Document Number: DOD-PD-0072 (2nd edit i on)
Publis hed date: June 2003 CP(N) NEC LCD Technologies, Ltd.
2003 All rights reserved.
1
This DATA SHEET is updated document from
DOD-M-1355(1).
All information is subject to change without notice.
Please confirm the sales representative before
starting to design your system.
TFT COLOR LCD MODULE
NL6448BC33-54
26.4cm (10.4 Type)
VGA
DATA SHEET
DOD-PD-0072 (2nd edition)
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 2
INTRODUCTION
No part of this document shall be copied in any for m or by any means without the prior written consent
of NEC LCD Technologies, Ltd. (hereinafter called "NEC").
NEC does not assume any liab ility for infringement of patents, copyr ights or other intellectual p roperty
rights of third parties by or arising from use of a product described herein or any other liability arising
from use of such application. No license, express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC or of others.
While NEC has been making continuous effort to enhance the reliability of its products, the possibility
of failures cannot be eliminated entirely. To minimize risks of damage to property or injury to person
arising from a failure in an NEC product, customers must incorporate suffic ient safety measures in their
design, such as redundancy, fire-containment and anti-failure features.
NEC products are classified into the following three quality grades:
"Standard", "Special", "Specific"
The "Specific" quality grade applies only to applications developed based on a customer designated
"quality assurance program" for a specific application. The recommended applications of a product
depend on its quality grade, as indicated below. Customers must check the quality grade of each
application before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically
designed for life support)
Specific: Military s ystems, aircraft, aerospace equipment, submersible repeaters, nuclear reactor control
systems, life support systems (medical equipment, etc.) and any other equipment
The quality grade of this product is "Standard" unless otherwise specified in this document. If
customers intend to use this product for applications other than those specified for "Standard" quality
grade, they should contact NEC sales representative in advance.
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 3
CONTENTS
INTRODUCTION ..........................................................................................................................................2
1. OUTLINE....................................................................................................................................................4
1.1 STRUCTURE AND PRINCIPLE...........................................................................................................4
1.2 APPLICATIONS.....................................................................................................................................4
1.3 FEATURES.............................................................................................................................................4
2. GENERAL SPECIFICATIONS................................................................................................................5
3. BLOCK DIAGRAM...................................................................................................................................6
4. DETAILED SPECIFICATIONS...............................................................................................................7
4.1 MECHANICAL SPECIFICATIONS......................................................................................................7
4.2 ABSOLUTE MAXIMUM RATINGS ....................................................................................................7
4.3 ELECTRICAL CHARACTERISTICS...................................................................................................8
4.3.1 Driving for LCD panel signal processing board............................................................................8
4.3.2 Working for backlight lamp...........................................................................................................9
4.3.3 Power supply voltage ripple.........................................................................................................10
4.3.4 Fuse..............................................................................................................................................10
4.4 POWER SUPPLY VOLTAGE SEQUENCE ........................................................................................11
4.4.1 Sequence for LCD panel signal processing board.......................................................................11
4.4.2 Sequence for backlight inverter (Option).....................................................................................11
4.5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS.........................................................12
4.5.1 LCD panel signal processing board.............................................................................................12
4.5.2 Backlight lam p.............................................................................................................................13
4.5.3 Positions of plugs and a socket....................................................................................................13
4.6 DISPLAY COLORS AND INPUT DATA SIGNALS ..........................................................................14
4.7 DISPLAY POSI TI ONS.........................................................................................................................15
4.8 SCANNING DIRECTIONS.................................................................................................................15
4.9 INPUT SIGNAL TIMINGS FOR LCD PANEL SIGNAL PROCESSING BOARD...........................16
4.9.1 Outline of input signal timings ....................................................................................................16
4.9.2 T im ing characteristics..................................................................................................................17
4.9.3 Input signal timing chart..............................................................................................................19
4.10 OPTICS...............................................................................................................................................22
4.10.1 Optical characteristics for transmissive mode............................................................................22
4.10.2 Definition of contrast ratio.........................................................................................................23
4.10.3 Definition of luminance uniformity...........................................................................................23
4.10.4 Definition of response times......................................................................................................23
4.10.5 Definition of viewing angles......................................................................................................23
5. RELIABILITY TESTS.............................................................................................................................24
6. PRECAUTIONS .......................................................................................................................................25
6.1 MEANING OF CAUTION SIGNS......................................................................................................25
6.2 CAUTIONS..........................................................................................................................................25
6.3 ATTENTIONS......................................................................................................................................25
6.3.1 Handling of the product...............................................................................................................25
6.3.2 Environm ent.................................................................................................................................26
6.3.3 Characteristics..............................................................................................................................26
6.3.4 Other............................................................................................................................................26
7. OUTLINE DRAWINGS...........................................................................................................................27
7.1 FRONT VIEW......................................................................................................................................27
7.2 REAR VIEW ........................................................................................................................................28
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 4
1. OUTLINE
1.1 STRUCT U RE AN D PRI NCI PL E
NL6448BC33-54 module is composed of the amorphous silicon thin film transistor liquid crystal
display (a-Si TFT LCD) panel structure with driver LSIs for driving the TFT (Thin Film Transistor) array
and a backlight.
