TFT COLOR LCD MODULE
NL6448BC33-54
26.4cm (10.4 Type)
VGA
DATA SHEET
DOD-PD-0072 (2nd edition)
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.
Document Number: DOD-PD-0072 (2nd edition)
Published date: June 2003 CP(N)
1
NEC LCD Technologies, Ltd.
2003 All rights reserved.
NL6448BC33-54
INTRODUCTION
No part of this document shall be copied in any form or by any means without the prior written consent
of NEC LCD Technologies, Ltd. (hereinafter called "NEC").
NEC 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 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 sufficient 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 systems, 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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
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 lamp.............................................................................................................................13
4.5.3 Positions of plugs and a socket ....................................................................................................13
4.6 DISPLAY COLORS AND INPUT DATA SIGNALS ..........................................................................14
4.7 DISPLAY POSITIONS.........................................................................................................................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 Timing 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 Environment.................................................................................................................................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
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
1. OUTLINE
1.1 STRUCTURE AND PRINCIPLE
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 structure is injected liquid crystal material into a narrow 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 APPLICATIONS
• 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)
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
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.)
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
3. BLOCK DIAGRAM
Host
LCD module (Product)
100Ω
H-driver
R0 to R5
100Ω
G0 to G5
100Ω
B0 to B5
100Ω
Hsync
1,920 lines
100Ω
V-driver
100Ω
DE
47kΩ
480 lines
Vsync
Controller
100Ω
CLK
LCD panel
H: 640 × 3 (R,G,B)
V: 480
DPS
8.2kΩ
Power supply
for gradation
GND
Note1
Note2
VCC
Fuse
FG
Note1
Note2
DC/DC
converter
LCD panel signal processing board
Backlight (Edge light type)
VBLH
VDDB
GNDB
Note1
Note2
Backlight inverter
(Option)
VBLH
VBLC
Note1
Lamp
Lamp
Metallic frame of lamp holder
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 - VBLC
Not connected
Note2: These grounds should be connected together in customer equipment.
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NL6448BC33-54
4. DETAILED SPECIFICATIONS
4.1 MECHANICAL SPECIFICATIONS
Parameter
Specification
Unit
243.0 ± 0.5 (W) × 185.1 ± 0.5 (H) × 10.5 ± 0.5 (D)
Module size
211.2 (W) × 158.4 (H)
Display area
Weight
Note1
mm
Note1
mm
465 (typ.), 490 (max.)
g
Note1: See "7. OUTLINE DRAWINGS".
4.2 ABSOLUTE MAXIMUM RATINGS
Parameter
Power supply
voltage
Symbol
Rating
Unit
LCD panel signal processing board
VCC
-0.3 to +6.5
V
Lamp voltage
VBLH
1,500
Vrms
Display signals
Note1
VD
-0.3 to VCC+0.3
V
Function signal
Note2
VF
-0.3 to VCC+0.3
V
Tst
-20 to +80
°C
-
Front surface
TopF
-10 to +70
°C
Note3
Rear surface
TopR
-10 to +70
°C
Note4
≤ 95
%
Ta ≤ 40°C
≤ 85
%
40 < Ta ≤ 50°C
≤ 70
Note6
g/m3
Ta > 50°C
Input voltage
for signals
Storage temperature
Remarks
Ta = 25°C
Operating temperature
Relative humidity
Note5
RH
Absolute humidity
Note5
AH
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 condensation
Note6: Ta = 50°C, RH = 85%
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.3 ELECTRICAL CHARACTERISTICS
4.3.1 Driving for LCD panel signal processing board
(Ta = 25°C)
Parameter
Symbol
Power supply voltage
VCC
min.
typ.
max.
Unit
Remarks
3.0
3.3
3.6
V
at VCC = 3.3V
4.75
5.0
5.25
V
at VCC = 5.0V
180
Note1
120
Note1
300
Note2
200
Note2
mA
at VCC = 3.3V
mA
at VCC = 5.0V
Power supply current
ICC
-
Logic input voltage for
display signals
Low
VDL
0
-
0.3VCC
V
High
VDH
0.7VCC
-
VCC
V
Low
VFL
0
-
0.3VCC
V
High
VFH
0.7VCC
-
VCC
V
CMOS level
Input voltage for DPS signal
Note1: Checkered flag pattern [by EIAJ ED-2522]
Note2: Pattern for maximum current
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.3.2 Working for backlight lamp
(Ta=25°C, Note1)
Parameter
Symbol
min.
typ.
max.
