LiteMax LF1745 Specification

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LITEMAX LF1745

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Sunlight Readable 17" LCD Display

(1st Edition 4/9/2004 )

All information is subject to change without notice.

LITEMAX Electronics Inc.

4F, No.131-3, Lane235, Bau-chiau Rd.,

Shin-dian City, Taipei County, Taiwan R.O.C.

Tel : 886-2-8919-1858

Fax: 886-2-8919-1300

Homepage: http://www.litemax.com.tw

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Contents

Introduction and Overview...3

General Specifications...4

Functional Block Diagram

Optical Characteristics

Pixel format image.

Electrical characteristics...9

Absolute Maximum Ratings

Connectors

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Signal Pin

Signal Description

Signal Electrical Characteristics

Interface Timing

Timing Characteristics

Timing Definition

Power Consumption

Power ON/OFF Sequence

Backlight Characteristics...17

Signal for Lamp connector

Reliability and Lifetime...18

Mechanical Characteristics...19

Litemax LI3601 Inverter...20

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INTRODUCTION AND OVERVIEW

This is a product specification that specifies form, fit, and function of the 17” TFT LCD monitor and its options. The LF1745 products are a family of high bright LCD monitors intended for use in a variety of industrial and commercial applications. Some of these applications include automatic teller machines (ATMs), fuel dispensing systems, ticketing and information kiosks, and intelligent vending machines. The LCD panel for LF1745 has a particularly fast response time of 16ms and consequently very well suited for video applications. The LF1745 is a 17” active matrix TFT LCD with a native resolution of 1280X1024. It has a typical luminance of 1000 nits with a +12VDC input. The video interface is through a standard 15 pin analog input with an integrated On-Screen Display (OSD).

OUTLINE

STRUCTURE AND PRINCIPLE

LF1745 module is composed of the driver LSIs for driving the TFT (Thin Film Transistor) array with an amorphous silicon thin film transistor liquid crystal display (a-Si TFT LCD) panel structure and a backlight. The a-Si TFT LCD panel structure is injected liquid crystal material into the narrow gap between a TFT array glass substrate and a color filter glass substrate. RGB (Red, Green, and Blue) data signals from a source system are modulated into a form suitable for active matrix addressing by the onboard signal processor and sent to the driver LSIs which in turn address the individual TFT cells. Working as an electro-optical switch, each TFT cell regulates transmitted light from the backlight assembly when worked by the data source. Color images are created by regulating the amount of transmitted light through the array of red, green and blue dots.

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APPLICATIONS

ΘKiosk, Public, Health Application, LCD TV, POI, Ticketing, Advertising, Gaming, Industrial Computing, Signage...

FEATURES

Θwide viewing angle ΘFast response time ΘHigh luminance ΘHigh contrast ΘWide color gamut ΘLuminance control ΘSmall foot prints

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GENERAL SPECIFICATIONS

Display area 337.92 (H) x 270.336 (V) mm

Drive system a-Si TFT active matrix

Display colors 262k

Number of pixels 1280 (H) x 1024 (V) pixel

Pixel arrangement RGB (Red, Green, Blue) vertical stripe

Pixel pitch 0.264 (H) x 0.264 (V) mm

Module size 358.5(H) x 296.5 (V) x 29(D) mm

Weight 1670 g (typ.)

Contrast ratio 500:1 (typ.)

Viewing angle At the contrast ratio 10:1

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ΘHorizontal: Left side 80° (typ.), Right side 80° (typ.)

ΘVertical: Up side 75° (typ.), Down side 75° (typ.)

Designed viewing direction

Polarizer pencil-hardness 3H (min.) [by JIS K5400]

Color gamut At LCD panel center

Response time 16 ms (typ.)

Luminance 1000 cd/m

Backlight

Power consumption At maximum luminance and checkered flag pattern

ΘOptimum grayscale (ӫ=2.2): perpendicular

60% (typ.) [against NTSC color space]

Ton (black 10% white 90%)

ΘBacklight unit: AU 1745

ΘInverter: LI3601

55 W (typ.)

(typ.)

