Tektronix TLA704 Data Sheet

DATA SHEET

TFT COLOR LCD MODULE

NL6448AC33-18

26 cm (10.4 type), 640 × 480 pixels, 262144 colors,

incorporated two-lamp/edge-light type backlight

DESCRIPTION

NL6448AC33-18 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. NL6448AC33-18 has a built-in backlight.
Backlight includes long life CCFLs and the tubes are replaceable.

The 26 cm diagonal display area contains 640 × 480 pixels and can display 262144 colors simultaneously.

NL6448AC33-18 is suitable for factory automation use, because luminance is higher, and viewing direction is
selectable by switching display scan direction.

FEATURES

• Backlight tube replaceable (refer to the tube replace manual for NL6448AC33-18)

• High luminance (200 cd/m2 TYP.)

• Display up side/down side reverse function (user set up)

• Low reflection

• 6-bit digital RGB signals

• 3.3 V operation (5.0 V available)

• Incorporated edge type backlight (Two lamps, with inverter, bright/dark selectable)

• Data enable function (DE/Fixed mode select: user set up)

• Smooth polarizer surface (No antiglare treatment)

APPLICATIONS

• Personal computers (PC) for factory automation

• Display terminals for control system

• Monitors for process controller

Document No. EN0195EJ2V0DS00
Date Published January 1997 P
Printed in Japan

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

©

1996

NL6448AC33-18

STRUCTURE AND FUNCTIONS

A TFT color LCD module comprises a TFT LCD panel, LSIs for driving liquid crystal, and the backlight. The
TFT LCD panel is composed of a TFT array glass substrate superimposed on a color filter glass substrate with
liquid crystal filled in the narrow gap between two substrates. The backlight apparatus is located on the backside
of the LCD panel.

RGB (Red, Green, Blue) data signals are sent to LCD panel drivers after modulation into suitable forms for
active matrix addressing through signal processor.

Each of the liquid crystal cells acts as an electro-optical switch that controls the light transmission from the
backlight by a signal applied to a signal electrode through the TFT switch.

BLOCK DIAGRAM

H-driver

R0–R5
G0–G5
B0–B5

CLK
Hsync
Vsync

DE

V

CC

V

DDB

BRTHL

GND (SG)
Frame
GNDB

Digital
signal
processor

LCD timing
controller

SW5

DE/Fixed mode select

Power
supply
circuit

Inverter

Level
shift

Scan select
SW1 - SW 4

LSls
Drivers

V-driver

1920 lines

TFT LCD panel

H : 640 × 3 (R, G, B)
V : 480

480 lines

Backlight

2

NL6448AC33-18

OUTLINE OF CHARACTERISTICS (at room temperature)

Display area 211.2 (H) × 158.4 (V) mm
Drive system a-Si TFT active matrix
Display colors 262144 colors
Number of pixels 640 × 480 pixels
Pixel arrangement RGB vertical stripe
Pixel pitch 0.33 (H) × 0.33 (V) mm
Module size 243.0 (H) × 185.1 (V) × 11.0 max. (D) mm
Weight 470 g (typ.) + 15 g (typ., inverter)
Contrast ratio 150:1 (typ.)
Viewing angle (more than the contrast ratio of 10:1)

Horizontal : 45˚ (typ. left side, right side)
Vertical : 30˚ (typ. up side), 20˚ (typ. down side)

Designed viewing direction • Wider viewing angle with contrast ratio

: up side (12 o’clock, normal scan)
: down side (6 o’clock, reverse scan)

• Wider viewing angle without image reversal
: down side (6 o’clock, normal scan)
: up side (12 o’clock, reverse scan)

• Optimum grayscale (γ = 2.2): perpendicular

Color gamut 56 % (typ. center, to NTSC)
Response time 40 ms (max.), “white” to “black”

2

Luminance 200 cd/m
Signal system 6-bit digital signals for each of RGB primary colors, synchronous signals

(Hsync, Vsync), dot clock (CLK), DE signal
Supply voltages 3.3 V [5.0 V], 12 V
Backlight Edge light type, two cold cathode fluorescent lamp
Power consumption 6.8 W (typ. at 3.3 V, 12.0 V)

(typ., lamp current: 5.0 mA (per one lamp))

GENERAL SPECIFICATIONS

Item Specification Unit
Module size 243.0 ± 0.5 (H) × 185.1 ± 0.5 (V) × 11.0 max. (D) mm
Invertor size 25.0 ± 0.5 (H) × 100
Display area 211.2 (H) × 158.4 (V) mm
Number of pixels 640 (H) × 480 (V) pixel
Dot pitch 0.11 (H) × 0.33 (V) mm
Pixel pitch 0.33 (H) × 0.33 (V) mm
Pixel arrangement RGB (Red, Green, Blue) vertical stripe
Display colors 262144 color
Weight Module: 480 (max.) + Inverter: 20 (max.) g

