Sharp LQ185T1LGN2 Service manual



No. LD –21959B DATE Oct. 6. 2009

Revised Oct. 26. 2009

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RoHS Compliant Component

MODEL No.

TECHNICAL LITERATURE

FOR

TFT - LCD module

1

LQ185T1LGN2

The technical literature is subject to change without notice. So, please contact Sharp or its representative before designing your product based on this literature.

PC- Monitor Business Development Project Team,

Mobile LCD Division II,

MOBILE LIQUID CRYSTAL DISPLAY GROUP,

SHARP CORPORATION

to

1

LQ185T1LGN2

RECORDSOFREVISION

SPEC No. DATE

No. PAGE LD-21959A LD-21959B Oct. 26.2009 1 Change Product name from “LQ185K1Lxxx”

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   

Oct. 6.2009 1st Issue

REVISED

 

SUMMARY NOTE

“LQ185T1LGN2”

2nd Issue

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LD-21959B-1

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These technical literature sheets are the proprietary product of SHARP CORPORATION(”SHARP) and include materials protected under copyright of SHARP. Do not reproduce or cause any third party to reproduce them in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of SHARP.

In case of using the device for applications such as control and safety equipment for transportation(aircraft, trains, automobiles, etc. ), rescue and security equipment and various safety related equipment which require higher reliability and safety, take into consideration that appropriate measures such as fail-safe functions and redundant system design should be taken.

Do not use the device for equipment that requires an extreme level of reliability, such as aerospace applications, telecommunication equipment(trunk lines), nuclear power control equipment and medical or other equipment for life support.

SHARP assumes no responsibility for any damage resulting from the use of the device, which does not comply with the instructions, and the precautions specified in these technical literature sheets.

Contact and consult with a SHARP sales representative for any questions about this device.

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LD-21959B-2

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Table of contents

1. Application .............................................................................................................................................. 3

2. Overview ................................................................................................................................................. 3

3. Mechanical Specifications ...................................................................................................................... 3

4. Input Terminals ....................................................................................................................................... 4

4-1. TFT-LCD panel driving ........................................................................................................................... 4

4-2. LED Back light driving ........................................................................................................................... 5

5. Absolute Maximum Ratings ................................................................................................................... 6

6. Electrical Characteristics ......................................................................................................................... 7

6-1.TFT-LCD panel driving ............................................................................................................................ 7

7. Timing Characteristics of Input Signals ................................................................................................ 10

7-1. Timing characteristics ............................................................................................................................ 10

7-2. Input data signals and display position on the screen ............................................................................ 11

8. Input Signals, Basic Display Colors and Gray Scale of Each Color ..................................................... 12

9. Optical Characteristics .......................................................................................................................... 13

10. Display Quality ..................................................................................................................................... 15

11. Handling Precautions ............................................................................................................................ 16

12. Packing form ......................................................................................................................................... 16

13. RoHS Regulations ................................................................................................................................. 16

14. Reliability Test Condition ..................................................................................................................... 17

Fig.1 Outline Dimensions.......................................................................................................................... 18

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LD-21959B-3

Parameter

Specifications

Unit

Display size

469.9 (18.5

") Diagonal

mm

Active area

409.8

(H) x

230.4

(V) mm

1366

(H) x 768(V)

pixel

(1 pixel = R+G+B dots)

Aspect ratio

16

: 9

Pixel pitch

0.300

(H) x 0.300 (V) mm

Pixel configuration

R,G,B vertical stripe

Display mode

Normally white

Surface treatment

Anti-g

lare

, Haze=25%,

hard-coating

(3H)

Parameter

Min. Typ. Max.

Unit

Width

429.87

430.37

430.87

mm

Height

254.1

254.6

255.1

mm

Depth

15.34

15.84

1

6.34 mm

Mass

- - 2100 g



1. Application

This technical literature applies to a color TFT-LCD module, LQ185T1LGN2.

2. Overview

This module is a color active matrix LCD module incorporating amorphous silicon TFT (Thin Film Transistor). It is composed of a color TFT-LCD panel, driver ICs, control circuit and power supply circuit and a backlight unit. Graphics and texts can be displayed on a 1366 x 3 x 768 dots panel with 16,777,216 colors by using LVDS (Low Voltage Differential Signaling) to interface and supplying +5V DC supply voltage for TFT-LCD panel driving and supply voltage for backlight.

In this TFT-LCD panel , color filters of excellent color performance and LED backlights of high brightness

are incorporated to realize brighter and clearer pictures, making this model optimum for use in multi-media applications. Optimum viewing direction is 6 o'clock.

