AUO T420HW04 V5 Specification

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Document Version: 2.0

Date:2009/5/19

Product Functional Specification

42” Full-HD Color TFT-LCD Module

Model Name: T420HW04 V5

( ) Preliminary Specification

(*) Final Specification

Note : This specification is subject to change without notice.

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COVER

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Contents

ITEM No

CONTENTS

RECORD OF REVISIONS

GENERAL DESCRIPTION 1

ABSOLUTE MAXIMUM RATINGS 2

ELECTRICAL SPECIFICATIONS 3

ELECTRICAL CHARACTREISTICS 3-1

INTERFACE CONNECTIONS 3-2

SIGNAL TIMING SPECIFICATIONS 3-3

SIGNAL TIMING WAVEFORMS 3-4

COLOR INPUT DATA REFERNECE 3-5

POWER SEQUENCE 3-6

RELIABILITY 6

INTERNATIONAL STANDARDS

SAFETY 7-1

EMC 7-2

PACKING

PRECAUTIONS 9

OPTICAL SPECIFICATIONS 4

MECHANICAL CHARACTERISTICS 5

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Version Date Page Old Description New Description Remark

1.0 2009/2/25 Preliminary spec first release

1.1 2009/4/14 7

12 Modify vertical frequency range

15 Power Sequence t4 Min.100ms Power Sequence t4 Min.100ms

Rising time = 470

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Record of Revision

s Rising time = 400Ӵs

23 Drop (With carton) Height

: 46cm

25-27

1.2 2009/4/28 5 BLU Brightness Control Voltage

3pcs panel in one carton package 7pcs panel in one carton package

Max 3.6 Volt

10 ON/OFF Control Voltage MAX 3.3

External PWM Control Voltage

MAX : 3.3V

Internal PWM Control Voltage

MAX : 3.3V

Drop (With carton) Height

:30.5cm

BLU Brightness Control Voltage

Max 5.5 Volt

ON/OFF Control Voltage MAX 5 V

External PWM Control Voltage

MAX : 5V

Internal PWM Control Voltage

MAX : 5V

2.0 2009/5/19 Final spec first release

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1. General Description

This specification applies to the 42 inch Color TFT-LCD Module T420HW04 V5. This LCD module has

a TFT active matrix type liquid crystal panel 1920x1080 pixels, and diagonal size of 42 inch. This

module supports 1920x1080 Full-HD mode (Non-interlace).

Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.

Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each

dot.

The T420HW04 V5 has been designed to apply the 8-bit 2 channel LVDS interface method. It is

intended to support displays where high brightness, wide viewing angle, high color saturation, and

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high color depth.

General Information

Items Specification Unit Note

Active Screen Size 42.02 inches

Display Area 930.24(H) x 523.26(V) mm

Outline Dimension 983.0(H) x 576.0(V) x 52.7(D) mm With inverter

Driver Element a-Si TFT active matrix

Display Colors 16.7M Colors

Number of Pixels 1920 x 1080 Pixel

Pixel Pitch 0.4845 mm

Pixel Arrangement RGB vertical stripe

Display Mode Normally Black

Lamp quantity, type 12pcs, Straight type pcs

Surface Treatment Anti-Glare coating (Haze 11%)

Hard coating (3H)

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2. Absolute Maximum Ratings

The following are maximum values which, if exceeded, may cause faulty operation or damage to the

unit.

Item Symbol Min Max Unit Note

Power Supply Input Voltage VDD -0.3 14 [Volt] 1

Logic Input Voltage Vin -0.3 3.6 [Volt] 1

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BLU Input Voltage V

BLU Brightness Control Voltage BLON -0.3 5.5 [Volt] 1

Ambient Operating

Temperature

Ambient Operating Humidity HOP 10 80 [%RH] 2

Storage Temperature TST -20 +60 [oC] 2

Storage Humidity HST 10 80 [%RH] 2

Shock (non-operation) - 50 G 3

Vibration (non-operation) - 1.5 G 4

Thermal shock -20 60 C 5

Note 1 : Duration = 50msec

Note 2 : Maximum Wet-Bulb should be 50

Note 3 : Half sine wave, shock level : 50G(11ms), direction : ±x, ±y, ±z (one time each direction)

DDB

-0.3 26.4 [Volt] 1

TOP 0 +50 [oC] 2

and No condensation.