+0.7

(V) × 10.2 max. (D) mm

–0.3

3

NL6448AC33-18

ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Rating Unit Remarks
Supply voltage VCC –0.3 to 6.5 V Ta = 25 ˚C
Input voltage VI –0.3 to 6.5 V VI – VCC < 3.0
Storage temp. TST –20 to 60 ˚C
Operating temp. TOP 0 to 50 ˚C Module surface*
Humidity ≤ 95 % relative humidity Ta ≤ 40 ˚C No condensation

≤ 85 % relative humidity

Absolute humidity shall not Ta > 50 ˚C
exceed Ta = 50 ˚C,
85 % relative humidity level

* Measured at the display area

ELECTRICAL CHARACTERISTICS

(1) Logic, LCD driving

Parameter Symbol Min. Typ. Max. Unit Remarks
Supply voltage VCC 3.0 3.3 3.6 V VCC = 3.3 V

(4.75) (5.0) (5.25) (VCC = 5.0 V)
Logic input “L” voltage VIL 0–VCC × 0.3 V
Logic input “H” voltage VIH VCC × 0.7 – VCC V
Supply current ICC – *1 300 *2 400 mA VCC = 3.3 V

– *1 (200) *2 (300) mA VCC = 5.0 V

40 < Ta ≤ 50 ˚C

Ta = 25 ˚C

*1. Checker flag pattern (in EIAJ ED-2522)
*2. Theoretical maximum current pattern

(2) Backlight

Parameter Symbol Min. Typ. Max. Unit Remarks
Supply voltage VDDB 11.4 12.0 12.6 V –
Supply current IDDB – 480 – mA 200cd/m

2

SUPPLY VOLTAGE SEQUENCE

*1 The supply voltage for input signals should

be same as VCC.

*2 Apply V

DDB within the LCD operation pe-

riod. When the backlight turns on before
LCD operation or the LCD operation turns
off before the backlight turns off, the dis­play may momentarily become white.

*3 When the power is off, please keep whole

signals (Hsync, Vsync, CLK, data) low
level or high impedance.

V

Signals

Backlight

3.0 (4.75 V) 3.0 (4.75 V)

CC

0s<t<35 ms 0s<t<35 ms

2tv 0<

Ta = 25 ˚C

4

INTERFACE PIN CONNECTION

(1) Interface signals, power supply

Module side connector Mating connector
CN1 ··· DF9C-31P-1V (No. 1 to 31) DF9-31S-1V or DF9M-31S-1R

Supplier: HIROSE ELECTRIC CO., LTD.

NL6448AC33-18

Pin No. Symbol Function

1 GND Ground
2 CLK Dot clock
3 Hsync Horizontal sync.
4 Vsync Vertical sync.
5 GND Ground
6 R0 Red data (LSB)
7 R1 Red data
8 R2 Red data

9 R3 Red data
10 R4 Red data
11 R5 Red data (MSB)
12 GND Ground
13 G0 Green data (LSB)
14 G1 Green data
15 G2 Green data
16 G3 Green data
17 G4 Green data
18 G5 Green data (MSB)

Pin No. Symbol Function

19 GND Ground
20 B0 Blue data (LSB)
21 B1 Blue data
22 B2 Blue data
23 B3 Blue data
24 B4 Blue data
25 B5 Blue data (MSB)
26 GND Ground
27 DE Data enable
28 VCC Power supply
29 VCC Power supply
30 N. C. Non-connection
31 N. C. Non-connection

LSB : Least Significant Bit
MSB : Most Significant Bit

Notes 1. VCC: All VCC terminals should be connected to 3.3 V or 5.0 V.

2. DE/Fixed mode select is set by SW5 on the rear side.

• DE mode (factory set)
SW5 SW1 SW2 SW3 SW4

• Fixed mode
SW5 SW1 SW2 SW3 SW4

out of relation

DE/Fixed mode set up switch

out of relation

DE/Fixed mode set up switch

5

(2) Backlight

Inverter side connector Mating connector
CN2 ··· LZ-5P-SL-SMT LZ-5S-SC3
Supplier: Japan Aviation Electronics Industry Limited (JAE)

<Connector location>

Pin No. Symbol Function

1VDDB Backlight power supply
2VDDB Backlight power supply
3 GNDB Backlight ground
4 GNDB Backlight ground
5 BRTHL Backlight luminance select *

1

Note 1. High luminance (100 %) : High level or open

Low luminance (60 %, TYP.) : Low level

NL6448AC33-18

upper side

CN2

NL6448AC33-18

<Rear view>

Inverter

CN3

lower side

1
2
3
4
5

<pin arrangement of CN3>

CN1

1

3

·

·

·

·

·
31

<pin arrangement of CN1>

2

·

·

·
30

4

·

·

Note 1. CN2 is not connected each other at shipment. It should be connected, when LCD is operated.

