HITACHI TX31D38VM2BAA Specification

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CUSTOMER’S ACCEPTANCE SPECIFICATIONS

TX31D38VM2BAA

DATE :

May 1st, 2012

Contents

No. ITEM SHEET No. PAGE

1 COVER 7B64PS 2701- TX31D38VM2BAA-2 1-1/1

2 RECORD OF REVISION 7B64PS 2702- TX31D38VM2BAA-2 2-1/1

3 GENERAL DATA 7B64PS 2703- TX31D38VM2BAA-2 3-1/1

4 ABSOLUTE MAXIMUM RATINGS 7B64PS 2704- TX31D38VM2BAA-2 4-1/1

5 ELECTRICAL CHARACTERISTICS 7B64PS 2705- TX31D38VM2BAA-2 5-1/2~2/2

6 OPTICAL CHARACTERISTICS 7B64PS 2706- TX31D38VM2BAA-2 6-1/2~2/2

7 BLOCK DIAGRAME 7B64PS 2707- TX31D38VM2BAA-2 7-1/1

8 RELIABILITY TESTS 7B64PS 2708- TX31D38VM2BAA-2 8-1/1

9 LCD INTERFACE 7B64PS 2709- TX31D38VM2BAA-2 9-1/7~7/7

10 OUTLINE DIMENSIONS 7B64PS 2710- TX31D38VM2BAA-2 10-1/2~2/2

11 APPEARANCE STANDARD 7B64PS 2711- TX31D38VM2BAA-2 11-1/3~3/3

12 PRECAUTIONS 7B64PS 2712- TX31D38VM2BAA-2 12-1/2~2/2

13 DESIGNATION OF LOT MARK 7B64PS 2713- TX31D38VM2BAA-2 13-1/1

ACCEPTED BY: PROPOSED BY:

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2. RECORD OF REVISION

DATE SHEET No. SUMMARY

May 01,’12 All pages Company name changed:

KAOHSIUNG HITACHI ELECTRONICS CO.,LTD.

p

KAOHSIUNG OPTO-ELECTRONICS INC.

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3. GENERAL DATA

3.1 DISPLAY FEATURES

This module is a 12.3” HSXGA of 8:3 format amorphous silicon TFT. The pixel format is vertical stripe
and sub pixels are arranged as R (red), G (green), B (blue) sequentially. This display is RoHS
compliant, COG (chip on glass) technology and LED backlight are applied on this display.

Part Name TX31D38VM2BAA

Module Dimensions 320(W) mm x 130(H) mm x (12.8)(D) mm typ.

LCD Active Area 293.76(W) mm x 110.16(H) mm

Pixel Pitch 0.2295(W) mm x 0.2295(H) mm

Resolution 1280 x 3(RGB)(W) x 480(H) dots

Color Pixel Arrangement R, G, B Vertical stripe

LCD Type Transmissive Color TFT; Normally White

Display Type Active Matrix

Number of Colors 262k Colors

Backlight LED (Lifetime: 70 Khrs)

Weight 586 g

Interface LVDS; 20 pins

Power Supply Voltage 3.3V for LCD; 12V for Backlight

Power Consumption 1.848 W for LCD; 10.08 W for backlight

Viewing Direction

12 o’clock (without image inversion and least brightness change)

6 o’clock (contrast peak located at)

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4. ABSOLUTE MAXIMUM RATINGS

Item Symbol Min. Max. Unit Remarks

Supply Voltage VDD 0 4.0 V -

Input Voltage of Logic VI -0.3 VDD+0.3 V Note 1

Operating Temperature Top -30 80

Storage Temperature Tst -40 90

Backlight Input Voltage VLED - 15 V Note 3

Note 1: It shall be applied to pixel data signal, clock signal and control Pin.

Note 2: The maximum rating is defined as above based on the chamber temperature, which might be

different from ambient temperature after assembling the panel into the application. Moreover,
some temperature-related phenomenon as below needed to be noticed:

- Background color, contrast and response time would be different in temperatures other than

$

25

.