1

3. Mechanical Specifications

Pixel format

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Unit outline dimensions

[Note 1]

[Note 1]Outline dimensions is shown in Fig.1



Pin No.

Symbol

Function

Remark

1 NC No Connection, this pin should be open

[Note

4]

2 NC No Connection, this pin should be open

[Note

4]

3 NC No Conn

ection, this pin should be open

[Note

4]

4 GND

5 RxIN0

-

Receiver signal of LVDS CH0 (

-)

[Note

2] 6

RxIN0+

Receiver signal of LVDS CH0 (+)

[Note

2]

7 GND

8 RxIN1

-

Receiver signal of LVDS CH1 (

-)

[Note

2]

9 RxIN1+

Receiver signal of LVDS CH

1 (+)

[Note

2]

10 GND

11 RxIN2

-

Receiver signal of LVDS CH2 (

-)

[Note

2]

12 RxIN2+

Receiver signal of LVDS CH2 (+)

[Note

2]

13 GND

14

CK IN

-

Receiver signal of LVDS CLK (

-)

[Note

2]

15 CK IN+

Receiver signal of LVDS CLK (+)

[Note

2]

16 GND

17 RxIN3

-

Receiver signal of LVDS CH3 (

-)

[Note

2]

18 RxIN3+

Receiver signal of LVDS CH3 (+)

[Note

2]

19 GND

20 NC No Connection, this pin should be open

[Note

4]

21 NC No Connection, this pin should be open

[Note

4] 22 NC

No Connection, t

his pin should be open

[Note

4]

23 GND

24 GND

25 GND

26

Vcc

+5.0V Power Supply

27 Vcc

+5.0V Power Supply

28 Vcc

+5.0V Power Supply

29 Vcc

+5.0V Power Supply

30 Vcc

+5.0V Power Supply

4. Input Terminals 4-1. TFT-LCD panel driving

CN1 (LVDS signals and +5.0V DC power supply)

Using connector : GS23302-0011R-7F (Foxconn) or equivalent.

Corresponding connector : FI-XB30SRL-HF11 (JAE) [Note 1]

LD-21959B-4

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[Note 1] Sharp is not responsible to its product quality, if the user applies a connector not corresponding

to the above model. [Note 2] Relation between RxINi(i=0,1,2) and actual data is shown in following section (4-3). [Note 3] The shielding case is connected with signal GND. [Note 4] Please use NC by OPEN. NC terminal is not connected with the internal circuit.



Pin No

Symbol

Description

1 VIH Lamp high voltage input (Cable Color: Pink)

2 VIL Lamp low voltage input (Cable Color: White)

3 VIH Lamp high voltage input (Cable Color: Blue)

4 VIL Lamp low voltage inp

ut (Cable Color: Black)

4-2. CCFL Back light driving

CCFL Connector Pin Assignment

Using connector : 3500IHS-02L (YEONHO) Corresponding FFC specification: FI-XB30SRL-HF11 (JAE)

Temperature＝80oC, Voltage=60V, Pin No.=10, 0.5Pitch, PET, HF

LD-21959B-5

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LVDS Connector (Rear view of LCD)

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Ratings

Min. Max.

Input voltage

VI

Ta=25

o

C -

0.3 +4.3 V [Note 1]

+5V supply voltage

Vcc Ta=25

o

C -

0.3 +6.0 V

CCFL

supply voltage

V

Ta=25

o

C (TBD

) (TBD)

V

CCFL Lamp

Current

ICFL Ta=25

o

C 2 8 mA

Storage temperature

Tstg

− -20

+60

oC

Operating temperature (Ambient)

Topa

− 0 +50

oC

5. Absolute Maximum Ratings

LD-21959B-6

Parameter Symbol Condition

Cfl

[Note 1] LVDS signals [Note 2] The relative humidity must not exceed 90% non-condensing at temperatures of 40°C or less.

At temperatures greater than 40°C, the wet bulb temperature must not exceed 39°C.

Unit Remark

[Note 3]

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

Parameter

Symbol

Min. Typ. Max.