6

DISPLAY COLORS vs. INPUT DATA SIGNALS

NL6448AC33-18

Display colors

Black 000000 000000 000000

Blue 000000 000000 111111

Red 111111 000000 000000

Basic colors Magenta 111111 000000 111111

Green 000000 111111 000000

Cyan 000000 111111 111111

Yellow 111111 111111 000000

White 111111 111111 111111
Black 000000 000000 000000

dark 000010 000000 000000

Red grayscale | | |

Green grayscale | | |

Blue grayscale | | |

↑
↓ |||

bright 111101 000000 000000

Red 111111 000000 000000

Black 000000 000000 000000

dark 000000 000010 000000

↑
↓ |||

bright 000000 111101 000000

Green 000000 111111 000000

Black 000000 000000 000000

dark 000000 000000 000010

↑
↓ |||

bright 000000 000000 111101

Blue 000000 000000 111111

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

000001 000000 000000

|||

111110 000000 000000

000000 000001 000000

|||

000000 111110 000000

000000 000000 000001

|||

000000 000000 111110

Data signal (0: Low level, 1: High level)

Note Colors are developed in combination with 6 bit signals (64 steps in grayscale) of each primary red, green,

and blue color.
This process can result in up to 262144 (64 × 64 × 64) colors.

7

INPUT SIGNAL TIMING

(1) Input signal specifications

NL6448AC33-18

Parameter

CLK Frequency 1/tC 21.0 25.175 29.0 MHz 39.722 ns (Typ.)

Duty tch/tC 0.4 0.5 0.6 – –
Rise, fall tcrf – – 10 ns –

Hsync Period th 30.0 31.778 33.6

Display period thd 640 CLK –
Front-porch thf 16 CLK Fixed timing mode

Pulse width thp* 10 96 – CLK Fixed timing mode

Back-porch thb* 4 48 – CLK Fixed timing mode

CLK-Hsync timing thch 12 – – ns –
Hsync-CLK timing thcs 8 – – ns –
Hsync-Vsync timing tvh 1 – – CLK 1CLK = 39.722 ns (Typ.)
Vsync-Hsync timing tvs 30 – – ns –
Rise, fall thrf – – 10 ns –

Vsync Period tv 16.1 16.683 17.2 ms 59.94 Hz (Typ.)

Display period tvd 480 H –
Front-porch tvf 12 H Fixed timing mode

Pulse width tvp* 1 2 – H Fixed timing mode

Back-porch tvb* 4 31 – H Fixed timing mode

Rise, fall – – 10 ns –

DATA
R0 - R5
G0 - G5
B0 - B5

DE DE-CLK timing tes 8 – – ns DE mode

CLK-DATA timing tds 8 – – ns –
DATA-CLK timing tdh 12 – – ns –
Rise, fall tdrf – – 10 ns –

CLK-DE timing teh 12 – – ns
Rise, fall terf – – 10 ns

Symbol

thp + thb* 144 CLK Fixed timing mode

tvp + tvb* 33 H Fixed timing mode

Min. Typ. Max. Unit Remarks

µ

s 31.469 kHz (Typ.)

– 800 – CLK

2 16 – CLK DE mode

10 96 – CLK DE mode

4 48 – CLK DE mode

14 144 – CLK DE mode

– 525 – H

1 12 – H DE mode

1 2 – H DE mode

4 31 – H DE mode

5 33 – H DE mode

All of parameters should be kept in the specified range.

8

(2) Definition of input signal timing

<Vertical>

Vsync

NL6448AC33-18

tv

tvp

Display period

<Horizontal>

DE

Hsync

Note

thp

tvb

thb

tvf

tvd

th

thf

Display period

DE

Note

Note These do not exist as signals.

thd

9

CLK

NL6448AC33-18

tC

tch

0.7 VCC

0.5 VCC

0.3 VCC

tcrf

DATA

(R0 - R5) 0.7 VCC

(G0 - G5) 0.5 VCC
(B0 - B5) 0.3 V

0.7 VCC

DE

0.5 VCC

0.3 VCC

CLK

Hsync

0.5 VCC

0.7 VCC

0.5 VCC

0.3 VCC

tdhtds

INVALID

CC

tdrftdrf

terf

thcsthch

thrf

terf

INVALID

testehtesteh

10

Hsync

Vsync

0.5 VCC

tvhtvh

0.7 VCC

0.5 VCC

0.3 VCC
tvrf

(3) Input signal timing chart

(

)

a) Fixed timing mode

Vsync

NL6448AC33-18

Hsync

Hsync

R0 - R5

G0 - G5

B0 - B5

Hsync

1H (min.)

