NEC NL10276BC24-05 Specification

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31cm (12.1 type), 1024 × 768 pixels, Full color

Vertical screen expansion (Multi-scan), Incorporated backlight with inverter

DESCRIPTION

NL10276AC24-05 is a TFT (thin film transistor) active matrix color liquid crystal display (LCD) comprising

amorphous silicon TFT attached to each signal electrode, a driving circuit and a backlight. NL10276AC24-05 has

a built-in backlight/inverter.

The 31cm diagonal display area contains 1024×768 pixels and can display full-color (more than 16 million

colors) simultaneously by analog RGB signals of XGA, SVGA, VGA, VGA-TEXT, PC-9801, NTSC, and PAL.

NL10276AC24-05 is a succeeding model for NL10276AC24-02, and it has two additional operating modes of

NTSC and PAL.

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DATA SHEET

NL10276AC24-05

TFT COLOR LCD MODULE

FEATURES

™ Analog RGB interface

™ Vertical screen expansion (Multi-scan)~XGA, SVGA, VGA, VGA-TEXT, PC-9801, NTSC, PAL.

™ High luminous / Low reflection

™ Incorporated edge-light type backlight with inverter.

APPLICATIONS

™ Engineering workstation (EWS), Personal computer (PC), Word processor

™ Display terminals for control system

™ New media

™ Monitors for process controller

The information in this document is subject to change without notice.

Document No. EN0208EJ2V0DS00 Date Published April 1997 M Printed in Japan

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1996

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NL10276AC24-05

STRUCTURE AND FUNCTIONS

A TFT color LCD module comprises a TFT LCD panel, LSIs for driving liquid crystal, and a backlight. The TFT

LCD panel is composed of a TFT array glass substrate superimposed on a color filter glass substrate with liquid

crystal filled in the narrow gap between two substrates. The backlight apparatus is located on the backside of the

LCD panel.

RGB (Red, Green, Blue) data signals are sent to LCD panel drivers after modulation into suitable forms for

active matrix addressing through signal processor.

Each of the liquid crystal cells acts as an electro-optical switch that controls the light transmission from the

backlight by a signal applied to a signal electrode through the TFT switch.

BLOCK DIAGRAM

R G B

Vsync Hsync CLK

DE DESEL CLAMP CPSEL FIELD

CNTDAT CNTCLK CNTSTB CNTSEL

V V

GND POWC

I/F

LCD module

AIF

OFF

AMP

LCD timing controller

DC / DC converter

V-driver

768 lines

Analog

H-driver

1536 lines

TFT-LCD panel

H:1024×3 (R, G, B) V:768

1536 lines

Analog

H-driver

DDB

∗

GNDB BRTC BRTH BRTL ACA

∗

1 : GNDB is connected to the module frame ground.

Inverter

Backlight

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OUTLINE OF CHARACTERISTICS (at room temperature)

Display area 245.76 (H) × 184.32 (V)mm Drive system a-Si TFT active matrix

Display colors Full-color Number of pixels 1024× 768

Pixel arrangement RGB vertical stripe Pixel pitch 0.24 (H)× 0.24 (V)mm Module size 290 (H)× 225.0 (V) × 17.0 max. (D)mm

Weight 970 g (typ.)

Contrast ratio 150:1 (typ.)

Viewing angle (more than the contrast ratio of 10:1)

• Horizontal: 50˚ (typ. left side, right side)

• Vertical : 20˚ (typ. upper side), 20˚ (typ. lower side)

Designed viewing direction

• Wider viewing angle with contrast ratio : Down side (6 o'clock)

• Wider viewing angle without image reversal : Up side (12 o'clock)

• Optimum grayscale (γ = 2.2) : Perpendicular Color gamut 40% (min., At center, To NTSC)

Response time 40 ms (max.), "white" to "black"

Luminance 200 cd/m

Signal system Analog RGB signals, Synchronous signals (Hsync, Vsync), Dot clock

Supply voltage 3.3 V, 12 V, 12 V

Backlight Edge light type, Two cold cathode fluorescent lamps with inverter

Power consumption 14.4 W (typ.)

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(typ.)

NL10276AC24-05

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GENERAL SPECIFICATIONS

Item Specifications Unit

Module size 290.0 ±0.5(H) × 225.0 ± 0.5(V) × 17.0 max. (D) mm

Display area 245.76(H) × 184.32 (V) mm

Number of pixels 1024(H) × 768 (V) pixel

Dot pitch 0.08(H) × 0.24 (V) mm

Pixel pitch 0.24(H) × 0.24 (V) mm

Pixel arrangement RGB(Red, Green, Blue) vertical stripe –

Display colors Full-color color

Weight 1000 (max.) g

note : A variable resistor for the luminance control is extra.