Unit Remark

Supply voltage

Vcc +

4.5 +

5.0 +

5.5 V [Note 2]

Permissive inp

ut ripple voltage

VRP - -

150 mV

Vcc = +5.5V

Current dissipation

Icc - (TBD)

(TBD)

mA

[Note 3]

Rush Current

Irush

-

1.6 3.0 A [Note

4]

Input voltage range

VI

(TBD)

V

LVDS signals

Differential input

High

VTH

- - +100

mV

V

= +1.2V

thres

hold voltage

Low

VTL

–

100 - - mV [Note 1]

Input current (High)

IOH - -

(TBD)

μA

VI = +2.4V Vcc = +3.6V

Input current (Low)

IOL - -

(TBD)

μA

VI = 0V Vcc = 3.6V

Terminal resistor

RT -

100 -

Ω

Differential input

Symbol

Min. Typ. Max.

Unit Remark

t1 0.1 - 10 ms

t2 0 30 50 ms

t3 0 20 50 ms

t4 0.1 - - ms

t5 1000 - - ms t6 200

250 - ms *1 t7 100 250 - ms *1

t1 t2

t6

0.9Vcc

Vcc

Valid



0.1Vcc

t3 t5

OFF

t7

t4

6. Electrical Characteristics

6-1.TFT-LCD panel driving

Ta＝+25 oC

[Note 1] VCM : Common mode voltage of LVDS driver.

[Note 2] On-off conditions for supply voltage

LD-21959B-7

P-P

CM



Signal (LVDS Interface)

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Backlight

Backlight ON (LED)

OFF

(Note 2-2) Vcc-dip conditions

*1 : As for the power sequence for backlight, it is recommended to apply above

mentioned input timing. If the backlight is lit on and off at a timing other than shown above, displaying image may get disturbed. This is due to variation of output signal from timing generator when LVDS signal is changed from on to off or vice versa, but has no harm to the module itself.

(Note 2-1) Do not keep the interface signal high-impedance or unusual signal when power is on.

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LD-21959B-8

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[Note 3] Typical current situation : 16-gray-bar pattern. Vcc=+5.0V

Maximum current situation : Vcc=+5.0V

[Note 4] Test condition :

(1) VDD = 5 V, VDD rising time = 470 μs ± 10% (2) Pattern: Mosaic pattern

(3) Test circuit



R G B  G S 0 

R G B  G S 4 

R G B  G S 8 

. . . .

R GB   G S5 6 

R GB  G S6 0 

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[Note 5] LVDS signal definition

VIN+ = Positive differential DATA & CLK Input VIN- = Negative differential DATA & CLK Input VID = VIN+ – VIN- ,

ΔVCM =｜VCM+–VCM-｜, ΔVID =｜VID+–VID-｜,

VID+ =｜VIH+–VIH-｜, VID- =｜VIL+–VIL-｜, VCM = (VIN+ +VIN-)/2,

VCM+ = (VIH+ +VIH-)/2, VCM- = (VIL+ +VIL-)/2,

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Parameter

Symbol

Min. Typ.

Max.

Unit Remark

Lamp

voltage

VL

630 700 770 V

rms [Note 1]

Lamp Operation Current

IL 2

7.5 8 mA

rms [Note 1,2

,3]

Lamp Starting Voltage

VLstart

1300

- -

Vrms

T=25

o

C [Note 4]

1700

- - T=0oC [Note 4]

Frequency

F 40 - 60

kHz [Note 1]

Lamp life time

-

50,000

- -

Hour

[Note

5]

6-2. Backlight driving The backlight system is using 2 CCFLs.

(Ta=+25 oC)

Note: The waveform of the voltage output of inverter must be area-symmetric and the design of the

inverter must have specifications for the modularized lamp. The performance of the Backlight, such as lifetime or brightness, is greatly influenced by the characteristics of the DC-AC inverter for the lamp. All the parameters of an inverter should be carefully designed to avoid producing too much current leakage from high voltage output of the inverter. When designing or ordering the inverter please make sure that a poor lighting caused by the mismatch of the Backlight and the inverter (miss-lighting, flicker, etc.) never occurs. If the above situation is confirmed, the module should be operated in the same

manners when it is installed in your instrument. Note 1: Specified values are for a single lamp. Note 2: Operating voltage is measured at the condition of Ta = 25±2°C. Note 3: The degree of unbalance: less than 10%

The ratio of wave height: less than 2 ±10%

LD-21959B-9

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The degree of unbalance = |Ip-I-p| /Irms*100(%)

The ratio of wave height = Ip (or I-p)/Irms

Lamp should be completely turned on.



Parameter

Symbol

Min. Typ. Max.

