NEC NL6448B DATA SHEET

TFT COLOR LCD MODULE

NL6448BC33-64

26 cm (10.4 Type) VGA

DATA SHEET

DOD-PP-0228 (3rd edition)

This DATA SHEET is updated document from

DOD-PP-0108 (2).

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

Document Number: DOD-PP-0228 (3rd edition)	1	© NEC LCD Technologies, Ltd.
Published date: April 2007 CP(N)		2006-2007, All rights reserved.

NL6448BC33-64

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.

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	NL6448BC33-64
CONTENTS
INTRODUCTION ........................................................................................................................................	2
1. OUTLINE..................................................................................................................................................	4
1.1 STRUCTURE AND PRINCIPLE ........................................................................................................	4
1.2 APPLICATION ....................................................................................................................................	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 LCD panel signal processing board .............................................................................................	8
4.3.2 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 LCD panel signal processing board ...........................................................................................	11
4.4.2 Inverter .....................................................................................................................................	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
4.6 DISPLAY COLORS AND INPUT DATA SIGNALS.......................................................................	14
4.7 DISPLAY POSITIONS ......................................................................................................................	15
4.8 SCANNING DIRECTIONS ...............................................................................................................	15
4.9 INPUT SIGNAL TIMINGS ...............................................................................................................	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..............................................................................................................	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 ..........................................................................................................................................	27
7. OUTLINE DRAWINGS.........................................................................................................................	28
7.1 FRONT VIEW....................................................................................................................................	28
7.2 REAR VIEW ......................................................................................................................................	29

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NL6448BC33-64

1.OUTLINE

1.1 STRUCTURE AND PRINCIPLE

Color LCD module NL6448BC33-64 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.

1.2APPLICATION

•For industrial use

1.3FEATURES

•High luminance

•Wide viewing angle

•High contrast

•6-bit digital RGB signals

•DE (Data enable) function

•Reversible-scan direction

•Edge light type (without inverter)

•Replaceable lamp for backlight

•Acquisition product for UL60950-1/CSA C22.2 No.60950-1-03 (File number: E170632)

• Compliance with the European RoHS directive (2002/95/EC)

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NL6448BC33-64

2. GENERAL SPECIFICATIONS

	Display area	211.2 (H) × 158.4 (V) mm
	Diagonal size of display	26cm (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 (H) × 0.33 (V) mm
	Pixel pitch	0.33 (H) × 0.33 (V) mm
	Module size	243.0 (W) × 185.1 (H) × 10.5 (D) mm (typ.)
	Weight	475g (typ.)
	Contrast ratio	600:1 (typ.)
	Viewing angle	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
	Designed viewing direction	• 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
		(Perpendicular)
	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+Toff (10%←→ 90%)
		25ms (typ.)
	Luminance	At IBL= 5.0mArms / lamp
		450cd/m2 (typ.)
		6-bit digital signals for data of RGB colors,
	Signal system	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
		Edge light type: 2 cold cathode fluorescent lamps
		Replaceable part
	Backlight	• Lamp holder set: Type No. 104LHS46
		Recommended inverter (Option)
		• Inverter: Type No.: 104PW201
	Power consumption	At IBL= 5.0mArms / lamp, Checkered flag pattern
		6.2W (typ., Power dissipation of the inverter is not included.)
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NL6448BC33-64

3. BLOCK DIAGRAM

Host	LCD module (Product)

	R0 to R5	100Ω
		100Ω
	G0 to G5
	B0 to B5	100Ω
	CLK	100Ω	Controller
	Hsync	100Ω
	Vsync	100Ω
			driver-	lines480
	DE	100Ω
		47kΩ	V
	DPS
		47kΩ	Power supply
			for gradation
	GND
	Note1
	Note2		DC/DC
	VCC
		Fuse	converter

H-driver

1,920 lines

LCD panel

H: 640 × 3 (R, G, B) V: 480

FG	LCD panel signal processing board		Backlight (Edge light type)
Note1
Note2
	Inverter	VBLH	Lamp
VDDB
		VBLH
	(Option)		Lamp
GNDB
		VBLC
Note2
		Note1

Metallic frame of lamp holder

Note1: Relations between GND (Signal ground), FG (Frame ground) and VBLC (Lamp low voltage terminal) in the LCD module are as follows.

