TOPWAY LMT121ENLFWA LCD Module User Manual

TOPWAY LMT121ENLFWA LCD Module

Product Information

• Model No: LMT121ENLFWA

• Model Version: 00

• Spec Version: V2.0

• Issued Date: 2021-03-23

• Size: 12.1 inch

• Resolution: 1280(RGB) x 800

• Technology Type: SFT

• Pixel Configuration: R.G.B. Vertical
  Stripe

• Pixel Pitch (mm): 0.204×0.204

• Display Mode: Transmissive, Normally
  Black

• Surface Treatment(Up Polarizer): AG (All
  direction)

• LCM (W x H x D) (mm): 278.0×184.0x9.9

• Active Area(mm): 261.1×163.2

• TSP: Without Touch Screen

• Matching Connection Type: JAE: FI-X30CL

• Weight (g): 445

• Interface: 1port LVDS, 6/8bit selectable

• Color Depth: 16.7M/262k

Product Usage Instructions

1. Connect the backlight power supply to pins VLED, P (1-4).
2. Connect the backlight on/off control to pin VLED_EN, I (5). Set to 1 for ON and 0 for OFF.
3. Connect the backlight dimming control to pin VLED_PWM, I (6).
4. Connect the power ground to pins GND, P (7-8, 11-12, 15, 18, 21, 24).
5. Connect the power supply to pins VDD, P (9-10).
6. Connect the LVDS differential data inputs to pins Rxin0-, I
   (13), Rxin0+, I (14), Rxin1-, I (16), Rxin1+, I (17), Rxin2-, I
   (19), Rxin2+, I (20), RxCLK-, I (22), RxCLK+, I (23), Rxin3-, I
   (25), and Rxin3+, I (26).

Record of Revision

short side) on page18.

| wangxikaun
1.3| 2020-04-01| Modify display direction on page5.

Update timing on page10.

| wangxikaun
1.4| 2020-08-06| Update vibration test condition on page17| wangxikaun

wangxikaun

2.0| 2021-03-23| Final Version Released.
 |  |  |

General Specifications

Display Spec.

| Size| 12.1 inch
Resolution| 1280(RGB) x 800
Technology Type| SFT
Pixel Configuration| R.G.B. Vertical Stripe
Pixel Pitch (mm)| 0.204×0.204
Display Mode| Transmissive, Normally Black
Surface Treatment(Up Polarizer)| AG
Viewing Direction| All direction

Mechanical Characteristics

| LCM (W x H x D) (mm)| 278.0×184.0x9.9
Active Area(mm)| 261.1×163.2
With /Without TSP| Without Touch Screen
Matching Connection Type| JAE: FI-X30CL
Weight (g)| 445
Electrical Characteristics| Interface| 1port LVDS, 6/8bit selectable
Color Depth| 16.7M/262k

• Note 1: Viewing direction for best image quality is different from the TFT definition, there is a 180-degree shift.
• Note 2: Requirements on Environmental Protection: Q/S0002
• Note 3: LCM weight tolerance: +/- 5%

Input/Output Terminals

TFT LCD Panel

Connector type: MSAKT2407P30HB(STM) Matching Connector: JAE FI-X30CL or compatible

High or NC–>8 bit input mode

|
29| GND| P| Power ground|
30| GND| P| Power ground|

• Note1: I/O definition : I Input P Power /Ground
• Note 2: Display direction (PCB at down side)

Absolute Maximum Ratings

Driving TFT LCD Panel

Stress Rating.

LED power| VLED| -0.50| 33V| V
LED control| VLED_EN、VLED_PWM| -0.50| 5.5V| V
Operating Temperature| Top| -20.0| 70.0| ℃|
Storage Temperature| Tst| -30.0| 80.0| ℃|

Relative Humidity (Note1)

|

RH

| —| ≤95| %| Ta≤40℃
—| ≤85| %| 40℃＜Ta≤50℃
—| ≤55| %| 50℃＜Ta≤60℃
—| ≤36| %| 60℃＜Ta≤70℃
—| ≤24| %| 70℃＜Ta≤80℃
Absolute Humidity| AH| —| ≤70| g/m³| Ta＞70℃

Table 3.1 Absolute maximum rating
Note1: Ta means the ambient
It is necessary to limit the relative humidity to the specified temperature range.
Condensation on the module is not allowed.

Electrical Characteristics

Driving TFT LCD Panel

Table 4.1 LCD module electrical characteristics

Note 1: To test the current dissipation, use the “white pattern” shown .

Note 2: Inrush’s current definition.

LVDS DC electrical characteristics

LVDS AC electrical characteristics

Note: The min value of c lock frequency( 30MHZ) is based on IC SPEC, user should set on suggested value.