Unit Remark

Clock

Frequency

1/Tc

62.9 75.4 95.6 MHz

[Note 1]

Period

Tc

10.5 13.2 15.9 ns

Horizontal period

TH

1400

1560

1800

clock

Horizontal period (High)

THd 1366

1366

clock

H-Blank (TH

-

THd)

THb 40 194 434 clock

Vertical period

TV

786 806 900 Line

Vertical period (High)

TVd 768 768 768 line

V-

Blank (TV

-

TVd)

TVb 18 38 132 line

Frequency

fV 50 60 76 Hz

1 2

ENAB

DATA

ENAB

7. Timing Characteristics of Input Signals

7-1. Timing characteristics

Vcc=+3.0V〜+3.6V，Ta＝ 0

Data Enable Signal

[Note 1] Because this module is operated by DE only mode, Hsync and Vsync input signals should be set

to low Logic level or ground. Otherwise, this module would operate abnormally.

.

o

C〜+50

LD-21959B-10

o

C

(R,G,B)

1366

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Tc

TH

THd

1 2 1366

767

TVd

TV

768



7-2. Input data signals and display position on the screen



R1 G1 B1 R2 G2 B2



(1,1) (1,2)

LD-21959B-11

1・1 1・2 1・3 2・1 2・2 3・1

R G B

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768･1

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Display position of input data(V・H)

1･1366

768･1366



Data signal

Colors &

Gray

Gray scale

Scale

Black

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Blue

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

Green

0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

Cyan

0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Red

1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Magenta

1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

Yellow

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

White

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Black

0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



1

1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Darker

2

0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0





  





  

Brighter

253

1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



254

0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Red

255

1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Black

0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



1

0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Darker

2

0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0





  





  

Brighter

253

0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0



254

0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

Green

255

0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

Black

0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0

Darker

2

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0





  





  

Brighter

253

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1



254

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1

Blue

255

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

8. Input Signals, Basic Display Colors and Gray Scale of Each Color

R0 R1 R2 R3 R4 R5 R6 R7 G0 G1 G2 G3 G4 G5 G6 G7 B0 B1 B2 B3 B4 B5 B6 B7

−

Basic Color Gray Scale of Red Gray Scale of Green Gray Scale of Blue

−

LD-21959B-12

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0 : Low level voltage, 1 : High level voltage

Each basic color can be displayed in 256 gray scales from 8 bit data signals. According to the combination of total 24 bit data signals, the 16,777,216-color display can be achieved on the screen.



Parameter

Symbol

Condition

Min. Typ. Max.

Unit Remark

Viewing

2

Centerofthescreen

(θ=0°

)



9. Optical Characteristics

LD-21959B-13

Ta=+25 oC, Vcc=+3.3V

Horizontal θ21, θ22

angle

range

Chromaticity of white

Vertical θ11, θ12 70 80 - Deg.

Contrast ratio CRn θ=0° 700 1000

τr

Response time

τr +τd - 5 10 ms

Wx Wy 0.299 0.329 0.359

Rx 0.610 0.640 0.670 Ry 0.319 0.349 0.379 Gx 0.254 0.284 0.314 Gy 0.587 0.617 0.647 Bx 0.112 0.142 0.172 By 0.037 0.067 0.097

CR≧10

θ=0°

75 85 - Deg.

- 1.5 4 ms

0.283 0.313 0.343

[Note 1,2,3]

- [Note 1,3,5]

[Note 1,4,5] τd - 3.5 6 ms

[Note 1,5]

Luminance of white

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White Uniformity δW (0.70) 0.75

Cross Talk Ct - - 2 % [Note 7]

The measurement shall be executed 30 minutes after lighting at rating. Condition : (D The optical characteristics shall be measured in a dark room or equivalent.

[Note 1] Optical Characteristics Measurements

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YLI θ=0° (250) 300 - cd/m

- [Note 1,6]

BM-5A

400mm

Field=２°

(TOPCON)

PWM

[Note 1,5]

=100%)

LCDPanel



[Note 2] Definitions of viewing angle range:

[Note 3] Definition of contrast ratio:

The contrast ratio is defined as the following.

Contrast Ratio (CR) ＝

Luminance (brightness) with all pixels white Luminance (brightness) with all pixels black

LD-21959B-14

[Note 4] Definition of response time:

The response time is defined as the following figure and shall be measured by switching the input signal for "black" and "white" .

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[Note 5] This shall be measured at center of the screen.

[Note 6] Definition of white uniformity:

White uniformity is defined as the

following with nine measurements (P1〜P9).

