Datasheet NL6448BC20-21C Datasheet (NEC)

TFT COLOR LCD MODULE

NL6448BC20-21C

17cm (6.5 Type)

VGA

PRELIMINARY DATA SHEET

DOD-PP-0321 (2nd edition)

This PRELIMINARY DATA SHEET is updated
document from DOD-PP-0269(1).

All information is subject to change without notice.
Please confirm the sales representative before
starting to design your system.

Document Number: DOD-PP-0321 (2nd edition)
Published date: July 2007 CP(N)

1

© NEC LCD Technologies, Ltd.

2007 All rights reserved.

NL6448BC20-21C

INTRODUCTION

The Copyright to this document belongs to NEC LCD Technologies, Ltd. (hereinafter called "NEC").

No part of this document will be used, reproduced or copied without prior written consent of NEC.

NEC does and will not assume any liability for infringement of patents, copyrights or other intellectual
property rights of any third party arising out of or in connection with application of the products
described herein except for that directly attributable to mechanisms and workmanship thereof. No license,
express or implied, is granted under any patent, copyright or other intellectual property right of NEC.

Some electronic parts/components would fail or malfunction at a certain rate. In spite of every effort to
enhance reliability of products by NEC, the possibility of failures and malfunction might not be avoided
entirely. To prevent the risks of damage to death, human bodily injury or other property arising out
thereof or in connection therewith, each customer is required to take sufficient measures in its safety
designs and plans including, but not limited to, redundant system, fire-containment and anti-failure.

The products are classified into three quality grades: "Standard", "Special", and "Specific" of the
highest grade of a quality assurance program at the choice of a customer. Each quality grade is designed
for applications described below. Any customer who intends to use a product for application other than
that of Standard quality grade is required to contact an NEC sales representative in advance.

The Standard quality grade applies to the products developed, designed and manufactured in
accordance with the NEC standard quality assurance program, which are designed for such application as
any failure or malfunction of the products (sets) or parts/components incorporated therein a customer
uses are, directly or indirectly, free of any damage to death, human bodily injury or other property, like
general electronic devices.
Examples: Computers, office automation equipment, communications equipment, test and measurement

equipment, audio and visual equipment, home electronic appliances, machine tools, personal
electronic equipment, industrial robots, etc.

The Special quality grade applies to the products developed, designed and manufactured in accordance
with an NEC quality assurance program stricter than the standard one, which are designed for such
application as any failure or malfunction of the products (sets) or parts/components incorporated therein
a customer uses might directly cause any damage to death, human bodily injury or other property, or
such application under more severe condition than that defined in the Standard quality grade without
such direct damage.
Examples: Control systems for transportation equipment (automobiles, trains, ships, etc.), traffic control

systems, anti-disaster systems, anti-crime systems, medical equipment not specifically
designed for life support, safety equipment, etc.

The Specific quality grade applies to the products developed, designed and manufactured in accordance
with the standards or quality assurance program designated by a customer who requires an extremely
higher level of reliability and quality for such products.
Examples: Military systems, aircraft control equipment, aerospace equipment, nuclear reactor control

systems, medical equipment/devices/systems for life support, etc.

The quality grade of this product is the "Standard" unless otherwise specified in this document.

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

2

NL6448BC20-21C

CONTENTS

INTRODUCTION ..........................................................................................................................................2

1. OUTLINE....................................................................................................................................................4

1.1 STRUCTURE AND PRINCIPLE...........................................................................................................4

1.2 APPLICA TION.......................................................................................................................................4

1.3 FEATURES.............................................................................................................................................4

2. GENERAL SPECIFICATIONS ................................................................................................................5

3. BLOCK DIAGRAM...................................................................................................................................6

4. DETAILED SPECIFICATIONS...............................................................................................................8

4.1 MECHANICAL SPECIFICATIONS......................................................................................................8

4.2 ABSOLUTE MAXIMUM RATINGS....................................................................................................8

4.3 ELECTRICAL CHARACTERISTICS...................................................................................................9

4.3.1 LCD panel signal processing board...............................................................................................9

4.3.2 Backlight......................................................................................................................................10

4.3.3 Power supply voltage ripple.........................................................................................................10

4.3.4 Fuse..............................................................................................................................................10

4.4 POWER SUPPLY VOLTAGE SEQUENCE........................................................................................11

4.4.1 LCD panel signal processing board.............................................................................................11

4.4.2 LED lighting circuit.....................................................................................................................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 plug and socket ........................................................................................................13

4.5.4 Connection between receiver and transmitter for LVDS .............................................................14

4.5.5 Input data mapping ......................................................................................................................17

4.6 DISPLAY COLORS AND INPUT DATA SIGNALS ..........................................................................19

4.6.1 Combinations between input data signals and FRC signal..........................................................19

4.6.2 16,777,216 colors.........................................................................................................................20

4.6.3 262,144 colors..............................................................................................................................21

4.7 DISPLAY POSITIONS.........................................................................................................................22

4.8 SCANNING DIRECTIONS.................................................................................................................22

4.9 INPUT SIGNAL TIMINGS..................................................................................................................23

4.9.1 Outline of input signal timings ....................................................................................................23

4.9.2 Timing characteristics..................................................................................................................24