C

- Operating under high temperature will shorten LED lifetime.

$

Note 2

C

$

Note 2

C

Note 3: Do not operate at or near the maximum rating listed for extended periods of time. Exposure to

such conditions may adversely impact product reliability and result in failures not covered by
warranty.

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5. ELECTRICAL CHARACTERISTICS

5.1 LCD CHARACTERISTICS

Item

Power Supply

Voltage

Differential Input

Voltage for LVDS

Receiver Threshold

Power Supply

Current

Vsync Frequency

Hsync Frequency

DCLK Frequency

Note 1: VCM=+1.2V

VCM is common mode voltage of LVDS transmitter/receiver.

The input terminal of LVDS transmitter is terminated with 100.

IN+

IN-

Symbol

VDD

IDD

f

100

VI

f

f

CLK

$

a

Condition Min. Typ. Max. Unit Remarks

- 3.0 3.3 3.6 V -

VIH - - +100

VIL -100 - -

VDD-VSS

=3.3V

- - 60 66 Hz

v

- - 31.8 33.3 KHz

- - 43.2 48 MHz

LVDS

Receiver

- 560 680 mA Note 2,3

mV Note 1

Note 4

0VVSS,25 CT

f

Note 2: An all black check pattern is used when measuring IDD,

is set to 60Hz.

v

DC Ampere Meter

V

DD

I

DD

TFT-LCM

V

DD

V

SS

Note 3: 1.0A fuse is applied in the module for IDD. For display activation and protection purpose, power

supply is recommended larger than 2.5A to start the display and break fuse once any short
circuit occurred.

Note 4: For LVDS transmitter input.

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5.2 BACKLIGHT CHARACTERISTICS

Item

LED Input Voltage VLED - 11.5 12 12.5 V Note1

LED Forward Current

(Dim Control)

LED lifetime - 840 mA - 70K - hrs Note 3

Symbol

ILED

3.3VDC; 100% duty - 70 120

Condition Min. Typ. Max. Unit Remarks

0V; 0% duty - 840 890

mA Note 2

a

Note 1: As Fig. 5.1 shown, LED current is constant, 840 mA, controlled by the LED driver when

applying 12V VLED.

Note 2: Dimming function can be obtained by applying DC voltage or PWM signal from the display

interface CN1. The recommended PWM signal is 1K ~ 10K Hz with 3.3V amplitude.

Note 3: The estimated lifetime is specified as the time to reduce 50% brightness by applying 840 mA at

$

25

.

C

$

CT

25

Fig 5.1

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T

T

T

T

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6. OPTICAL CHARACTERISTICS

The optical characteristics are measured based on the conditions as below:

- Supplying the signals and voltages defined in the section of electrical characteristics.

- The backlight unit needs to be turned on for 30 minutes.

$

- The ambient temperature is 25

- In the dark room around 500~1000 lx, the equipment has been set for the measurements as shown in
Fig 6.1.

Item

Brightness of White -

Brightness Uniformity - 70 - - % Note 2

Contrast Ratio CR 400 800 - - Note 3

Response Time

Rising + Falling

(

)

NTSC Ratio

Viewing Angle

Red

Symbol

TT 

-

x

c

x

y

c

y

X

Y 0.31 0.36 0.41

.

C

$

va

Condition Min. Typ. Max. Unit Remarks

2

cd/m

$$

,

0,0

TI

800 1000 -

Note 1

ILED= 840 mA

fr

$

I

$

I

$

I

$

I

$$

- 25 - ms Note 4

0,0

TI

$$

- 60 - % -

0,0

TI

60 80 -

10 CR ,0 t

60 80 -

10 CR ,180 t

Degree Note 5

40 60 -

10 CR ,90 t

60 80 -

10 CR ,270 t

0.55 0.60 0.65

VfCT

3.3= VDDHz, 60 = ,25 =

Green

X 0.31 0.36 0.41

Color

Chromaticity

Y 0.55 0.60 0.65

X 0.10 0.15 0.20

$$

0,0

TI

- Note 6

Blue

Y 0.05 0.10 0.15

X 0.27 0.32 0.37

White

Y 0.30 0.35 0.40

Note 1: The brightness is measured from center point of the panel, P5 in Fig. 6.2, for the typical value.

