. LCD Module Design and Handling Precautions .............................................................................. 14
9. CTP Mounting Instructions ................................................................................................................... 15
10. RTP Mounting Instructions ................................................................................................................. 16
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1. General Specification
Screen Size(Diagonal) :
4.3 inch
Resolution :
480(RGB) x 272
Signal Interface :
RGB_24bits
Color Depth :
16.7M color (24bit) *1
Dot Pitch :
0.198 x 0.198 (mm)
Pixel Configuration :
Vertical Stripe
Display Mode :
Transmissive / Positive (normal white)
Surface Treatment :
Anti-Glare Treatment
Viewing Direction :
Full View
Outline Dimension :
105.5 x 67.2 x 4.5 (mm)
(exclude FPC, see attached drawing for details)
Active Area :
95.04 x 53.86 (mm)
Backlight :
2x5 LEDs
Driver IC
ILI6485
Operating Temperature :
-20 ~ +70°C
Storage Temperature :
-30 ~ +80°C
Note:
*1 Color tune may slightly changed by temperature and driving voltage.
*2 For saturated color display content (eg. pure-red, pure-green, pure-blue or pure-colors-combinations).
*3 For ”color scales” display content.
2. Block Diagram
VDD ， GND ， INT ， RST ， SCL ， SDA
CTP FT5446DQS or equivalent
VLED-, VLED+
Backlight Circuit
480(x3) x 272 pixels
TFT Panel
R0~R7, G0~G7, B0~B7
TFT Driver
VDD, GND
ILI6485 or equivalent
DCLK, HSYNC, VSYNC, DE,DISP
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3. Terminal Functions
3.1 K1 Interface
Pin Pin
No. 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
:
:
Red color data input
12
R7
13
G0
I
:
:
Green color data input
20
G7
21
B0
I
:
:
Blue color data input
28
B7
29
GND
P
Power Ground (0V)
30
DCLK
I
Data clock signal input, rising edge trigger
Display on/of control (internally pull low)
31
DISP
I
DISP=0: standby mode
DISP=1: normal operation
32
HSYNC
I
Horizontal Sync signal input, active low
(If not using, pull high)
33
VSYNC
I
Vertical Sync Signal Input, active low
(If not using, pull high)
34
DE
I
Data Enable Signal Input, active high
(If not using, pull low)
35
NC
-
No connection, leave open
36
GND
P
Power Ground (0V)
37
NC
38
NC
39
NC
-
No connection, leave open
40
NC
Note:
The LMT043DEFFWA-NND both supports DE mode and Sync mode timing.SYNC mode, DE pull-lo, HSYNC and
VSYNC for timing control,DE mode, HSYNC and VSYNC pull-hi, DE for timing control
3.2 K2 Interface
Pin Pin
No. Name
I/O
Descriptions
1
GND
P
Power Ground (0V)
2
INT
I
Interrupt Signal
3
NC
-
-
4
RST
I
Reset Signal
5
NC
-
-
6
SDA
I
Serial Input Data
7
NC
-
-
8
SCL
I
Serial Input Clock
9
VDD
P
Positive Power Supply
10
GND
P
Power Ground (0V)
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3.3 K2 I2C Interface Descriptions
I2C Timing Diagram
VCC =3.3V, GND=0V,T OP =25 C
Explain:
This touch screen using chip FT5446DQS, About, absolute maximum ratings, electrical characteristics,
clock and date input timing diagram, chip FT5446DQS command descriptions, Please reference chip
FT5446DQS material document .
4. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit
Condition
Supply Voltage(TFT)
V DD
-0.30
+4.00
V
GND = 0V
Supply Voltage(CTP)
V cc
2.66
+3.47
V
GND = 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.
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5. Electrical Characteristics(CTP)
5.1 DC Characteristics (CTP)
VCC = 2.8V, IOVCC=1.8V, T OP =25 C
Items
Symbol
MIN.
TYP.
MAX.
Unit Applicable Pin
Operating Voltage
V CC
2.7
-
3.6
V
VCC
Input High Voltage
V IH
0.7xIOVCC
1.8
IOVCC+0.3
V
Input pins
Input Low Voltage
V IL
-0.3
0
0.3xIOVCC
V
Input pins
Current consumption
I opr
12
12.24
15
mA
VCC
Monitor mode
I mon
0.5
0.54
1.1
mA
VCC
Sleep Current
I s
10
42
70
uA
VCC
6. Electrical Characteristics(TFT)
6.1 DC Characteristics (MCU terminal)
GND=0V, V DD =3.3V, T OP =25 C
Items
Symbol
MIN.
TYP.
MAX.