The a-Si TFT LCD panel stru cture is injected liquid crystal material into a na rrow gap between the TFT
array glass substrate and a color-filter glass substrate.
Color (Red, Green, Blue) data signals from a host system (e.g. PC, signal generator, etc.) are modulated
into best form for active matrix system by a signal processing board, and sent to the driver LSIs which
drive the individual TFT arrays.
The TFT array as an electro-optical switch regulates the amount of transmitted light from the backlight
assembly, when it is controlled by data signals. Color images are created by regulating the amount of
transmitted light through the TFT array of red, green and blue dots.
1.2 APPLI CATIONS
• Display terminal for control system
• Industrial PC
1.3 FEATURES
• High luminance
• High contrast
• 6-bit digital RGB signals
• DE (Data enable) function
• Reversible-scan direction
• Edge light type (Inverter less)
• Replaceable lamp for backlight
• Acquisition product for UL60950 3rd edition/CSA C22.2 No.60950 (File number: E170632)
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 5
2. GENERAL SPECIFICATIONS
Display area 211.2 (W) × 158.4 (H) mm (typ.)
Diagonal size of display 26 cm (10.4 inches)
Drive system a-Si TFT active matrix
Display color 262,144 colors
Pixel 640 (H) × 480 (V) pixels
Pixel arrangement RGB (Red dot, Green dot, Blue dot) vertical stripe
Dot pitch 0.11 (W) × 0.33 (H) mm
Pixel pitch 0.33 (W) × 0.33 (H) mm
Module size 243.0 (W) × 185.1 (H) × 10.5 (D) mm (typ.)
Weight 465 g (typ.)
Contrast ratio 350:1 (typ.)
Viewing angle At the contrast ratio 10:1
• Horizontal: Right side 45° (typ.), Left side 45° (typ.)
• Vertical: Up side 30° (typ.), Down side 20° (typ.)
Designed viewing direction At DPS= Low or Open: Normal scan
• Viewing direction without image reversal: down side (6 o'clock)
• Viewing direction with contrast peak: normal axis
• Viewing angle with optimum grayscale (γ=2.2): normal axis
Polarizer surface Clear
Polarizer pencil-hardness 3H (min.) [by JIS K5400]
Color gamut At LCD panel center
40 % (typ.) [against NTSC color space]
Response time Ton (white 90%
→
black 10%)
15 ms (typ.)
Luminance At IBL= 5.0mArms / lamp
220 cd/m2 (typ.)
Signal system 6-bit digital signals for data of RGB colors,
Dot clock (CLK), Data enable (DE),
Horizontal synchronous signal (Hsync),
Vertical synchronous signal (Vsync)
Power supply voltage LCD panel signal processing board: 3.3V or 5.0V
Backlight Edge light type: 2 cold cathode fluorescent lamps
Replaceable part
• Lamp holder set: Type No. 104LHS35
Recommended inverter (Option)
• Inverter: Type No.: 104PW161, 104PW191
Power consumption At IBL= 5.0mArms / lamp and checkered flag pattern
5.8 W (typ.)
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 6
3. BLOCK DIAGRAM
Note1: Connections between GND (Signal ground), FG (Frame ground) and VBLC (Lamp low voltage
terminal) in the LCD module
GND - FG Not connected
GND - VBLC Not connected
FG - V BLC Not connected
Note2: These grounds should be connected together in customer equipment.
Host
V-driver
1,920 lines
LCD panel
H: 640 × 3 (R,G,B)
V: 480
480 lines
VCC
CLK
B0 to B5
G0 to G5
R0 to R5
DPS
DE
Vsync
Hsync
GND
100Ω
100Ω
100Ω
100Ω
100Ω
100Ω
100Ω
47
k
Ω
LCD module (Product)
LCD panel signal processing board
Power supply
for gradation
DC/DC
converter
Fuse
Controller
H-driver
N
ote1
N
ote2
Backlight inverter
(Option) VBLH
VBLH
GNDB
VBLC
N
ote1
Backlight (Edge light type)
N
ote1
N
ote2
Lamp
Lam
p
Metallic frame of lamp holder
8.2
k
Ω
FG
N
ote1
N
ote2
VDDB
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 7
4. DETAILED SPECIFICATIONS
4.1 MECHANICAL SPECIFICATIONS
Parameter Specification Unit
Module size 243.0 ± 0.5 (W) × 185.1 ± 0.5 (H) × 10.5 ± 0.5 (D) Note1 mm
Display area 211.2 (W) × 158.4 (H) Note1 mm
Weight 465 (typ.), 490 (max.) g
Note1: See "7. OUTLINE DRAWINGS".