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Functional Block Diagram

The following diagram shows the functional block of the 17.0 inches Color TFT-LCD Module:

LVDS

Con n ector

Y-Driver IC

TFT-LCD

1280*(3) *1024

+ 5 V

G1024

Pixels

X-Driver IC

DC P OWE R

D3840

10 CCFL

Inverter

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Optical Characteristics

The optical characteristics are measured under stable conditions at 25℃ (Room Temperature) :

Item Unit Conditions Min. Typ. Max.

Viewing Angle [degree]

Contrast ratio Normal Direction - -

Response Time (Note 1) [msec]

Color / Chromaticity Coordinates (CIE)

Color Coordinates (CIE) White

White Luminance @ CCFL 7.0mA (center)

Luminance Uniformity (Note 2) [%] 75 80 TCO99 1.5.2B luminance uniformity (Note 3)

Crosstalk (in 75Hz) (Note 4) [% ] 1.5

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Horizontal (Right) CR = 10 (Left)

Vertical (Up) CR = 10 (Down)

Horizontal (Right) CR = 5 (Left)

Vertical (Up) CR = 5 (Down)

Raising Time - 4 5 Falling Time - 12 20 Raising + Falling - 16 25 Red x 0.61 0.64 0.67 Red y 0.31 0.34 0.37 Green x 0.26 0.29 0.32 Green y 0.58 0.61 0.64 Blue x 0.11 0.14 0.17 Blue y 0.04 0.07 0.10 White x 0.28 0.31 0.34 White y 0.30 0.33 0.36

[cd/m2]

- -

60 60

70 70

80 80

75 75

85 85

80 80

500

1000

1.7

Equipment Pattern Generator, Power Supply, Digital Voltmeter, Luminance meter (PR 880, BM-5A) Aperture 1°with 100cm VD or 2°with 50cm viewing distance

Test Point Center (ISO point 22)

Environment < 1 lux

LCD Module

PR-880 /

BM5A /

BM7

measuring distance

Module Driving Equipment

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Note 1: Definition of Response time:

The output signals of photodetector are measured when the input signals are changed from “ Black” to “ White” (falling time), and from “ White” to “ Black” (rising time), respectively. The response time is interval between the 10% and 90% of amplitudes.

100

Optical Response

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TrR

TrD

Note 2: Brightness uniformity of these 9 points is defined as below:

90 %

white

50 %

white

black

10 %

50 %

90 %

Minimum Luminance in 9 Points (1-9)

Uniformity = ————————————————————

Maximum Luminance in 9 Points (1-9)

Note 3: TCO ’ 99 Certification Requirements and test methods for environmental labeling of Display Report No. 2 defines Luminance uniformity as below:

((Lmax,+30deg. / Lmin,+30deg.) + (Lmax,-30deg. / Lmin,-30deg.)) / 2

This panel is compatible with TCO99 approbation in luminance uniformity <

1.7, luminance contrast >0.5

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Note 4:

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1/2

184 gray level 184 gray level

Unit: percentage of dimension of display area

l L

l / LA x 100%= 1.5% max., LA and LB are brightness at location A and B

A-LA’

l / LB x 100%= 1.5% max., LA’ and LB’ are brightness at location A’ and B’

B-LB’

1/6

1/2

2/3 1/3

A’

Pixel format image

Following figure shows the relationship of the input signals and LCD pixel format.