Note 2: The brightness uniformity is calculated by the equation as below:

Brightness uniformity = X100%

Min. Brightness

Max. Brightness

, which is based on the brightness values of the 9 points measured by BM-7 as shown in Fig. 6.2.

320 640 960

Photo detector: BM-7

1 2 3

4 5 6

Field 1ɮ

Distance烉500 mm

80

240

LCD panel

400

7 8 9

Fig. 6.1

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Fig. 6.2

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T

3 o'clock

I

6 o'clock

12 o'clock

9 o'clock

T

= Viewing angle

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Note 3: The contrast ratio is measured from the center point of the panel, P5, and defined as the

following equation:

CR

Whiteof Brightness

Black of Brightness

Note 4: The definition of response time is shown in Fig. 6.3. The rising time is the period from 90%

brightness to 10% brightness when the data is from white to black. Oppositely, Falling time is
the period from 10% brightness rising to 90% brightness.

WhiteWhite Black

Rising time Falling time

100 %

90

Brightness

10

0

Tr Tf

Fig . 6.3

Note 5: The definition of viewing angle is shown in Fig. 6.4. Angle I is used to represent viewing

directions, for instance,
angle

is used to represent viewing angles from axis Z toward plane XY.

I

means 6 o’clock, and

$

270

$

means 3 o’clock. Moreover,

0

I

The viewing direction of this display is 12 o’clock, which means that a photograph with gray

scale would not be reversed in color and the brightness change would be less from this
direction. However, the best contrast peak would be located at 6 o’clock.

z

90$

I

$

180

I

y

,0)y(x,

0$

I

xx'

270

I

$

y'

z'

Fig. 6.4

Note 6: The color chromaticity is measured from the center point of the panel, P5, as shown in Fig. 6.2.

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8. RELIABILITY TESTS

Test Item Condition

High Temperature

Low Temperature

High Temperature

Low Temperature

Heat Cycle

Thermal Shock

High Temperature &

Humidity

Vibration

Mechanical Shock

ESD

1) Operating

$

2) 80

C

1) Operating

$

2) -30

C

1) Storage

$

2) 90

C

1) Storage

$

2) -40

C

1) Operating

$

2) –30

3) 3hrs~1hr~3hrs

1) Non-Operating

$

2) -35

3) 0.5 hr

1) Operating

$

2) 40

C

3) Without condensation
(Note4)

1) Non-Operating

2) 10㹼200 Hz

3) 5G

4) X, Y, and Z directions

1) Non-Operating

2) 10 ms

3) 80G

4)

1) Operating

2) Tip: 150 pF, 330

3) Air discharge for glass:

4) Contact discharge for metal frame:

$

l C

80

C

$

l C

85

C

0.5 hr

l

& 85%RH

YX, rr

and Zrdirections

:

500 hrs

500 hrs

500 hrs

500 hrs

500 hrs

500 hrs

500 hrs

1 hr for each direction

Once for each direction

r

12KV

15KV

r

1) Glass: 9 points

2) Metal frame: 8 points
(Note3)

Note 1: Display functionalities are inspected under the conditions defined in the specification after the

reliability tests.

Note 2: The display is not guaranteed for use in corrosive gas environments.

Note 3: All pins of LCD interface(CN1) have been tested by

r

100V contact discharge of ESD under

non-operating condition.

Note 4: Under the condition of high temperature & humidity, if the temperature is higher than 40ɗ, the

humidity needs to be reduced as Fig. 8.1 shown.

