LMT185EBKFDA

LMT185EBKFDA

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

Chenzhonghua

Date: 2024-03-16

Date:

Rev. Descriptions

Edit

Release Date

0.1

Preliminary

Chenzhonghua

2024-03-16

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LCD Module User Manual

LMT185EBKFDA

Table of Content

1. General Description........................................................................................................... 3

1.1 Introduction.............................................................................................................................................3

1.2 Features .............................................................................................................................................3

1.3 Application.............................................................................................................................................. 3

1.4 General Specification.............................................................................................................................4

2. Terminal Function.............................................................................................................. 5

2.1 Electrical Interface Connection..............................................................................................................5

2.2 LED Light Bar.........................................................................................................................................6

3. Absolute Maximum Ratings.............................................................................................. 6

3.1 Driving TFT LCD Panel..........................................................................................................................6

4. Electrical Characteristics.................................................................................................. 7

4.1 Electrical Specifications......................................................................................................................... 7

4.2 Backlight Unit......................................................................................................................................... 8

5. LVDS Interface....................................................................................................................9

6. Timing Chart..................................................................................................................... 10

6.1 AC Characteristics(LVDS)....................................................................................................................10

6.2 LVDS Rx Interface Timing Parameter..................................................................................................11

6.3 Sync Timing Waveforms...................................................................................................................... 12

6.4 Vertical Timing Waveforms.................................................................................................................. 12

6.5 Horizontal Timing Waveforms..............................................................................................................12

7. Input signals,Basic display colors &Grayscale of colors.............................................13

8. Power Sequence.............................................................................................................. 14

9. Optical Characteristics.................................................................................................... 14

9.1 Overview...............................................................................................................................................14

9.2 Optical Characteristics.........................................................................................................................15

10. Mechanical characteristics............................................................................................17

11. Warranty..........................................................................................................................17

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1. General Description

1.1 Introduction

LMT185EBKFDA is a color active matrix TFT LCD module using amorphous silicon

TFT's (Thin Film Transistors) as an active switching devices. This module has a 18.5

inch diagonally measured active area with WXGA resolutions (1366 horizontal by 768

vertical

pixel array). Each pixel is divided into RED, GREEN, BLUE dots which are arranged

in vertical stripe and this module can display 16.7M colors. The TFT-LCD panel used

for this module is adapted for a low reflection and higher color type.

1.2 Features

 LVDS Interface with 1 pixel / clock

 High-speed response

 Low power consumption

 6-bit (Hi-FRC) color depth, display 16. 7M colors

 Incorporated edge type back-light (One Light Bar)

 High luminance and contrast ratio, low reflection and normal viewing angle

 DE (Data Enable) only

 RoHS

 ES 6.0 compliant

 Gamma correction

1.3 Application

 Desktop Type of PC & Workstation Use

 Slim-Size Display for Stand-alone Monitor

 Display Terminals for Control System

 Monitors for Process Controller

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1.4 General Specification

Parameter

Specification

Unit

Remarks

Active area

409.8(H) × 230.4(V)

Number of pixels

1366(H) × 768(V)

pixels

Pixel pitch

0.1(H) ×0.3(V)

Pixel arrangement

RGB Vertical stripe

Display colors

16.7M

colors

Display mode

Normally Black

Dimensional outline

430.4(H) ×254.6(V) ×10.9(D) typ.

Detail refer to drawing

Weight

1300(typ.)

Bezel width (L/R/U/D) 8.5/8.5/10.3/10.3

Surface Treatment

Haze 25%, 3H

Back-light

rightedge side, 1-LED Light bar

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2. Terminal Function

2.1 Electrical Interface Connection

 CN1

Module Side Connector : UJU IS100-30O-C23 or Equivalent

User Side Connector : JAE FI-X30H or Equivalent

Pin No

Symbol

Function

Remark

No connection

GND

GND Ground

RX0-

Negative LVDS differential data input. Channel 0

RX0+

Positive LVDS differential data input. Channel 0

GND

Ground

Optical: Bist function

RX1-

Negative LVDS differential data input. Channel 1

RX1+

Positive LVDS differential data input. Channel 1

GND

Ground

RX2-

Negative LVDS differential data input. Channel 2

RX2+

Positive LVDS differential data input. Channel 2

GND

Ground

RXCLK-

Negative LVDS differential clock input.

RXCLK+

Positive LVDS differential clock input.

GND

Ground

RX3-

Negative LVDS differential data input. Channel 3

RX3+

Positive LVDS differential data input. Channel 3

GND

Ground

Not connection, this pin should be open.