Note 4 : Wave form : Random, vibration level : 1.5G RMS, Bandwidth : 10~300Hz

Duration : X,Y,Z 30min (one time each direction)

Note 5 : -20C/1hr ~ 60C/1hr, 100 cycles

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3. Electrical Specification

The T420HW04 requires two power inputs. One is employed to power the LCD electronics and to drive

the TFT array and liquid crystal. The second input, which powers the CCFL, is typically generated by

an inverter.

3-1 Electrical Characteristics

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Values Parameter Symbol

Min Typ Max

LCD:

Power Supply Input Voltage Vdd 10.8 12 13.2 Vdc

Power Supply Input Current Idd - 0.64 1 A 1

Power Consumption Pc - 7.68 12 Watt 1

Inrush Current I

LVDS

Interface

Differential Input

High Threshold

Voltage

Differential Input

Low Threshold

Voltage

Common Input

Voltage

Input High

- - 4 A 5

RUSH

+100 mV

-100 mV

CIM

0.6 1.2 1.8 V

VIH

2.0 3.3 Vdc CMOS

Unit Notes

Interface

Backlight Power Consumption

Life Time 50000 Hours 3

The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced

by the characteristics of the DC-AC Inverter. So all the parameters of an inverter should be

carefully designed so as not to produce too much leakage current from high-voltage output of the

inverter. When you design or order the inverter, please make sure unwanted lighting caused by

the mismatch of the lamp and the inverter (no lighting, flicker, etc) never occurs. When you

confirm it, the LCD Assembly should be operated in the same condition as installed in your

Threshold Voltage

Input Low

Threshold Voltage

(High)

(Low)

114 120 126 Watt 2

0 0.8 Vdc

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Do not attach a conducting tape to lamp connecting wire. If the lamp wire attach to conducting

tape, TFT-LCD Module have a low luminance and the inverter has abnormal action because

leakage current occurs between lamp wire and conducting tape.

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The relative humidity must not exceed 80% non-condensing at temperatures of 40

temperatures greater than 40

at low temperatures, the brightness of CCFL will drop and the lifetime of CCFL will be reduced.

Note :

1. Vdd=12.0V, fv=60Hz, f

pattern

2. The Backlight power consumption shown above does include loss of external inverter at 25

The used lamp current is the lamp typical current

3. The life is determined as the time at which luminance of the lamp is 50% compared to that of

initial value at the typical lamp current on condition of continuous operating at 25

4. VCIM = 1.2V

VTH

VCIM

VTL

, the wet bulb temperature must not exceed 39к. When operate

CLK

=80 Mhz , 25к, Vdd Duration time= 400 sμ, Test pattern : white

or less. At

2к

Figure : LVDS Differential Voltage

5. Measurement Condition: Rising time = 400

0.9 Vdd

Vdd

GND

0.1 Vdd

400Ӵs

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3-2 Interface Connections

LCD connector:ʳP-TWO 187059-5122 which is compatible FI-RE51S-HF (JAE)

No Symbol Description

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No Symbol Description

1 GND Ground

2 NC No connection

3 NC No connection

4 NC No connection

5 NC No connection

6 Reserved

LVDS order (Low/Open: NS,

7 LVDS SEL

High: JEIDA)

