NEC NL 2432HC22-41K DATA SHEET

TFT COLOR LCD MODULE

NL2432HC22-41K

8.9cm (3.5 Type)
QVGA

DATA SHEET

DOD-PP-0307 (2nd edition)

This DATA SHEET is updated document from
DATA SHEET DOD-PP-0184(1).

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

Document Number: DOD-PP-0307 (2nd edition)
Published date: July 2007 CP(N)

1

© NEC LCD Technologies, Ltd.

2007 All rights reserved.

NL2432HC22-41K

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.

DATA SHEET DOD-PP-0307 (2nd edition)

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NL2432HC22-41K

CONTENTS

INTRODUCTION ..........................................................................................................................................

1. OUTLINE....................................................................................................................................................

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

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

1.3 FEATURES.............................................................................................................................................

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

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

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

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

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

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

4.4 SETTING OF THE INTERNAL RESISTER.......................................................................................

4.5 INTERFACE PIN CONNECTIONS ....................................................................................................

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

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

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

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

4.9.1 RGB interface (Ta= 25°C, VCC= 3.0V)......................................................................................

4.9.2 Serial interface (Ta= 25°C, VCC= 3.0V).....................................................................................

4.10 OPTICAL CHARACTERISTICS ......................................................................................................

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

6. PRECAUTIONS .......................................................................................................................................

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

6.2 CAUTIONS..........................................................................................................................................

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

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

6.3.2 Environment.................................................................................................................................

6.3.3 Characteristics..............................................................................................................................

6.3.4 Other............................................................................................................................................

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

8. RECOMMENDED DESIGN OF FRONT BEZEL................................................................................

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DATA SHEET DOD-PP-0307 (2nd edition)

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1. OUTLINE

1.1 STRUCTURE AND PRINCIPLE

Color LCD module NL2432HC22-41K 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, touch panel (T/P) 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 controller, 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

• PDAs

1.3 FEATURES

• Adoption of SR-NLT (Super-Reflective Natural Light TFT) (Transflective type)

• Backlight and touch panel attached

• High luminance

• High contrast

• Including LCD controller and power supply

• 6-bit digital RGB signals

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

NL2432HC22-41K

DATA SHEET DOD-PP-0307 (2nd edition)

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2. GENERAL SPECIFICAT IONS

Display area

NL2432HC22-41K

53.64 (W) × 71.52 (H) mm

Diagonal size of display
Drive system
Display color
Pixel
Pixel arrangement
Dot pitch
Pixel pitch
Module size
Weight
Touch panel surface

Touch panel
pencil-hardness

Luminance

Reflection ratio

Contrast ratio

Response time

Signal system

Supply voltage

8.9 cm (3.5 inches)
a-Si TFT active matrix
262,144 colors
240 (H) × 320 (V) pixels
RGB (Red dot, Green dot, Blue dot) vertical stripe

0.0745 (H) × 0.2235 (V) mm

0.2235 (H) × 0.2235 (V) mm

63.5 (H) × 85.0 (V) × 4.2 (D) mm (typ.)
43g (typ.)
Clear

3H (min.) [by JIS K5400]

At IL= 20mA, with Touch panel

200cd/m

2

(typ.)

With Touch panel

15% (typ.)

At transmissive mode, IL= 20mA, with Touch panel

150:1 (typ.)

At reflective mode, with Touch panel

15:1 (typ.)

←→

Ton+Toff (10%

90%)

30 ms (typ., at transmissive mode)

16 ms (typ., at reflective mode)
6-bit digital signals for data of RGB colors, Dot clock (CLK),
Horizontal synchronous signal (HSYNC),
Vertical synchronous signal (VSYNC)
Serial interface (SPI correspondence) (/CS, SCL, SI)

VCC: 3.0V (typ.)

Power consumption

LCD panel: 50 mW (typ.)
Backlight: 384mW (typ., at IL=20mA)

DATA SHEET DOD-PP-0307 (2nd edition)

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r

t

3. BLOCK DIAGRAM

COM circuit diagram

(Example of connection)

Power supply

Input

CPU

/RESET

/CS

SCL

SI

Touch panel

Backligh

NL2432HC22-41K

Product (LCD panel + Driver + Backlight + Touch panel (T/P))

Backlight

LCD panel

Touch panel
(T/P)

VCOMIN

D20 to D25
D10 to D15
D00 to D05
CLK
VSYNC
HSYNC

/RESET
/CS
SCL
SI

Anode

VCC

Drive

XL

YD

XR

YU

Cathode

DATA SHEET DOD-PP-0307 (2nd edition)

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NL2432HC22-41K

FPC I/F
Pin No.