4.2 ABSOLUTE MA XI MUM RATI NGS
Parameter Symbol Rating Unit Remarks
LCD panel signal processing board VCC -0.3 to +6.5 V
Power supply
voltage Lamp voltage VB LH 1,500 Vrms
Display signals
Note1 VD -0.3 to VCC+0.3 V
Input voltage
for signals Function signal
Note2 VF -0.3 to VCC+0.3 V
Ta = 25°C
Storage temperatu r e Tst -20 to +80 °C-
Front surface TopF -10 to +70 °CNote3
Operatin g temperature Rear surface TopR -10 to +70 °CNote4
≤ 95 %Ta ≤ 40°C
Relative humidity
Note5 RH ≤ 85 %40 < Ta ≤ 50°C
Absolute humidity
Note5 AH ≤ 70
Note6 g/m3Ta > 50°C
Note1: Display signals are CLK, Hsync, Vsync, DE, R0 to R5, G0 to G5 and B0 to B5.
Note2: Function signal is DPS.
Note3: Measured at center of LCD panel surface (including self-heat)
Note4: Measured at center of LCD module's rear shield surface (including self-heat)
Note5: No condensati on
Note6: Ta = 50°C, RH = 85%
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 8
4.3 ELECTRICAL CHARACTERISTICS
4.3.1 Driving for LCD panel signal processing board (Ta = 25°C)
Parameter Symbol min. typ. max. Unit Remarks
3.0 3.3 3.6 V at VCC = 3.3V
Power supply voltage VCC 4.75 5.0 5.25 V at VCC = 5.0 V
-180
Note1 300
Note2 mA at VCC = 3.3V
Power supply current ICC -120
Note1 200
Note2 mA at VCC = 5.0V
Low VDL 0 - 0.3VCC V
Logic input voltage for
display signals High VDH 0.7VCC - VCC V
Low VFL 0 - 0.3VCC V
Inpu t voltage for DPS signal High VFH 0.7VCC - VCC V
CMOS level
Note1: Checkered flag pattern [by EIAJ ED-2522]
Note2: Pattern for maximum current
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 9
4.3.2 Working for backlight lamp (Ta=25°C, Note1)
Parameter Symbol min. typ. max. Unit Remarks
Lamp current IBL 2.0 5.0 5.5 mArms at IBL=5.0mArms:
220cd/m2
Note3, Note4
Lamp voltage VBLH - 520 - Vrms Note2, Note3
850 - - Vrms Ta = 25°C
Note2, Note3
Lamp starting voltage VS 1100 - - Vrms Ta = -10°C
Note2, Note3
Oscillation frequency FO 50 - 70 kHz Note5
Note1: This product's backlight consists of 2 lamps, and these specifications are for each lamp.
Note2: The lamp voltage cycle between lamps should be kept on a same phase. "VS" and "VBLH"
are the voltage value between low voltage side (Cold) and high voltage side (Hot).
Note3: The asymmetric ratio of working waveform for lamps (Lamp voltage peak ratio, Lamp
current peak ratio and waveform space ratio) should be less than 5 % (See the following
figure.). If the waveform is as ymmetric, DC (Direct current) element apply into the lamp. In
this case, a lamp lifetime may be shortened, because a distribution of a lamp enclosure
substance inclines toward one side between low voltage terminal (Cold terminal) and high
voltage terminal (Hot terminal).
Pa: Supply voltage/current peak for positive, Pb: Supply voltage/current peak for negative
Sa: Waveform space for positive part, Sb: Waveform space for negative part
Note4: This product consists of 2 lamps. 2 lamps contain in the 1 lamp holder, and both lamps are
connected to 1 low voltage cable. Lamp current must be 5.0mArms typical for each lamp,
and sum of 2 lamps must be 10mArms typical. The lamp current should be measured by
high-frequency current meter at the low voltage terminal.
Note5: In case "FO" is not the recommended value, beat noise may display on the screen, because
of interference between "FO" and "1/th". Recommended value of "FO" is as following.
th: Horizontal synchronous cycle (See "4.9 INPUT SIGNAL TIMINGS FOR LCD
PANEL SIGNAL PROCESSING BOARD".)
n: Natural number (1, 2, 3 ⋅⋅⋅⋅⋅⋅⋅⋅)
Note6: Method of lamp cable installation may invite fluctuation of lamp current and voltage or
asymmetric of lamp working waveform. When designing method of lamp cable installation,
evaluate the fluctuation of lamp current, voltage and working waveform sufficiently.