4.9.3 Input signal timing chart..............................................................................................................25

4.10 OPTICS...............................................................................................................................................26

4.10.1 Optical characteristics................................................................................................................26

4.10.2 Definition of contrast ratio.........................................................................................................27

4.10.3 Definition of luminance uniformity...........................................................................................27

4.10.4 Definition of response times......................................................................................................27

4.10.5 Definition of viewing angles......................................................................................................27

5. RELIABILITY TESTS.............................................................................................................................28

6. PRECAUTIONS .......................................................................................................................................29

6.1 MEANING OF CAUTION SIGNS......................................................................................................29

6.2 CAUTIONS..........................................................................................................................................29

6.3 A TTENTI ONS......................................................................................................................................29

6.3.1 Handling of the product...............................................................................................................29

6.3.2 Environment.................................................................................................................................30

6.3.3 Characteristics..............................................................................................................................30

6.3.4 Other............................................................................................................................................30

7. OUTLINE DRAWINGS...........................................................................................................................31

7.1 FRONT VIEW......................................................................................................................................31

7.2 REAR VIEW ........................................................................................................................................32

REVISION HISTORY.................................................................................................................................33

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

3

1. OUTLINE

1.1 STRUCTURE AND PRINCIPLE

Color LCD module NL6448BC20-21C 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. 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 APPLICATION

• For industrial use

1.3 FEATURES

• Adoption of ST-NLT (Super-Transmissive Natural Light TFT)

• High luminance

• High contrast

• Wide viewing angle

• Wide temperature range

• LVDS interface

• Reversible-scan direction

• Selectable 8bit or 6bit digital signals for data of RGB

• LED backlight type

• Replaceable LED holder for backlight

NL6448BC20-21C

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

4

2. GENERAL SPECIFICATIONS

Display area
Diagonal size of display

NL6448BC20-21C

132.48 (H) × 99.36 (V) mm
17cm (6.5 inches)

Drive system

Display color

Pixel
Pixel arrangement
Dot pitch
Pixel pitch
Module size
Weight
Contrast ratio

Viewing angle

Designed viewing direction

Polarizer surface
Polarizer pencil-hardness

a-Si TFT active matrix
16,777,216 colors (At 8-bit input, FRC terminal= High)

262,144 colors (At 6-bit input, FRC terminal= Low or Open)
640 (H) × 480 (V) pixels

RGB (Red dot, Green dot, Blue dot) vertical stripe

0.0690 (H) × 0.2070 (V) mm

0.2070 (H) × 0.2070 (V) mm

153.0 (W) × 118.0 (H) × 9.0 (D) mm (typ.)
TBD g (typ.)
600:1 (typ.)

At the contrast ratio

≥

10:1

• Horizontal: Right side 80° (typ.), Left side 80° (typ.)

• Vertical: Up side 80° (typ.), Down side 60° (typ.)

At DPS= Low or open: normal scan

• Viewing direction without image reversal: up side (12 o'clock)

• Viewing direction with contrast peak: down side (6 o'clock)

• Viewing angle with optimum grayscale (γ=2.2): normal axis

Clear + Antireflection (AR)
3H (min.) [by JIS K5400]

2

2

Color gamut

Response time

Luminance

At LCD panel center

(36) % (typ.) [against NTSC color space]

Ton+Toff (10%

←→

90%)

25 ms (typ.)

At IL= 10 mA

800 cd/m

2

(typ.)

2

LVDS 1port

Signal system

(Receiver: THC63LVDF84B, THine Electronics Inc. or equivalent)
8bit/6bit digital signals for data of RGB colors, Dot clock (CLK),
Data enable (DE)

Power supply voltage

LCD panel signal processing board: 3.3V
LED backlight type:

Backlight

Replaceable part

• LED holder set: Type No. 65LHS13

Power consumption

At IL= 10 mA, Checkered flag pattern

TBD W (typ.)

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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3. BLOCK DIAGRAM

Host

D0+

D0­D1+

D1­D2+

D2­D3+

D3-

CLK+

CLK-

MSL
DPS
FRC

GND

Note1
Note2

VCC

FG

Note1
Note2

Anode1-6

Cathode1-6

Note1: Relations between GND (Signal ground), FG (Frame ground) in the LCD module are as

follows.

GND - FG Connected

Note2: GND and FG must be conn ected to customer equipment’s ground, and it is recommended that

these grounds are connected together in customer equipment.

LCD module (Product)

100Ω

100Ω

100Ω

100Ω

Controller with receiver for LVDS

100Ω

Power supply

for gradation

47kΩ

50kΩ

50kΩ

DC/DC

Fuse

LCD panel signal processing board

converter

6
6

NL6448BC20-21C

H-driver

1,920 lines

LCD panel

H: 640 × 3 (R, G, B)
V: 480

480 lines

V-driver

Backlight Note3

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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NL6448BC20-21C

Note3: Backlight in detail

Anode 1

Cathode 1

Anode 2

Cathode 2

Anode 3

Cathode 3

Anode 4

Cathode 4

Anode 5

Cathode 5

Anode 6

Cathode 6

Backlight

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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4. DETAILED SPECIFICATIONS

4.1 MECHANICAL SPECIFICATIONS

Parameter Specification Unit

NL6448BC20-21C

Module size
Display area

Weight TBD (typ.), TBD (max.) g

Note1: See "7. OUTLINE DRAWINGS".

