LMT070DDCFWD-NNA-2
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Lin Li
Date: 2018-10-12
Date:
Date:
Rev. Descriptions
Release Date
0.1
Preliminary release
2018-10-12
URL: www.topwaydisplay.com
Document Name: LMT070DDCFWD-NNA-2-Manual-Rev0.1
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LCD Module User Manual
LMT070DDCFWD-NNA-2
Table of Content
1. Applications ........................................................................................................................... 3
2. General Specification ............................................................................................................ 3
3. Block Diagram ........................................................................................................................ 3
4. Terminal Function .................................................................................................................. 4
4.1
K1 TFT Input Terminal ........................................................................................................................................... 4
4.2
K2 Touch Panel Terminal Functions ...................................................................................................................... 5
5. Absolute Maximum Ratings .................................................................................................. 5
6. Electrical Characteristics ...................................................................................................... 5
6.1
DC Characteristics ................................................................................................................................................. 5
6.2
Current Consumption ............................................................................................................................................. 5
6.3
LED Backlight Circuit Characteristics ..................................................................................................................... 6
6.4
Touch panel Characteristics ................................................................................................................................... 6
6.5
Power Sequence .................................................................................................................................................... 7
7. AC Characteristics ................................................................................................................. 8
7.1
Timing Characteristics ............................................................................................................................................ 8
7.2
Input Clock and Data Timing Diagram ................................................................................................................... 8
7.3
Timing .................................................................................................................................................................... 9
7.4
Data Input Format ................................................................................................................................................ 10
7.5
Optical Characteristics ......................................................................................................................................... 11
8. Precautions of using LCD Modules .................................................................................... 12
9. Appendix <Inspection items and criteria for appearance defect> ................................... 12
9.1
Bright/Dark Dots: .................................................................................................................................................. 12
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Document Name: LMT070DDCFWD-NNA-2-Manual-Rev0.1
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LCD Module User Manual
LMT070DDCFWD-NNA-2
1. Applications
This Module is designed for portable DVD, GPS car TV & PMP(portable multimedia player)
application which require high quality flat panel displays. It is also a good substitute for many
outmoded CSTN module in the industrial application.
This product is composed of a TFT-LCD panel, driver ICs, FPC ,LED backlight unit and touch
panel.
2. General Specification
Signal Interface :
Digital 24-bits RGB
Display Technology :
a-Si TFT active matrix
Display Mode :
TN Type Full Color / Transmissive / Normal White
Screen Size(Diagonal) :
7.0”
Outline Dimension :
164.9 x 100.0 x 7.2 (mm)
(see attached drawing for details)
Active Area :
154.08 x 85.92 (mm)
Number of dots :
800 x 3 (RGB) x 480
Pixel Pitch :
0.1926 x 0.179 (mm)
Pixel Configuration :
RGB Stripe
Backlight :
LED
Viewing Direction :
6 o’clock(Gray scale Inversion) (*1)
12 o’clock (*2)
Operating Temperature :
-20 ~ +70°C
Storage Temperature :
-30 ~ +80°C
Touch Panel type:
4 wire Resistive
Surface Treatment :
Anti-Glare Treatment
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.
3. Block Diagram
XL, XR, YU, YD
Touch Panel
VLED+,VLED-
Backlight Circuit
DVDD, GND, AVDD
VCOM
VGH, VGL
7’’ TFT Panel
DCLK
DE, HS, V
S,
MODE
DITHB
R0~R7, G0~G7, B0~B7
Source Driver
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LCD Module User Manual
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4. Terminal Function
4.1
K1 TFT Input Terminal
Pin No.