FO =1
41
th
××(2n-1)
Pa
Pb
Sa
Sb
0
Pa - Pb
Pb × 100 ≤ 5 %
Sa - Sb
Sb × 100 ≤ 5 %
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 10
4.3.3 Power supply voltage ripple
This product works, even if the ripple voltage levels are beyond the permissible values as following
the table, but there might be noise on the display image.
Parameter Power supply voltage Ripple voltage Note1
(Measure at input terminal of power supply) Unit
3.3 V ≤ 100 mVp-p
VCC 5.0 V ≤ 100 mVp-p
Note1: The permissible ripple voltage includes spike noise.
4.3.4 Fuse
Fuse
Parameter Type Supplier Rating F using current Remarks
1.6A
VCC FCC16162AB KAMAYA ELECTRIC
Co., Ltd. 32V 3.2A Note1
Note1:The power supply capacity should be more than the fusing current. If the power supply
capacity is less than the fusing current, the fuse may not blow for a short time, and then
nasty smell, smoking and so on may occur.
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 11
4.4 POWER SUPPL Y VOLTAGE SE QUE NCE
4.4.1 Sequence for LCD panel signal processing board
Note1: In terms of voltage variation (voltage drop) while VCC rising edge is below 3.0V in
"VCC = 3.3V" or 4.75V in "VCC = 5.0V", a protection circuit may work, and then this
product may not work.
Note2: Display (CLK, Hsync, Vsync, DE, R0 to R5, G0 to G5, B0 to B5) and function (DPS)
signal must be Low or High-impedance, exclude the VALID period (See above sequence
diagram), in order to avoid that internal circuits is damaged.
If some of display and function signals of this product are cut while this product is
working, even if the signal input to it once again, it might not work normally. If customer
stops the display and function signals, they should be cut VCC.
4.4.2 Sequence for backlight inverter (Option)
Note1: These are the display and function signals for LCD panel signal processing board.
Note2: The backlight inverter voltage (VDDB) should be inputted within the valid period of
display and function signals, in order to avoid unstable data display.
Display and
function signals
Note1
VDDB
VALID period
N
ote2
VALID period
OFF
0ms < t < 35ms 0ms < t < 35ms
ON
3.0V or 4.75 V
0V Tr < 30ms
VCC
N
ote1
Display and
function signals
Note2
Toff > 50ms
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 12
4.5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS
4.5.1 LCD panel signal processing board
CN1 socket (LCD module side): DF9C-31P-1V (Hirose Electric Co., Ltd.)
Adaptable plug: DF9-31S-1V (Hirose Electric Co., Ltd.)
Pin No. Symbol Signal Remarks
1 GND Ground
2CLK Dot clock
3 Hsync Horizontal synchronous
4 Vsync Vertical synchronous
5 GND Ground
-
6 R0 Red data (LSB) Least significant bit
7R1 Red data
8R2 Red data
9R3 Red data
10 R4 Red data
-
11 R5 Red data (MSB) Most significant bit
12 GND Ground -
13 G0 Green data (LSB) Least significant bit
14 G1 Green data
15 G2 Green data
16 G3 Green data
17 G4 Green data
-
18 G5 Green data (MSB) Most significant bit
19 GND Ground -
20 B0 Blue data (LSB) Least significant bit
21 B1 Blue data
22 B2 Blue data
23 B3 Blue data
24 B4 Blue data
-
25 B5 Blue data (MSB) Most significant bit
26 GND Ground -
27 DE Selection of DE / Fixed mode Data enab le signal: DE mod e
High or Open: Fixed mode Note1
28 VCC Power supply
29 VCC Power supply -
30 N.C. - Keep this terminal Open.
31 DPS Selection of scan direction High : R everse scan
Low or Open: Normal scan Note1
Note1: See "4.8 SCANNING DIRECTIONS".
✩
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 13
4.5.2 Backlight lam p
Attention: VBLH and VBLC must be connected correctly. If customer connects wrongly,
customer will be hurt and the module will be broken.
CN2 plug: BHR-03VS-1 (J.S.T Mfg. Co., Ltd.)
Adaptable socket: SM03 (4.0) B-BHS-TB (J.S.T Mfg. Co., Ltd.)
Pin No. Symbol Signal Remarks
1 VBLC Low voltage (Cold) Cable color: Gray
2 VBLH High voltage (Hot) Cable color: White
3 VBLH High voltage (Hot) Cable color: White
4.5.3 Positions of plugs and a socket
Barcode label
N
ame plate
CN2 Caution label
Low voltage (Cold)
High voltage (Hot)
1
3
CN1
1
31
2
30
3
Rear side
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 14
4.6 DISPLAY COLORS AND INPUT DATA SIGN AL S
This product can display in equivalent to 262,144 colors in 64 scale. Also the relation between
display colors and input data signals is as the following table.