GND

Ground

GND

Ground

GND

Ground

VCC

5V Power supply

VCC

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2.2 LED Light Bar

-LED connector ： 3708K-Q06N-00R manufactured by Entry

Pin No

Symbol

Description

IRLED1

LED current sense for string1

IRLED2

LED current sense for string2

VLED

LED power supply

VLED

LED power supply

IRLED3

LED current sense for string3

IRLED4

LED current sense for string4

3. Absolute Maximum Ratings

3.1 Driving TFT LCD Panel

Symbol

Min.

Max.

Unit

Remarks

Parameter

Power Supply Voltage

V DD

-0.3

5.5

Ta = 25 ℃

Logic Supply Voltage

V IN

VSS-0.3

V DD +0.3

LED Channel Current

I BL

Operating Temperature

T OP

+50

℃

Storage Temperature

T ST

-20

+60

℃

Note : 1) Temperature and relative humidity range are shown in the figure below.

Wet bulb temperature should be 39 OC max. and no condensation of water.

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4. Electrical Characteristics

4.1 Electrical Specifications

[Ta =25± 2 ℃ ]

Parameter

Min.

Typ.

Max.

Unit

Remarks

Power Supply Voltage

V DD

4.5

5.0

5.5

Note1

Power Supply Current

I DD

500

720

In-Rush Current

I RUSH

Note 2

Permissible Input Ripple

V RF

300

Note1,3

Voltage

High Level Differential Input

V IH

+100

Threshold Voltage

Low Level Differential Input

V IL

-100

Threshold Voltage

Differential input voltage

|V ID |

200

600

Differential input common mode Vcm

1.0

1.2

1.5

V IH =100mV,

voltage

V IL =-100mV

LED ChannelVoltage

V L

17.4

19.8

LED Channel Current

I L

100

LED Lifetime

30,000

Hrs

Power Consumption

P D

2.5

3.6

@60Hz

P BL

7.2

7.92

W I L =100mA, Note 4

P total

8.62

10.33

Notes : 1. The supply voltage is measured and specified at the interface connector of LCM.

The current draw and power consumption specified is for VDD=5.0V, Frame rate=60Hz and

Clock frequency = 75.4MHz. Test Pattern of power supply current

a) Typ : Color Bar pattern

b) Max: Gray Level 255

2.Duration of rush current is about 2 ms and rising time of VDD is 520 μs ± 20 %

3.Ripple Voltage should be covered by Input voltage Spec.

4.Calculated value for reference (VL × IL ) × 4(channel) excluding driver loss. (LED Light bar: 6S4P)

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4.2 Backlight Unit

Parameter

Min.

Typ.

Max.

Unit

Remarks

LED Light Bar Input Voltage

Per Input Pin

VPIN

17.4

19.8

Duty 100%

LED Light Bar Input Cuttent

Per Input pin

IPIN

100

LED Power Consumption

P BL

7.2

7.92

Note 3

LED Life-Time

30,000

Hrs

Note 4

LED bar consists of 24LED packages,4 strings(parallel)*6packages(serial)

Note1: There are one light bar ,and the specified current is input LED chip 100% duty current

Note2: The sense current of each input pin is 100mA

Note3: PBL=4 Input pins*VPIN × IPIN

Note4: The lifetime is determined as the time at which luminance of LED become 50% of the initial

brightness or not normal lighting at IPIN=85mA on condition of continuous operating at

25 ± 2 ℃

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5. LVDS Interface

LMT185EBKFDA

Transmitter

Interface

Remark

(CN11)

Input Signal

Pin No.

Pin No. System (Tx)

TFT-LCD

(Rx)

Pin No.

OR0

OR1

OR2

OR3

RXO0-

OUT0- OUT0+

RXO0+

OR4

OR5

OG0

OG1

OG2

OG3

OG4

OUT1-

RXO1-

OUT1+

RXO1+

OG5

OB0

OB1

OB2

OB3

OB4

OB5

OUT2-

RXO2-

OUT2+

RXO2+

Hsync

Vsync

MCLK

CLK OUT-

RXO CLK-

CLK OUT+

RXO CLK+

OR6

OR7

OG6

OG7

OUT3-

RXO3-

OUT3+

RXO3+

OB6

OB7

RSVD

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6. Timing Chart

6.1 AC Characteristics(LVDS)

Item

Symbols

Min

Typ

Max

Unit

DCLK

Period

tCLK

10.6

13.26

15.91

Frequency

62.9

75.4

94.3

MHz

Horizontal

Period

tHP

1446

1560

1936

tCLK

Display

Term

Horizontal Valid

tHV

1366

tCLK

Horizontal Blank

tHB

194

570

tCLK

Frequency

40.3

48.36

60.45

KHz

Vertical

Period

tVP

778

806

888

tHP

Display

Term

Vertical Valid

tVV

768

tHP

Vertical Blank

tVB

120

tHP

Frequency

LVDS

Input spread

SSr

-3

Receiver

clock

spectrum ratio

Note: The DCLK range at last line of V-blanking should be set in 0~987

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6.2 LVDS Rx Interface Timing Parameter

The specification of the LVDS Rx interface timing parameter is shown.

