NL128102AC23-02A.pdf

DATA SHEET

TFT COLOR LCD MODULE

NL128102AC23-02A

39 cm (15.4 inches), 1280

1024 pixels, Full-color,

Multi-scan Function

Incorporated backlight with inverter

DESCRIPTION

NL128102AC23-02A is a TFT (thin film transistor) active matrix color liquid crystal display (LCD) comprising

amorphous silicon TFT attached to each signal electrode, a driving circuit and a backlight. NL128102AC23-02A

has a built-in backlight with an inverter.

The 39 cm (15.4 inches) diagonal display area contains 1280 ´ 1024 pixels and can display full-color (more than

16 million colors simultaneously). Also, it has multi-scan function.

NL128102AC23-02A is a model which mounted the CRT interface board on NL128102AC23-02.

• High luminance (200 cd/m 2 , TYP.)

• Low reflection

• Auto recognition of input signal (Analog RGB signals, Synchronous signals (Hsync, Vsync, Composite))

• Digital control: e.g., Brightness, Display position, contrast, CLK delay

• Free supply voltage sequence

• Corresponding to DDC TM 1 and DDC2B

• Corresponding to VESA TM , DPMS TM

• On Screen Display

Regarding the use of OSD, please note that there is possibility of conflicts with a patent in Europe and the

U.S. Thus, if such conflict might happen when you use OSD, we shall not be responsible for any trouble.

• Multi-scan function: e.g., SXGA, XGA, SVGA, VGA, VGA-TEXT, MAC

• Incorporated edge type backlight with an inverter (Four lamps into two lamp holders)

• Lamp holder replaceable

VESA : Video Electronics Standards Association

DPMS: Display Power Management Signaling

DDC1 : Display Data Channel 1

DDC2B : Display Data Channel 2B

All trademarks used within this document are the property of their respective owners. VESA, DDC, DPMS and

EDID are trademarks of the Video Electronics Standard Association.

APPLICATIONS

• Desk-top type of PC

• Engineering work station

The information in this document is subject to change without notice.

Document No. EN0427EJ1V0DS00 (1st edition)

Date Published February 1999 P

Printed in Japan

1999

FEATURES

• Wide viewing angle (with retardation film)

• CRT interface board

NL128102AC23-02A

STRUCTURE AND FUNCTIONS

A color TFT (thin film transistor) LCD module is comprised of a TFT liquid crystal panel structure, LSIs for driving

the TFT array, and a backlight assembly. The TFT panel structure is created by sandwiching liquid crystal material

in the narrow gap between a TFT array glass substrate and a color filter glass substrate. After the driver LSIs are

connected to the panel, the backlight assembly is attached to the backside of the panel.

RGB (red, green, blue) data signals from a source system is modulated into a form suitable for active matrix

addressing by the onboard signal processor and sent to the driver LSIs which in turn addresses the individual TFT

cells.

Acting as an electro-optical switch, each TFT cell regulates light transmission from the backlight assembly when

activated by the data source. By regulating the amount of light passing through the array of red, green, and blue

dots, color images are created with clarity.

BLOCK DIAGRAM

I/F Board

LCD module

AMP

AIF

AMP

Hsync/Csync

Vsync

Sync.

Division

PLL

CLK

Timing

Controller

LEDON

LEDOFF

LED00 to 12

SEL

DOWN

EXIT

VOLSEL

OSDSEL

MENUSEL

DDCCLK

DDCDAT

WPRT

BRTVOL

OSD

Sync.

Serial

Controller

(Signal

recognition)

POWER

H-driver

ON/OFF

3840 lines

V DD

(+12 V)

DC/DC

converter

V DD

LCD panel

GND

1024 lines

DC/DC

converter

H: 1280

3 (R,G,B)

V: 1024

Luminance

(on/off)

V DD B

(+12 V)

Inverter

Backlight

GNDB

Note Neither GND nor GNDB is connected to Frame.

Data Sheet EN0427EJ1V0DS00

NL128102AC23-02A

OUTLINE OF CHARACTERISTICS (at room temperature)

Display area

305.28 (H)

244.224 (V) mm

Drive system

a-Si TFT active matrix

Display colors

Full-color

Number of pixels

1280

1024 pixels

Pixel arrangement

RGB vertical stripe

Pixel pitch

0.2385 (H)

0.2385 (V) mm

Module size

350.0 (H)

284.8 (V)

26.0 (max.) (D) mm

Weight 1700 g (TYP.)