ĺı
Ĺı
ĸı
ķı
Ķı
ĵı
Ĵı
ijı
IJı

Relative Humidity RH (%)

ı

ijı ijĶ Ĵı ĴĶ ĵı ĵĶ Ķı ĶĶ ķı ķĶ ĸı ĸĶ

$

Temperature Ta

Fig. 8.1

C)(

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9. LCD INTERFACE

9.1 INTERFACE PIN CONNECTIONS

The display interface connector (CN1) is FI-SEB20P-HF13E made by JAE and pin assignment is as
below:

Pin No. Symbol Signal

1 VDD
2 VDD
3 VSS
4 VSS
5 IN0­6 IN0+
7 VSS GND
8 IN1-

9 IN1+
10 VSS GND
11 IN2­12 IN2+
13 VSS GND
14 CLK IN­15 CLK IN+
16 VSS GND
17
18 NC
19

20 DIM

NC

VSS GND

Power Supply for Logic

GND

R0~R5, G0

G1~G5, B0~B1

B2~B5, DE

Pixel Clock

No Connection

Normal Brightness: 0V or 0% PWM Duty
Brightness Control: 0V to 3.3 VDC or 0% to 100% PWM Duty

Note 1: IN n- and IN n+ (n=0, 1, 2), CLK IN- and CLK IN+ should be wired by twist-pairs or side-by-side

FPC patterns, respectively.

Note 2: All VSS pins should be connected to GND(0V),Metal bezel is connected internally to VSS.

Note 3: Normal brightness: 0V or 0% PWM duty; Brightness Control: 0V to 3.3V DC or 0% to 100%

PWN duty.

The backlight connector (CN2) is SM02(8.0)B-BHS-1-TB (LF)(SN) made by JST, and pin assignment is
as below:

Pin No. Symbol Signal

1 VLED 12VDC

2 GND Ground

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9.2 LVDS INTERFACE

Machine Side

Controll

Controller

R0-R5,G0

G1-G5,B0,B1

B2-B5,NA,NA,DE

7 TA0-6

7 TB0-6

7 TC0-6

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2)

THC63LVDM83R

CN1

(interface)

IN0+

IN0-

IN1+

IN1-

IN2+

IN2-

3)1)

Tcon IC

TFT-LCD Side

MLVDS-1
MLVDS-2

MLVDS-3
MLVDS-4
MLVDS-5

MLVDS-6

LCD Panel

controller

CK

DCLK IN

PLL

CLK IN+

CLK IN-

PLL

DCLK OUT

Note 1: LVDS cable impedance should be 100 ohms per signal line when each 2-lines (+, -) is used in

differential mode.

Note 2: The recommended transmitter, THC63LVDM83R, is made by Thine or equivalent, which is not

contained in the module.

9.3 LVDS DATA FORMAT

1 cycle

CLK IN-

CLK IN+

IN0+

IN0-

IN1+

IN1-

R1 R0 G0 R5 R4 R3 R2 R1 R0 G0

G2 G1 B1 B0 G5 G4 G3 G2 G1 B1

IN2+

IN2-

B3 B2 DE NA NA B5 B4 B3 B2 DE

DE: Display Enable

NA: Not Available

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9.4 INTERFACE TIMING SPECIFICATIONS

The column of timing sets including minimum, typical, and maximum as below are based on the best
optical performance, frame frequency (Vsync) = 60 Hz to define. If 60 Hz is not the aim to set, less than
66 Hz for Vsync is recommended to apply for better performance by other parameter combination as
the definitions in section 5.1.

Item Symbol Min. Typ. Max. Unit

39.6 43.2 48 MHz

CLK

10 - -

WCL

10 - -

WCH

, t

rCLK

fCLK

8 - -

SI

8 - -

SD

- - 12

DCLK

DE

Data

Cycle frequency 1/t

Low level width t

High level width t

Rise / Fall time t

Duty D 0.4 0.5 0.6 -

Set up time t

Hold time tHI 8 - -

Rise / Fall time tIr,tIf - - 12 ns

Horizontal cycle tH 1320 1360 1440

Horizontal valid data width tHD 1280 1280 1280

Horizontal porch width tHB 40 80 160

Vertical cycle tv 500 530 555

Vertical valid data width tVD 480 480 480

Vertical porch width tVB 20 50 75

Set up time t

Hold time tHD 8 - -

Rise / Fall time tDr,tDf - - 12 ns

ns

ns

t

CLK

ns

t

H

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9.5 TIMING CHART

Data Enable (DE) is the signal to determine valid data, and the timing of DE can be determined from
Horizontal and Vertical timing as below. For this display, only DE and DCLK are the essential signals.
Horizontal and Vertical timing are not necessary to connect to display interface after DE has been
generated and input.

th = 1360 CLK (1H)

DE

CLK

R [0:5]

G [0:5]

B [0:5]

12 3 40

40 CLK (typ.) thd = 1280 CLK (fixed)

Invalid data

41

43.2M Hz (typ.)