4.2 ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Rating Unit Remarks

Power supply

voltage

Input voltage

for signals

Backlight

Operating temperature

LCD panel signal processing

Display signals

Function signal

Power dissipation PD 1.1 W per one circuit
Forward current IL Note4 mA
Pulse forward current IFP Note5 mA

Storage temperature Tst -30 to +80

Relative humidity

Note8

Absolute humidity

Note8

Note1: Display signals are D0+/-, D1+/-, D2+/-, D3+/- and CLK+/-.

Note2: Fu nction signal 1 is DPS, FRC.

Note3: If the product surface (polarizer) is exposed to an ultraviolet ray, the polarizer may discolor

(Surface treatment may be damaged.). Use a filter to protect the polarizer from the ultraviolet
ray.

153.0 ± 0.5 (W) × 118.0 ± 0.5 (H) × 9 (typ)

132.48 (H) × 99.36 (V)

board

Note1

Note2

Front surface TopF -20 to +70

Rear surface TopR -20 to +70

VCC -0.3 to +4.0 V

VD

-0.3 to VCC+0.3 V

VF

RH

AH

≤ 95
≤ 85
≤ 55
≤ 36

≤ 70

Note9

Note1 mm
Note1 mm

-

per one circuit

°C
°C
°C

%
%
%
%

3

g/m

­Note6
Note7

Ta ≤ 40°C

40°C <Ta≤ 50°C
50°C <Ta≤ 60°C
60°C <Ta≤ 70°C

Ta> 70°C

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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Note4: Forward current Note5: Pulse forward current

20
18
16
14
12
10

8
6
4
2
0

0

20 40 60 80 100

Allowable forward current IL (mA)

Operating temperature (rear surface)Ta [°C]

Note6: Measured at center of LCD panel surface (including self-heat)
Note7: Measured at center of LCD module's rear shield surface (including self-heat)
Note8: No condensation
Note9: Water amount at Ta = 70°C and RH = 36%

4.3 ELECTRICAL CHARACTERISTICS

4.3.1 LCD panel signal processing board

NL6448BC20-21C

(mA)

Allowable pulse forward current IFP

Duty ratio (%)

(Ta= 25°C)

Parameter Symbol min. typ. max. Unit Remarks
Power supply voltage VCC 3.0 3.3 3.6 V ­Power supply current ICC -

Permissible ripple voltage VRP - - 100 mVp-p for VCC

Differential input threshold
voltage for LVDS receiver

Terminating resistance RT - 100 -

Input voltage for
DPS, FRC and MSL signals

Input current for FRC and MSL
signal

High VTH - - +100 mV

Low VTL -100 - - mV

High VFH 0.7VCC - VCC V

VFL 0 - 0.3VCC V

Low

High IFH - - 300

IFL -300 - -

Low

TBD

Note1

TBD

Note2

mA at VCC = 3.3V

at VCM=1.2V

Note3

Ω

μA
μA

-

CMOS level

-

Note1: Checkered flag pattern [by EIAJ ED-2522]
Note2: Pattern for maximum current
Note3: Common mode voltage for LVDS receiver

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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4.3.2 Backlight

Parameter Symbol min. typ. max. Unit Remarks

Forward current IL - 10 TBD mA Note3

Forward Voltage VL - 26.82 TBD V at IL= 10 mA

Note1: Please drive with constant current .
Note2: The

Luminance uniformity may be changed depending on the current variation between 6 circuits.

It is recommended that the current value difference between each circuit is less than 5%.

Note3: See "4.2 ABSOLUTE MAXIMUM RATINGS Note4".

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.

Power supply voltage

NL6448BC20-21C

Ripple voltage Note1

(Measure at input terminal of power supply)

(Ta=25°C)

Unit

VCC 3.3V

≤ 100

Note1: The permissible ripple voltage includes spike noise.

4.3.4 Fuse

Parameter

VCC

Type Supplier

TBD TBD

Fuse

Rating Fusing current Remarks

TBD

TBD

TBD

Note1: The power supply capacity should be more than the fusing current. If it is less than the fusing

current, the fuse may not blow in a short time, and then nasty smell, smoke and so on may
occur.

mVp-p

Note1

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

10

4.4 POWER SUPPLY VOLTAGE SEQUENCE

4.4.1 LCD panel signal processing board

VCC
Note1

0V

3.0V

Display signals*
Function signals

Note2

0V

0ms < t < 35ms

* These signals should be measured at the terminal of 100Ω resistance.

Note1: In terms of voltage variation (voltage drop) while VCC rising edge is below 3.0V, a protection

circuit may work, and then this product may not work.

Note2: Display signals (D0+/-, D1+/-, D2+/-, D3+/- and CLK+/-) and function signals (DPS, FRC

and MSL) 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 LED lighting circuit

Display and

function signals

Note1

LED backlight: ON

Note1: These are the display and function signals for LCD panel signal processing board.
Note2: The backlight should be turned on within the valid p eriod of display and function signals, in

order to avoid unstable data display.

