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

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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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LCD Module User Manual

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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

Ω

-

Y Resistance

100

-

500

Ω

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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