Driving Backlight

Input voltage for VLED_PWM

signal

| High level| –| 1.2| –| 5.0| V|
Low level| –| 0| –| 0.35| V|
Input voltage for VLED_EN| High level| –| 1.5| –| 5.0| V|
Low level| –| 0| –| 0.8| V|
VLED_PWM frequency| Fpwm| 200| –| 10K| HZ|
VLED_PWM duty| D| 3| –| 100| %| Note1
Operating Life Time| —| 50000| –| —| hrs| Note2
Inrush current| IR| –| –| 1.5| A| Rising time:470us

Table 4.4 Backlight driving condition

• Note 1: According to LED driver IC characteristics, the minimum value of VELD_PWM duty may vary with VLED_PWM frequency, higher the frequency, bigger the duty.
• Note 2: Optical pe rformance should be evaluated at Ta=25 25℃ only.
• Note 3: If LED is driven by high current, high ambient temperature & humidity condition condition. The life time of LED will be reduced.
• Note 4: Operating life means brightness goes down to 50% of initial brightness. T ypical operating life time is estimated data.

Block Diagram

Note1: Relations between GND (Signal ground and LED drive er ground) and FG (Frame ground) in the LCD module are as follows:

GND – FG Connected
Note 2: GND and FG must be connected to customer equipment’s ground, and it is recommended that these grounds be connected together in customer equipment.

Timing Chart

LVDS signal timing characteristics

+ tHPW

Horizontal back porch| tHBP| 88| tclk|
Horizontal display area| tHD| 1280| tclk|
Horizontal front porch| tHFP| –| 72| –| tclk|
Horizontal period| tH| 1382| 1442| –| tclk|
Horizontal pulse width| tHPW| –| 2| –| tclk|
Vertical blanking time| tVBT| 26| 40| 74| tH| tVBP + tVFP

+ tVPW

Vertical back porch| tVBP| 23| tH|
Vertical display area| tVD| 800| tH|
Vertical front porch| tVFP| –| 15| –| tH|
Vertical period| tV| 826| 840| 874| tH|
Vertical pulse width| tVPW|  | 2|  | tH|

Table 5.1 Timing parameter

• Note: The blank setting must be even numbered.

Input Clock and Data Timing Diagram:

LVDS data input format

Note: This LCD module supports HV mode only, so an HSYNC&VSYNC signal is necessary.

Power On/Off Sequence

Table 5.4 Power on/off sequence

Note: It is advised that the backlight is turned on later than the display stable.

Optical Characteristics

Item| Symbol| Condition| Min| Typ| Max| Unit| Remark
---|---|---|---|---|---|---|---

View Angles

| θT|

CR≧10

| 75| 85| –|

Degree

|

Note 2

θB| 75| 85| –
θL| 75| 85| –
θR| 75| 85| –
Contrast Ratio| CR| θ=0°| 800| 1000| –| –| Note1 Note3

Response Time

|

TON+TOFF

|

25℃

|

–

|

25

|

40

|

ms

| Note1 Note4

Chromaticity

|

White

| x|

Backlight is on

| 0.250| 0.30| 0.350|

–

|

Note5 Note1

y| 0.270| 0.320| 0.370

Red

| x| 0.593| 0.643| 0.693
y| 0.286| 0.336| 0.386

Green

| x| 0.253| 0.303| 0.353
y| 0.571| 0.621| 0.671

Blue

| x| 0.096| 0.146| 0.196
y| 0.032| 0.082| 0.132
Uniformity| U| –| 70| 75| –| %| Note1 Note6
NTSC| –| –| 67| 72| –| %| Note 5
Luminance| L| –| 360| 450| –| cd/m2| Note1 Note7

Test Conditions:

1. The ambient temperature is 25±2℃.humidity is 65±7%
2. The test systems refer to Note 1 and Note 2.

Note 1: Definition of optical measurement system.
The optical characteristics should be measured in dark room. 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 2: Definition of viewing angle range and measurement system. viewing angle is measured at the center point of the LCD by CONOSCOPE(ergo-80)。

Note 3: Definition of contrast ratio

Contrast ratio (CR) Luminance measured when LCD is in the “White” state =Luminance measured when LCD is in the “Black” state

• White state “:The state is that the LCD should driven by Vwhite.
• Black state”: The state is that the LCD should driven by Vblack.
• Vwhite: To be determined Vblack: To be determined.
• 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 the time between photo detector output intensity changed from 90% to 10%. And fall time (TOFF) is the time between photo detector output intensity changed from 10% to 90%.
• Note 5: Definition of color chromaticity (CIE1931)
• Color coordinates measured at center point of LCD.
• Note 6: Definition of Luminance Uniformity
• Active area is divided into 9 measuring areas (Refer Fig. 2). Every measuring point is placed at the center of each measuring area.
• Luminance Uniformity(U) = Lmin/ Lmax
• L——-Active area length W—– Active area width
• Lmax: The measured maximum luminance of all measurement positions.
• Lmin: The measured minimum luminance of all measurement positions.
• Note 7: Definition of Luminance :
• Measure the luminance of the white state at the center point.