Display data

RRRRR RRRR

GGGGG GGGG

BBBB B BBB B

1320 1360

Fig. 8.3 Horizontal Timing

12

40CLK (typ.)

Invalid data

Fig. 8.4 Vertical Timing

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9.6 LVDS RECEIVER TIMING

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tRP2

tRP3

tRP4

tRP5

tRP6

tRP0

tRP1

RinX

DCLK

Rx6 Rx5 Rx4 Rx3 Rx2 Rx1 Rx0

RinX= (RinX+)-(RinX-) (X=0, 1, 2)

Item Symbol Min. Typ. Max. Unit

DCLK Frequency 1/ t

RinX

(X=0,1,2)

0 data position tRP0 1/7* t

1st data position tRP1 -0.4 0 +0.4

2nd data position tRP2 6/7* t

3rd data position tRP3 5/7* t

4th data position tRP4 4/7* t

5th data position tRP5 3/7* t

6th data position tRP6 2/7* t

Vdiff=0VVdiff=0V

+0.4

+0.4

+0.4

+0.4

+0.4

+0.4

Vdiff=0V

ns

Rx6 Rx5 Rx4 Rx3 Rx2

t

CLK

39.6 43.2 48 MHz

CLK

-0.4 1/7* t

CLK

-0.4 6/7* t

CLK

-0.4 5/7* t

CLK

-0.4 4/7* t

CLK

-0.4 3/7* t

CLK

-0.4 2/7* t

CLK

1/7* t

CLK

6/7* t

CLK

5/7* t

CLK

4/7* t

CLK

3/7* t

CLK

2/7* t

CLK

CLK

CLK

CLK

CLK

CLK

CLK

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9.7 DATA INPUT for DISPLAY COLOR

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Basic
Color

Red

Green

Blue

COLOR &

Gray Scale

R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0

Black 0 0 0 0 0 00000000 0 0 00 0

Red (0) 1 1 1 1 1 10000000 0 0 00 0

Green (0) 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0

Blue (0) 0 0 0 0 0 00000001 1 1 11 1

Cyan 0 0 0 0 0 01111111 1 1 11 1

Magenta 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1

Yellow 1 1 1 1 1 11111110 0 0 00 0

White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Black 0 0 0 0 0 00000000 0 0 00 0
Red (62) 0 0 0 0 0 10000000 0 0 000
Red (61) 0 0 0 0 1 00000000 0 0 000

: : : : : : : : : : : : : : : : : : :

: : : : : : : : : : : : : : : : : : :
Red (1) 1 1 1 1 1 00000000 0 0 00 0
Red (0) 1 1 1 1 1 10000000 0 0 00 0

Black 0 0 0 0 0 00000000 0 0 00 0
Green (62) 0 0 0 0 0 00000010 0 0 00 0
Green (61) 0 0 0 0 0 00000100 0 0 00 0

: : : : : : : : : : : : : : : : : : :

: : : : : : : : : : : : : : : : : : :
Green (1) 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0
Green (0) 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0

Black 0 0 0 0 0 00000000 0 0 00 0
Blue (62) 0 0 0 0 0 00000000 0 0 00 1
Blue (61) 0 0 0 0 0 00000000 0 0 01 0

: : : : : : : : : : : : : : : : : : :

: : : : : : : : : : : : : : : : : : :
Blue (1) 0 0 0 0 0 00000001 1 1 11 0
Blue (0) 0 0 0 0 0 00000001 1 1 11 1

Data Signal

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9.8 POWER SEQUENCE

VDD

0.7VDD

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Note 1

Signals

Backlight

0.3VDD

0.3VLED

Note 2

Power Sequence Timing

Note 1: In order to avoid any damages, VDD has to be applied before all other signals. The opposite is

true for power off where VDD has to be remained on until all other signals have been switch off.
The recommended time period is 1 second. Hot plugging might cause display damage due to
incorrect power sequence, please pay attention on interface connecting before power on.