Data signal (0: Low level, 1: High level)
Display colors R5 R4 R3 R2 R1 R0G5 G4 G3 G2 G1 G0B5 B4 B3 B2 B1 B0
Basic colors
Black
Blue
Red
Magenta
Green
Cyan
Yellow
White
000000
000000
111111
111111
000000
000000
111111
111111
000000
000000
000000
000000
111111
111111
111111
111111
000000
111111
000000
111111
000000
111111
000000
111111
Red scale
Black
dark
↑
↓
bright
Red
000000
000001
000010
:
:
111101
111110
111111
000000
000000
000000
:
:
000000
000000
000000
000000
000000
000000
:
:
000000
000000
000000
Green scale
Black
dark
↑
↓
bright
Green
000000
000000
000000
:
:
000000
000000
000000
000000
000001
000010
:
:
111101
111110
111111
000000
000000
000000
:
:
000000
000000
000000
Blue scale
Black
dark
↑
↓
bright
Blue
000000
000000
000000
:
:
000000
000000
000000
000000
000000
000000
:
:
000000
000000
000000
000000
000001
000010
:
:
111101
111110
111111
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 15
4.7 DISPLAY POSI TIONS
The following table is the coordinates per pixel (See "4.8 SCANNING DIRECTIONS".).
C (0, 0 )
RG B
C( 0, 0) C( 1, 0) • • •C( X, 0) • • •C(638, 0) C(639, 0)
C( 0, 1) C( 1, 1) • • •C( X, 1) • • •C(638, 1) C(639, 1)
•
•
•
•
•
•
•
• • •
•
•
•
•
•
• • •
•
•
•
•
•
• • •
•
C( 0, Y) C( 1, Y) • • •C( X, Y) • • •C(638, Y) C(639, Y)
•
•
•
•
•
•
•
• • •
•
•
•
•
•
• • •
•
•
•
•
•
•
•
C( 0,478) C( 1,478) • • •C( X,478) • • •C(638,478) C(639,478)
C( 0,479) C( 1,479) • • •C( X,479) • • •C(638,479) C(639,479)
4.8 SCANNING DIRECTIONS
The following figures are seen from a front view. Also the arrow shows the direction of scan.
Note1: Meaning of C (X, Y) and D (X, Y)
C (X, Y): The coordinates of the display position (See "4.7 DISPLAY POSITIONS".)
D (X, Y): The data number of input signal for LCD panel signal processing board
Figure 1. Normal scan (DPS: Low or Open)
C (0,0)
D (0,0)
C (0,479)
D (0,479)
C (639,479)
D (639,479)
C (639,0)
D (639,0)
N
ote1
Figure 2. Reverse scan (DPS: High)
C (0,0)
D (639,479)
C (0,479)
D (639,0)
C (639,479)
D (0,0)
C (639,0)
D (0,479)
N
ote1
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 16
4.9 INPUT SIGNAL TIMINGS FOR LCD PANEL SIGNAL PROCESSING BOARD
4.9.1 Outline of input signal timings
• Horizontal signal
Note1: Fixed mode cannot be used while working of DE mode.
Note2: This diagram indicates virtual signal for set up to timing.
• Vertical signal
Note1: Fixed mode cannot be used while working of DE mode.
Note2: This diagram indicates virtual signal for set up to timing.
Note3: See "4.9.3 Input signal timing chart" for numeration of pulse.
Horizontal back-porch (thb) Horizontal front-porch (thf)
Horizontal synchronizing pulse width (thp)
Horizontal synchronizing cycle (th)
Horizontal display period (thd)
Hsync
Note1
Display period
DE (Data enable)
Vertical back-porch (tvb ) Vertical front-porch (tvf)
Vertical synchronizing pulse width (tvp)
Vertical synchronizing cycle (tv)
Verti cal displa y peri od (tvd)
1234 480
Vsync
Note1
Display period
Note2
N
ote3
DE (Data enable)
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 17
4.9.2 T im ing characteristics
(a) Fixed mode (Note1)
Parameter Symbol min. typ. max. Unit Remarks
Frequenc y 1/tc 21.0 25.17 5 29.0 MHz 39.72 ns (ty p.)
Duty tcd 0.4 0.5 0.6 -
CLK Rise time, Fall time tcrf - - 1 0 ns -
Setup tim e tds 8 - - ns
CLK-DATA Hold time tdh 12 - - ns
DATA
(R0-R5)
(G0-G5)
(B0-B5) Rise time, Fall time tdrf - - 10 ns -
30.0 31.778 33.6
µ
s31.468 kHz (typ.)