ON

10μs≤ Tr < 50ms

VALID period

Note2

VALID period

NL6448BC20-21C

OFF

Toff ≥ 50ms

0ms < t < 35ms

ON

0.3V

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

11

4.5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS

4.5.1 LCD panel signal processing board

CN1 socket (LCD module side): FI-SE20P-HFE (Japan Aviation Electronics Industry Limited (JAE))
Adaptable plug: FI-S20S (Japan Aviation Electronics Industry Limited (JAE))

Pin No. Symbol Signal

A D3+ Pixel data R0-R1,G0-G1,B0-B1 R6-R7,G6-G7,B6-B7 -

1

B GND Ground - - - Note4
A D3- Pixel data R0-R1,G0-G1,B0-B1 R6-R7,G6-G7,B6-B7

2

B GND Ground - - - Note4

3 DPS

4 FRC

5 GND Ground - - - Note4

6 CLK+

7 CLK-

Selection
of scan direction

Selection signal of
frame rate control

Pixel clock - - - Note3

Input data signal: 8bit

MAP A MAP B

High : Frame rate control ON

High : Reverse scan
Low or Open : Normal scan

NL6448BC20-21C

Input data

signal: 6bit

- Note1,

Low or Open

: Frame rate
control OFF

Remarks

Note1,

Note3

Note3

Note2

Note1

8 GND Ground - - - Note4

9 D2+

Pixel data B4-B7,DE B2-B5,DE B2-B5,DE Note3

10 D2-

11 GND Ground - - - Note4

12 D1+

Pixel data G3-G7,B2-B3 G1-G5,B0-B1 G1-G5,B0-B1 Note3

13 D1-

14 GND Ground - - - Note4

15 D0+

Pixel data R2-R7,G2 R0-R5,G0 R0-R5,G0 Note3

16 D0-

17 GND Ground - - - Note4

18 MSL

19 VCC

20 VCC

Selection of LVDS
input map

Power supply - - - Note4

Low High Low Note4

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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4.5.2 Backlight lamp

CN2 plug (LCD module side): DF14A-15P-1.25H (Hirose Electric Co., Ltd.(HRS))
Adaptable socket: DF14-15S-1.25C (Hirose Electric Co., Ltd.(HRS))

Pin No. Symbol Signal Remarks

1 A1 Anode1 ­2 K1 Cathode1 ­3 A2 Anode2 ­4 K2 Cathode2 ­5 A3 Anode3 ­6 K3 Cathode3 ­7 A4 Anode4 ­8 K4 Cathode4 -

9 A5 Anode5 ­10 K5 Cathode5 ­11 A6 Anode6 ­12 K6 Cathode6 ­13 N. C. - Keep this pin Open.
14 N. C. - Keep this pin Open.
15 N. C. - Keep this pin Open.

4.5.3 Positions of plug and socket

1

15

Insert direction

CN2

NL6448BC20-21C

Rear side

1

CN1

20

Insert direction

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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4.5.4 Connection between receiver and transmitter for LVDS

(1) Input data signal: 8bit , MAP A

Note2

R2
R3
R4
R5
R6
R7
G2

G3
G4
G5
G6
G7
B2
B3

B4
B5
B6

B7
Note4
Note4

DE

R0

R1

G0

G1

B0

B1
Note4

CLK

VCC

GND

DPS
FRC

MSL

TA0
TA1
TA2
TA3
TA4
TA5
TA6

TB0
TB1
TB2
TB3
TB4
TB5
TB6

TC0
TC1
TC2
TC3
TC4
TC5
TC6

TD0
TD1
TD2
TD3
TD4
TD5
TD6
CLK IN

LVDS transmitter
THC63LVDM83R or equivalent

Host

Note1

Note3

TD+

TD-

TCLK+

TCLK-

TC+

TC-

TB+

TB-

TA+

TA-

GND

Note1: Recommended transmitter THC63LVDM83R (THine Electronics Inc.) or equivalent
Note2: LSB (Least Significant Bit) - R0, G0, B0 MSB (Most Significant Bit) - R7, G7, B7
Note3: Twist pair wires with 100Ω (Characteristic impedance) should be used between LCD panel

signal processing board and LVDS transmitter.

Note4: Input signals to TC4,TC5 and TD6 are not used inside the product, but do not keep TC4,TC5

and TD6 open to avoid noise problem.

1A
2A

3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

NL6448BC20-21C

LCD module (Product)

D3+

D3-

DPS
FRC

GND
CLK+
CLK-

GND

D2+

D2-

GND

D1+

D1-

GND

D0+

D0­GND
MSL
VCC
VCC

CN1

LCD panel signal processing board

RD+
RD-

RCLK+
RCLK-

RC+
RC-

RB+
RB-

RA+
RA-

Receiver for LVDS

Equivalent of

THC63LVDF84B

LCD controller

GND

Signal

processor

MSL

DPS

FRC

VCC

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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NL6448BC20-21C

(2) Input data signal: 8bit , MAP B

Note2

R0
R1
R2
R3
R4
R5
G0

G1
G2
G3
G4
G5
B0
B1

B2
B3
B4

B5
Note4
Note4

DE

R6

R7

G6

G7

B6

B7
Note4

CLK

VCC

GND

DPS
FRC

MSL

TA0
TA1
TA2
TA3
TA4
TA5
TA6

TB0
TB1
TB2
TB3
TB4
TB5
TB6

TC0
TC1
TC2
TC3
TC4
TC5
TC6

TD0
TD1
TD2
TD3
TD4
TD5
TD6
CLK IN

LVDS transmitter
THC63LVDM83R or equivalent

Note1: Recommended transmitter THC63LVDM83R (THine Electronics Inc.) or equivalent
Note2: LSB (Least Significant Bit) - R0, G0, B0 MSB (Most Significant Bit) - R7, G7, B7
Note3: Twist pair wires with 100Ω (Characteristic impedance) should be used between LCD panel

signal processing board and LVDS transmitter.