INVALID

1H (min.)

33H (fixed)

321

34

35 513 514 515

D (X, 0) D (X, Y) D (X, 478) D (X, 479)

33

34

1H

480H (fixed) 12H

513

514

INVALID
(Note: X = 0 to 639)

R0 - R5

G0 - G5

B0 - B5

Hsync

10CLK (min.)

CLK

R0 - R5

G0 - G5

B0 - B5

INVALID

12 145144

INVALID

D (0, Y) D (1, Y) D (638, Y) D (639, Y)

4CLK (min.)

144CLK (fixed)

D (X, Y)

1CLK

D (0, Y) D (1, Y)

INVALID

640CLK (fixed) 16CLK

784 785 800 1

D (639, Y)

Note: Y = 0 to 479

INVALID

11

b) DE mode

(

)

Vsync

NL6448AC33-18

1H

Hsync

DE

R0 - R5

G0 - G5

B0 - B5

DE

R0 - R5
G0 - G5

B0 - B5

INVALID

INVALID

321

D (X, 0)

tvb

D (X, Y) D (X, 479)

D (0, Y) D (1, Y) D (638, Y) D (639, Y)

480H (fixed)

D (X, Y)

tvp tvf

1

INVALID
(Note: X = 0 to 639)

INVALID

12

Hsync

CLK

DE

R0 - R5

G0 - G5

B0 - B5

thp

12

INVALID

thb

1CLK

640CLK (fixed)

144 145 784 785 800

D (0, Y) D (1, Y)

D (639, Y)

thf

INVALID

Note: Y = 0 to 479

1

(4) Display position of input data

Normal scan (factory set)

D (0, 0) D (1, 0) -- - D (X, 0) - - - D (638, 0) D (639, 0)
D (0, 1) D (1, 1) -- - D (X, 1) - - - D (638, 1) D (639, 1)

---

D (0, Y) D (1, Y) -- - D (X, Y) - - - D (638, Y) D (639, Y)

---

D (0, 478) D (1, 478) - - - D (X, 478) - - - D (638, 478) D (639, 478)
D (0, 479) D (1, 479) - - - D (X, 479) - - - D (638, 479) D (639, 479)

---

---

Reverse scan

D (639, 479) D (638, 479) - - - D (X, 479) - - - D (1, 479) D (0, 479)
D (639, 478) D (638, 478) - - - D (X, 478) - - - D (1, 478) D (0, 478)

---

D (639, Y) D (638, Y) - - - D (X, Y) - - - D (1, Y) D (0, Y)

---

D (639, 1) D (638, 1) - - - D (X, 1) - - - D (1, 1) D (0, 1)
D (639, 0) D (638, 0) - - - D (X, 0) - - - D (1, 0) D (0, 0)

---

---

--- ---

---

--- ---

---

--- ---

---

--- ---

---

---

---

---

---

---

---

---

---

NL6448AC33-18

---

---

---

---

---

---

---

---

Note 1. The scan direction is set up by switches on the rear side.

Normal scan

SW5 SW1 SW2 SW3 SW4

rotary switches

Reverse scan

SW5 SW1 SW2 SW3 SW4

rotary switchesdip switch dip switch

*SW5 is not related for setting up the scan direction.

Note 2. Below drawings shows relation between the scan direction and viewing direction.

C

D (0, 0) D (639, 0)

C
N
1

D (0, 479) D (639, 479)

down side view up side view

N
2

C
N
2

D (0, 0) D (639, 0)

D (0, 479) D (639, 479)

C
N
1

13

NL6448AC33-18

GENERAL CAUTION

(1) Caution when taking out the module

1) Pick the pouch only, when taking out module from a shipping package.

(2) Cautions for handling the module

1) As the electrostatic discharges may break the LCD module, handle the LCD module with care. Peel a
protection sheet off from the LCD panel surface as slowly as possible.

2) As the LCD panel and back-light element are made from fragile glass material, impulse and pressure to the
LCD module should be avoided.

3) As the surface of polarizer is very soft and easily scratched, use a soft dry cloth without chemicals for cleaning.

4) Do not pull the interface connectors in or out while the LCD module is operating.