Unit
Lamp current
IBL
2.0
5.0
5.5
mArms
Lamp voltage
VBLH
-
520
-
Vrms
850
-
-
Vrms
1100
-
-
Vrms
50
-
70
kHz
Lamp starting voltage
Oscillation frequency
VS
FO
Remarks
at IBL=5.0mArms:
220cd/m2
Note3, Note4
Note2, Note3
Ta = 25°C
Note2, Note3
Ta = -10°C
Note2, Note3
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 asymmetric, 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
0
Sa
Sb
Pb
Pa - Pb
× 100 ≤ 5 %
Pb
Sa - Sb × 100 ≤ 5 %
Sb
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.
1
1
× (2n-1)
×
FO =
th
4
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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
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
5.0 V
≤ 100
mVp-p
VCC
Note1: The permissible ripple voltage includes spike noise.
4.3.4 Fuse
Parameter
VCC
Fuse
Type
Supplier
FCC16162AB
KAMAYA ELECTRIC
Co., Ltd.
Rating
Fusing current
Remarks
3.2A
Note1
1.6A
32V
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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.4 POWER SUPPLY VOLTAGE SEQUENCE
4.4.1 Sequence for LCD panel signal processing board
OFF
ON
3.0V or 4.75V
VCC
Note1
0V
Toff > 50ms
Tr < 30ms
Display and
function signals
Note2
VALID period
0ms < t < 35ms
0ms < t < 35ms
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)
Note2
Display and
function signals
Note1
VALID period
VDDB
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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
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
2
CLK
Dot clock
3
Hsync
Horizontal synchronous
4
Vsync
Vertical synchronous
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)
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
-
Least significant bit
-
-
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)
26
GND
Ground
27
DE
Selection of DE / Fixed mode
28
VCC
Power supply
29
VCC
Power supply
30
N.C.
-
31
DPS
Selection of scan direction
-
Most significant bit
Data enable signal: DE mode
High or Open:
Fixed mode
Note1
Keep this terminal Open.
High:
Reverse scan
Low or Open: Normal scan
✩
Note1
Note1: See "4.8 SCANNING DIRECTIONS".
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.5.2 Backlight lamp
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
2
3
VBLC
VBLH
VBLH
Low voltage (Cold)
High voltage (Hot)
High voltage (Hot)
Cable color: Gray
Cable color: White
Cable color: White
4.5.3 Positions of plugs and a socket
Low voltage (Cold)
CN2
1
3
Rear side
Caution label
High voltage (Hot)
1
3
2
30
31
CN1
Barcode label
DATA SHEET DOD-PD-0072 (2nd edition)
Name plate
13
NL6448BC33-54
4.6 DISPLAY COLORS AND INPUT DATA SIGNALS
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.
Display colors
Basic colors
Red scale
Black
Blue
Red
Magenta
Green
Cyan
Yellow
White
Black
dark
↑
↓
bright
Red
Black
Green scale
dark
↑
↓
bright
Green
Black
Blue scale
dark
↑
↓
bright
Blue
Data signal (0: Low level, 1: High level)
R 5 R 4 R 3 R 2 R 1 R 0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
0
0
1
1
0
0
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
1
0
1
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
0
1
1
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
0
0
0
1
0
1
0
1
0
1
0
0
0
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DATA SHEET DOD-PD-0072 (2nd edition)
0
1
0
1
0
1
0
1
0
0
0
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
1
1
1
0
1
1
1
0
1
:
:
1
1
1
0
0
0
0
1
1
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
:
:
:
:
0
0
0
0
1
0
1
0
1
0
1
0
0
0
:
:
0
0
0
0
0
0
1
1
1
0
0
0
:
:
0
0
0
0
0
0
0
1
1
1
1
0
0
0
:
:
:
:
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
:
:
:
:
1
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
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NL6448BC33-54
4.7 DISPLAY POSITIONS
The following table is the coordinates per pixel (See "4.8 SCANNING DIRECTIONS".).