Unit Applicable Pin
Operating Voltage
V DD
3.0
3.3
3.6
V
VDD
Input High Voltage
V IH
0.7VDD
-
VDD
V
Input pins
Input Low Voltage
V IL
GND
-
0.3VDD
V
Input pins
Frame Freq
F FRAME
-
60
-
Hz
Dot Data Clock
f DOTCLK
-
9.0
15
MHz
Operating Current (*1)
I DD
-
21.0
-
mA
VDD
Standby Current (*2)
I DD
-
15.2
-
uA
VDD
Note.
*1. test image is Black Mode, Frame Freq=60Hz
*2. DISP=0
6.2 LED Backlight Circuit Characteristics
If VLED+ =40mA, T OP =25 C
Items
Symbol
MIN.
TYP.
MAX.
Unit Note
Forward Voltage
Vf
-
16.0
-
V
Forward Current
If VLED+
-
40
50
mA
Life Time
-
10,000
(20,000)
-
hr
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
VLED+
VLED-
No. of LEDs = 2x5 pcs
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6.3 AC Characteristics
6.3.1 Clock and Date Input Timing Diagram
Timing Diagram
VDDI =3.3V, VDD=3.3V, AGND=0V,T OP =25 C
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6.3.2 SYNC Mode Timing Diagram
6.3.3 DE Mode Timing Diagram
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6.3.4 SYNC-DE Mode Timing Diagram
6.3.5 RGB Input Timing Table
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6.3.6 Power ON Sequence
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6.3.7 Power Off Sequence
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7. Optical Characteristics
Item
Symbol Condition
Min
Typ
Max
Unit
Remark
θT
70
80
-
View Angles
θB
CR ≧ 10
70
80
-
Degree Note2,3
θL
70
80
-
θR
70
80
-
Contrast Ratio
CR
θ = 0 °
600
800
-
Note 3
T ON
Response Time
25 ℃
-
20
30
ms
Note 4
T OFF
x
-
0.303
-
White
Note 1,5
y
-
0.320
-
x
-
0.588
-
Red
Note 1,5
Chromaticity
Backlight is
y
-
0.354
-
x
on
-
0.338
-
Green
Note 1,5
y
-
0.583
-
x
-
0.152
-
Blue
Note 1,5
y
-
0.092
-
Uniformity
U
75
80
-
%
Note 6
NTSC
45
50
-
%
Note 5
Luminance
L
350
400
-
cd/ ㎡ Note 7
Test Conditions:
1.I F = 40 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.
The definition of viewing angle:
After 5 Minutes operation, the optical
Refer to the graph below marked by θ and Ф
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.
- Measuring surroundings: Dark room
- Measuring temperature: Ta=25 ℃ .
- Adjust operating voltage to get optimum contrast at the center
of the display.
Note 3: Definition of contrast ratio
Note 4: Definition of Response time
The definition of contrast ratio (Test LCM using SR-3A (1°)):
Definition of Response time.
Contrast
Luminance When LCD is at “White” state
The response time is defined as the LCD optical switching time
Ratio(CR)
=
Luminance When LCD is at “Black” state
interval between “White” state and
(Contrast Ratio is measured in optimum common electrode
“ Black” state. Rise time (T ON ) is the time between photo detector
voltage)
output intensity changed from 90%
to 10%. And fall time (T OFF ) is the time between photo detector
output intensity changed from 10%
to 90%.
Note 5: Definition of color chromaticity (CIE1931)
Note 6: Definition of Luminance Uniformity
Definition of Color of CIE1931 Coordinate and NTSC Ratio.
Active area is divided into 9 measuring areas (Refer Fig. 2). Every
measuring point is placed at the
Color gamut:
center of each measuring area.
Area of RGB triangle
Luminance Uniformity (U) = Lmin/ Lmax
S=
X100%
Area of NTSC triangle
L-------Active area length W----- Active area width
Lmax: The measured Maximum luminance of all measurement
position.
Lmin: The measured Minimum luminance of all measurement
position.
Note 7: Definition of Luminance:
Measured the luminance of white state at center point
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8. LCD Module Design and Handling Precautions
8. 液晶显示模块设计和使用须知
- 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
module get the best contrast ratio under different
在不同的使用温度下以及在不同的视角和位置观
temperatures, view angles and positions.
察模块显示，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 - 请注意液晶显示模块的显示品质判定是指在正常
contrast ratio within viewable area. Unexpected display
对比度下以及视窗(V.A)范围内进行的，非正常
pattern may com out under abnormal contrast ratio.
对比度下液晶可能会出现非预期的显示不良，应
- Never operate the LCD module exceed the absolute
注意区分。
maximum ratings.
- 请勿在最大额定值以外使用液晶显示模块。
- 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
- Keep signal line as short as possible to reduce external noise
输送信号。
interference.