Note4: Input signals to TC4,TC5 and TD6 are not used inside the product, but do not keep TC4,TC5

and TD6 open to avoid noise problem.

Host

Note1

TD+

TD-

TCLK+

TCLK-

TC+

TC-

TB+

TB-

TA+

TA-

GND

Note3

1A
2A

3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

LCD module (Product)

D3+

D3-

DPS
FRC

GND

CLK+

CLK-
GND

D2+

D2-

GND

D1+

D1-

GND

D0+

D0­GND
MSL
VCC
VCC

CN1

LCD panel signal processing board

RD+
RD-

RCLK+
RCLK-

RC+
RC-

RB+
RB-

RA+
RA-

Receiver for LVDS

Equivalent of

THC63LVDF84B

LCD controller

GND

Signal

processor

MSL

VCC

DPS

FRC

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

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NL6448BC20-21C

(3) Input data signal: 6bit

Note2

R0
R1
R2
R3
R4
R5
G0

G1
G2
G3
G4
G5
B0
B1

B2
B3
B4

B5
Note4
Note4

DE

CLK

VCC

GND

DPS
FRC

MSL

TA0
TA1
TA2
TA3
TA4
TA5
TA6

TB0
TB1
TB2
TB3
TB4
TB5
TB6

TC0
TC1
TC2
TC3
TC4
TC5
TC6

CLK IN

LVDS transmitter
THC63LVDM83R or equivalent

Note1: Recommended transmitter THC63LVDM83R (THine Electronics Inc.) or equivalent
Note2: LSB (Least Significant Bit) – R0, G0, B0 MSB (Most Significant Bit) – R5, G5, B5
Note3: Twist pair wires with 100Ω (Characteristic impedance) should be used between LCD panel

signal processing board and LVDS transmitter.

Note4: Input signals to TC4 and TC5 are not used inside the product, but do not keep TC4 and TC5

open to avoid noise problem.

Host

Note1

TCLK+

TCLK-

TC+

TC-

TB+

TB-

TA+

TA-

GND

LCD module (Product)

Note3

1B
2B

3
4
5
6
7
8
9

10

11
12
13
14
15
16
17
18
19
20

GND
GND

DPS
FRC

GND
CLK+
CLK-

GND

D2+

D2-

GND

D1+

D1-

GND

D0+

D0-

GND

MSL
VCC
VCC

CN1

LCD panel signal processing board

RCLK+
RCLK-

RC+
RC-

RB+
RB-

RA+
RA-

Receiver for LVDS

Equivalent of

THC63LVDF84A

LCD controller

GND

Signal

processor

MSL

VCC

DPS

FRC

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

16

4.5.5 Input data mapping

(1) Input data signal: 8bit , MAP A

CLK

CLK+

D0+/-

D1+/-

D2+/-

D3+/-

(2) Input data signal: 8bit , MAP B

CLK

CLK+

D0+/-

D1+/-

D2+/-

D3+/-

DE

DE

-

B1

B0 B1

-

B7

NL6448BC20-21C

tc

1CLK

R2 R3 R4 R5 R6 R7 G2

B2 B3

tc

-

B0

G5

-

B6

G7

1CLK

G5 G6

B5 B6 B7

R1 G0 G1

G3 G4

B3 B4 B5

R7 G6 G7

G3 G4

B4

R0

R0 R1 R2 R3 R4 R5 G0

G1 G2

B2

R6

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

17

NL6448BC20-21C

(3) Input data signal: 6bit

CLK

CLK+

D0+/-

D1+/-

D2+/-

DE

B0 B1

-

tc

1CLK

R0 R1 R2 R3 R4 R5 G0

G5

-

G3 G4

B3 B4 B5

G1 G2

B2

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

18

4.6 DISPLAY COLORS AND INPUT DATA SIGNALS

4.6.1 Combinations between input data signals and FRC signal

This product can display in equivalent to 16,777,216 colors in 256 gray scales and 262,144 colors in

64 gray scales by combination between input data signals and FRC signal. See following table.

Combination

①

Input data

signals

8 bit Map A D3+/- High Low 16,777,216 Note1

Input Data

mapping

CN1-

Pin No.1 and 2

FRC

terminal

MSL

terminal

NL6448BC20-21C

Display

colors

Remarks

②

③

8 bit Map B D3+/- High High 16,777,216 Note1

6 bit - GND Low or open Low 262,144 Note2

Note1: See "4.6.2 16,777,216 colors".
Note2: See "4.6.3 262,144 colors".