C (0, 0 )
R
G
B
C(
0,
0)
C(
1,
0)
•••
C(
X, 0)
•••
C(638,
0)
C(639,
0)
C(
0,
1)
C(
1,
1)
•••
C(
1)
C(639,
1)
X, 1)
•••
C(638,
•
•
•
•
•
•
•
•••
•
•
•
•
•
•••
•
•
•
•
•
•••
•
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.
C (0,0)
C (639,0)
D (0,0)
D (639,0)
C (0,479)
C (639,479)
D (0,479)
D (639,479)
Note1
Figure 1. Normal scan (DPS: Low or Open)
C (0,0)
C (639,0)
D (639,479)
D (0,479)
C (0,479)
C (639,479)
D (639,0)
D (0,0)
Note1
Figure 2. Reverse scan (DPS: High)
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
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.9 INPUT SIGNAL TIMINGS FOR LCD PANEL SIGNAL PROCESSING BOARD
4.9.1 Outline of input signal timings
• Horizontal signal
Horizontal synchronizing cycle (th)
Horizontal synchronizing pulse width (thp)
Hsync
Note1
Horizontal back-porch (thb)
Horizontal front-porch (thf)
Display period
Horizontal display period (thd)
DE (Data enable)
Note1: Fixed mode cannot be used while working of DE mode.
Note2: This diagram indicates virtual signal for set up to timing.
• Vertical signal
Vertical synchronizing cycle (tv)
Vertical synchronizing pulse width (tvp)
Vsync
Note1
Vertical back-porch (tvb)
Vertical front-porch (tvf)
Display period
Note2
Vertical display period (tvd)
DE (Data enable)
1
2
3
4
480
Note3
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.
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NL6448BC33-54
4.9.2 Timing characteristics
(a) Fixed mode
(Note1)
CLK
DATA
(R0-R5)
(G0-G5)
(B0-B5)
Hsync
Vsync
Parameter
Frequency
Duty
Rise time, Fall time
Setup time
CLK-DATA
Hold time
Symbol
1/tc
tcd
tcrf
tds
tdh
min.
21.0
0.4
8
12
typ.
25.175
0.5
-
max.
29.0
0.6
10
-
Unit
MHz
ns
ns
ns
Rise time, Fall time
tdrf
-
-
10
ns
Cycle
th
30.0
33.6
Display period
Front-porch
Pulse width
Back-porch
Total of pulse width and back-porch
Setup time
CLK- Hsync
Hold time
Rise time, Fall time
thd
thf
thp
thb
thp + thb
ths
thh
thrf
Cycle
tv
Display period
Front-porch
Pulse width
Back-porch
Total of pulse width and back-porch
Hsync-Vsync timing
Vsync-Hsync timing
Rise time, Fall time
tvd
tvf
tvp
tvb
tvp + tvb
thv
tvh
tvrf
31.778
800
640
16
96
48
144
16.683
525
480
12
2
31
33
-
µs
CLK
CLK
CLK
CLK
CLK
CLK
ns
ns
ns
ms
H
H
H
H
H
H
CLK
ns
ns
10
8
12
16.1
1
1
30
-
134
10
17.2
32
10
Remarks
39.72 ns (typ.)
-
31.468 kHz (typ.)
Note2
59.94 Hz (typ.)
Note2
-
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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
(b) DE mode
(Note1, Note2)
CLK
DATA
(R0-R5)
(G0-G5)
(B0-B5)
Vsync
Parameter
Frequency
Duty
Rise time, Fall time
Setup time
CLK-DATA
Hold time
Symbol
1/tc
tcd
tcrf
tds
tdh
min.
21.0
0.4
8
12
typ.
25.175
0.5
-
max.
29.0
0.6
10
-
Unit
MHz
ns
ns
ns
Rise time, Fall time
tdrf
-
-
10
ns
Pulse width
Setup time
Vsync-DE
timing
Hold time
Rise time, Fall time
tvp
tvds
tvdh
tvrf
1
1
1
30.0
-
2
31.778
800
640
16.683
525
480
-
10
33.6
-
H
CLK
CLK
µs
µs
CLK
CLK
ms
H
H
ns
ns
ns
Horizontal
DE
Vertical
(One frame)
Cycle
th
Display period
thd
Cycle
tv
Display period
Setup time
CLK-DE
Hold time
Rise time, Fall time
tvd
tdes
tdeh
tderf
16.1
8
12
-
17.2
10
Remarks
39.72 ns (typ.)