Contrast ratio 200 : 1 (TYP.)

Viewing angle (more than the contrast ratio of 10 : 1)

Horizontal : 60° (TYP., left side, right side)

Vertical : 50° (TYP., up side), 45° (TYP., down side)

Color gamut

59% (TYP., at center, to NTSC)

Response time

7 ms (TYP.), white to black

Luminance

200 cd/m 2 (TYP.)

Signal system

Analog RGB signals, Synchronous signals (Hsync and Vsync or Composite),

CLK

Supply voltages

12 V (Logic/LCD driving), 12 V (Backlight)

Backlight

Edge light type: Four cold cathode fluorescent lamps with an inverter

[Replaceable parts]

• Lamp holder: type No. 154LHS02

• Inverter: type No. 154PW021

Power consumption

28.8 W (TYP.)

Data Sheet EN0427EJ1V0DS00

NL128102AC23-02A

GENERAL SPECIFICATIONS

Item

Specification

Unit

Module size

350.0 ± 0.6 (H) ´ 284.8 ± 0.6 (V) ´ 26.0 (MAX.) (D)

Display area

305.28 (H)

244.224 (V)

Number of dots

1280

3 (H)

1024 (V)

dot

Number of pixels

1280 (H) ´ 1024 (V)

pixel

Dot pitch

0.0795 (H) ´ 0.2385 (V)

Pixel pitch

0.2385 (H)

0.2385 (V)

Pixel arrangement

RGB (Red, Green, Blue) vertical stripe

–

Display colors

full color

color

Weight

1760 (MAX.)

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Rating

Unit

Remarks

Supply voltage

V DD

–0.3 to +14

T a = 25°C

V DD B

–0.3 to +14

Logic input voltage

V IN1

–0.3 to +5.5

T a = 25°C

V DD = 12 V

R,G,B input voltage

V IN2

–6.0 to +6.0

CLK input voltage

V IN3

–7.0 to +7.0

Storage temp.

T ST

–20 to + 60

°C

–

Operating temp.

T OP

0 to +50

°C

Module surface

Note

Humidity

95% relative humidity

T a

40°C

No condensation

85% relative humidity

40 < T a £ 50°C

Absolute humidity shall not exceed T a = 50°C, 85%

relative humidity level.

T a > 50°C

Note Measured at the LCD panel

Data Sheet EN0427EJ1V0DS00

NL128102AC23-02A

ELECTRICAL CHARACTERISTICS

(1) Logic, LCD driving, Backlight

T a = 25°C

Parameter

Symbol

MIN.

TYP.

MAX.

Unit

Remarks

Supply voltage

V DD B

11.4

12.0

12.6

for backlight

V DD

11.4

12.0

12.6

for logic and LCD driving

Logic input Low voltage

V IL

–

0.8

Hsync/Csync, Vsync, SEL, UP,

DOWN, EXIT, VOLSEL, DDCDAT,

DDCCLK, OSDSEL, WPRT,

MENUSEL

Logic input High voltage

V IH

2.0

–

5.25

Logic output Low voltage

V OL

–

0.4

DDCDAT

Logic output High voltage

V OH

2.4

–

Logic input Low current 1

I iL1

–1

–

Hsync/Csync, Vsync

Logic input High current 1

I iH1

–

Logic input Low current 2

I iL2

–

m A

DDCDAT

Logic input High current 2

I iH2

–1

–

m A

Supply current

I DD

–

1000

1500

for LCD driving

V DD = 12.0 V

Note

–

Power saving mode, V DD = 12.0 V

Note

I DD B

–

1400

1600

for back light

V DD B = 12.0 V

–

Power saving mode, V DD B = 12.0 V

Note Pixel checkered pattern

(2) Video signal (R,G,B) input

T a = 25°C

Item

MIN.

TYP.

MAX.

Unit

Remarks

Maximum amplitude (white - black)

(black)

0.7

(white)

Vp-p

Need to adjust contrast if input more

0.7 Vp-p

DC input level (black)

–0.5

–

+2.5

–

Sync. level

0.2

0.3

Vp-p

G terminal

(Sync. On Green)

*A + *B

–

1.1

Vp-p

–

Data Sheet EN0427EJ1V0DS00

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