8 NC No connection

9 Reserved

10 Reserved

11 GND Ground

12 RO 0N FIRST CHANNEL 0-

13 RO 0P FIRST CHANNEL 0+

14 RO 1N FIRST CHANNEL 1-

15 RO 1P FIRST CHANNEL 1+

27 GND Ground

28 RE0N SECOND CHANNEL 0-

29 RE0P SECOND CHANNEL 0+

30 RE1N SECOND CHANNEL 1-

31 RE1P SECOND CHANNEL 1+

32 RE 2N SECOND CHANNEL 2-

33 RE 2P SECOND CHANNEL 2+

34 GND Ground

35 RECLKN SECOND CLOCK CHANNEL C-

36 RECLKP SECOND CLOCK CHANNEL C+

37 GND Ground

38 RE3N SECOND CHANNEL 3-

39 RE3P SECOND CHANNEL 3+

40 NC No connection

41 NC No connection

16 RO 2N FIRST CHANNEL 2-

17 RO 2P FIRST CHANNEL 2+

18 GND Ground

19 ROCLKN FIRST CLOCK CHANNEL C-

20 ROCLKP FIRST CLOCK CHANNEL C+ ʳ46 GND Ground

21 GND Ground

22 RO 3N FIRST CHANNEL 3-

23 RO 3P FIRST CHANNEL 3+

24 NC No connection

25 NC No connection

26 GND Ground

Note: 1. All GND (ground) pin should be connected together to the LCD module’s metal frame.

2. All V

( power input ) pins should be connected.

LCD

42 GND Ground

43 GND Ground

44 GND Ground

45 GND Ground

47 NC No connection

48 VLCD Power Supply +12V

49 VLCD Power Supply +12V

50 VLCD Power Supply +12V

51 VLCD Power Supply +12V

- - -

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LVDS Option = HighÎÎÎÎJEIDA

Previous Cycle Current Cycle Next Cycle

Clock

RIN0+

RIN0-

RIN1+

RIN1-

RIN2+

RIN2-

RIN3+

RIN3-

LVDS Option = Low/OpenÎÎÎÎNS

R2R7 G2G2R2R3 R4R5R6 R3

G3B2 B3B3G3G4 G5G6G6 G4

B4NA DEDEB4B5 B6B7NA B5

R0B1 NANAR0R1 G0G1B0 R1

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Backlight Connector Pin Configuration

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1. Electrical specification

No ITEM SYMBOL CONDITION MIN TYP MAX UNIT Note

1 Input Voltage V

2 Input Current I

--- 21.6 24.0 26.4 VDC

DDB

=24V

DDB

4.75 5 5.25 ADC

100% Brightness

=24V

3 Input Power P

DDB

114 120 126 W

100% Brightness

=24V

4 Input inrush current I

RUSH

DDB

--- --- 7.9 ADC

100% Brightness

5 Output Frequency FBL V

ON/OFF Control

Voltage

BLON

ON V

OFF V

=24V 42 44 46 kHz

DDB

=24V 2.0 --- 5 VDC

DDB

=24V 0.0 --- 0.8 VDC

DDB

ON/OFF Control

BLON

=24V 0 --- 2 mADC

DDB

Current

External PWM

Control Voltage

PWM

MAX --- 2.0 --- 5 VDC

MIN --- 0 --- 0.8 V

External PWM

PWM

Control Current

External PWM Duty

Ratio

External PWM

Frequency

Internal PWM

Control Voltage

* Note : At

ˏʳ

20% dimming ratio, AUO would not guarantee display performance & start at High

ˏʳˏʳ

and Low Temperature condition.

MAX PWM=100% 0 --- 2 mADC

MIN PWM=30% 0 --- 2 mA

--- 10* --- 100 %

PWM

--- 140 180 240 Hz

PWM

=24V 0 --- 5 VDC

DDB

Ta=2 55к, Turn on for 45minutesα

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2. Input specification

Connector 1: S14B-PH-SM3-TB(JST) or CI0114M1HR0-NH(Cvilux)

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1 VDDB (Main Power) DV input 24.0 VDC

2 VDDB (Main Power) DV input 24.0 VDC

3 VDDB (Main Power) DV input 24.0 VDC

4 VDDB (Main Power) DV input 24.0 VDC

5 VDDB (Main Power) DV input 24.0 VDC

6 GND Ground

7 GND Ground

8 GND Ground

9 GND Ground

10 GND Ground

11 Reserved Please leave it open

12 VBLON (Enable Pin)

13 VDIM

Symbol Description

BL On/Off control signal High/Open: On, Low: Off

(Low=0~ 0.8V, High=2.0~5V)

Internal PWM (3.3V,100% duty)/open for 100% luminance,

0V : 10% duty < NC ; when use External PWM >

14 PDIM

External PWM (AC 0~3.3V, Duty: 10%~100%) < NC ; when use Internal PWM >

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3-3 Signal Timing Specifications

This is the signal timing required at the input of the User connector. All of the interface signal timing

should be satisfied with the following specifications for it’s proper operation.