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

19

4.6.2 16,777,216 colors

This product can display equivalent of 16,777,216 colors in 256 gray scales by combination ① and

②.

(See "4.6.1 Combinations between input data signals and FRC signal".)
Also the relation between display colors and input data signals is as the following table.

Display colors

Basic Colors

Red gray scale

Green gray scale

Blue gray scale

Black

Blue

Red

Magenta

Green

Cyan

Yellow

White

Black

dark

↑
↓

bright

Red

Black

dark

↑
↓

bright

Green

Black

dark

↑
↓

bright

Blue

NL6448BC20-21C

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

R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0
00000000

00000000
11111111
11111111
00000000
00000000
11111111
11111111
00000000
00000001
00000010

:

:
11111101
11111110
11111111
00000000
00000000
00000000

:

:
00000000
00000000
00000000
00000000
00000000
00000000

:

:
00000000
00000000
00000000

00000000
00000000
00000000
00000000
11111111
11111111
11111111
11111111
00000000
00000000
00000000

:

:
00000000
00000000
00000000
00000000
00000001
00000010

:

:
11111101
11111110
11111111
00000000
00000000
00000000

:

:
00000000
00000000
00000000

00000000
11111111
00000000
11111111
00000000
11111111
00000000
11111111
00000000
00000000
00000000

:

:
00000000
00000000
00000000
00000000
00000000
00000000

:

:
00000000
00000000
00000000
00000000
00000001
00000010

:

:
11111101
11111110
11111111

2

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

20

4.6.3 262,144 colors

This product can display equivalent of 262,144 colors in 64 gray scales by combination ③.
(See "4.6.1 Combinations between input data signals and FRC signal".)
Also the relation between display colors and input data signals is as the following table.

Display colors

Basic colors

Red gray scale

Green gray scale

Blue gray scale

Black

Blue

Red

Magenta

Green

Cyan

Yellow

White

Black

dark

↑
↓

bright

Red

Black

dark

↑
↓

bright

Green

Black

dark

↑
↓

bright

Blue

NL6448BC20-21C

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

R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
000000

000000
111111
111111
000000
000000
111111
111111
000000
000001
000010

:

:
111101
111110
111111
000000
000000
000000

:

:
000000
000000
000000
000000
000000
000000

:

:
000000
000000
000000

000000
000000
000000
000000
111111
111111
111111
111111
000000
000000
000000

:

:
000000
000000
000000
000000
000001
000010

:

:
111101
111110
111111
000000
000000
000000

:

:
000000
000000
000000

000000
111111
000000
111111
000000
111111
000000
111111
000000
000000
000000

:

:
000000
000000
000000
000000
000000
000000

:

:
000000
000000
000000
000000
000001
000010

:

:
111101
111110
111111

2

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

21

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( 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

∙
∙
∙

∙
∙
∙

∙

∙ ∙ ∙

∙

∙

∙ ∙ ∙

∙

C (0, 0)
D (0, 0)

C (0, 479)
D (0, 479)

∙
∙
∙

∙
∙
∙

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

C (639, 479)
D (639, 479)

∙

∙ ∙ ∙

∙

∙

∙ ∙ ∙

∙

Note1

Figure1. Normal scan (DPS: Low or Open)

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

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

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

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

Note1

Figure2. Reverse scan (DPS: High)

NL6448BC20-21C

∙
∙
∙

∙
∙
∙

∙

∙ ∙ ∙

∙

∙
∙
∙

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

22

4.9 INPUT SIGNAL TIMINGS

4.9.1 Outline of input signal timings

• Horizontal signal

Note1

DE (Data enable)

Display period

• Vertical signal

Note1

DE (Data enable)

Display period

Note1: This diagram indicates virtual signal for set up to timing.
Note2: See "4.9.3 Input signal timing chart" for numeration of pulse.

NL6448BC20-21C

Horizontal display period (thd)

Vertical display period (tvd)

1

2

34

480

Note2

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

23

4.9.2 Timing characteristics

CLK

DATA

DE

Note1: Definition of parameters is as follows.

Note2: See the data sheet of LVDS transmitter.
Note3: Vertical cycle (tv) should be specified in integral multiple of Horizontal cycle (th).

NL6448BC20-21C

(Note1, Note2, Note3)

Parameter Symbol min. typ. max. Unit Remarks

Frequency 1/tc 21.0 25.175 29.0 MHz 39.72ns (typ.)

Duty - -

Rise time, Fall time -

CLK-DATA

Rise time, Fall time -

Horizontal

Vertical

(One frame)

CLK-DE

Rise time, Fall time -

Setup time - ns

Hold time - ns

Cycle th

Display period thd 640 CLK -

Cycle tv

Display period tvd 480 H

Setup time - ns

Hold time - ns

tc = 1CLK, th = 1H

30.0 31.778 33.6

- 800 - CLK

16.1 16.683 17.2 ms

- 525 - H

-

-

-

ns

ns
μs

ns

31.468kHz (typ.)

-

-

59.94Hz (typ.)