13 to 18
19 to 24
25 to 30
10
9
11

8
35
32
33

36

3, 4, 5, 6

1, 2, 7, 12,
31, 38, 43

39, 40,
41, 42

44
45

Reference design of COM circuit

6220kΩ

100kΩ

56

68kΩ

D00 to D05
D10 to D15
D20 to D25
VSYNC
HSYNC
CLK

/RESET
/CS
SCL
SI

VCOMIN

VCC

GND

XL, YD
XR, YU

ANODE
CATHODE

5

3V

Symbol

720 lines

LCD panel

320 lines

H: 240 × 3 (R, G, B)
V: 320

Driver

Touch panel

+3.0V

Backlight

VCOMIN

DATA SHEET DOD-PP-0307 (2nd edition)

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4. DETAILED SPECIFICATIONS

4.1 MECHANICAL SPECIFICATIONS

Parameter Specification Unit

Module size

Display area 53.64 (H) × 71.52 (V) Note2 mm

Weight 43 (typ.), 45 (max.) g

Note1: Excluding FPC
Note2: See "7. OUTLINE DRAWINGS".

4.2 ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Rating Unit Remarks

63.5 ± 0.3 (W) × 85.0 ± 0.3 (H) × 4.2 ± 0.2 (D)
Note1

NL2432HC22-41K

Note2 mm

Supply voltage VCC -0.5 to +6.0 V
Logic input voltage VI -0.5 to VCC+0.5 V Logic signals

Reverse voltage VR
Power dissipation PD

Backlight

Storage temperature Tst -30 to +80 ­Operating temperature Top -20 to +70

Relative humidity

Absolute humidity

Storage altitude
Operating altitude

Forward current IL Note1 mA
Pulse forward current IFP 100 mA

Note3

Note3

RH

AH

≤ 30

≤ 738

≤ 95 Ta≤ 40°C
≤ 85 40°C <Ta≤ 50°C
≤ 70

≤ 73

Note4

≤ 13,600

≤ 4,850

V

mW

°C

%

g/m

m
m

3

Ta= 25°C

Ta= 25°C

Pulse width ≤ 10ms,

Duty ≤ 1/10

Product surface Note2

50°C <Ta≤ 55°C

Ta> 55°C

-30°C ≤ Ta ≤ 80°C

-20°C ≤ Ta ≤ 70°C

Note1: Allowable forward current

40
35
30
25
20
15
10

5
0

Allowable forward current [mA]

0 20 40 60 80 100

Ambient temperature Ta [

°C

]

℃

35mA (27°C)

8.5m

Note2: Measured at display area
Note3: No condensation
Note4: Water amount at Ta= 55°C and RH= 70%

DATA SHEET DOD-PP-0307 (2nd edition)

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NL2432HC22-41K

4.3 ELECTRICAL CHARACTERISTICS

(1) Logic/ LCD driving

(Ta= 25°C)

Parameter Symbol min. typ. max. Unit Remarks
Logic supply voltage VCC 2.85 3.0 3.15 V -
Logic input high voltage VIH 0.8VCC - VCC V
Logic input low voltage VIL 0 - 0.2VCC V
COM/H voltage COM/H - 1.8 - V at VCC= 3.0V Note1

ICC - 16.5 26

VCC supply current

ICCs - 0.2 -

Note1: The optimum value for COM/H is in the range of 1.3 V to 2.3 V.

Recommended adjustment display for COM/H

Half tone display (32/63 gray scale)
Full black display (0/63 gray scale)
Half tone display (32/63 gray scale)
Full black display (0/63 gray scale)
Half tone display (32/63 gray scale)

Note2: PPCLK= 5.0MHz, PPHSYNC= 19.53kHz, PPVSYNC= 60Hz,
Checkered flag pattern (by EIAJ ED-2522)

(2) Backlight

Parameter Symbol min. typ. max. Unit Remarks

Logic signal

Normal mode
at VCC= 3.0V Note2

mA

Stand-by mode
at VCC= 3.0V Note2

(Ta= 25°C)

Forward Current IL - 20 22 mA -
Forward Voltage VL - 19.2 21.0 V at IL= 20mA

DATA SHEET DOD-PP-0307 (2nd edition)

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