1 2 1279 1280

1/2

1/6

1/3

1/2

B’

2/3

0 gray level

1st Line

1024th

R G B R G B

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emperature

Electrical characteristics

Absolute Maximum Ratings

Absolute maximum ratings of the module is as following:

Item Symbol Min Ma x Unit Conditions

Logic/LCD Drive Voltage VIN -0.3 +5.5 [Volt]

Select LVDS data order SELLVDS NC NC [Volt]

CCFL Inrush current ICFLL - 38 [mA]

CCFL Current ICFL - 7.6 [mA] rms

Operating Temperature TOP 0 +50 [oC] Note 1

Operating Humidity HOP 8 95 [%RH] Note 1

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Storage Temperature TST -20 +60 [oC] Note 1

Storage Humidity HST 8 95 [%RH] Note 1

Note 1 : Maximum Wet-Bulb should be 39Ċ and No condensation.

Relative Humidity %

100

Storage

range

Twb=39

Operation range

℃

T=40℃,H=95%

T=50℃,H=55%

T=60℃,H=39%

T=65℃,H=29%

Storage

range

-20

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Connectors

Physical interface is described as for the connector on module.

These connectors are capable of accommodating the following signals and will be following components.

Connector Name / Designation Interface Connector / Interface card

Manufacturer JAE or compatible

Type Part Number F I-X30S -HF

Mating Housing Part Number FI- X30S -H

Connector Name / Designation Lamp Connector / Backlight lamp

Manufacturer JST

Type Part Number BHR-04VS-1

Mating Type Part Number SM04(4.0)B-BHS-1-TB

Signal Pin

Pin# Signal Name Pin# Signal Name

1 RxO0- 2 RxO0+ 3 RxO1- 4 RxO1+ 5 RxO2- 6 RxO2+ 7 GND 8 RxOC-

9 RxOC+ 10 RxO311 RxO3+ 12 RxE013 RxE0+ 14 GND 15 RxE1- 16 RxE1+ 17 GND 18 RxE219 RxE2+ 20 RxEC21 RxEC+ 22 RxE323 RxE3+ 24 GND 25 NC 26 NC 27 NC 28 Power 29 Power 30 Power

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Signal Description

The module using a pair of LVDS receiver SN75LVDS82 (Texas Instruments) or compatible. LVDS is a differential signal technology for LCD interface and high speed data transfer device. Transmitter shall be SN75LVDS83(negative edge sampling) or compatible. The first LVDS port(RxOxxx) transmits odd pixels while the second LVDS port(RxExxx) transmits even pixels.

PIN # SIGNAL NAME DESCRIPTION

1 RxO0- Negative LVDS differential data input (Odd data)

2 RxO0+ Positive LVDS differential data input (Odd data)

3 RxO1- Negative LVDS differential data input (Odd data)

4 RxO1+

5 RxO2- Negative LVDS differential data input (Odd data, H-Sync,V-Sync,DSPTMG) 6 RxO2+ Positive LVDS differential data input (Odd data, H-Sync,V-Sync,DSPTMG) 7 GND Power Ground 8 RxOC- Negative LVDS differential clock input (Odd clock) 9 RxOC+ Positive LVDS differential clock input (Odd clock) 10 RxO3- Negative LVDS differential data input (Odd data) 11 RxO3+ Positive LVDS differential data input (Odd data) 12 RxE0- Negative LVDS differential data input (Even clock) 13 RxE0+ Positive LVDS differential data input (Even data) 14 GND Power Ground 15 RxE1- Positive LVDS differential data input (Even data) 16 RxE1+ Negative LVDS differential data input (Even data) 17 GND Power Ground 18 RxE2- Negative LVDS differential data input (Even data) 19 RxE2+ Positive LVDS differential data input (Even data) 20 RxEC- Negative LVDS differential clock input (Even clock) 21 RxEC+ Positive LVDS differential clock input (Even clock) 22 RxE3- Negative LVDS differential data input (Even data) 23 RxE3+ Positive LVDS differential data input (Even data) 24 GND Power Ground 25 NC 26 NC 27 NC 28 POWER Power 29 POWER Power 30 POWER Power

Note: Input signals of odd and even clock shall be the same timing.