Minimum Luminance of nine points (Brightness) δw =

Maxmum Luminance of nine points (Brightness)



[Note 7] Definition of the cross talk

l LA-LA’ l / LA x 100%= 2% max., LA and LA’ are brightness at location A and A’

LD-21959B-15

l LB-LB’ l / LB x 100%= 2% max., LB and LB’ are brightness at location B and B’

10. Display Quality

The display quality of the color TFT-LCD module shall be in compliance with the Incoming Inspection Standard.

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

LD-21959B-16



11. Handling Precautions

a) Be sure to turn off the power supply when inserting or disconnecting the cable. b) Be sure to design the cabinet so that the module can be installed without any extra stress such as warp or twist. c) Since the front polarizer is easily damaged, pay attention not to scratch it.

Blow away dust on the polarizer with antistatic N2 blow. It is undesirable to wipe off because a polarizer is sensitive.

It is recommended to peel off softly using the adhesive tape when soil or finger oil is stuck to the polarizer.

When unavoidable, wipe off carefully with a cloth for wiping lenses. d) Wipe off water drop immediately. Long contact with water may cause discoloration or spots. e) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. f) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. Handle with care. g) Since CMOS LSI is used in this module, take care of static electricity and injure the human earth when handling.

Observe all other precautionary requirements in handling components.

 h) Since there is a circuit board in the module back, stress is not added at the time of a design assembly.

Please make it like. If stress is added, there is a possibility that circuit parts may be damaged.  i) Protection film is attached to the module surface to prevent it from being scratched . Peel the film off slowly , just before the use, with strict attention to electrostatic charges.

Blow off 'dust' on the polarizer by using an ionized nitrogen. j) Do not expose the LCD module to a direct sunlight, for a long period of time to protect the module from

the ultra violet ray.

k) When handling LCD modules and assembling them into cabinets, please avoid that long-terms storage in

the environment of oxidization or deoxidization gas and the use of such materials as reagent, solvent,

adhesive, resin, etc. which generate these gasses, may cause corrosion and discoloration of the modules.

 l) Liquid crystal contained in the panel may leak if the LCD is broken. Rinse it as soon as possible if it gets

inside your eye or mouth by mistake.

 m) Notice : Never dismantle the module , because it will cause failure.

Please don't remove the fixed tape, insulating tape etc that was pasted on the original module.

(Except for protection film of the panel and the crepe tape (yellow tape) of fixing lamp

cable temporarily.)  n) Be careful when using it for long time with fixed pattern display as it may cause afterimage. (Please use a screen saver etc., in order to avoid an afterimage.)  o) Please handle carefully not to charge excessive stress onto the back of the module.Excessive stress may cause

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unrepairable damage to the module.

12. Packing form

TBD

13. RoHS Regulations

This LCD module is compliant with RoHS Directive.



High temperature storage

60°C, 240Hrs

Note 1

Note 2

Low temperature storage

-20°C, 240Hrs

Note 1

Note 2

High temperature &

40°C, 90%RH, 240Hrs

High temperature operation

50°C,

240Hrs

Note 1

Note 2

Low temperature operation

0°C, 240Hrs

Note 1

Note 2

Thermal Shock

-

20°C~60°C

Contact:+/

-

8kV, 150pF(330ohms),

Vibration level : 1.5G

Shock level : 50G, 11ms

MTBF Demonstration

50,000 hours with confidence level 90%

Note 1

Note 3

14. Reliability Test Condition

Test Item Test Condition Judgment Remark

LD-21959B-17

high humidity operation

(non-operation)

Electrostatic discharge (ESD) (non-operation)

Vibration (non-operation)

(No condensation)

Note 1 Note 2

1Hr, 1Hr, 100cycles

25 times/1 point, 1 time/1 sec

Note 1 Note 2

Air discharge:+/-15kV, 150pF(330ohms), 25times/1 point, 1 time/1 sec

Bandwidth : 10-300Hz Waveform : sine wave,

Note 1 Note 2

sweep rate : 10min 30 min for each direction X, Y, Z (1.5 Hrs in total)

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Mechanical Shock (non-operation)

Note1: Pass: Normal display image with no obvious non-uniformity and no line defect.

Partial transformation of the module parts should be ignored.

Fail: No display image, obvious non-uniformity, or line defects. Note2: Evaluation should be tested after storage at room temperature for two hours. Note3: The MTBF calculation is based on the assumption that the failure rate distribution meets the

Exponential Model (CCFL excluded).

Waveform : Half sine wave

Note 1 Note 2

Direction : ±X, ±Y, ±Z One time each direction



Fig. 1 Outline Dimensions Front side

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LD-21959B-18



Rear side

Pin 1

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LD-21959B-19