ABSOLUTE MAXIMUM RATINGS

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NL10276AC24-05

Parameter Symbol Ratings Unit Remarks

VCC –0.3 to +4.6 V

Supply voltage VDD –0.3 to +14 V

VDDB –0.3 to +14 V

Logic input voltage VIN1 –0.3 to +5.5 V

R, G, B input voltage VIN2 –4.0 to +4.0 V

CLK input voltage VIN3 –7.0 to +7.0 V

Storage temp. Tst –20 to +60 ˚ C –

Operating temp. Top 0 to +50 ˚ C Module surface *

Humidity 95% relative humidity Ta = 40˚C

* Measured at the display area

< =

85% relative humidity

Absolute humidity shall not exceed Ta > 50˚C Ta = 50˚C, 85% relative humidity level.

Ta = 25˚C

< =

40˚C<Ta 50˚C

no condensation

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ELECTRICAL CHARACTERISTICS

(1) Logic/ LCD driving / Backlight Ta = 25˚C

Parameter Symbol min. typ. max. Unit Remarks

Supply voltage VDD 11.4 12.0 12.6 V for LCD driving

Logic input "L" voltage VIL 0 – 0.8 V

Logic input "H" voltage VIH 2.2 – 5.25 V

Logic input "L" current 1 IIL1 –1080 – –

Logic input "H" current 1 IIH1 ––10μA

Logic input "L" current 2 IIL2 –670 – –

Logic input "H" current 2 IIH2 ––80μA

Logic input "L" current 3 IIL3 –90 – –

Logic input "H" current 3 IIH3 ––0μA

Logic input "L" current 4 IIL4 –10 – –

Logic input "H" current 4 IIH4 – – 130

CLK input voltage VICLK 0.4 – 1.0 Vp-p

CLK DC input level VIdc-CLK –4.5 – +4.5 V

Supply current IDDB – 710 800 mA VDDB = 12 V

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NL10276AC24-05

VCC 3.0 3.3 3.6 V for logic

VDDB 11.4 12.0 12.6 V for backlight

TTL level Vcc=3.3 V

for CNTSEL, CPSEL and POWC terminals

for BRTC terminal

for ACA terminal

except the above

∗

IDD – 480 700 mA VDD = 12 V

ICC – 120 200 mA VCC = 3.3 V

logic input terminals

for CLK

∗2

∗1 : Ta = 0 to 50˚C : V

Ta = 25˚C : VICLK = 0.4 Vp-p (MIN.).

∗2 : dot-checkered pattern

ICLK = 0.6 Vp-p (MIN.).

CLK input equivalent circuit

1 000 pF

CLK

510 Ω

(2) Input video signals (R, G, B) Ta = 25˚C

Parameter Symbol min. typ. max. Unit Remarks

Video input voltages VIRGB

Video input limits V

Idc-RGB –2.5 – +2.5 V

(black) (White)

–

0.7 Vp-p

for RGB Zi = 75 Ω

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SUPPLY VOLTAGE SEQUENCE

Voltage

0< 0<

(Synchronous signals, Control signals)

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DDB

POWC

VCC

Logic signals

NL10276AC24-05

Time

0<0<

CAUTION

Wrong power sequence may damage to the module.

(1) Logic signals (synchronous signals and control signals) should be "0" voltage (V), when V

higher than 0.3 V is input to signal lines, the internal circuit will be damaged.

(2) LCD module will shut down the power supply of driving voltage to LCD panel internally, when one of CLK,

Hsync, Vsync, DE (at DE mode) is not input more than 90 ms typically. During this period, the display data are

unstable. But the backlight works correctly even this period, and the backlight can be controlled by BRTC

signal.

(3) The ON/OFF switching of backlight should operate while logic signals are supplied.

If the backlight power supply (V

(4) Keep POWC signal "L" more than 200 ms after the power supply (V

DDB) is turned ON / OFF without logic signals, unstable data will be displayed.

CC) is input, if POWC signal is controlled.

(refer to PIN FUNCTION)

(5) Analog RGB inputs are independent from this power supply sequence.

(6) It is better for the timing between logic signals and V

CC as follows.

CC is not input. If

VCC

Logic signals

0<t<30 ms 0<t<30 ms

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INTERFACE PIN CONNECTION

(1) Connector 1

CN1 : MRF03-6R-SMT (coaxial type)

Adaptable socket : MRF03-2×6P-1.27 (For cable type) or

MRF03-6PR-SMT (For board to board type)

Supplier : HIROSE ELECTRIC CO., LTD.

Coaxial cable : UL20537PF75VLAS

Supplier : HITACHI CO., LTD.

note : A coaxial cable shield should be connected with GND.

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NL10276AC24-05

Pin No. Symbol Pin No. Symbol

1 CLK 4 R

2 Hsync 5 G

3 Vsync 6 B

(2) Connector 2

CN2 : IL-Z-12PL1-SMTY

Adaptable socket : IL-Z-12S-S125C3

Supplier : Japan Aviation Electronics Industry Limited (JAE)

Pin No. Symbol Pin No. Symbol

1VDD 7VCC

2VDD 8VCC

3 GND 9 DESEL

4 GND 10 GND

5 POWC 11 GND

6 GND 12 DE

(3) Connector 3

CN3 : IL-Z-11PL1-SMTY

Adaptable socket : IL-Z-11S-S125C3

Supplier : Japan Aviation Electronics Industry Limited (JAE)

654321

12 11 • • • 2 1

Pin No. Symbol Pin No. Symbol

1VDDB 7 ACA

2VDDB 8BRTC

3VDDB 9BRTH

4 GNDB 10 BRTL

5 GNDB 11 N.C.

6 GNDB

note : N.C. (No Connection) should be open.