Positive LVDS differential data input (Odd data)

LVDS DATA Name Description DSP Display Timing: When the signal is high, the pixel data shall be valid to be displayed V-S Vertical Sync: Both Positive and Negative polarity are acceptable H-S Horizontal Sync: Both Positive and Negative polarity are acceptable

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Interface connection

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TI LVDS X’ mitter

SN75LVDS83

Module LVDS signal

(interface connector pin7)

Signal Name Low(open)

D0 Red0 D1 Red1 D2 Red2 D3 Red3 D4 Red4 D5 Red7 D6 Red5 D7 Green0 D8 Green1

D9 Green2 D10 Green6 D11 Green7 D12 Green3 D13 Green4 D14 Green5 D15 Blue0 D16 Blue6 D17 Blue7 D18 Blue1 D19 Blue2 D20 Blue3 D21 Blue4 D22 Blue5 D23 NA D24 H Sync D25 V Sync D26 Display Timing D27 Red6

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8bits input: M170EN05 only catch bit 2 to bit 7 for 6 bit display 6bits input data format marked with ( ).

RCLKP1

RAP1

RBP1 RCP1

RDP1

G0(0) R5(R3) R4(R2) R3(R1) R2(R0) R1(0) R0(0)

B1(0) B0(0) G5(G3) G4(G2) G3(G1) G2(G0) G1(0)

DE VS HS RSV

B7(B5) B6(B4) G7(G5) G6(G4) R7(R5) R6(R4)

RCLKP2

RAP2

RBP2

G0(0) R5(R3) R4(R2) R3(R1) R2(R0) R1(0) R0(0)

B1(0) B0(0) G5(G3) G4(G2) G3(G1) G2(G0) G1(0)

RCP2

RDP2

Note: R/G/B data 7:MSB, R/G/B data 0:LSB

O = “ First Pixel Data”

E = “Second Pixel Data”

RSV

B7(B5) B6(B4) G7(G5) G6(G4) R7(R5) R6(R4)

B5(B3) B4(B2) B3(B1) B2(B0)

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Scaling IC

6 bits+FRC

8 bits LVDS transmitter

Controller IC

8 bits LVDS Receiver

8 bits RSDS transmitter

M170EN05 moduleLVDS interfaceSystem

Driver IC

6 bits RSDS receiver driver IC

open

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Signal Electrical Characteristics

Input signals shall be low or Hi-Z state when Vin is off It is recommended to refer the specifications of SN75LVDS82DGG (Texas Instruments) in detail.

Each signal characteristics are as follows;

Parameter Condition Min Max Unit

Vth

Vtl

Differential InputHigh Voltage(Vcm=+1.2V)

Differential Input Low Voltage(Vcm=+1.2V)

100

-100

[mV]

Interface Timings

Basically, interface timings described here is not actual input timing of LCD module but output timing of SN75LVDS82DGG (Texas Instruments) or equivalent.

Timing Characteristics

Signal Item Symbol MIN TYP MAX Unit

DTCLK Freq. Fdck 50 67.5 70 MHz DTCLK Cycle Tck 14.2 14.8 20 ns +V-Sync Frame Rate 1/Tv 56.25 75 77 Hz +V-Sync Cycle Tv 13 13.33 17.78 ms +V-Sync Cycle Tv 1035 1066 2047 lines +V-Sync Active level Tva 3 3 lines +V-Sync V-back porch Tvb 7 38 63 lines +V-Sync V-front porch Tvf 1 1 lines +DSPTMG V-Line m - 1024 - lines +H-Sync Scan rate 1/Th - 80.06 - KHz +H-Sync Cycle Th 800 844 1023 Tck +H-Sync Active level Tha (*1) 4 56 Tck +H-Sync Back porch Thb (*1) 4 124 Tc k +H-Sync Front porch Thf 4 24 Tck +DSPTMG Display Pixels n - 640 - Tck

Note: Typical value refer to VESA STANDARD (*1) Tha+Thb should be less than 1024 Tck.