-
-
31.468 kHz (typ.)
59.94 Hz (typ.)
-
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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.9.3 Input signal timing chart
(a) Fixed mode
Vsync
1H
tvp
tvb
tvd
33H (fixed)
tvf
12H (fixed)
480H (fixed)
Hsync
1 2
1
3
Hsync
DATA
(R0-R5)
(G0-G5)
(B0-B5)
D(X,0)
INVALID
D(X,478)D(X,479)
D(X,Y)
INVALID
(Note: X=0 to 639)
Hsync
DATA
(R0-R5)
(G0-G5)
(B0-B5)
D(0,Y)D(1,Y)
INVALID
Hsync
D(X,Y)
D(638,Y)D(639,Y)
INVALID
1CLK
thp
thb
thf
thd
640H (fixed)
144H (fixed)
16H (fixed)
CLK
1
2
1
DATA
(R0-R5)
(G0-G5)
(B0-B5)
INVALID
D(0,Y)D(1,Y)
D(639,Y)
INVALID
(Note: Y=0 to 479)
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
(b) DE mode
Horizontal timing
CLK
DATA
(R0-R5)
(G0-G5)
(B0-B5)
INVALID
1
2
639 640
INVALID
DE
thd
th
Vertical timing
tvp
Vsync
DATA
(R0-R5)
(G0-G5)
(B0-B5)
INVALID
INVALID
1 2
tvds
479 480
tvdh
DE
tvd
tv
DATA SHEET DOD-PD-0072 (2nd edition)
20
NL6448BC33-54
(c) Common
tc
tch
CLK
0.7VCC
0.5VCC
0.3VCC
tcrf
tcrf
tds
DATA
0.7VCC
(R0-R5)
(G0-G5) 0.5VCC
(B0-B5) 0.3VCC
tdrf
tdrf
tdeh
DE
tdh
INVALID
tdes
tdeh
0.7VCC
0.5VCC
0.3VCC
tderf
CLK
tdes
tderf
0.5VCC
thh
ths
0.7VCC
Hsync 0.5VCC
0.3VCC
thrf
Hsync
0.5VCC
thv
Vsync
0.7VCC
0.5VCC
0.3VCC
tvh
tvrf
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.10 OPTICS
4.10.1 Optical characteristics
Parameter
Note1
Condition
Symbol
min.
typ.
max.
Unit
Remarks
L
150
220
-
cd/m2
-
CR
150
350
-
-
Note2
-
LU
-
1.25
1.40
-
Note3
x coordinate
Wx
0.256
0.286
0.316
-
y coordinate
Wy
0.290
0.320
0.350
-
x coordinate
Rx
-
0.580
-
-
y coordinate
Ry
-
0.332
-
-
x coordinate
Gx
-
0.293
-
-
y coordinate
Gy
-
0.536
-
-
White at center
θR = 0°, θL = 0°, θU = 0°, θD = 0°
White/Black at center
θR = 0°, θL = 0°, θU = 0°, θD = 0°
Luminance
Contrast ratio
Luminance uniformity
White
Red
Chromaticity
Green
x coordinate
Bx
-
0.146
-
-
y coordinate
By
-
0.119
-
-
θR = 0°, θL = 0°, θU = 0°, θD = 0°
at center, against NTSC color space
C
35
40
-
%
White to Black
Ton
-
15
40
ms
Black to White
Toff
-
23
85
ms
Right
θU = 0°, θD = 0°, CR = 10
θR
35
45
-
Left
θU = 0°, θD = 0°, CR = 10
θL
35
45
-
Up
θR = 0°, θL = 0°, CR = 10
θU
20
30
-
Down
θR = 0°, θL = 0°, CR = 10
θD
10
20
-
°
°
°
°
Blue
Color gamut
Response time
Viewing angle
Note4
Note5
Note6
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.