Timing Table (DE only Mode)

Vertical Frequency Range A (60Hz)

Signal Item Symbol Min Type Max Unit

Period Tv 1090 1125ʳ1480 Th

Active Tdisp (v) 1080 Th

Vertical Section

Horizontal Section

Clock

Vertical Frequency Frequency Vs 47 60 63 Hz

Blanking Tblk (v) 10 45

Period Th 1030 1100ʳ1325 Tclk

Active Tdisp (h) 960 Tclk

Blanking Tblk (h) 70 140

Frequency 1/Tclk 50 74.25

400 Th

365 Tclk

82 MHz

Horizontal Frequency Frequency Hs 60 67.5 73 KHz

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3-4 Signal Timing Waveforms

(even)

RGB Data

(odd)

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CLK

RGB

Data

M-6

M-4

M-2

Pixel

Invalid Data

Pixel

M-7

M-5

M-3

M-1

Pixel

Invalid Data

Pixel

Tclk

Tdisp(h) Tblk(h)

Line

Invalid Data Invalid Data

Line

Tdisp(v)Tblk(v)

M-4

M-2

Pixel

Invalid Data

Pixel

M-5

M-3

M-1

Pixel

Line

Invalid Data

Pixel

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3-5 Color Input Data Reference

The brightness of each primary color (red, green and blue) is based on the 8 bit gray scale data input

for the color; the higher the binary input, the brighter the color. The table below provides a reference for

color versus data input.

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COLOR DATA REFERENCE

Color

Basic

Color

RED

Input Color Data

RED

MSB LSB

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

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

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

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

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

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

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

RED(000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

RED(001) 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

----

RED(254) 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

MSB LSB

GREEN

BLUE

MSB LSB

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

GREEN

BLUE

GREEN(000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

GREEN(001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0

----

GREEN(254) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 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

BLUE(000) 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(001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

-------

BLUE(254) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0

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

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3-6 Power Sequence

1. Power sequence of panel

Parameter

Min. Typ. Max.

Values

Units

t1 0.4 - 30 ms

t2 0.1 - 50 ms

t3 300 - - ms

t4 10 - - ms

t5 0.1 - 50 ms

t6 - 300 ms

t7 500 - - ms

Apply the lamp voltage within the LCD operating range. When the backlight turns on before the LCD

operation or the LCD turns off before the backlight turns off, the display may momentarily become

abnormal.

Caution : The above on/off sequence should be applied to avoid abnormal function in the display. In

case of handling, make sure to turn off the power when you plug the cable into the input connector or

pull the cable out of the connector.

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2. Power sequence of inverter

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Values Parameter

Min. Typ. Max.

T1 20 - - ms

T2 500 - - ms

T3 250 - - ms

T4 0 - - ms

T5 1 - - ms

T6 10 ms

Units

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4. Optical Specification

Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 60

minutes in a dark environment at 25

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. The values specified are at an approximate distance 50cm

from the LCD surface at a viewing angle of

and Ӱequal to 0.

SR3 or equivalent

Fig.4-1 Optical measurement equipment and method

Parameter

Symbol

Min. Typ. Max.

Values

Contrast Ratio CR 4000 5000 1

Surface Luminance, white LWH 360 450

Luminance Variation

Response Time (Average)

WHITE

5p 1.3 3

6.5 ms 4,5 (Gray to Gray)

Units Notes

cd/

Color Coordinates

RED RX 0.640

0.330

GREEN GX 0.290

0.600

Typ.-0.03

Typ.+0.03

BLUE BX 0.150

0.060

WHITE WX 0.280

0.290

Viewing Angle Contrast Ratio>10

x axis, right(ӽ=0)

x axis, left(ӽ=180)

y axis, up(ӽ=90)

y axis, down (

ӽ=0

)

Ӱ Ӱ Ӱ

89 Degree 6

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Note:

1. Contrast Ratio (CR) is defined mathematically as:

2. Surface luminance is luminance value at point 1 across the LCD surface 50cm from the surface with

Contrast ratio (CR)=

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Brightness on the "white" state Brightness on the "black" state

all pixels displaying white. From more information see Fig. 4-2. When V

WH=Lon1

, Where L

is the luminance with all pixels displaying white at center 1 location.

on1

3V/4

V/2

V/4

Fig.4-2 Optical measurement point

3. The variation in surface luminance,

WHITE(5P)=Maximum(Lon1, Lon2,…,Lon5)/Minimum(Lon1, Lon2,…Lon5)

is defined under 100% brightness as:

WHITE

DDB

= 24V, I

H/2 H/4

DDB

3H/4

= 6.4A.