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Timing Definition

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1688dot

H-Sync

DSPTMG

V-Sync

PTM

112dot

1280dot

38H

Power Consumption

Input power specifications are as follows;

Symbol Parameter Min Typ Max Units Condition

VDD Logic/LCD Drive

Voltage

IDD VDD current 950 1200 [mA]

PDD VDD Power 4.75 6.6 [Watt] Vin=5V, All Black Pattern

VDDrp Allowable

Logic/LCD Drive Ripple Voltage

VDDns Allowable

Logic/LCD Drive Ripple Noise

4.5 5 5.5 [Volt]

100 [mV]

p-p

100 [mV]

p-p

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Power ON/OFF Sequence

Vin power and lamp on/off sequence is as follows. Interface signals are also shown in the chart. Signals from any system shall be Hi-Z state or low level when Vin is off.

1sec

min.

Vin

10%

0 V

Signal

0 V

Lamp On

0 V

Backlight Characteristics

90% 90%

15ms max.

10%10%

250ms

10%

0 min.0 min.

0 min.

Signal for Lamp connector

Pin # Signal Name

1 Lamp High Voltage

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Lamp High Voltage

No Connection

Ground

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Reliability and Lifetime

Monitor Reliability

Demostrated MTTF testing in progress

Backlight Reliability and Lifetime

CCF lamps; 40,000 hour rated lifetime @ 25qC CCF lamp life is defined as time to 50% of initial brightness Backlight end-of-life for this 1745 product is defined as 1000 nits center luminance at 25qC

Typical values indicated for luminance and uniformity are indicative of typical steady state values measured at initial use at 25qC after warm-up to steady state. Actual luminance and uniformity values are directly dependent on the environmental usage profile. Repeated cold temperature start-up can cause accelerated aging of the backlight lamps resulting in reduced luminance and uniformity.

Extended High Temperatures and Solar Loading

Extended operation at the upper temperature extreme or in conjunction with extended direct solar loading can cause permanent mura or localized pixel non-uniformity effects. Other side effects could include latent image and flicker. These effects are not covered under Litemax warranty. Please consult Litemax for further guidance on system design to effectively manage environments requiring extended high temperatures or direct sun-loading. Cooling kit and CEG vandal glass options can effectively address these issues.

Reliability Test

Test Item Test ondition Judgement High temperature/humidity operation

Heat cycle (operation)

1. 60±2qC, RH=60%, 240 hours,

2. Display data is white.

1. 0qC±3qC…1 hour

2. 55qC±3qC…1 hour

Note 1

3. 50 cycles, 4 hours/cycle

4. Display data is white. Note 1

Thermal shock (non-operation)

1. -20qC±3qC…1 hour

2. 60qC±3qC…1 hour

3. 100 cycles, 4 hours/cycle

4. Temperature transition time is within 5 min.

Vibration (non-operation) 5-100Hz, 11.76m/s2, 1 minute/cycle, XYZ direction

Note 1

10 times each direction

ESD (non-operation)

150pF, 150:, ±10kV

Note 1

9 places on a panel (Note 3) 10 times each place at one-second intervals

Dust (non-operation) Sample dust: No.15

Note 1

Hourly 15 seconds stir, 8times repeat

operation 53.3 kPa

Note 1

0qC±3qC…24 hours

Low pressure

non-operation 15 kPa

55qC±3qC…24 hours

Note 1

-20qC±3qC…24 hours

-60qC±3qC…24 hours

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Mechanical Characteristics

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LITEMAX LI3601 inverter

Introduction

LI3601 is a CCFL inverter to operate LITEMAX high brightness (HB) backlights. The inverter has an on-board pulse width modulation (PWM) dimming circuit for extremely wide range luminance adjustment. Over the entire dimming range, there is no noticeable lamp flickering and the uniformity of the backlight is well maintained. When using LI3601 with LITEMAX LCD modules, it is not necessary to synchronize the PWM circuit to vertical sync signal of the LCD.