11 10 2 1

• • •

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(4) Connector 4

CN4 : IL-Z-13PL1-SMTY

Adaptable socket : IL-Z-13S-S125C3

Supplier : Japan Aviation Electronics Industry Limited (JAE)

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NL10276AC24-05

Pin No. Symbol Pin No. Symbol

1 GND 8 CLAMP

2 CNTSEL 9 GND

3 CNTDAT 10 FIELD

4 CNTSTB 11 GND

5 GND 12 N.C.

6 CNTCLK 13 GND

7 CPSEL

note : N.C. (No Connection) should be open.

13 12 2 1

CN1

• • •

CN3

Connector insert direction

CN2

CN4

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PIN FUNCTION

Symbol Logic Description

CLK Positive Dot clock input, timing signal for display data

Hsync Negative Horizontal synchronous signal input (TTL level)

Vsync Negative Vertical synchronous signal input (TTL level)

DE Positive Data enable signal input (TTL level)

R – Red video signal input (0.7 Vp-p, 75 Ω)

G – Green video signal input (0.7 Vp-p, 75 Ω)

B – Blue video signal input (0.7 Vp-p, 75 Ω)

CLAMP – Clamp timing signal of black level (TTL level)

CNTSEL – Display control signal in case of serial communication. (TTL level)

CNTDAT Positive Display control data (serial data) (TTL level)

CNTCLK Positive CLK for display control data (TTL level)

CNTSTB Positive Latch pulse for display control data (TTL level)

DESEL Positive DE function select signal (TTL level)

CPSEL – Clamp signal function select signal (TTL level)

FIELD – Field select signal (valid for only NTSC/PAL-mode)

POWC Positive Power control signal (TTL level)

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NL10276AC24-05

Back-porch becomes free, when DESEL is "H". Back-porch becomes fix, when DESEL is "L".

(DE should be fixed "H" or "L".)

Valid for only CPSEL is "L".

H or open : Default L : External control

H : DE mode L or open : Fixed mode

H or open : Default L : CLAMP signal is possible

(TTL level)

1st field is "H". 2nd field is "L".

Field terminal is possible to use "OPEN" in case of except NTSC/ PAL-mode.

H or open : Logic, LCD power is on L : Logic, LCD power is off

(*1)

BRTH/BRTL – Pins for backlight brightness control

Connect 10 kW variable resistor (*2) or voltage control (*3).

BRTC Positive Backlight ON/OFF control signal

H or open : Backlight on L : Backlight off

ACA Positive Luminance control signal

H or open : Normal luminance L : Low luminance (1/2 of normal luminance)

VCC –VCC (+3.3 V) power supply for logic

VDD –VDD (+12 V ± 5%) power supply for LCD

VDDB –VDDB (+12 V ± 5%) power supply for backlight

GNDB Ground for backlight (V

GNDB is connected to the module frame ground.

GND – Signal ground for logic / LCD driving (VCC, VDD)

(Connect to a system ground.)

DDB)

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*1 : When POWC is "L" logic input signal should be all "0 V". If input signals are more than "0.3 V", inside

circuits of the LCD module may be broken.

When POWC is "L", serial communication data is clear. Please set it again.

*2 : The variable resistor for brightness control should be 10 kΩ type, and zero point of the resistor corre-

sponds to the minimum of luminance.

BRTH BRTL (10 k Ω±5% , B curve)

< connection of the variable resistor to pins >

*3 : In case of voltage control for brightness by BRTH/BRTL, at first, set BRTH to be "0 V". And BRTL input

voltage can control the brightness. When BRTL input voltage is "1 V" the luminance become maximum.

And when its voltage is "0 V", the luminance becomes minimum.

FUNCTIONS

(1) Serial data

This LCD module has following functions by serial data input (Table 1).

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NL10276AC24-05

No. FUNCTIONS DETAIL

1 Expansion mode See Table 2

(Screen mode) and EXPANSION FUNCTION

2 Display position control (HORIZONTAL) See Table 6

3 Display position control (VERTICAL) See Table 3

4 CLK delay control See Table 4

5 Hsync period count number See Table 7

6 CLK fall/rise synchronous change See Table 5

7 Input frequency selection See Table 8

HOW TO USE THE ABOVE FUNCTIONS

If CNTSEL is "L", the above functions are valid. (CNTSEL is "H" or open, default values are valid.) After serial

data are transferred, the data is latched by CNTSTB. Once, the data is latched, the above functions are

effective.

Please keep CNTSTB to be "L" during transferring data.

Input data can be changed during power on, but LCD display may be disturbed. When the serial data are

changed, we recommend that the backlight power is off using BRTC function.

ATTENTION

Input data can be changed during power on, but LCD display may be disturbed. When the serial data are

changed, we recommend that the backlight power is off using BRTC function.

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