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4. Response Time:

(a) G-to-G: average response time among brightness of 0%, 25%, 50%, 75% &100%.

0% 25% 50% 75% 100%

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25%

50%

75%

100%

tr: 0%Æ25% tr: 0%Æ50% tr: 0%Æ75% tr: 0%Æ100%

tf: 25%Æ0% tr: 25%Æ50% tr: 25%Æ75% tr: 25%Æ100%

tf: 50%Æ0% tf: 50%Æ25% tr: 50%Æ75% tr: 50%Æ100%

tf: 75%Æ0% tf: 75%Æ25% tf: 75%Æ50% tr: 75%Æ100%

tf: 100%Æ0% tf: 100%Æ25% tf: 100%Æ50% tf: 100%Æ75%

5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are determined

for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the

LCD surface. For more information see Fig. 4-3. (Optical measurement by SR3)

Fig.4-3 Viewing Angle Definition

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5. Mechanical Characteristics

The contents provide general mechanical characteristics for the model T420HW04 V5. In addition the

figures in the next page are detailed mechanical drawing of the LCD.

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Outline Dimension

Active Display Area

Weight 13600 (typ), 15000g (Max.)

Surface Treatment Anti-Glare coating (Haze 11%)

Horizontal (typ.) 983.0mm

Vertical (typ.) 576.0mm

Depth (typ.) 52.7mm (with inverter)

Horizontal (typ.) 939.0mm Bezel Area

Vertical (typ.) 531.0mm

Horizontal 930.24mm

Vertical 523.26mm

Hard coating (3H)

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2D drawing

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6. Reliability

Panel condition in RA test

Brightness: 500nits

No Test Item Condition

1 High temperature storage test

2 Low temperature storage test

3 High temperature operation test

4 Low temperature operation test

5 Vibration test

(non-operating)

6 Shock test

(non-operating)

7 Vibration test

(with carton)

8 Drop test

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Ta=6 0

Ta= - 2 0

Ta=5 0

Ta=- 5

Wave form: random Vibration level: 1.5G RMS Bandwidth: 10-300Hz, Duration: X, Y, Z 30min One time each direction Shock level: 50G Waveform: half since wave, 11ms Direction: ±X, ±Y, ±Z One time each direction Wave form: random Vibration level: 1.5G RMS Bandwidth: 10-200Hz, Duration: X, Y, Z 30min One time each direction

Height: 25.4cm

300h

(with carton)

Result Evaluation Criteria

There should be no change which might affect the practical display function when the display quality test is

conducted under normal operating condition.

1 corner, 3 edges, 6 surfaces

(ASTMD4169-I)

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7. International Standard

7-1. Safety

(1) UL60065, Underwriters Laboratories, Inc. (AUO file number : E204356)

Standard for Safety of Information Technology Equipment Including electrical Business

Equipment.

(2) CSA E60065, Canadian Standards Association

Standard for Safety of Information Technology Equipment Including Electrical Business

Equipment.

(3) IEC 60065 ver. 7

EUROPEAN STANDARD for Safety of Information Technology Equipment Including Electrical

Business Equipment.

,European Committee for Electro technical Standardization (CENELEC)

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7-2. EMC

(1) ANSI C63.4 “Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and

Electrical Equipment in the Range of 9kHz to 40GHz. “American National standards

Institute(ANSI), 1992

(2) C.I.S.P.R “Limits and Methods of Measurement of Radio Interface Characteristics of Information

Technology Equipment.” International Special committee on Radio Interference.