Item

Symbol

Min

Typ

Max

Unit

Remark

CLKIN Period

tRCIP

10.60

13.26

15.91

nsec

Input Data 0

tRIP1

-0.4

0.0

+0.4

nsec

Input Data 1

tRIP0

tRCIP/7-0.4

tRCIP/7

tRCIP/7+0.4

nsec

Input Data 2

tRIP6

2 ×tRCIP/7-0.4

2 ×tRCIP/7

2 ×tRCIP/7+0.4

nsec

Input Data 3

tRIP5

3 ×tRCIP/7-0.4

3 ×tRCIP/7

3 ×tRCIP/7+0.4

nsec

Input Data 4

tRIP4

4 ×tRCIP/7-0.4

4 ×tRCIP/7

4 ×tRCIP/7+0.4

nsec

Input Data 5

tRIP3

5 ×tRCIP/7-0.4

5 ×tRCIP/7

5 ×tRCIP/7+0.4

nsec

Input Data 6

tRIP2

6 ×tRCIP/7-0.4

6 ×tRCIP/7

6 ×tRCIP/7+0.4

nsec

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6.3 Sync Timing Waveforms

1) Need over 3 H-sync during V-Sync Low

2) Fix H-Sync width from V-Sync falling edge to first rising edge

6.4 Vertical Timing Waveforms

6.5 Horizontal Timing Waveforms

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7. Input signals,Basic display colors &Grayscale of colors

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8. Power Sequence

To prevent a latch-up or DC operation of the LCD module, the power on/off sequence s

hall be as shown in below

 0.5 ms ≤ T1≤10ms

 0 ≤T2 ≤50 ms

 0 ≤ T3 ≤50 ms

 1sec ≤ T4

 200 ms ≤T5

 200 ms ≤T6

Notes:

1. When the power supply VDD is 0V, keep the level of input signals on

the low or keep high impedance.

2. Do not keep the interface signal high impedance when power is on.

3. Back Light must be turn on after power for logic and interface signal are valid.

4. T7 decreases smoothly, there is none re-bouncing voltage.

9. Optical Characteristics

9.1 Overview

The test of Optical specifications shall be measured in a dark room (ambient luminance ≤1

lux and temperature = 25 ± 2 ℃ ) with the equipment of Luminance meter system (Goniometer system and

TOPCONE PR730) and test unit shall be located at an approximate distance 50cm from the LCD surface at a

viewing angle of θ and Φ equal to 0. We refer to θ Ø=0 (=θ 3 ) as the 3 o’clock direction (the “right”), θ Ø=90 (= θ 12 ) as

the 12 o’clock direction (“upward”), θ Ø=180 (= θ 9 ) as the 9 o’clock direction (“left”) and θ Ø=270 (= θ 6 ) as the 6

o’clock direction (“bottom”). While scanning θ and/or Ø, the center of the measuring spot on the Display

surface shall stay fixed. The measurement shall be executed after 30 minutes warm-up period. VDD shall be

5.0V +/-10% at 25 ℃ . Optimum viewing angle direction is 6 ’clock

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9.2 Optical Characteristics

Item

Symbol

Conditi

Min

Typ

Max

Unit Remark

θT

View Angles

θB

CR ≧ 10

Degree

Note 2

θL

θR

Contrast Ratio

θ=0°

700

1000

Note1

Note3

Response Time

TON+TOFF

25 ℃

Note1

Note4

White

0.283

0.313

0.343

0.299

0.329

0.359

Red

0.638

0.658

0.688

Backlight

0.308

0.338

0.368

Chromaticity

Note5

0.267

0.297

0.327

Green

Note1

0.627

0.657

0.687

Blue

0.122

0.152

0.182

0.040

0.070

0.100

Uniformity

Note1

Note6

Luminance

200

250

cd/m 2

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.

Note 3:Definition of contrast ratio

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“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%.

White (TFT

Black (TFT

White (TFT

off)

on)

off)

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.

L-------Active area length

W----- Active area width

Luminance Uniformity (U) = Lmin/ Lmax

Lmax: The measured Maximum luminance of all measurement position.

Lmin: The measured Minimum luminance of all measurement position.

Note 7: Definition of Luminance:

Measure the luminance of white state at center point.

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10. Mechanical characteristics

Parameter

Specification

Unit

Dimensional outline

430.4 × 254.6× 10.9

Weight

1300(typ.)

gram

Active area

409.8(H) × 230.4(V)

Pixel pitch

0.1(H) × 0.3(V)

Number of pixels

1366(H)× 768(V) (1 pixel = R + G + B dots)

pixels

Back-light

Right edge side 1-LED Light bar Type

11. 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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