Pin Name
I/O
Descriptions
1
V LED+
2
V LED+
Power
Positive Backlight Power Supply
3
V LED-
4
V LED-
Power
Negative Backlight Power Supply
5
GND
Power
Power GND (0V)
6
V COM
Input
Common voltage
7
DV DD
Power
Power for Digital Circuit
8
MODE
Input
DE/SYNC mode select (*1)
9
DE
Input
Data input enable
10
VS
Input
Vertical Sync Input
11
HS
Input
Horizontal Sync Input
12
B7
:
:
Input
8bit Data for Blue
19
B0
20
G7
:
:
Input
8bit Data for Green
27
G0
28
R7
:
:
Input
8bit Data for Red
35
R0
36
GND
Power
Power GND (0V)
37
DCLK
Input
Sample clock(*2)
38
GND
Power
Power GND (0V)
39
L/R
Input
Left / right selection (*3)
40
U/D
Input
Up/down selection (*3)
41
V GH
Power
Gate ON Voltage
42
V GL
Power
Gate OFF Voltage
43
AV DD
Power
Power for Analog Circuit
44
RESET
Input
Global reset pin (*4)
45
NC
-
No connection
46
V COM
Input
Common Voltage
47
DITHB
Input
Dithering function (*5)
48
GND
Power
Power GND (0V)
49
NC
-
50
NC
No connection
Note:
* 1: DE/SYNC mode select. Normally pull high.
When select DE mode, MODE=”1”, VS and HS must pull high.
When select SYNC mode, MODE= “0”, DE must be grounded.
* 2: Data shall be latched at the falling edge of DCLK.
* 3: Selection of scanning mode
Setting of scan control input
U/D
L/R
Scanning direction
GND
DV DD
Up to down, left to right
DV DD
GND
Down to up, right to left
GND
GND
Up to down, right to left
DV DD
DV DD
Down to up, left to right
*4: Global reset pin. Active low to enter reset state. Suggest to connect with an RC reset circuit for stability. Normally pull high.
*5: Dithering function enable control, normally pull high.
When DITHB=”1”,Disable internal dithering function.
When DITHB=”0”,Enable internal dithering function.
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LCD Module User Manual
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4.2
K2 Touch Panel Terminal Functions
Pin No. Pin Name
I/O
Descriptions
1
XL
Passive Left Side sense Terminal
2
YD
Passive Down Side sense Terminal
3
XR
Passive Right Side sense Terminal
4
YU
Passive Up Side sense Terminal
5. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit
Condition
DV DD
-0.3
5.0
V
AV DD
6.5
13.5
V
Power voltage
V GH
-0.3
40.0
V
V GL
-20.0
0.3
V
V GH - V GL
-
40.0
V
Operating Temperature
T OP
-20
70
 C
No Condensation
Storage Temperature
T ST
-30
80
 C
No Condensation
Note:
*1. This rating applies to all parts of the module. And should not be exceeded.
*2. The operating temperature only guarantees operation of the circuit. The contrast, response speed,
and the other specification related to electro-optical display quality is determined at the room temperature, T OP =25.
*3. Ambient temperature when the backlight is lit (reference value)
*4. 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.
6. Electrical Characteristics
6.1 DC Characteristics
Items
Symbol
Min.
Typ.
Max.
Unit
Remark
DV DD
3.0
3.3
3.6
V
*2
Power voltage
AV DD
10.2
10.4
10.6
V
V GH
14.5
15.0
15.5
V
V GL
-10.5
-10.0
-9.5
V
Input signal voltage
V COM
3.54
4.04
4.54
V
Input logic high voltage
V IH
0.7VDD
-
DV DD
V
Input logic low voltage
V IL
0
-
0.3DV DD
V
*3
Note:
*1.Be sure to apply DVDD and VGL to the LCD first, and then apply VGH.
*2: DVDD setting should match the signals output voltage (refer to Note 3) of customer’s system board.
*3: DCLK,HS,VS,RESET,U/D, L/R,DE,R0~R7,G0~G7,B0~B7,MODE,DITHB.
6.2 Current Consumption
Items
Symbol
Min.
Typ.
Max.
Unit
Remark
I GH
0.05
0.2
1.0
mA
V GH = 15.0V
Current for Driver
I GL
0.2
0.5
1.0
mA
V GL = -10.0V
IDV DD
1
4.0
10
mA
DV DD =3.3V
IAV DD
5
20
50
mA
AV DD =10.4V
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6.3 LED Backlight Circuit Characteristics
Top=25 ℃
Items
Symbol
MIN.
TYP.
MAX.
Unit
Note
Forward Voltage
Vf
9.0
9.6
10.5
V
If=180mA
Forward Current
If
-
180.0
-
mA
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
6.4
Touch panel Characteristics
Items
MIN.
TYP.
MAX.