(3) EN 55022 “Limits and Methods of Measurement of Radio Interface Characteristics of Information

Technology Equipment.” European Committee for Electrotechnical Standardization. (CENELEC),

1998

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8.Packing

8-1 Packing Instruction

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Package information:

Carton outside dimension : 1060x560x678mm

Carton/Package weight :6 kg

Shipping label

Sample Stage (without green & safety mark):

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Mass Production Stage (with green & safety mark) :

Green Mark Description:

For Pb Free products, AUO will add for identification.

For RoHS compatible products, AUO will add

Note:

The Green Mark will be present only when the green documents have been ready by AUO

Internal Green Team. (The definition of green design follows the AUO green design checklist.)

for identification.

Carton label

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Pallet information

By air cargo : : (2x1) x1 layers, one pallet put 2 boxes, 1layers(1pallet) total 14 pcs module.

By sea : (2x1) x3 layers, one pallet put 2 boxes, 3layers(3pallet) total 42 pcs module.

Pallet dimension : 1150x1070x132mm

Pallet weight : 10kg

By air total weight : 95kg/box X 2 boxes=190 kg (with 1 pallet weight 200kg)

By sea total weight : 95kg/box X 6 boxes=570 kg (with 3 pallet weight 600kg)

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Stretch film

Label

Corner angle

Moisture-proof film

PET band

Corner angle

Pallet

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9.PRECAUTIONS

Please pay attention to the followings when you use this TFT LCD module.

9-1 MOUNTING PRECAUTIONS

(1) You must mount a module using holes arranged on back side of panel.

(2) Please attach the surface transparent protective plate to the surface in order to protect the

polarizer. Transparent protective plate should have sufficient strength in order to the resist

external force.

(3) You should adopt radiation structure to satisfy the temperature specification.

(4) Acetic acid type and chlorine type materials for the cover case are not desirable because the

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former generates corrosive gas of attacking the polarizer at high temperature and the latter

causes circuit break by electro-chemical reaction.

(5) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than

HB pencil lead. And please do not rub with dust clothes with chemical treatment. Do not touch

the surface of polarizer for bare hand or gre

asy cloth. (Some cosmetics are detrimental to the polarizer.)

(6) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft

materials like chamois soaks with petroleum benzene. Normal-hexane is recommended for

cleaning the adhesives used to attach front/ rear polarizers. Do not use acetone, toluene and

alcohol because they cause chemical damage to the polarizer.

(7) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer

causes deformations and color fading.

(8) Do not open the case because inside circuits do not have sufficient strength.

9-2 OPERATING PRECAUTIONS

(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage:



200mV(Over and under shoot voltage)

(2) Response time depends on the temperature. (In lower temperature, it becomes longer..)

(3) Brightness depends on the temperature. (In lower temperature, it becomes lower.) And in

lower temperature, response time (required time that brightness is stable after turned on)

becomes longer.

(4) Be careful for condensation at sudden temperature change. Condensation makes damage to

polarizer or electrical contacted parts. And after fading condensation, smear or spot will occur.

(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.

(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference

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shall be done by system manufacturers. Grounding and shielding methods may be important

to minimize the interface.

9-3 ELECTROSTATIC DISCHARGE CONTROL

Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make

certain that treatment persons are connected to ground through wrist band etc. And don’t touch

interface pin directly.

9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE

Strong light exposure causes degradation of polarizer and color filter.

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9-5 STORAGE

When storing modules as spares for a long time, the following precautions are necessary.

(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the

temperature between 5

(2) The polarizer surface should not come in contact with any other object. It is recommended that

they be stored in the container in which they were shipped.

and 35к at normal humidity.

9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM

(1) The protection film is attached to the bezel with a small masking tape. When the protection film

is peeled off, static electricity is generated between the film and polarizer. This should be

peeled off slowly and carefully by people who are electrically grounded and with well ion-blown

equipment or in such a condition, etc.

(2) When the module with protection film attached is stored for a long time, sometimes there

remains a very small amount of flue still on the Bezel after the protection film is peeled off.

(3) You can remove the glue easily. When the glue remains on the Bezel or its vestige is

recognized, please wipe them off with absorbent cotton waste or other soft material like

chamois soaked with normal-hexane.

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AUO T420HW04 V5 Specification

Specifications and Main Features

Frequently Asked Questions

User Manual