-

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

24

4.9.3 Input signal timing chart

Horizontal timing

CLK

DATA
(R0-R7) (R0-R5)
(G0-G7) or (G0-G5)
(B0-B7) (B0-B5)

DE

Vertical timing

DATA
(R0-R7) (R0-R5)
(G0-G7) or (G0-G5)
(B0-B7) (B0-B5)

DE

INVALID

INVALID

tc

1 2 639 640

thd

1 2 479 480

tvd

tv

NL6448BC20-21C

INVALID

th

INVALID

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

25

4.10 OPTICS

4.10.1 Optical characteristics

Parameter Condition Symbol min. typ. max. Unit

Luminance

Contrast ratio

Luminance uniformity

White

Red

Chromaticity

Green

Blue

Color gamut

Response time

Right

Viewing angle

Left

Up

Down

Note1: These are initial characteristics.
Note2: Measurement conditions are as follows.

Ta = 25°C, VCC = 3.3V, IL = 10mA, Display mode: VGA, Horizontal cycle = 1/48.363kHz,
Vertical cycle = 1/60.0Hz, DPS= Low or Open, FRC= Low or Open

Optical characteri stics ar e measur ed at luminance saturation after 20minutes from working

the product, in the dark room. Also measurement methods are as follows.

LCD module
(Product)

Note3: See "4.10.2 Definition of contrast ratio".
Note4: See "4.10.3 Definition of luminance uniformity".
Note5: These coord inates are found on CIE 1931 chromaticity diagram.
Note6: Product surface temperature: TopF = TBD°C
Note7: See "4.10.4 Definition of response times".
Note8: See "4.10.5 Definition of viewing angles".

White at center

θR= 0°, θL= 0°, θU= 0°, θD= 0°

White/Black at center

θR= 0°, θL= 0°, θU= 0°, θD= 0°

White

θR= 0°, θL= 0°, θU= 0°, θD= 0°

x coordinate Wx TBD TBD TBD -
y coordinate Wy TBD TBD TBD -
x coordinate Rx - TBD - -
y coordinate Ry - TBD - -
x coordinate Gx - TBD - -
y coordinate Gy - TBD - -
x coordinate Bx - TBD - -
y coordinate By - TBD - -

θR= 0°, θL= 0°, θU= 0°, θD= 0°

at center, against NTSC color space

White to Black Ton - 6 15 ms
Black to White Toff - 19 47 ms

θU= 0°, θD= 0°, CR≥ 10 θR
θU= 0°, θD= 0°, CR≥ 10 θL
θR= 0°, θL= 0°, CR≥ 10 θU
θR= 0°, θL= 0°, CR≥ 10 θD

50cm

1°

Photodetector (BM-5A or SR-3)

NL6448BC20-21C

(Note1, Note2)

Measuring
instrument

2

L TBD 800 - cd/m

CR TBD 600 - - BM-5A Note3

LU - 1.25 1.4 - BM-5A Note4

C TBD (36) - %

70 80 ­70 80 ­70 80 ­50 60 -

Photodetector (EZ Contrast)

LCD module
(Product)

BM-5A -

SR-3 Note5

BM-5A

°
°

Contrast

°
°

EZ

Remarks

Note6
Note7

Note8

2

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

26

N

θ

4.10.2 Definition of contrast ratio

The contrast ratio is calculated by using the following formula.

Contrast ratio (CR) =

4.10.3 Definition of luminance uniformity

The luminance uniformity is calculated by using following formula.

Luminance uniformity (LU) =

The luminance is measured at near the 5 points shown below.

80

240

400

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. To n 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%

4.10.5 Definition of viewing angles

Left

Lower

Luminance of white screen

Luminance of black screen

106

320

①

③

④

Ton

ormal axis (Perpendicular)

θL

θU

θD

Maximum luminance from ①
Minimum luminance from ①

533

②

⑤

12 o’clock

Upper

R

Right

NL6448BC20-21C

to ⑤

to ⑤

Toff

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

27

5. RELIABILITY TESTS

Test item Condition Judgment

High temperature and humidity

(Operation)

Heat cycle

(Operation)

Thermal shock

(Non operation)

(Operation)

(Operation)

Vibration

(Non operation)

Mechanical shock

(Non operation)

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.

ESD

Dust

① 60 ± 2°C, RH= 90%, 240hours
② Display data is black.

① -20 ± 3°C…1hour

70 ± 3°C…1hour

② 50cycles, 4 hours/cycle
③ Display data is black.

① -30 ± 3°C…30minutes

80 ± 3°C…30minutes

② 100cycles, 1hour/cycle
③ Temperature transition time is within

5 minutes.

① 150pF, 150Ω, ±10kV
② 9 places on a panel surface Note2
③ 10 times each places at 1 sec interval

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/s
② 1 minute/cycle
③ X, Y, Z direction
④ 120 times each directions

① 539m/ s
② ±X, ±Y, ±Z direction
③ 5 times each directions



 

 

2

, 11ms

 





2

NL6448BC20-21C

(Note1)

No display malfunctions

No display malfunctions
No physical damages

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

28

!

6. PRECAUTIONS

6.1 MEANING OF CAUTION SIGNS

The following caution signs have very important meaning. Be sure to read "6.2 CAUTIONS" and

"6.3 ATTENTIONS", after understanding these 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 be injured by himself, if customer has

wrong operations.