GND - FG	Connected
GND - VBLC	Not connected
FG - VBLC	Not connected

Note2: GND, FG and GNDB must be connected to customer equipment’s ground, and it is recommended that these grounds are connected together in customer equipment.

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NL6448BC33-64

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 (H) × 158.4 (V)	Note1	mm
Weight	475 (typ.), 500 (max.)		g

Note1: See "7. OUTLINE DRAWINGS".

4.2 ABSOLUTE MAXIMUM RATINGS

	Parameter		Symbol		Rating	Unit	Remarks
Power supply	LCD panel signal processing board		VCC		-0.3 to +6.5	V
voltage
	Lamp voltage		VBLH	2,000		Vrms
							-
	Display signals		VD			V
Input voltage for		Note1
					-0.3 to VCC+0.3
signals	Function signal		VF			V
		Note2
	Storage temperature		Tst		-30 to +80	°C	-
Operating temperature		Front surface	TopF		-20 to +70	°C	Note3
		Rear surface	TopR		-20 to +70	°C	Note4
					≤ 95	%	Ta ≤ 40°C
	Relative humidity		RH		≤ 85	%	40 < Ta ≤ 50°C
	Note5				≤ 55	%	50 < Ta ≤ 60°C
					≤ 36	%	60 < Ta ≤ 70°C
	Absolute humidity		AH		≤ 70	g/m3	Ta > 70°C
	Note5				Note6

Note1: CLK, Hsync, Vsync, DE, DATA (R0 to R5, G0 to G5, B0 to B5)

Note2: 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: Water amount at Ta = 70°C and RH = 36%

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NL6448BC33-64

4.3ELECTRICAL CHARACTERISTICS

4.3.1LCD panel signal processing board

								(Ta= 25°C)
	Parameter		Symbol	min.	typ.	max.	Unit	Remarks
	Power supply voltage		VCC	3.0	3.3	3.6	V	at VCC = 3.3V
				4.75	5.0	5.25	V	at VCC = 5.0V
					300
				-		410	mA	at VCC = 3.3V
	Power supply current		ICC		Note1	Note2
				-	200	270	mA	at VCC = 5.0V
					Note1	Note2
	Logic input voltage for	High	VDH	0.7VCC	-	VCC	V
	display signals	Low	VDL	0	-	0.3VCC	V	CMOS level
	Input voltage for DPS signal	High	VFH	0.7VCC	-	VCC	V
		Low	VFL	0	-	0.3VCC	V

Note1: Checkered flag pattern [by EIAJ ED-2522]

Note2: Pattern for maximum current

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							NL6448BC33-64
4.3.2 Backlight lamp							(Ta= 25°C, Note1)
	Parameter	Symbol	min.	typ.	max.	Unit	Remarks
							at IBL=5.0mArms:
	Lamp current	IBL	2.0	5.0	5.5	mArms	450cd/m2
							Note3, Note4
	Lamp voltage	VBLH	-	520	-	Vrms	Note2, Note3
			850	-	-	Vrms	Ta = 25°C
							Note2, Note3,
	Lamp starting voltage	VS					Note5, Note8
			1,150	-	-	Vrms	Ta = -20°C
							Note2, Note3,
							Note5, Note8
	Lamp oscillation frequency	FO	50	-	72	kHz	Note6

Note1: This product consists of 2 backlight 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 (Power supply voltage peak ratio, power supply 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). When designing the inverter, evaluate asymmetric of lamp working waveform sufficiently.

Pa		|Pa - Pb|	× 100 ≤ 5%
Sa
0		Pb
	Sb	|Sa - Sb|
			× 100 ≤ 5%
Pb
		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 are contained in the 1 lamp holder, and both lamps are connected to 1 low voltage cable. Recommended lamp current is 5.0mArms typical for each lamp, and sum of 2 lamps is 10mArms typical. The lamp current should be measured by high-frequency current meter at the low voltage terminal.

Note5: The inverter should be designed so that the lamp starting voltage can be maintained for more than 1 second. Otherwise the lamp may not be turned on.

Note6: 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

FO = 14 × th1 × (2n-1)

th: Horizontal cycle (See "4.9.2 Timing characteristics".) n: Natural number (1, 2, 3 )

Note7: 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.

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