Unit
Note
Operating Voltage
-
5.0
-
V
-
Operating Force
100
-
160
g
-
Life Time
-
1,000,000
-
times -
X Resistance
400
-
1100
-
Y Resistance
100
-
500
Touch Panel Logic Details
YU
XL
XR
YD
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6.5 Power Sequence
6.5.1 Power on:
DV DD → VGL → AVDD → VGH → Data → B/L
6.5.2 Power off:
B/L → Data → VGH → AVDD → VGL → DV DD
Note :Data include R0~R7,B0~B7,G0~G7,U/D,L/R,DCLK,HS,VS,DE.
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LCD Module User Manual
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7. AC Characteristics
7.1 Timing Characteristics
Item
Symbol
MIN.
TYP.
MAX.
Unit
Remark
HS setup time
Thst
8
-
-
ns
HS hold time
Thhd
8
-
-
ns
VS setup time
Tvst
8
-
-
ns
VS hold time
Tvhd
8
-
-
ns
Data setup time
Tdsu
8
-
-
ns
Data hole time
Tdhd
8
-
-
ns
DE setup time
Tesu
8
-
-
ns
DV DD Power On Slew rate
TPOR
-
-
20
ms
From 0 to 90%
DV DD
DCLK cycle time
Tcph
20
-
-
ns
DCLK pulse duty
Tcwh
40
50
60
%
Note: For the details of the timing, please see the Driver IC data sheet.
7.2 Input Clock and Data Timing Diagram
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7.3 Timing
Item
Symbol
MIN.
TYP.
MAX.
Unit
Remark
Horizontal Display Area
thd
-
800
-
DCLK
DCLK Frequency
fclk
26.4
33.3
46.8
MHz
One Horizontal Line
th
862
1056
1200
DCLK
HS pulse width
thpw
1
-
40
DCLK
HS Blanking
thb
46
46
46
DCLK
HS Front Porch
thfp
16
210
354
DCLK
Vertical Display Area
tvd
-
480
-
TH
VS period time
tv
510
525
650
TH
VS pulse width
tvpw
1
-
20
TH
VS Blanking
tvb
23
23
23
TH
VS Front Porch
tvfp
7
22
147
TH
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7.4 Data Input Format
Figure 6-4-1 Horizontal input timing diagram.
Figure 6-4-2 Vertical input timing diagram.
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7.5 Optical Characteristics
Item
Symbol
Condition
MIN.
TYP.
MAX.
UNIT
Note.
θ L
9 o’clock
60
70
-
Viewing angle
θ R
3 o’clock
60
70
-
(CR ≥ 10)
degree
*2
θ T
12 o’clock
40
50
-
θ B
6 o’clock
60
70
-
T f
-
10
20
msec
Response Time
*3
T r
-
15
30
msec
Contrast ratio
CR
400
500
-
-
Normal
W X
0.26
0.31
0.26
-
*1
Color chromaticlty
θ=0 o
W Y
0.28
0.33
0.38
-
Luminance
L
-
400
-
cd/m 2
*4
Luminance uniformity
Y U
70
75
-
%
*4
Note:
*1. Definition of Contrast Ratio
The contrast ratio could be calculate by the following expression:
Contrast Ratio (CR) = Luminanc with all pixels white / Luminance with all pixels black
*2 Definition of Viewing Angle
*3 Definition of response time
*4 Definition of Luminance Uniformity
Luminance uniformity (Lu)=
Min. Luminance form pt1~pt9 / Max Luminance form Pt1~pt9
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8. Precautions of using LCD Modules
Please refer to "LCD-Module-Design-Handling-Precaution.pdf".
Appendix <Inspection items and criteria for appearance defect>
Bright/Dark Dots:
Defect Type
Specification
Major
Minor
Bright Dots
N≤ 2
Dark Dots
N≤ 3
Total Bright and Dark Dots
N≤ 4
Note: 1. The definition of dot: The size of a defective dot over 1/2 of whole dot is regarded as one defective dot.
2. Bright dot: Dots appear bright and unchanged in size in which LCD panel is displaying under black
pattern.
3. Dark dot: Dots appear dark and unchanged in size in which LCD panel is displaying under pure red,
green, blue pattern.
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