Cycle th 800 CLK
Display period thd 640 CLK
Front-porch thf 16 CLK
Pulse width thp 10 96 - CLK
Back-porch thb - 48 134 CLK
Total of pulse width and back-porch thp + thb 144 CLK
Note2
Setup tim e ths 8 - - ns
CLK- Hsync Hold time thh 12 - - ns
Hsync
Rise time, Fall time thrf - - 10 ns -
16.1 16.683 17.2 ms 59.94 Hz (typ.)
Cycle tv 525 H
Display period tvd 480 H
Front-porch tvf 12 H
Pulse width tvp 1 2 - H
Back-porch tvb - 31 32 H
Total of pulse width and back-porch tvp + tvb 33 H
Note2
Hsync-Vsyn c timin g thv 1 - - CLK
V sync- Hsync timing tvh 30 - - ns
Vsync
Rise time, Fall time tvrf - - 10 ns -
Note1: Definition of parameters is as follows.
tc = 1CLK, tcd = tch/tc, th = 1H
Note2: Keep tvp + tvb and thp + thb within the table. If it is out of specification, display position
will be shifted to right/left side or up/down.
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 18
(b) DE mode (Note1, Note2)
Parameter Symbol min. typ. max. Unit Remarks
Frequenc y 1/tc 21.0 25.17 5 29.0 MHz 39.72 ns (ty p.)
Duty tcd 0.4 0.5 0.6 -
CLK Rise time, Fall time tcrf - - 10 ns -
Setup tim e tds 8 - - ns
CLK-DATA Hold time tdh 12 - - ns
DATA
(R0-R5)
(G0-G5)
(B0-B5) Rise time, Fall time tdrf - - 10 ns -
Pulse width tvp 1 2 - H
Setup tim e tvds 1 - - CLK
Vsync-DE
timing Hold time tvdh 1 - - CLK
Vsync
Rise time, Fall time tvrf - - 10
µ
s
-
30.0 31.778 33.6
µ
s31.468 kHz (typ.)
Cycle th - 800 - CLK
Horizontal Display period thd 640 CLK -
16.1 16.683 17.2 ms 59.94 Hz (typ.)
Cycle tv - 525 - H
Vertical
(One frame) Display period tvd 480 H -
Setup tim e tdes 8 - - ns
CLK-DE Hold time tdeh 12 - - ns
DE
Rise time, Fall time tderf - - 10 ns -
Note1: Definition of parameters is as follows.
tc = 1CLK, tcd = tch/tc, th = 1H
Note2: Hsync signal (Pin No.3 of CN1) is not used inside the product at DE mode.
Do not keep pin open to avoid noise problem.
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 19
4.9.3 Input signal timing chart
(a) Fixed mode
(Note: X=0 to 639)
1
CLK
Hsync
Hsync
Hsync
Hsync
Vsync
23
DATA
(R0-R5)
(G0-G5)
(B0-B5)
(Note: Y=0 to 479)
2
11
D(X,0) D(X,478)D(X,479)
D(X,Y) INVALID
INVALID
1
D(0,Y)D(1,Y) D(X,Y) D(638,Y)D(639,Y)
INVALID INVALID
D(0,Y)D(1,Y) D(639,Y)
INVALID INVALID
1CLK
144H (fixed) 640H (fixed)
thp thb thd thf
16H (fixed)
33H (fixed) 480H (fixed)
1H
tvp tvb tvd tvf
12H (fixed)
DATA
(R0-R5)
(G0-G5)
(B0-B5)
DATA
(R0-R5)
(G0-G5)
(B0-B5)
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 20
(b) DE mode
Horizontal timing
CLK
DE
DATA
(R0-R5)
(G0-G5)
(B0-B5)
INVALID INVALID1 2 639 640
thd
th
Vertical timing
Vsync
DE
DATA
(R0-R5)
(G0-G5)
(B0-B5)
INVALID INVALID
1 2 479 480
tvp
tvds tvdh
tvd
tv
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 21
(c) Common
0.7VCC
0.5VCC
0.3VCC
CLK
Hsync
thrf
thh ths
0.5VCC
0.7VCC
0.5VCC
0.3VCC
Hsync
Vsync
tvrf
thv tvh
0.5VCC
0.7VCC
0.5VCC
0.3VCC
tc
tcrf
tch
0.7VCC
0.5VCC
0.3VCC
INVALID
CLK
DATA
(R0-R5)
(G0-G5)
(B0-B5)
0.7VCC
0.5VCC
0.3VCC
tds tdh
tdrf
tdrf
tdeh tdes
tderf
tdeh tdes
tderf
DE
tcrf
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 22
4.10 OPTI CS
4.10.1 Optical characteristics
Parameter Note1 Condition Symbol min. typ. max. Unit Remarks
Luminance White at center
θR = 0°, θL = 0°, θU= 0°, θD= 0°L 150 220 - cd/m2-
Contrast ratio White/B lack at center
θR = 0°, θL = 0°, θU= 0°, θD= 0°CR 150 350 - - Note2
Luminance uniformity - LU - 1.25 1.40 - Note3
x coordinate Wx 0.256 0.286 0.316 -
White y coordinate Wy 0.290 0.320 0.350 -
x coordinate Rx -0.580 --
Red y coordinate Ry -0.332 --
x coordinate Gx -0.293 --
Green y coordinate Gy -0.536 --
x coordinate Bx -0.146 --
Chromaticity
Blue y coordinate By -0.119 --
Color gamut θR = 0°, θL = 0°, θU= 0°, θD= 0°
at center, against NTSC col or space C3540 -%
Note4
White to Black Ton - 15 40 ms
Response time Black to White Toff - 23 85 ms
Note5
Note6
Right θU = 0°, θD = 0°, CR = 10 θR35 45 - °
Left θU = 0 °, θD = 0°, CR = 10 θL35 45 - °
Up θR = 0°, θL = 0°, CR = 10 θU20 30 - °
Viewing angle
Down θR = 0°, θL = 0°, CR = 10 θD10 20 - °
Note7
Note1: Measurement conditions are as follows.