- 请尽可能缩短信号线的连接，以避免对液晶显示
- IC chip (e.g. TAB or COG) is sensitive to light. Strong light
模块的信号干扰。
might cause malfunction. Light sealing structure casing is - 集成电路因 IC 芯片(如 TAB 或 COG)对紫外线极
recommended.
为敏感，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 - 请在液晶显示模块与外壳之间保留足够的空间
case and LCD panel, to prevent external force passed on to
(可使用衬垫)，以缓冲外力对液晶显示模块的损
the panel; otherwise that may cause damage to the LCD and
坏或因受力不均而产生的显示不匀等异常现象。
degrade its 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
(continuous ON segment).
有出现残影的风险；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.
- 请勿在阳光直射、高湿、高温或低温下储存和使
- When storing and operating LCD module, avoids exposure to
用液晶显示模块，这将造成液晶显示模块的损坏
direct sunlight, high humidity, high or low temperature. They
或失效。
may damage 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
storage/operate temperature) for more than 48hr.
用或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 。
- LCD module should be stored in the room without acid, alkali - 请勿让液晶显示模块存储于带有 酸性, 碱性,
and harmful gas.
有害气体环境之中。
- Avoid dropping & violent shocking during transportation, and - 在运输过程中, 请勿让液晶显示模块跌落与猛烈
no excessive pressure press, moisture and sunlight.
震动, 同时避免 异常挤压, 高湿度, 与阳光照
- LCD module can be easily damaged by static electricity.
射.
Please maintain an optimum anti-static working environment - 液晶显示模块极易受静电损坏，请务必保证液晶
to protect the LCD module. (eg. ground the soldering irons
显示模块在防静电的工作环境中使用或保存。
properly)
(如: 烙铁正确接地,等)
- 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
- Only hold LCD module by its sides. Never hold LCD module
况。
by applying force on the heat seal or TAB.
- 请手持液晶显示模块的边沿取放模块，防止热压
- When soldering, control the temperature and duration avoid
纸或 TAB 部位受力。
damaging the backlight guide or diffuser which might - 焊接液晶模块时，请注意控制烙铁的温度、焊接
degrade the display result such as uneven display.
时间，以免烫坏导光板或偏光片，导致显示不匀
- Never let LCD module contact with corrosive liquids, which
等不良现象发生。
might cause damage to the backlight guide or the electric - 请勿使用洗板水等腐蚀性液体接触液晶模块，以
circuit of LCD module.
免腐蚀导光板或模块电路。
- Only clean LCD with a soft dry cloth, Isopropyl Alcohol or
Ethyl Alcohol. Other solvents (e.g. water) may damage the - 仅可使用柔软的干布, 异丙醇或乙醇清洁液晶屏
LCD.
表面，其他任何溶剂(如:水)都有可能损坏液晶
- Never add force to components of LCD module. It may cause
模块。
invisible damage or degrade the module's reliability.
- 请勿挤压液晶显示模块上的元器件，以避免产生
- When mounting LCD module, please make sure it is free
潜在的损坏或失效而影响产品可靠性。
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from twisting, warping and bending.
- 装配液晶显示模块时，请务必注意避免液晶显示
- Do not add excessive force on surface of LCD, which may
模块的扭曲或变形。
cause the display color change abnormally.
- 请勿挤压液晶显示屏表面，这将导致显示颜色的
- LCD panel is made with glass. Any mechanical shock (e.g.
异常。
dropping from high place) will damage the LCD module.
- 液晶屏由玻璃制作而成，任何机械碰撞(如从高
处跌落)均有可能损坏液晶显示模块。
- Protective film is attached on LCD screen. Be careful when - 液晶屏表面带有保护膜, 揭除保护膜时需要注意
peeling off this protective film, since static electricity may be
可能产生的静电。
generated.
- 因液晶显示屏表面的偏光片极易划伤，安装完成
- Polarizer on LCD gets scratched easily. If possible, do not
之前请尽量不要揭下保护膜。
remove LCD protective film until the last step of installation.
- 请缓慢揭除保护膜，在此过程中液晶显示屏上可
- When peeling off protective film from LCD, static charge may
能会产生静电线，此为正常情况，可在短时间内
cause abnormal display pattern. The symptom is normal, and
消失。
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
leaks out, be sure not to get any in your mouth, if the
出; 相关液体不可吞吃, 绝对不可接触嘴巴, 如
substance comes into contact with your skin or clothes
接触到皮肤或衣服, 请使用肥皂与清水彻底清
promptly wash it off using soap and water.
洗.
9. CTP Mounting Instructions
9.1 Bezel Mounting (Figure 1)
9. 电容触摸屏安装指导
- The bezel window should be bigger than the CTP active 9.1 面框安装（附图 1）
area. It should be ≥ 0.5mm each side.