Dimming Control

The LI3601 accepts a 0V to 5V analog voltage for dimming control. It has a pulse width modulation (PWM) dimming circuit for luminance adjustment. As the dimming voltage (Vd) decreases from +5V, the lamp current waveform is pulse width modulated at a repetition rate high enough to prevent LCD flicker. Within each PWM cycle, the lamps in the backlight are turned fully 'ON' for a fraction of the cycle time. The human eyes, being very slow with respect to the PWM rate, respond to the average light produced over the PWM cycle. As a result, the luminance of the backlight and/or the LCD screen is approximately to the duty cycle of the PWM waveform.

Lamp Current Waveform

t (lamp on)

T (1 PWM cycle) Duty Cycle = t / T

The lamp current waveform with the PWM circuit set at less than 100%

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In general, inverters with PWM dimming have a very wide luminance adjustment range. For most practical cases, the LI3601 inverter can achieve a dimming ratio up to 200:1. Hence, the luminance of the backlight or LCD screen can be adjusted from 100% to 0.5%.

The 0V to 5V dimming voltage can be generated simply by a potentiometer, by a digitally controlled UP/DOWN counter or a digital potentiometer. The inverter provides a regulated +5V supply to power the dimming circuit. However, the maximum current drain from this source should be kept less than 5 mA.

At a Vd input about 0.34V and less, the duty cycle of the PWM waveform is 0% and thus, the lamps are 'OFF'. In order to fully utilize the available dimming voltage, Vd should be biased to about 0.34V and then ramping up to 5.0V.

Electrical Characteristics

The LI3601 inverter operates at 12V DC and can drive up to 12 lamps for a maximum output power about 63 Watts. In addition, the inverter has a regulated +5V output serving as a voltage source for the dimming control circuit.

Electrical Characteristics

Parameters Min Typ Max Units Conditions

Input Voltage (Vin) 11.5 12 12.5 Vdc

Input current (I) 5.25 Adc Vin=12, Vd=5 V

Lamp Starting Voltage (Vst) 1300 Vrms Vin=12, Vd=5 V

Frequency (f) 55 58 60 Khz

ON/OFF Control -OFF 0.2 Vdc

-ON Floating*

Dim ming Voltage(Vd)

@ 100% Duty Cycle 4.9 5 Vdc Max brightness

@ 0% Duty Cycle 0.34 0.36 Vdc Zero brightness

5V Output (+5VOUT) 4.85 5 5.25 Vdc 11.5<Vin<12.5V

5V Output Source Current 5 mA

*Please refer to Application Note AN001 for details of On/Off control and dimming control with an external PWM signal.

Absolute Maximum Rating

Parameters Min Max Units

Inverter Input Voltage (Vin) 11 13 Vdc

Operating Temperature Range 0 50 C

Storage Temperature Range -20 80 C

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Interface Connector

pin1 pin1pin1 pin1

CN1

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J2J1J3J4

pin 1

Input Connector (CN1)

Pin# Function

1 5V Output 2 12V Input 3 12V Input 4 Dimming Control 5 Ground 6 Ground 7 ON/OFF Control 8NC 9 PWMCTRL

10 NC

Output Connector (J2, J3)

PIN# Function

1 Lamp Connection 2 Lamp Connection 3 Lamp Connection 4 NC

Output Connector (J1, J4)

PIN# Function

1 Lamp Connection 2 Lamp Connection 3 NC 4 Lamp Common

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Mechanical

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LITEMAX Electronics Inc. reserves the right to make changes to this document and the product, which it describes without notice. LITEMAX Electronics Inc. also shall not be liable for technical or editorial errors or omissions made herein; nor for incidental o consequential damages resulting from the furnishing, performance, or use of this product. In addition, LITEMAX Electronics Inc. takes no responsibility for damage caused by improper use of this product, which does not meet the conditions for use specified in this specification sheet.

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