Ta=25°C, VCC=3.3V, IBL= 5.0mArms/lamp, Display mode: VGA, Horizontal cycle =
31.468kHz, Vertical cycle = 59.94Hz, DPS= Low or Open: Normal scan
Optical characteristics are measured at luminance saturation after 20minutes from working
the product, in the dark room. Also measurement method for luminance is as follows.
Note2: See "4.10.2 Definition of contrast ratio".
Note3: See "4.10.3 Definition of luminance uniformity".
Note4: These coordinates are found on CIE 1931 chromaticity diagram.
Note5: Product surface temperature: TopF = 31°C
Note6: See "4.10.4 Definition of r esponse tim es".
Note7: See "4.10.5 Definition of viewing angles".
1°
Photodetector (TOPCON BM-5A)
LCD module
(Product)
50cm
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 23
4.10.2 Definition of contrast ratio
The contrast ratio is calculated by using the following formula.
Luminance of white screen
Luminance of black screen
4.10.3 Definition of luminance uniformity
The luminance uniformity is calculated by using following formula.
Maximum luminance from ①
①①
① to ⑤
⑤⑤
⑤
Minimum luminance from ①
①①
① to ⑤
⑤⑤
⑤
The luminance is measured at near the 5 points shown below.
4.10.4 Definition of response times
Response time is measured, the luminance changes from "white" to "black", or "black" to "white" on
the same screen point, by photo-detector. Ton is the time it takes the luminance change from 90%
down to 10%. Also Toff is the time it takes the luminance change from 10% up to 90% (See the
following diagram.).
4.10.5 Definition of viewing angles
Contrast ratio (CR) =
Luminance uniformity (LU) =
100%
90%
10%
0%
Ton Toff
Luminance
White
Black
①
①①
①②
②②
②
③
③③
③
④
④④
④⑤
⑤⑤
⑤
106 320 533
80
240
400
Left Upper
Lower
N
ormal axis (Perpendicular)
θU
θD θR
θL12 o’cloc k
Right
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 24
5. RELIABILITY TESTS
Test item Condition Judgement
High temperature and humidity
(Operation) ① 60 ± 2°C, RH = 90%, 240hours
② Display data is black.
High temperature
(Operation) ① 70 ± 2°C, 240h ours
② Display data is black.
Heat cycle
(Operation)
① -10 ± 3°C…1hour
70 ± 3°C…1hour
② 50cycles, 4hours/cycle
③ Display data is black.
Thermal shock
(Non opera tion)
① -20 ± 3°C…30minutes
80 ± 3°C…30minutes
② 100cycles, 1hour/cycle
③ Temperature transition time is within 5
minutes.
ESD
(Operation)
① 150pF, 150Ω, ±10kV
② 9 places on a panel surface Note2
③ 10 times each places at 1 sec interval
Dust
(Operation)
① Sample dust: No. 15 (by JIS-Z8901)
② 15 seconds stir
③ 8 times repeat at 1 hour interval
No display malfunctions Note1
Vibration
(Non opera tion)
① 5 to 100Hz, 19.6m/s2
② 1 minut e/ cycl e
③ X, Y, Z direction
④ 120 times each d irections
Mechan ical shock
(Non opera tion)
① 539m/ s2, 11ms
② ±X, ±Y, ±Z direction
③ 5 times each di rections
No display malfunctions
No physic al damages Note1
Note1: Display and appearance are checked under environmental conditions equivalent to the
inspection conditions of defect criteria.
Note2: See the following figure for discharge points.