Note 2: In order to avoid showing uncompleted patterns in transient state. It is recommended that

switching the backlight on is delayed for 1 second after the signals have been applied. The
opposite is true for power off where the backlight has to be switched off 1 second before the
signals are removed.

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T

T

T

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11. APPEARANCE STANDARD

The appearance inspection is performed in a dark room around 500~1000 lx based on the conditions
as below:

- The distance between inspector’s eyes and display is 30 cm.

- The viewing zone is defined with angle

shown in Fig. 11.1 The inspection should be performed

within 45ɮwhen display is shut down. The inspection should be performed within 5ɮwhen display is
power on.

Fig 11.1

Fig. 12.1

11.1 THE DEFINITION OF LCD ZONE

LCD panel is divided into 3 areas as shown in Fig.11.2 for appearance specification in next section. A
zone is the LCD active area (dot area); B zone is the area, which extended 1 mm out from LCD active
area; C zone is the area between B zone and metal frame.

In terms of housing design, B zone is the recommended window area customers’ housing should be
located in.

Fig 11.2

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11.2 LCD APPEARANCE SPECIFICATION

The specification as below is defined as the amount of unexpected phenomenon or material in different
zones of LCD panel. The definitions of length, width and average diameter using in the table are shown
in Fig. 11.3 and Fig. 11.4.

Item Criteria Applied zone

Length (mm) Width (mm) Maximum number Minimum space

Ignored Wʀ0.01 Ignored -

Lʀ40 Wʀ0.02 10 -

Scratches

Dent Serious one is not allowed A

Wrinkles in polarizer Serious one is not allowed A

Bubbles on polarizer

1) Stains

2) Foreign Materials

3) Dark Spot

Dot-Defect

(Note 1)

Lʀ20 Wʀ0.04 10 -

Round (Dot Shape)

Average diameter (mm) Maximum number Minimum space

Dʀ0.2 Ignore ­Dʀ0.4 10 -

Average diameter (mm) Maximum number

Dʀ0.3 Ignored

0.3烋Dʀ0.5 10

0.5烋Dʀ1.0 5

Filamentous (Line shape)

Length (mm)

Ignored

Lʀ1.0

1.0ʀL Dot Shape

Average diameter (mm) Maximum number Minimum Space

Dʀ0.45 Ignored -

0.45烋Dʀ0.7 5 -

0.7烋D None -

In total Filamentous + Round=10

Those wiped out easily are acceptable

Type Maximum number

Bright dot-defect

Dark dot-defect

In total 10

Width (mm) Maximum number

0.06烋W

Round (Dot shape)

1 dot 4

2 adjacent dot 1

3 adjacent dot or above Not allowed

In total 5

1 dot 5

2 adjacent dot 2

3 adjacent dot or above Not allowed

In total 5

Ignored

A,B

A

A,B

A,B

A

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Length

Width

Fig 11.3

Note 1: The definitions of dot defect are as below:

- The defect area of the dot must be bigger than half of a dot.

- For bright dot-defect, showing black pattern, the dot’s brightness must be over 30% brighter

than others.

- For dark dot-defect, showing white pattern, the dot’s brightness must be under 70% darker
than others.

- The definition of 1-dot-defect is the defect-dot, which is isolated and no adjacent defect-dot.

- The definition of adjacent dot is shown as Fig. 11.5.

- The Density of dot defect is defined in the area within diameter

a

b

Average diameter =

a+b

2

Fig 11.4

I =20mm.

The dots colored gray are

adjacent to defect-dot A.