6.2 CAUTIONS

∗ Do not touch the working backlight. There is a 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/s
11ms, Pressure: To be not greater 19.6 N (φ16mm jig))

NL6448BC20-21C

2

and to be not greater

6.3 ATTENTIONS

6.3.1 Handling of the product

① Take hold of both ends without touching the circuit board when the product (LCD module) is

picked up from inner packing box to avoid broken down or misadjustment, because of stress to
mounting parts on the circuit board.

② When the product is put on the table temporarily, display surface must be placed downward.
③ When handling the product, take the measures of electrostatic discharge with such as earth band,

ionic shower and so on, because the product may be damaged by electrostatic.

④ The torque for product mounting screws must never exceed 0.147N⋅m. Higher torque might result

in distortion of the bezel.

⑤ 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). Bends
or twist described above and undue stress to any portion may cause display mura.

⑥ Do not press or rub on the sensitive product surface. When cleaning the product surface, use of the

cloth with ethanolic liquid such as screen cleaner for LCD is recommended.

⑦ Do not push nor pull the interface connectors while the product is working.
⑧ When handling the product, use of an original protection sheet on the product surface (polarizer) is

recommended for protection of product surface. Adhesive type protection sheet may change color
or characteristics of the polarizer.

⑨ Usually liquid crystals don't leak through the breakage of glasses because of the surface tension of

thin layer and the construction of LCD panel. But, if you contact with liquid crystal for the worst,
please wash it out with soap.

!

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

29

6.3.2 Environment

① Do not operate or store in high temperature, high humidity, dewdrop atmosphere or corrosive gases.

② In order to prevent dew condensation occurring by temperature difference, the product packing

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.

6.3.3 Characteristics

The following items are neither defects nor failures.

① Characteristics of the LCD (such as response time, luminance, color uniformity and so on) may be

② Display mura, flicker, vertical seam or small spot may be observed depending on display pat tern s .
③ Do not display the fixed pattern for a long time because it may cause image sticking. Use a screen

④ The display color may be changed depending on viewing angle because of the use of condenser

⑤ Optical characteristics may be changed depending on input signal timings.
⑥ The product gives AR (antireflection) coating of the polarizer surface. Though AR (antireflection)

6.3.4 Other

① All GND and VCC terminals should be used without any non-connected lines.
② Do not disassemble a product or adjust variable resistors.
③ See "REPLACEMENT MANUAL FOR LED HOLDER SET", when replacing backlight.
④ Pay attention not to insert foreign materials inside of the product, when using tapping screws.
⑤ Pack the product with original shipping package, in order to avoid any damages during

NL6448BC20-21C

Keep the product in packing box with antistatic pouch in room temperature to avoid dusts and
sunlight, when storing the product.

box should be opened after enough time being left under the environment of an unpacking room.
Evaluate the leaving time sufficiently because a situation of dew condensation occurring is
changed by the environmental temperature and humidity. (Recommended leaving time: 6 hours or
more with packing state)

changed depending on ambient temperature. If the product is stored under condition of low
temperature for a long time, it may cause display mura. In this case, the product should be operated
after enough time being left under condition of operating temperature.

saver, if the fixed pattern is displayed on the screen.

sheet in the backlight.

coating actualizes the low reflection with the multilayer structure, the color of reflection may differ
between products and the color change of reflection may occur in the same product by fluctuation
of AR (antireflection) coating.

transportation, when returning the product to NEC for repair and so on.

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

30

7. OUTLINE DRAWINGS

7.1 FRONT VIEW

Note1: The values in parentheses are for reference.
Note2: The torque for product mounting screws must never exceed 0.147N⋅m.

NL6448BC20-21C

Unit: mm

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

31

7.2 REAR VIEW

Note1: The values in parentheses are for reference.
Note2: The torque for product mounting screws must never exceed 0.147N⋅m.

NL6448BC20-21C

2

Unit: mm

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

32

NL6448BC20-21C

REVISION HISTORY

The inside of latest specifications is revised to the clerical error and the major improvement of previous
edition. Only a changed part such as functions, characteristic value and so on that may affect a design of
customers, are described especially below.

Edition

1st

edition

Document

number

DOD-PP­0269

Prepared

date

June 26,
2007

Revision contents

New issue

Writer

Approved by

T. OGAWA

Revision contents and signature

Checked by

Prepared by

T. OGAWA

2nd

edition

DOD-PP­0321

July 19,
2007

Revision contents

P5 General specifications

• Pixel: 648 (H) → 640 (H) (correction)

• Designed viewing direction: Viewing direction without image reversal: up side (12

o'clock) and Viewing direction with contrast peak: down
side (6 o'clock) (addition)

2

• Luminance: (650) cd/m

P20, P21 Display colors and input data signals

• 16,777,216 colors: combination ① → combination ① and ② (correction)

• 262,144 colors: combination ② → combination ③ (correction)

P26 Optical characteristics

• Luminance: (650) cd/m

P32 Outline drawings

• Rear view: 65BLM13 → 65BLM14 (correction)

Signature of writer

Approved by

T. OGAWA

(typ.) → 800 cd/m2 (typ.) (change)

2

(typ.) → 800 cd/m2 (typ.) (change)

Checked by

Prepared by

A. KUMANO

PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)

33