50cm
Photodetector (TOPCON BM-5A)
LCD module 1°
(Product)
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 response times".
Note7: See "4.10.5 Definition of viewing angles".
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
4.10.2 Definition of contrast ratio
The contrast ratio is calculated by using the following formula.
Luminance of white screen
Contrast ratio (CR) =
Luminance of black screen
4.10.3 Definition of luminance uniformity
The luminance uniformity is calculated by using following formula.
Maximum luminance from ① to ⑤
Luminance uniformity (LU) =
Minimum luminance from ① to ⑤
The luminance is measured at near the 5 points shown below.
106
320
533
①
80
②
③
240
④
400
⑤
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.).
White
100%
90%
Luminance
Black
10%
0%
Toff
Ton
4.10.5 Definition of viewing angles
Normal axis (Perpendicular)
12 o’clock
θL
Left
θD
Lower
θU
Upper
θR
Right
DATA SHEET DOD-PD-0072 (2nd edition)
23
NL6448BC33-54
5. RELIABILITY TESTS
Test item
Condition
Judgement
① 60 ± 2°C, RH = 90%, 240hours
② Display data is black.
✩
High temperature
(Operation)
① 70 ± 2°C, 240hours
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.
High temperature and humidity
(Operation)
① -20 ± 3°C…30minutes
80 ± 3°C…30minutes
② 100cycles, 1hour/cycle
③ Temperature transition time is within 5
minutes.
Thermal shock
(Non operation)
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
① 5 to 100Hz, 19.6m/s2
② 1 minute/cycle
③ X, Y, Z direction
④ 120 times each directions
Vibration
(Non operation)
No display malfunctions
No physical damages
Note1
① 539m/ s2, 11ms
② ±X, ±Y, ±Z direction
③ 5 times each directions
Mechanical shock
(Non operation)
No display malfunctions 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.
{
{
{
{
{
{
{
{
{
DATA SHEET DOD-PD-0072 (2nd edition)
24
NL6448BC33-54
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
① Take 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.
② Do not hook cables nor pull connection cables such as lamp cable and so on, for fear of damage.
③ If customer puts down the product temporarily, the product puts on flat subsoil as a display side
turns down.
④ Take 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.
⑤ The torque for mounting screws must never exceed 0.294N⋅m. Higher torque values might result in
distortion of the bezel.
⑥ The 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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
⑦ Do 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.
⑧ Do not push-pull the interface connectors while the product is working, because wrong power
sequence may break down the product.
⑨ Do 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 Environment
① Do 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.
② In 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 time: 6 hour or more
with packing state)
③ Do not operate in high magnetic field. Circuit boards may be broken down by it.
④ This product is not designed as radiation hardened.
⑤ Use 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.
① Response time, luminance and color may be changed by ambient temperature.
② The LCD may be seemed luminance non-uniformity, flicker, vertical seam or small spot by display
patterns.
③ Optical 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.
④ Do 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.
⑤ The display color may be changed by viewing angle because of the use of condenser sheet in the
backlight.
⑥ Optical characteristics may be changed by input signal timings.
⑦ The 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
① All GND, backlight inverter ground (GNDB), VCC and backlight inverter power supply voltage
(VDDB) terminals should be used without a non-connected line.
② Do not disassemble a product or adjust volume without permission of NEC.
③ See "REPLACEMENT MANUAL FOR LAMP HOLDER SET", if customer would like to replace
backlight lamps.
④ Pay attention not to insert waste materials inside of products, if customer uses screwnails.
⑤ Pack 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.
DATA SHEET DOD-PD-0072 (2nd edition)
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NL6448BC33-54
7. OUTLINE DRAWINGS
7.1 FRONT VIEW
Note1: The values in parentheses are for reference.
Note2: The torque for mounting screws must never exceed 0.294N⋅m.
Note3:
Mounting hole portions (4 pieces)
DATA SHEET DOD-PD-0072 (2nd edition)
Unit: mm
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NL6448BC33-54
7.2 REAR VIEW
Note1: The values in parentheses are for reference.
Note2: The torque for mounting screws must never exceed 0.294N⋅m.
DATA SHEET DOD-PD-0072 (2nd edition)
Unit: mm
28