A

Fig. 12.5

Fig 11.5

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12. PRECAUTIONS

12.1 PRECAUTIONS OF ESD

1) Before handling the display, please ensure your body has been connected to ground to avoid any
damages by ESD. Also, do not touch display’s interface directly when assembling.

2) Please remove the protection film very slowly before turning on the display to avoid generating ESD.

12.2 PRECAUTIONS OF HANDLING

1) In order to keep the appearance of display in good condition, please do not rub any surfaces of the
displays by sharp tools harder than 3H, especially touch panel, metal frame and polarizer.

2) Please do not pile the displays in order to avoid any scars leaving on the display. In order to avoid
any injuries, please pay more attention for the edges of glasses and metal frame, and wear finger
cots to protect yourself and the display before working on it.

3) Touching the display area or the terminal pins with bare hand is prohibited. This is because it will
stain the display area and cause poor insulation between terminal pins, and might affect display’s
electrical characteristics furthermore.

4) Do not use any harmful chemicals such as acetone, toluene, and isopropyl alcohol to clean display’s
surfaces.

5) Please use soft cloth or absorbent cotton with ethanol to clean the display by gently wiping.
Moreover, when wiping the display, please wipe it by horizontal or vertical direction instead of
circling to prevent leaving scars on the display’s surface, especially polarizer.

6) Please wipe any unknown liquids immediately such as saliva, water or dew on the display to avoid
color fading or any permanently damages.

4

7) Maximum pressure to the surface of the display must be less than 1,96 x 10
adding pressure is less than 1 cm

2

, the maximum pressure must be less than 1.96N.

Pa. If the area of

12.3 PRECAUTIONS OF OPERATING

1) Please input signals and voltages to the displays according to the values defined in the section of
electrical characteristics to obtain the best performance. Any voltages over than absolute maximum
rating will cause permanent damages to this display. Also, any timing of the signals out of this
specification would cause unexpected performance.

2) When the display is operating at significant low temperature, the response time will be slower than it

at 25
However, these are temperature-related phenomenon of LCD and it will not cause permanent
damages to the display when used within the operating temperature.

$

C

. In high temperature, the color will be slightly dark and blue compared to original pattern.

3) The use of screen saver or sleep mode is recommended when static images are likely for long
periods of time. This is to avoid the possibility of image sticking.

4) Spike noise can cause malfunction of the circuit. The recommended limitation of spike noise is no
bigger than

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12.4 PRECAUTIONS of STORAGE

If the displays are going to be stored for years, please be aware the following notices.

1) Please store the displays in a dark room to avoid any damages from sunlight and other sources of
UV light.

2) The recommended long term storage temperature is between 10

$

C

to avoid causing bubbles between polarizer and LCD glasses, and polarizer peeling from LCD
glasses.

3) It would be better to keep the displays in the container, which is shipped from Hitachi, and do not
unpack it.

4) Please do not stick any labels on the display surface for a long time, especially on the polarizer.

~35

$

C

and 55%~75% humidity

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13. DESIGNATION OF LOT MARK

1) The lot mark is showing in Fig.13.1. First 4 digits are used to represent production lot, T represented
made in Taiwan, and the last 6 digits are the serial number.

2 0 4 1 T 1 2 3 4 5

Serial number

T: Made in Taiwan

Week

Month
Year

Fig. 13.1

6

2) The tables as below are showing what the first 4 digits of lot mark are shorted for.

Lot Mark Lot MarkMonth Month

Jan.
Feb.
Mar.
Apr.
May
Jun.

01
02
03
04
05
06

Jul.
Aug.
Sep.
Oct.
Nov.

Dec.

07
08
09
10
11
12

Week

1~7 days

8~14 days
15~21 days
22~28 days
29~31 days

Lot Mark

1
2
3
4
5

3) Except letters I and O, revision number will be shown on lot mark and following letters A to Z.

4) The location of the lot mark is on the back of the display shown in Fig. 13.2.

TX31D38VM2BAA

REV: A

2041T (5D) 123456

KOE MADE IN TAIWAN

Fig. 13.2

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