5) Put the module display side down on a flat horizontal plane.

6) Handle connectors and cables with care.

7) The torque to mounting screw should never exceed 0.294 N·m (3 Kgf·cm).

(3) Cautions for the operation

1) When the module is operating, do not lose CLK, Hsync or Vsync signals. If any one of these signals is lost,
the LCD panel would be damaged.

2) Obey the supply voltage sequence. If wrong sequence is applied, the module would be damaged.

(4) Cautions for the atmosphere

1) Dew drop atmosphere should be avoided.

2) Do not store and/or operate the LCD module in a high temperature and/or humidity atmosphere. Storage
in an electro-conductive polymer packing pouch and under relatively low temperature atmosphere is
recommended.

3) This module uses cold cathode fluorescent lamps. Therfore, the life time of lamps becomes short
conspicuously at low temperature.

(5) Cautions for the module characteristics

1) Do not apply fixed pattern data signal to the LCD module at product aging. Applying fixed pattern for a long
time may cause image sticking.

(6) Other cautions

1) Do not disassemble and/or re-assemble LCD module. (except for backlight lamp)

2) Do not re-adjust variable resistor or switch etc. (except for scan select switches)

3) When returning the module for repair or etc., please pack the module not to be broken.
We recommend to use the original shipping packages.

4) Turn off the power supply to avoid electrical shock while backlight lamp is replaced, and refer to the backlight
replace manual.

Liquid Crystal Display has the following specific characteristics. These are not defects or malfunctions.
The display condition of LCD module may be affected by the ambient temperature.
The LCD module uses cold cathode tubes for backlighting. Optical characteristics, like luminance or
uniformity, will change during time.
Uneven brightness and/or small spots may be noticed depending on different display patterns.

14

OUTLINE DRAWING: Front View (Unit in mm)

(62.2)

φ

5 ±0.3

2- 2.5

2.5 ±0.2

10.5 TYP

(13) (82)

(5)

104PWBJ1

5 ±0.3

2.5 ±0.2

NL6448AC33-18

7.5 TYP

(4.8)

(12.9)

7.2 ±0.3

(9.3)

(3.9)(2.9)

(8.1)

14.6 ±0.3

(4.7)

2-R1.75

HIGH VOLTAGE

CAUTION

+0.7

100

–0.3

(161.8) (Bezel opening)

(158.4) (Display erea)

132.6 ±0.3

(3.15)

(1.8)

(4.7)

Display erea center

(15)

25 ±0.3

LZ-5P-SL-SMT (JAE)

(8.1)

(3.9)(2.9)

10.5 TYP

243 ±0.5

235 ±0.3

(211.2) (Display erea)

(215.4) (Bezel opening)

(4)

(5.7)

(2.8)

5 ±0.3

2.5 ±0.2

10.5TYP

(29.4)

(5.1)

17 ±0.3

2.9

(88.3)

Module center

166.6 ±0.3

185.1 ±0.5

(16.4) (21.6)

(3.7)

4-CPIMS×M2×L4

φ

2- 3.5

(5.1)

(5.7)

7.5 TYP

(4)(2.8)

5 ±0.3

2.5 ±0.2

7.5 TYP

15

OUTLINE DRAWING: Rear View (Unit in mm)

NL6448AC33-18

(5.3) (5)

(5.6) (2.4)

∗∗∗−∗

S

Name 104DLM-17

Pal No

83.3 ±0.5
(16.4) (21.6)

2.3 ±0.5

4.0 ± 0.5

THE TEF COLOR LCD

PANEL CONTAINS COLD CATHODE

FLOURESCENT LAMPS. PLEASE

FOLLOW LOCAL ORDINANCES

OR REGULATIONS FOR ITS

DISPOSAL

(HIROSE)

DF9-31P-1V

(5.3)(5)

(6.6) (2.4)

MADE IN JAPAN

ES2228421

A100100100100

NL6448AC33-18

K2000A762402

(3.4) (4.0)

60 ±10

BHR-03VS-1 (JST)

1PIN: COLD.2.3PIN: HOT

HIGH VOLTAGE

CAUTION

(8)

(6.8)

(54.4)

(48.95)

(43.2)

(37.45)

(31.7)

(4.45)

(6.8)

104PWBJ1

(0.25)

(8)

SW4

SW3

(3.4) (3.4)

SW2

SW1

(4.5)

SW5

16

[MEMO]

NL6448AC33-18

17

NL6448AC33-18

No part of this document may be copied in any form or by any means without the prior written consent of NEC
Corporation.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or of others.
The information in this document is subject to change without notice. Contact your nearest NEC representative
for the latest specifications before designing this device into your system.

16