Environmental / Reliability Test

IEC60068-2-1:2007,GB2423.2-2008

2| Low Temperature Operation| Ta=-20℃, 240hrs| IEC60068-2-1:2007 GB2423.1-2008

3

| High Temperature Storage

(non-operation)

| Ta=+80℃, 240hrs| IEC60068-2-1:2007 GB2423.2-2008

4

| Low Temperature Storage

(non-operation)

| Ta=-30℃, 240hrs| IEC60068-2-1:2007 GB2423.1-2008

5

| High Temperature & High Humidity

Operation

| Ta = +60℃, 90% RH max,240

hours

| (Note2)

IEC60068-2-78 :2001 GB/T2423.3—2006

6

| Thermal Shock (non-operation)| -30℃ 30 min~+80℃ 30 min, Change time:5min,100cycles| Start with cold temperature, End with high temperature,

IEC60068-2-14:1984,GB2423.22-2002

7

| Electro Static

Discharge (operation)

| C=150pF,R=330Ω;

Contact:±4Kv, 5times;

Air:±8KV,5times;

| IEC61000-4-2:2001 GB/T17626.2-2006

8

| Vibration

(non-operation)

| 5~100HZ,19.60m/s2,1min/cycle 120times Per X\Y\Z| (Note2)

IEC60068-2-6:1982 GB/T2423.10—1995

9

| Shock

(non-operation)

| 60G 6ms, ±X,±Y,±Z       3 times for each direction| (Note2)

IEC60068-2-27:1987 GB/T2423.5—1995

10| Package Drop Test| Height:80 cm,1 corner, 3 edges, 6 surfaces| GB/T4857.5—1992

11

| ****

Package Vibration

| Frequency：5-20-200HZ， PSD：0.01-0.01-0.001

Total：0.781g2/HZ,

（x/y/z each direction 30min

| ****

GB/T4857.23-2012

）

Note1: Ta is the ambient temperature of sample.
Note 2: When vibration/shock test, LCD module is laid down and fixed to the test equipment.

Mechanical Drawing

Precautions For Use of LCD Modules

• *  **a)** Handling Precautions

1. The display panel is made of glass. Do not subject it to mechanical shock by dropping it from a high place, etc.

2. If the display panel is damaged and the liquid crystal substance inside it leaks out, be sure not to get any in your mouth, if the substance comes into contact with your skin or clothes, promptly wash it off using soap and water.

3. Do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to vary.

4. The polarizer covering the display surface of the LCD module is soft and easily scratched. Handle this polarizer carefully.

5. If the display surface is contaminated, breathe on the surface and gently wipe it with a soft dry cloth. If still not completely clear, moisten a cloth with one of the following solvents:－ Isopropyl alcohol

   • Ethyl alcohol
   • Solvents other than those mentioned above may damage the polarizer. Especially, do not use the following:
   • Water ,Ketone, Aromatic solvents

6. Do not attempt to disassemble the LCD Module.

7. If the logic circuit power is off, do not apply the input signals.

8. To prevent the destruction of the elements by static electricity, be careful to maintain an optimum work environment.

9. Be sure to ground the body when handling the LCD Modules.

10. Tools required for assembly, such as soldering irons, must be properly ground.

11. To reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions.

12. The LCD Module is coated with a film to protect the display surface. Be careful when peeling off this protective film since static electricity may be generated.

13. b) Storage Precautions

14.  When storing the LCD modules, avoid exposure to direct sunlight or to the light of fluorescent lamps.

15. The LCD modules should be stored under the storage temperature range. If the LCD modules will be stored for a long time, the recommended condition is:
    Temperature : 0℃ ～ 40℃ Relatively humidity: ≤80%

16. The LCD modules should be stored in a room without acid, alkali, and harmful gas.

17. c) Transportation Precautions

The LCD modules should be no falling or violent shock during transportation and also should avoid the excessive press, water, damp, ness, and sunshine.

URL: www.topwaydisplay.com
Document Name: LMT121ENLFWA-Manual-Rev2.0(w_dwg)

References

• 液晶显示模块-7寸显示屏-2.8寸显示屏-液晶屏厂家 | 拓普微科技

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