{{
{
{{
{
{{
{
✩
✩
✩
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 25
6. PRECAUTIONS
6.1 MEANING OF CAUTION SIGNS
The following caution signs have very important meaning. Be sure to read "10.2 CAUTIONS" and
"10.3 ATTENTIONS", after understanding this contents!
!
This sign has the meaning that customer will be injured by himself or the product will
sustain a damage, if customer has wrong operations.
This sign has the meaning that customer will get an electrical shock, if customer has
wrong operations.
This sign has the meaning that customer will be injured by himself, if customer has
wrong operations.
6.2 CAUTIONS
∗
∗∗
∗ Do not touch the working backlight. Customer will be in danger of an electric shock.
∗
∗∗
∗Do not touch the working backlight. Customer will be in danger of burn injury.
∗
∗∗
∗Do not shock and press the LCD panel and the backlight! There is a danger of breaking,
because they are made of glass. (Shock: To be not greater 539m/s2 and to be not greater
11ms, Pressure: To be not greater 19.6 N)
6.3 ATTENTIONS
!
6.3.1 Handling of the product
①Take hold of both ends without touch the circuit board cover when customer pulls out products
(LCD modules) from inner packing box. If customer touches it, products may be broken down or
out of adjustment, because of stress to mounting parts.
②Do not hook cables nor pull connection cables such as lamp cable and so on, for fear of damage.
③If customer puts down the product temporarily, the product puts on flat subsoil as a display side
turns down.
④Take the measures of electrostatic discharge such as earth band, ionic shower and so on, when
customer deals with the product, because products may be damaged by electrostatic.
⑤The torque for mounting screws must never exceed 0.294N⋅m. Higher torque values might result in
distortion of the bezel.
⑥The product must be installed using mounting holes without undue stress such as bends or twist
(See outline drawings). And do not add undue stress to any portion (such as bezel flat area) except
mounting hole portion.
Bends or twist described above and undue stress to any portion except mounting hole portion may
cause display un-uniformity.
NL6448BC33-54
DATA SHEET DOD-PD-0072 (2nd edition) 26
⑦Do not press or rub on the sensitive display surface. If customer clean on the panel surface, NEC
recommends using the cloth with ethanolic liquid such as screen cleaner for LCD.
⑧Do not push-pull the interface connectors while the product is working, because wrong power
sequence may break down the product.
⑨Do not bend or unbend the lamp cable at the near part of the lamp holding rubber, to avoid the
damage for high voltage side of the lamp. This damage may cause a lamp breaking and abnormal
operation of high voltage circuit.
6.3.2 Environm ent
①Do not operate or store in high temperature, high humidity, dewdrop atmosphere or corrosive gases.
Keep the product in antistatic pouch in room temperature, because of avoidance for dusts and
sunlight, if customer stores the product.
②In order to prevent dew condensation occurring by temperature difference, the product packing box
must be opened after leave under the environment of an unpacking room temperature enough.
Because a situation of dew condensation occurring is changed by the environmental temperature
and humidity, evaluate the leaving time sufficiently. (Recommendation leaving t i me: 6 hour or more
with packing state)
③Do not operate in high magnetic field. Circuit boards may be broken down by it.
④This product is not designed as radiation hardened.
⑤Use an original protection sheet on the product surface (polarizer). Adhesive type protection sheet
should be avoided, because it may change color or properties of the polarizer.
6.3.3 Characteristics
The following items are neither defects nor failures.
①Response time, luminance and color may be changed by ambient temperature.
②The LCD may be seemed luminance non-uniformity, flicker, vertical seam or small spot by display
patterns.
③Optical characteristics (e.g. luminance, display uniformity, etc.) gradually is going to change
depending on operating time, and especially low temperature, because the LCD has cold cathode
fluorescent lamps.
④Do not display the fixed pattern for a long time because it may cause image sticking. Use a screen
saver, if the fixed pattern is displayed on the screen.
⑤The display color may be changed by viewing angle because of the use of condenser sheet in the
backlight.
⑥Optical characteristics may be changed by input signal timings.
⑦The interference noise of input signal frequency for this product's signal processing board and
luminance control frequency of customer's backlight inverter may appear on a display. Set up
luminance control frequency of backlight inverter so that the interference noise does not appear.
6.3.4 Other
①All GND, backlight inverter ground (GNDB), VCC and backlight inverter power supply voltage
(VDDB) terminals should be used without a non-connected line.
②Do not disassemble a product or adjust volume without permission of NEC.
③See "REPLACEMENT MANUAL FOR LAMP HOLD ER SET", if customer would like to replace
backlight lamps.
④Pay attention not to insert waste materials inside of products, if customer uses screwnails.
⑤Pack the product with original shipping package, because of avoidance of some damages during
transportation, when customer returns it to NEC for repair and so on.