- 客户面框窗口应大于 CTP 动作区域，各边离动作
- Gasket should be installed between the bezel and the CTP
区应≥0.5mm.
surface.
- 面框与 CTP 面板间应垫有胶垫，其最终间隙约为
The final gap should be about 0.5~1.0mm.
0.5～1.0mm.
- It is recommended to provide an additional support bracket
- 建议必要时在背面提供附加支架(例如无安装结
for backside support when necessary (e.g. slim type TFT
构的薄型 TFT 模块)，应仅利用适当支撑以保持
module without mounding structure). They should only
模块位置.
provide appropriate support and keep the module in place.
- The mounting structure should be strong enough to prevent
external uneven force or twist act onto the module.
- 安装结构应具有足够的强度，以防止外部不均匀
力或扭曲力作用到模块上.
Figure 1
9.2 Surface Mounting (Figure 2)
9.2 嵌入安装（附图 2）
- As the CTP assembling on the countersink area with double - 客户面框应具有使用双面胶粘贴 CTP 的结构沉台
side
adhesive.
面，其粘贴面要求平整且洁净无污以保证粘贴牢
The countersink area should be flat and clean to ensure the
靠.
double side adhesive installation result.
- The Bezel is recommend to keep a gap ( ≥ 0.3mm each side)
around the cover lens for tolerance.
- 考虑到制作误差，建议面框与 CTP 盖板之间四周
- It is recommended to provide an additional support bracket
留有≥0.3mm 间隙.
with gasket for backside support when necessary (e.g. TFT - 建议必要时在背面提供垫有胶垫附加支架(例如
module without mounding structure). They should only
无安装结构的 TFT 模块)，应仅利用适当支撑以
provide appropriate support and keep the module in place.
保持模块位置.
- The mounting structure should be strong enough to prevent
external uneven force or twist act onto the module
- 安装结构应具有足够的强度，以防止外部不均匀
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力或扭曲力作用到模块上。
Figure 2
9.3 Additional Cover Lens Mounting (Figure 3)
9.3 覆加盖板（附图 3）
- For the case of additional cover Lens mounting, it is - 需要覆加玻璃盖板的安装，为确保其功能，有必
necessary to recheck with the CTP specification about the
要查看产品规格书中有关盖板材料和厚度的说
material and thickness to ensure the functionality.
明.
- It should keep a 0.2~0.3mm gap between the cover lens and
the CTP surface..
- 玻璃盖板与 CTP 表面之间应留有 0.2～0.3mm 间
- The cover lens window should be bigger than the active area
隙.
of the CTP.It should be ≥ 0.5mm each side.
- It is recommended to provide an additional support bracket - 玻璃盖板视窗应大于 CTP 动作区域，各边离动作
for backside support when necessary (e.g. slim type TFT
区应≥0.5mm。
module without mounding structure). They should only - 建议必要时在背面提供附加支架(例如无安装结
provide appropriate support and keep the module in place.
构的薄型 TFT 模块)，应仅利用适当支撑以保持
- The mounting structure should be strong enough to prevent
模块位置.
external uneven force or twist act onto the module.
- 安装结构应具有足够的强度，以防止外部不均匀
力或扭曲力作用到模块上.
Figure 3
10. RTP Mounting Instructions
10. 电阻触摸屏安装指导
- It should bezel touching the RTP Active Area (A.A.) to
- 为避免面框直接压在动作区(A.A.)上造成误动
prevent abnormal touch.It should left gab D=0.2~0.3mm in
作，面框与电阻触摸屏(RTP)之间应留有一定的
between. (Figure 4)
空隙 D=0.2~0.3mm 之间.(附图 4)
- Outer bezel design should take care about the area outside
- 设计面框时，要注意用面框保护触摸屏四周的非
the A.A. Those areas contain circuit wires which is having
保证操作区域，因为布线区域在此处形成一台
different thickness. Touching those areas could de-form the
阶，在此区域附近操作时 ITO Film 变形较大，
ITO film. As a result bezel the ITO film be damaged and
容易导致 ITO 损坏而降低寿命。为保护 RTP 和避
shorten its lifetime.
免误操作，在 RTP 与面框之间垫缓冲物
It is suggested to protect those areas with gasket (between
（Gasket），我们建议设计面框应覆盖动作区的
the bezel and RTP).The suggested figures are B≥0.50mm;
边缘，面框边缘到 V.A.区的距离 B≥0.50mm; 垫
C≥0.50mm. (Figure 4)
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 - 在设计面框与 RTP 组装时，应考虑到面框内侧与
the RTP. (Figure 4)
RTP 外侧的间距 E≥0.2mm. (附图 4)
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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
and RTP A.A. should be bigger than the TFT A.A.
V.A.
(Figure 5)
及 RTP 的动作区 A.A. 应不小于 TFT 的动作区
A.A.
(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.
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